Extracting prog: 17m58.543181332s Minimizing prog: 1h55m45.81894104s Simplifying prog options: 17m8.816676487s Extracting C: 5m14.784864199s Simplifying C: 0s extracting reproducer from 32 programs testing a last program of every proc single: executing 7 programs separately with timeout 6m0s testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_genetlink_get_family_id$auto_ethtool-sendmsg$auto_ETHTOOL_MSG_FEATURES_SET-ioctl$auto_SNDCTL_DSP_SYNC-openat$auto_kernfs_file_fops_kernfs_internal-read$auto-openat$auto_cpu_latency_qos_fops_qos-syz_genetlink_get_family_id$auto_nl802154-ioctl$NS_GET_PARENT-gettid-rt_tgsigqueueinfo$auto-mmap$auto-sendmsg$auto_NL80211_CMD_GET_REG-close_range$auto-socket-socket-syz_genetlink_get_family_id$auto_ethtool-sendmsg$auto_ETHTOOL_MSG_LINKMODES_SET-sendmmsg$auto-sendmsg$auto_NL80211_CMD_GET_REG detailed listing: executing program 0: r0 = syz_genetlink_get_family_id$auto_ethtool(&(0x7f0000000040), 0xffffffffffffffff) sendmsg$auto_ETHTOOL_MSG_FEATURES_SET(0xffffffffffffffff, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000540)=ANY=[@ANYRES16=r0, @ANYRES16=r0, @ANYRESDEC=r0], 0x44}}, 0x24048084) ioctl$auto_SNDCTL_DSP_SYNC(0xffffffffffffffff, 0x5001, 0xfffffffffffffffc) r1 = openat$auto_kernfs_file_fops_kernfs_internal(0xffffffffffffff9c, &(0x7f0000000300)='/sys/devices/platform/dummy_udc.4/udc/dummy_udc.4/function\x00', 0x0, 0x0) read$auto(r1, 0x0, 0x7) openat$auto_cpu_latency_qos_fops_qos(0xffffffffffffff9c, &(0x7f0000000080), 0x10000, 0x0) syz_genetlink_get_family_id$auto_nl802154(&(0x7f0000000040), 0xffffffffffffffff) ioctl$NS_GET_PARENT(0xffffffffffffffff, 0xb702, 0x0) r2 = gettid() rt_tgsigqueueinfo$auto(0x0, r2, 0x1e, &(0x7f0000000400)={@siginfo_0_0={0x77, 0x7fff, 0x7, @_sigfault={&(0x7f0000000480)="63ab5d1627efd9ab5457097eeeef551eb169c136518782103a0cc8016c912a75ffde11243decb7b083ef5c953baf5c7f635a96163996ec5250d38d0f0be5e3228d6bce7b76aeaa2506b1c62bdd96a2a5fb5a5c8b68809ecc5076b5a37a43a8566b7f088b816ebab73933f8f9c5198c5acd0bab8e2c698e6b90b399f1cca980ed41f4c16dcffe6aa1e659b055dd47ad127392a652176712ccd6b7a2d5fcb44918942983f6d08e03d6925945ff4a72e6a99bd7eb", @_addr_pkey={"53f8b65a83a57aa6", 0x80000000}}}}) mmap$auto(0x0, 0x2020009, 0x3, 0xeb1, 0xfffffffffffffffa, 0x8000) sendmsg$auto_NL80211_CMD_GET_REG(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000200)={0x0, 0x1ac}, 0x1, 0x0, 0x0, 0x4004810}, 0x800) close_range$auto(0x2, 0x8, 0x0) r3 = socket(0x10, 0x2, 0x4) socket(0x10, 0x3, 0x6) r4 = syz_genetlink_get_family_id$auto_ethtool(&(0x7f0000000040), 0xffffffffffffffff) sendmsg$auto_ETHTOOL_MSG_LINKMODES_SET(r3, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000380)=ANY=[@ANYBLOB="f0020000", @ANYRES16=r4, @ANYBLOB="01002dbd7000fedbdf2505000000da0203800800c000e000000204002a000400110008002e00", @ANYRES32, @ANYBLOB="d152e64e22695352dd73864415aa8a78c65e6ab752fb4d469a47a092ae7d5061cdd9690cac4138553ecfbb1b32"], 0x2f0}, 0x1, 0x0, 0x0, 0x40000}, 0x50) sendmmsg$auto(0x3, &(0x7f0000000080)={{0x0, 0x2, &(0x7f00000002c0)={0x0, 0xc4}, 0x1, 0x0, 0x0, 0x9}, 0x7}, 0x3, 0x0) sendmsg$auto_NL80211_CMD_GET_REG(0xffffffffffffffff, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000000)=ANY=[@ANYBLOB="72010000", @ANYBLOB="1c003b"], 0x1ac}, 0x1, 0x0, 0x0, 0x800}, 0x40000) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-prctl$auto-mmap$auto-read$auto_fake_panic_fops_-close_range$auto-socket-socket-bind$auto-openat$auto_console_fops_tty_io-openat$auto_tomoyo_operations_securityfs_if-openat$auto_tty_fops_tty_io-ioctl$auto-sendmmsg$auto-sendmsg$auto_NFSD_CMD_THREADS_SET-ioctl$auto_FS_IOC_ZERO_RANGE-sendmsg$auto_NL80211_CMD_GET_REG-sendmmsg$auto-syz_genetlink_get_family_id$auto_tipcv2-msgctl$auto-socketpair$auto-setsockopt$auto-sendmmsg$auto-mmap$auto-setsockopt$auto-write$auto detailed listing: executing program 0: mmap$auto(0x0, 0x6, 0xdb, 0x9b72, 0xffffffffffffffff, 0x8000) prctl$auto(0x1000000003b, 0x1, 0x4, 0x5, 0x7) mmap$auto(0x0, 0x400008, 0xdf, 0x9b72, 0x2, 0x8000) read$auto_fake_panic_fops_(0xffffffffffffffff, 0x0, 0x0) close_range$auto(0x2, 0x8, 0x0) r0 = socket(0x2, 0x3, 0x6) r1 = socket(0x2, 0x1, 0x0) bind$auto(0x3, &(0x7f0000000040)=@in={0x2, 0xffff, @remote}, 0x6a) r2 = openat$auto_console_fops_tty_io(0xffffffffffffff9c, &(0x7f0000000800)='/dev/tty0\x00', 0x102, 0x0) openat$auto_tomoyo_operations_securityfs_if(0xffffffffffffff9c, &(0x7f0000000180)='/sys/kernel/security/tomoyo/version\x00', 0x20000, 0x0) r3 = openat$auto_tty_fops_tty_io(0xffffffffffffff9c, &(0x7f0000000000)='/dev/tty12\x00', 0x800, 0x0) ioctl$auto(r3, 0x4b41, 0x7) sendmmsg$auto(r1, &(0x7f0000000140)={{&(0x7f0000000040), 0x12, 0x0, 0x9, 0x0, 0x1f, 0xb}, 0x800009}, 0x5, 0x20000000) sendmsg$auto_NFSD_CMD_THREADS_SET(0xffffffffffffffff, &(0x7f0000000100)={0x0, 0x0, &(0x7f0000000080)={0x0, 0x24}, 0x1, 0x0, 0x0, 0x20000010}, 0xc0) ioctl$auto_FS_IOC_ZERO_RANGE(r2, 0x40305839, 0x3) sendmsg$auto_NL80211_CMD_GET_REG(0xffffffffffffffff, 0x0, 0x51) sendmmsg$auto(0x3, &(0x7f0000000080)={{0x0, 0x1c03, &(0x7f00000002c0)={0x0, 0xc4}, 0x1, 0x0, 0x0, 0x9}, 0x7}, 0x3, 0x0) syz_genetlink_get_family_id$auto_tipcv2(&(0x7f0000000200), r0) msgctl$auto(0x1, 0x9, &(0x7f0000000300)={{0x0, 0xffffffffffffffff, 0xee00, 0x6, 0x0, 0x8, 0x3}, &(0x7f0000000240)=0x8, &(0x7f0000000280)=0xa, 0x7, 0x0, 0x3, 0x1d4, 0x401, 0x8000, 0x6, 0x4, @inferred=0xffffffffffffffff}) socketpair$auto(0x1e, 0x3, 0xfffffffe, 0x0) setsockopt$auto(0x3, 0x1, 0x3e, 0x0, 0x9) sendmmsg$auto(0x3, &(0x7f0000000080)={{0x0, 0x2, 0x0, 0x1, 0x0, 0x0, 0x3}, 0x7}, 0x3, 0xcad7) mmap$auto(0x0, 0x400007, 0xdf, 0x9b7f, 0x2, 0x8000) setsockopt$auto(0x3, 0x1, 0x3e, 0x0, 0x9) write$auto(0x3, 0x0, 0x100085) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-socket-openat$auto_fb_fops_fb_chrdev-openat$auto_tty_fops_tty_io-socketpair$auto-ioctl$auto-mmap$auto-openat$auto_kernfs_file_fops_kernfs_internal-read$auto-openat$auto_nsim_dev_health_break_fops_health-write$auto-openat$auto_loop_ctl_fops_loop-unlink$auto-ioctl$auto_LOOP_CTL_ADD-setfsuid$auto-keyctl$auto-msgctl$auto_IPC_STAT-setresuid$auto-ioctl$sock_SIOCGIFINDEX detailed listing: executing program 0: mmap$auto(0x0, 0x40000040000a, 0xdf, 0x9b72, 0x2, 0x8000) socket(0x2, 0x1, 0x0) r0 = openat$auto_fb_fops_fb_chrdev(0xffffffffffffff9c, &(0x7f0000000000)='/dev/fb0\x00', 0x20401, 0x0) r1 = openat$auto_tty_fops_tty_io(0xffffffffffffff9c, &(0x7f0000000000)='/dev/tty12\x00', 0x800, 0x0) r2 = socketpair$auto(0x1e, 0x4, 0x8000000000000000, 0x0) ioctl$auto(r1, 0x541c, r2) mmap$auto(0x0, 0x20009, 0x7fffffff, 0xeb1, 0x401, 0x8000) r3 = openat$auto_kernfs_file_fops_kernfs_internal(0xffffffffffffff9c, &(0x7f0000000080)='/sys/devices/virtual/net/lapb4/carrier\x00', 0x0, 0x0) read$auto(r3, 0x0, 0x20) r4 = openat$auto_nsim_dev_health_break_fops_health(0xffffffffffffff9c, &(0x7f0000000000)='/sys/kernel/debug/netdevsim/netdevsim2/health/break_health\x00', 0x48081, 0x0) write$auto(r4, 0x0, 0x2) r5 = openat$auto_loop_ctl_fops_loop(0xffffffffffffff9c, 0x0, 0x40, 0x0) unlink$auto(0x0) ioctl$auto_LOOP_CTL_ADD(r5, 0x4c80, 0xfffffffffffffffd) r6 = setfsuid$auto(0xee01) keyctl$auto(0x1d, 0xffffffffffffffff, r6, 0x0, 0x6) msgctl$auto_IPC_STAT(0xfffff73c, 0x2, &(0x7f0000000100)={{0xd09b, 0xee01, 0xee00, 0xb, 0x3, 0x2, 0x10}, &(0x7f0000000040)=0x4, &(0x7f00000000c0)=0x3, 0x2, 0xb, 0x2, 0x9, 0x4, 0xf, 0x57, 0x7, @inferred, @inferred=0xffffffffffffffff}) setresuid$auto(r6, r7, r6) ioctl$sock_SIOCGIFINDEX(r0, 0x4604, 0x0) program crashed: INFO: task hung in remove_one single: successfully extracted reproducer found reproducer with 19 syscalls minimizing guilty program testing program (duration=7m12.914264415s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-socket-openat$auto_fb_fops_fb_chrdev-openat$auto_tty_fops_tty_io-socketpair$auto-ioctl$auto-mmap$auto-openat$auto_kernfs_file_fops_kernfs_internal-read$auto-openat$auto_nsim_dev_health_break_fops_health-write$auto-openat$auto_loop_ctl_fops_loop-unlink$auto-ioctl$auto_LOOP_CTL_ADD-setfsuid$auto-keyctl$auto-msgctl$auto_IPC_STAT-setresuid$auto detailed listing: executing program 0: mmap$auto(0x0, 0x40000040000a, 0xdf, 0x9b72, 0x2, 0x8000) socket(0x2, 0x1, 0x0) openat$auto_fb_fops_fb_chrdev(0xffffffffffffff9c, &(0x7f0000000000)='/dev/fb0\x00', 0x20401, 0x0) r0 = openat$auto_tty_fops_tty_io(0xffffffffffffff9c, &(0x7f0000000000)='/dev/tty12\x00', 0x800, 0x0) r1 = socketpair$auto(0x1e, 0x4, 0x8000000000000000, 0x0) ioctl$auto(r0, 0x541c, r1) mmap$auto(0x0, 0x20009, 0x7fffffff, 0xeb1, 0x401, 0x8000) r2 = openat$auto_kernfs_file_fops_kernfs_internal(0xffffffffffffff9c, &(0x7f0000000080)='/sys/devices/virtual/net/lapb4/carrier\x00', 0x0, 0x0) read$auto(r2, 0x0, 0x20) r3 = openat$auto_nsim_dev_health_break_fops_health(0xffffffffffffff9c, &(0x7f0000000000)='/sys/kernel/debug/netdevsim/netdevsim2/health/break_health\x00', 0x48081, 0x0) write$auto(r3, 0x0, 0x2) r4 = openat$auto_loop_ctl_fops_loop(0xffffffffffffff9c, 0x0, 0x40, 0x0) unlink$auto(0x0) ioctl$auto_LOOP_CTL_ADD(r4, 0x4c80, 0xfffffffffffffffd) r5 = setfsuid$auto(0xee01) keyctl$auto(0x1d, 0xffffffffffffffff, r5, 0x0, 0x6) msgctl$auto_IPC_STAT(0xfffff73c, 0x2, &(0x7f0000000100)={{0xd09b, 0xee01, 0xee00, 0xb, 0x3, 0x2, 0x10}, &(0x7f0000000040)=0x4, &(0x7f00000000c0)=0x3, 0x2, 0xb, 0x2, 0x9, 0x4, 0xf, 0x57, 0x7, @inferred, @inferred=0xffffffffffffffff}) setresuid$auto(r5, r6, r5) program crashed: INFO: task hung in remove_one testing program (duration=7m12.914264415s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-socket-openat$auto_fb_fops_fb_chrdev-openat$auto_tty_fops_tty_io-socketpair$auto-ioctl$auto-mmap$auto-openat$auto_kernfs_file_fops_kernfs_internal-read$auto-openat$auto_nsim_dev_health_break_fops_health-write$auto-openat$auto_loop_ctl_fops_loop-unlink$auto-ioctl$auto_LOOP_CTL_ADD-setfsuid$auto-keyctl$auto-msgctl$auto_IPC_STAT detailed listing: executing program 0: mmap$auto(0x0, 0x40000040000a, 0xdf, 0x9b72, 0x2, 0x8000) socket(0x2, 0x1, 0x0) openat$auto_fb_fops_fb_chrdev(0xffffffffffffff9c, &(0x7f0000000000)='/dev/fb0\x00', 0x20401, 0x0) r0 = openat$auto_tty_fops_tty_io(0xffffffffffffff9c, &(0x7f0000000000)='/dev/tty12\x00', 0x800, 0x0) r1 = socketpair$auto(0x1e, 0x4, 0x8000000000000000, 0x0) ioctl$auto(r0, 0x541c, r1) mmap$auto(0x0, 0x20009, 0x7fffffff, 0xeb1, 0x401, 0x8000) r2 = openat$auto_kernfs_file_fops_kernfs_internal(0xffffffffffffff9c, &(0x7f0000000080)='/sys/devices/virtual/net/lapb4/carrier\x00', 0x0, 0x0) read$auto(r2, 0x0, 0x20) r3 = openat$auto_nsim_dev_health_break_fops_health(0xffffffffffffff9c, &(0x7f0000000000)='/sys/kernel/debug/netdevsim/netdevsim2/health/break_health\x00', 0x48081, 0x0) write$auto(r3, 0x0, 0x2) r4 = openat$auto_loop_ctl_fops_loop(0xffffffffffffff9c, 0x0, 0x40, 0x0) unlink$auto(0x0) ioctl$auto_LOOP_CTL_ADD(r4, 0x4c80, 0xfffffffffffffffd) r5 = setfsuid$auto(0xee01) keyctl$auto(0x1d, 0xffffffffffffffff, r5, 0x0, 0x6) msgctl$auto_IPC_STAT(0xfffff73c, 0x2, &(0x7f0000000100)={{0xd09b, 0xee01, 0xee00, 0xb, 0x3, 0x2, 0x10}, &(0x7f0000000040)=0x4, &(0x7f00000000c0)=0x3, 0x2, 0xb, 0x2, 0x9, 0x4, 0xf, 0x57, 0x7, @inferred, @inferred=0xffffffffffffffff}) program crashed: INFO: task hung in remove_one testing program (duration=7m12.914264415s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-socket-openat$auto_fb_fops_fb_chrdev-openat$auto_tty_fops_tty_io-socketpair$auto-ioctl$auto-mmap$auto-openat$auto_kernfs_file_fops_kernfs_internal-read$auto-openat$auto_nsim_dev_health_break_fops_health-write$auto-openat$auto_loop_ctl_fops_loop-unlink$auto-ioctl$auto_LOOP_CTL_ADD-setfsuid$auto-keyctl$auto detailed listing: executing program 0: mmap$auto(0x0, 0x40000040000a, 0xdf, 0x9b72, 0x2, 0x8000) socket(0x2, 0x1, 0x0) openat$auto_fb_fops_fb_chrdev(0xffffffffffffff9c, &(0x7f0000000000)='/dev/fb0\x00', 0x20401, 0x0) r0 = openat$auto_tty_fops_tty_io(0xffffffffffffff9c, &(0x7f0000000000)='/dev/tty12\x00', 0x800, 0x0) r1 = socketpair$auto(0x1e, 0x4, 0x8000000000000000, 0x0) ioctl$auto(r0, 0x541c, r1) mmap$auto(0x0, 0x20009, 0x7fffffff, 0xeb1, 0x401, 0x8000) r2 = openat$auto_kernfs_file_fops_kernfs_internal(0xffffffffffffff9c, &(0x7f0000000080)='/sys/devices/virtual/net/lapb4/carrier\x00', 0x0, 0x0) read$auto(r2, 0x0, 0x20) r3 = openat$auto_nsim_dev_health_break_fops_health(0xffffffffffffff9c, &(0x7f0000000000)='/sys/kernel/debug/netdevsim/netdevsim2/health/break_health\x00', 0x48081, 0x0) write$auto(r3, 0x0, 0x2) r4 = openat$auto_loop_ctl_fops_loop(0xffffffffffffff9c, 0x0, 0x40, 0x0) unlink$auto(0x0) ioctl$auto_LOOP_CTL_ADD(r4, 0x4c80, 0xfffffffffffffffd) r5 = setfsuid$auto(0xee01) keyctl$auto(0x1d, 0xffffffffffffffff, r5, 0x0, 0x6) program crashed: INFO: task hung in remove_one testing program (duration=7m12.914264415s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-socket-openat$auto_fb_fops_fb_chrdev-openat$auto_tty_fops_tty_io-socketpair$auto-ioctl$auto-mmap$auto-openat$auto_kernfs_file_fops_kernfs_internal-read$auto-openat$auto_nsim_dev_health_break_fops_health-write$auto-openat$auto_loop_ctl_fops_loop-unlink$auto-ioctl$auto_LOOP_CTL_ADD-setfsuid$auto detailed listing: executing program 0: mmap$auto(0x0, 0x40000040000a, 0xdf, 0x9b72, 0x2, 0x8000) socket(0x2, 0x1, 0x0) openat$auto_fb_fops_fb_chrdev(0xffffffffffffff9c, &(0x7f0000000000)='/dev/fb0\x00', 0x20401, 0x0) r0 = openat$auto_tty_fops_tty_io(0xffffffffffffff9c, &(0x7f0000000000)='/dev/tty12\x00', 0x800, 0x0) r1 = socketpair$auto(0x1e, 0x4, 0x8000000000000000, 0x0) ioctl$auto(r0, 0x541c, r1) mmap$auto(0x0, 0x20009, 0x7fffffff, 0xeb1, 0x401, 0x8000) r2 = openat$auto_kernfs_file_fops_kernfs_internal(0xffffffffffffff9c, &(0x7f0000000080)='/sys/devices/virtual/net/lapb4/carrier\x00', 0x0, 0x0) read$auto(r2, 0x0, 0x20) r3 = openat$auto_nsim_dev_health_break_fops_health(0xffffffffffffff9c, &(0x7f0000000000)='/sys/kernel/debug/netdevsim/netdevsim2/health/break_health\x00', 0x48081, 0x0) write$auto(r3, 0x0, 0x2) r4 = openat$auto_loop_ctl_fops_loop(0xffffffffffffff9c, 0x0, 0x40, 0x0) unlink$auto(0x0) ioctl$auto_LOOP_CTL_ADD(r4, 0x4c80, 0xfffffffffffffffd) setfsuid$auto(0xee01) program crashed: INFO: task hung in remove_one testing program (duration=7m12.914264415s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-socket-openat$auto_fb_fops_fb_chrdev-openat$auto_tty_fops_tty_io-socketpair$auto-ioctl$auto-mmap$auto-openat$auto_kernfs_file_fops_kernfs_internal-read$auto-openat$auto_nsim_dev_health_break_fops_health-write$auto-openat$auto_loop_ctl_fops_loop-unlink$auto-ioctl$auto_LOOP_CTL_ADD detailed listing: executing program 0: mmap$auto(0x0, 0x40000040000a, 0xdf, 0x9b72, 0x2, 0x8000) socket(0x2, 0x1, 0x0) openat$auto_fb_fops_fb_chrdev(0xffffffffffffff9c, &(0x7f0000000000)='/dev/fb0\x00', 0x20401, 0x0) r0 = openat$auto_tty_fops_tty_io(0xffffffffffffff9c, &(0x7f0000000000)='/dev/tty12\x00', 0x800, 0x0) r1 = socketpair$auto(0x1e, 0x4, 0x8000000000000000, 0x0) ioctl$auto(r0, 0x541c, r1) mmap$auto(0x0, 0x20009, 0x7fffffff, 0xeb1, 0x401, 0x8000) r2 = openat$auto_kernfs_file_fops_kernfs_internal(0xffffffffffffff9c, &(0x7f0000000080)='/sys/devices/virtual/net/lapb4/carrier\x00', 0x0, 0x0) read$auto(r2, 0x0, 0x20) r3 = openat$auto_nsim_dev_health_break_fops_health(0xffffffffffffff9c, &(0x7f0000000000)='/sys/kernel/debug/netdevsim/netdevsim2/health/break_health\x00', 0x48081, 0x0) write$auto(r3, 0x0, 0x2) r4 = openat$auto_loop_ctl_fops_loop(0xffffffffffffff9c, 0x0, 0x40, 0x0) unlink$auto(0x0) ioctl$auto_LOOP_CTL_ADD(r4, 0x4c80, 0xfffffffffffffffd) program crashed: INFO: task hung in remove_one testing program (duration=7m12.914264415s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-socket-openat$auto_fb_fops_fb_chrdev-openat$auto_tty_fops_tty_io-socketpair$auto-ioctl$auto-mmap$auto-openat$auto_kernfs_file_fops_kernfs_internal-read$auto-openat$auto_nsim_dev_health_break_fops_health-write$auto-openat$auto_loop_ctl_fops_loop-unlink$auto detailed listing: executing program 0: mmap$auto(0x0, 0x40000040000a, 0xdf, 0x9b72, 0x2, 0x8000) socket(0x2, 0x1, 0x0) openat$auto_fb_fops_fb_chrdev(0xffffffffffffff9c, &(0x7f0000000000)='/dev/fb0\x00', 0x20401, 0x0) r0 = openat$auto_tty_fops_tty_io(0xffffffffffffff9c, &(0x7f0000000000)='/dev/tty12\x00', 0x800, 0x0) r1 = socketpair$auto(0x1e, 0x4, 0x8000000000000000, 0x0) ioctl$auto(r0, 0x541c, r1) mmap$auto(0x0, 0x20009, 0x7fffffff, 0xeb1, 0x401, 0x8000) r2 = openat$auto_kernfs_file_fops_kernfs_internal(0xffffffffffffff9c, &(0x7f0000000080)='/sys/devices/virtual/net/lapb4/carrier\x00', 0x0, 0x0) read$auto(r2, 0x0, 0x20) r3 = openat$auto_nsim_dev_health_break_fops_health(0xffffffffffffff9c, &(0x7f0000000000)='/sys/kernel/debug/netdevsim/netdevsim2/health/break_health\x00', 0x48081, 0x0) write$auto(r3, 0x0, 0x2) openat$auto_loop_ctl_fops_loop(0xffffffffffffff9c, 0x0, 0x40, 0x0) unlink$auto(0x0) program crashed: INFO: task hung in remove_one testing program (duration=7m12.914264415s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-socket-openat$auto_fb_fops_fb_chrdev-openat$auto_tty_fops_tty_io-socketpair$auto-ioctl$auto-mmap$auto-openat$auto_kernfs_file_fops_kernfs_internal-read$auto-openat$auto_nsim_dev_health_break_fops_health-write$auto-openat$auto_loop_ctl_fops_loop detailed listing: executing program 0: mmap$auto(0x0, 0x40000040000a, 0xdf, 0x9b72, 0x2, 0x8000) socket(0x2, 0x1, 0x0) openat$auto_fb_fops_fb_chrdev(0xffffffffffffff9c, &(0x7f0000000000)='/dev/fb0\x00', 0x20401, 0x0) r0 = openat$auto_tty_fops_tty_io(0xffffffffffffff9c, &(0x7f0000000000)='/dev/tty12\x00', 0x800, 0x0) r1 = socketpair$auto(0x1e, 0x4, 0x8000000000000000, 0x0) ioctl$auto(r0, 0x541c, r1) mmap$auto(0x0, 0x20009, 0x7fffffff, 0xeb1, 0x401, 0x8000) r2 = openat$auto_kernfs_file_fops_kernfs_internal(0xffffffffffffff9c, &(0x7f0000000080)='/sys/devices/virtual/net/lapb4/carrier\x00', 0x0, 0x0) read$auto(r2, 0x0, 0x20) r3 = openat$auto_nsim_dev_health_break_fops_health(0xffffffffffffff9c, &(0x7f0000000000)='/sys/kernel/debug/netdevsim/netdevsim2/health/break_health\x00', 0x48081, 0x0) write$auto(r3, 0x0, 0x2) openat$auto_loop_ctl_fops_loop(0xffffffffffffff9c, 0x0, 0x40, 0x0) program crashed: INFO: task hung in remove_one testing program (duration=7m12.914264415s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-socket-openat$auto_fb_fops_fb_chrdev-openat$auto_tty_fops_tty_io-socketpair$auto-ioctl$auto-mmap$auto-openat$auto_kernfs_file_fops_kernfs_internal-read$auto-openat$auto_nsim_dev_health_break_fops_health-write$auto detailed listing: executing program 0: mmap$auto(0x0, 0x40000040000a, 0xdf, 0x9b72, 0x2, 0x8000) socket(0x2, 0x1, 0x0) openat$auto_fb_fops_fb_chrdev(0xffffffffffffff9c, &(0x7f0000000000)='/dev/fb0\x00', 0x20401, 0x0) r0 = openat$auto_tty_fops_tty_io(0xffffffffffffff9c, &(0x7f0000000000)='/dev/tty12\x00', 0x800, 0x0) r1 = socketpair$auto(0x1e, 0x4, 0x8000000000000000, 0x0) ioctl$auto(r0, 0x541c, r1) mmap$auto(0x0, 0x20009, 0x7fffffff, 0xeb1, 0x401, 0x8000) r2 = openat$auto_kernfs_file_fops_kernfs_internal(0xffffffffffffff9c, &(0x7f0000000080)='/sys/devices/virtual/net/lapb4/carrier\x00', 0x0, 0x0) read$auto(r2, 0x0, 0x20) r3 = openat$auto_nsim_dev_health_break_fops_health(0xffffffffffffff9c, &(0x7f0000000000)='/sys/kernel/debug/netdevsim/netdevsim2/health/break_health\x00', 0x48081, 0x0) write$auto(r3, 0x0, 0x2) program crashed: INFO: task hung in remove_one testing program (duration=7m12.914264415s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-socket-openat$auto_fb_fops_fb_chrdev-openat$auto_tty_fops_tty_io-socketpair$auto-ioctl$auto-mmap$auto-openat$auto_kernfs_file_fops_kernfs_internal-read$auto-openat$auto_nsim_dev_health_break_fops_health detailed listing: executing program 0: mmap$auto(0x0, 0x40000040000a, 0xdf, 0x9b72, 0x2, 0x8000) socket(0x2, 0x1, 0x0) openat$auto_fb_fops_fb_chrdev(0xffffffffffffff9c, &(0x7f0000000000)='/dev/fb0\x00', 0x20401, 0x0) r0 = openat$auto_tty_fops_tty_io(0xffffffffffffff9c, &(0x7f0000000000)='/dev/tty12\x00', 0x800, 0x0) r1 = socketpair$auto(0x1e, 0x4, 0x8000000000000000, 0x0) ioctl$auto(r0, 0x541c, r1) mmap$auto(0x0, 0x20009, 0x7fffffff, 0xeb1, 0x401, 0x8000) r2 = openat$auto_kernfs_file_fops_kernfs_internal(0xffffffffffffff9c, &(0x7f0000000080)='/sys/devices/virtual/net/lapb4/carrier\x00', 0x0, 0x0) read$auto(r2, 0x0, 0x20) openat$auto_nsim_dev_health_break_fops_health(0xffffffffffffff9c, &(0x7f0000000000)='/sys/kernel/debug/netdevsim/netdevsim2/health/break_health\x00', 0x48081, 0x0) program did not crash testing program (duration=7m12.914264415s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-socket-openat$auto_fb_fops_fb_chrdev-openat$auto_tty_fops_tty_io-socketpair$auto-ioctl$auto-mmap$auto-openat$auto_kernfs_file_fops_kernfs_internal-read$auto-write$auto detailed listing: executing program 0: mmap$auto(0x0, 0x40000040000a, 0xdf, 0x9b72, 0x2, 0x8000) socket(0x2, 0x1, 0x0) openat$auto_fb_fops_fb_chrdev(0xffffffffffffff9c, &(0x7f0000000000)='/dev/fb0\x00', 0x20401, 0x0) r0 = openat$auto_tty_fops_tty_io(0xffffffffffffff9c, &(0x7f0000000000)='/dev/tty12\x00', 0x800, 0x0) r1 = socketpair$auto(0x1e, 0x4, 0x8000000000000000, 0x0) ioctl$auto(r0, 0x541c, r1) mmap$auto(0x0, 0x20009, 0x7fffffff, 0xeb1, 0x401, 0x8000) r2 = openat$auto_kernfs_file_fops_kernfs_internal(0xffffffffffffff9c, &(0x7f0000000080)='/sys/devices/virtual/net/lapb4/carrier\x00', 0x0, 0x0) read$auto(r2, 0x0, 0x20) write$auto(0xffffffffffffffff, 0x0, 0x2) program did not crash testing program (duration=7m12.914264415s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-socket-openat$auto_fb_fops_fb_chrdev-openat$auto_tty_fops_tty_io-socketpair$auto-ioctl$auto-mmap$auto-openat$auto_kernfs_file_fops_kernfs_internal-openat$auto_nsim_dev_health_break_fops_health-write$auto detailed listing: executing program 0: mmap$auto(0x0, 0x40000040000a, 0xdf, 0x9b72, 0x2, 0x8000) socket(0x2, 0x1, 0x0) openat$auto_fb_fops_fb_chrdev(0xffffffffffffff9c, &(0x7f0000000000)='/dev/fb0\x00', 0x20401, 0x0) r0 = openat$auto_tty_fops_tty_io(0xffffffffffffff9c, &(0x7f0000000000)='/dev/tty12\x00', 0x800, 0x0) r1 = socketpair$auto(0x1e, 0x4, 0x8000000000000000, 0x0) ioctl$auto(r0, 0x541c, r1) mmap$auto(0x0, 0x20009, 0x7fffffff, 0xeb1, 0x401, 0x8000) openat$auto_kernfs_file_fops_kernfs_internal(0xffffffffffffff9c, &(0x7f0000000080)='/sys/devices/virtual/net/lapb4/carrier\x00', 0x0, 0x0) r2 = openat$auto_nsim_dev_health_break_fops_health(0xffffffffffffff9c, &(0x7f0000000000)='/sys/kernel/debug/netdevsim/netdevsim2/health/break_health\x00', 0x48081, 0x0) write$auto(r2, 0x0, 0x2) program crashed: INFO: task hung in remove_one testing program (duration=7m12.914264415s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-socket-openat$auto_fb_fops_fb_chrdev-openat$auto_tty_fops_tty_io-socketpair$auto-ioctl$auto-mmap$auto-openat$auto_nsim_dev_health_break_fops_health-write$auto detailed listing: executing program 0: mmap$auto(0x0, 0x40000040000a, 0xdf, 0x9b72, 0x2, 0x8000) socket(0x2, 0x1, 0x0) openat$auto_fb_fops_fb_chrdev(0xffffffffffffff9c, &(0x7f0000000000)='/dev/fb0\x00', 0x20401, 0x0) r0 = openat$auto_tty_fops_tty_io(0xffffffffffffff9c, &(0x7f0000000000)='/dev/tty12\x00', 0x800, 0x0) r1 = socketpair$auto(0x1e, 0x4, 0x8000000000000000, 0x0) ioctl$auto(r0, 0x541c, r1) mmap$auto(0x0, 0x20009, 0x7fffffff, 0xeb1, 0x401, 0x8000) r2 = openat$auto_nsim_dev_health_break_fops_health(0xffffffffffffff9c, &(0x7f0000000000)='/sys/kernel/debug/netdevsim/netdevsim2/health/break_health\x00', 0x48081, 0x0) write$auto(r2, 0x0, 0x2) program crashed: INFO: task hung in devlink_health_report testing program (duration=7m12.914264415s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-socket-openat$auto_fb_fops_fb_chrdev-openat$auto_tty_fops_tty_io-socketpair$auto-ioctl$auto-openat$auto_nsim_dev_health_break_fops_health-write$auto detailed listing: executing program 0: mmap$auto(0x0, 0x40000040000a, 0xdf, 0x9b72, 0x2, 0x8000) socket(0x2, 0x1, 0x0) openat$auto_fb_fops_fb_chrdev(0xffffffffffffff9c, &(0x7f0000000000)='/dev/fb0\x00', 0x20401, 0x0) r0 = openat$auto_tty_fops_tty_io(0xffffffffffffff9c, &(0x7f0000000000)='/dev/tty12\x00', 0x800, 0x0) r1 = socketpair$auto(0x1e, 0x4, 0x8000000000000000, 0x0) ioctl$auto(r0, 0x541c, r1) r2 = openat$auto_nsim_dev_health_break_fops_health(0xffffffffffffff9c, &(0x7f0000000000)='/sys/kernel/debug/netdevsim/netdevsim2/health/break_health\x00', 0x48081, 0x0) write$auto(r2, 0x0, 0x2) program did not crash testing program (duration=7m12.914264415s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-socket-openat$auto_fb_fops_fb_chrdev-openat$auto_tty_fops_tty_io-socketpair$auto-mmap$auto-openat$auto_nsim_dev_health_break_fops_health-write$auto detailed listing: executing program 0: mmap$auto(0x0, 0x40000040000a, 0xdf, 0x9b72, 0x2, 0x8000) socket(0x2, 0x1, 0x0) openat$auto_fb_fops_fb_chrdev(0xffffffffffffff9c, &(0x7f0000000000)='/dev/fb0\x00', 0x20401, 0x0) openat$auto_tty_fops_tty_io(0xffffffffffffff9c, &(0x7f0000000000)='/dev/tty12\x00', 0x800, 0x0) socketpair$auto(0x1e, 0x4, 0x8000000000000000, 0x0) mmap$auto(0x0, 0x20009, 0x7fffffff, 0xeb1, 0x401, 0x8000) r0 = openat$auto_nsim_dev_health_break_fops_health(0xffffffffffffff9c, &(0x7f0000000000)='/sys/kernel/debug/netdevsim/netdevsim2/health/break_health\x00', 0x48081, 0x0) write$auto(r0, 0x0, 0x2) program crashed: INFO: task hung in remove_one testing program (duration=7m12.914264415s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-socket-openat$auto_fb_fops_fb_chrdev-openat$auto_tty_fops_tty_io-mmap$auto-openat$auto_nsim_dev_health_break_fops_health-write$auto detailed listing: executing program 0: mmap$auto(0x0, 0x40000040000a, 0xdf, 0x9b72, 0x2, 0x8000) socket(0x2, 0x1, 0x0) openat$auto_fb_fops_fb_chrdev(0xffffffffffffff9c, &(0x7f0000000000)='/dev/fb0\x00', 0x20401, 0x0) openat$auto_tty_fops_tty_io(0xffffffffffffff9c, &(0x7f0000000000)='/dev/tty12\x00', 0x800, 0x0) mmap$auto(0x0, 0x20009, 0x7fffffff, 0xeb1, 0x401, 0x8000) r0 = openat$auto_nsim_dev_health_break_fops_health(0xffffffffffffff9c, &(0x7f0000000000)='/sys/kernel/debug/netdevsim/netdevsim2/health/break_health\x00', 0x48081, 0x0) write$auto(r0, 0x0, 0x2) program crashed: INFO: task hung in remove_one testing program (duration=7m12.914264415s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-socket-openat$auto_fb_fops_fb_chrdev-mmap$auto-openat$auto_nsim_dev_health_break_fops_health-write$auto detailed listing: executing program 0: mmap$auto(0x0, 0x40000040000a, 0xdf, 0x9b72, 0x2, 0x8000) socket(0x2, 0x1, 0x0) openat$auto_fb_fops_fb_chrdev(0xffffffffffffff9c, &(0x7f0000000000)='/dev/fb0\x00', 0x20401, 0x0) mmap$auto(0x0, 0x20009, 0x7fffffff, 0xeb1, 0x401, 0x8000) r0 = openat$auto_nsim_dev_health_break_fops_health(0xffffffffffffff9c, &(0x7f0000000000)='/sys/kernel/debug/netdevsim/netdevsim2/health/break_health\x00', 0x48081, 0x0) write$auto(r0, 0x0, 0x2) program crashed: INFO: task hung in remove_one testing program (duration=7m12.914264415s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-socket-mmap$auto-openat$auto_nsim_dev_health_break_fops_health-write$auto detailed listing: executing program 0: mmap$auto(0x0, 0x40000040000a, 0xdf, 0x9b72, 0x2, 0x8000) socket(0x2, 0x1, 0x0) mmap$auto(0x0, 0x20009, 0x7fffffff, 0xeb1, 0x401, 0x8000) r0 = openat$auto_nsim_dev_health_break_fops_health(0xffffffffffffff9c, &(0x7f0000000000)='/sys/kernel/debug/netdevsim/netdevsim2/health/break_health\x00', 0x48081, 0x0) write$auto(r0, 0x0, 0x2) program crashed: INFO: task hung in remove_one testing program (duration=7m12.914264415s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-mmap$auto-openat$auto_nsim_dev_health_break_fops_health-write$auto detailed listing: executing program 0: mmap$auto(0x0, 0x40000040000a, 0xdf, 0x9b72, 0x2, 0x8000) mmap$auto(0x0, 0x20009, 0x7fffffff, 0xeb1, 0x401, 0x8000) r0 = openat$auto_nsim_dev_health_break_fops_health(0xffffffffffffff9c, &(0x7f0000000000)='/sys/kernel/debug/netdevsim/netdevsim2/health/break_health\x00', 0x48081, 0x0) write$auto(r0, 0x0, 0x2) program crashed: INFO: task hung in remove_one testing program (duration=7m12.914264415s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-openat$auto_nsim_dev_health_break_fops_health-write$auto detailed listing: executing program 0: mmap$auto(0x0, 0x20009, 0x7fffffff, 0xeb1, 0x401, 0x8000) r0 = openat$auto_nsim_dev_health_break_fops_health(0xffffffffffffff9c, &(0x7f0000000000)='/sys/kernel/debug/netdevsim/netdevsim2/health/break_health\x00', 0x48081, 0x0) write$auto(r0, 0x0, 0x2) program crashed: INFO: task hung in remove_one testing program (duration=7m12.914264415s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-openat$auto_nsim_dev_health_break_fops_health-write$auto detailed listing: executing program 0: mmap$auto(0x0, 0x20009, 0x7fffffff, 0xeb1, 0x401, 0x8000) r0 = openat$auto_nsim_dev_health_break_fops_health(0xffffffffffffff9c, 0x0, 0x48081, 0x0) write$auto(r0, 0x0, 0x2) program did not crash extracting C reproducer testing compiled C program (duration=7m12.914264415s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-openat$auto_nsim_dev_health_break_fops_health-write$auto program crashed: no output from test machine a never seen crash title: no output from test machine, ignore simplifying guilty program options testing program (duration=7m12.914264415s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-openat$auto_nsim_dev_health_break_fops_health-write$auto detailed listing: executing program 0: mmap$auto(0x0, 0x20009, 0x7fffffff, 0xeb1, 0x401, 0x8000) r0 = openat$auto_nsim_dev_health_break_fops_health(0xffffffffffffff9c, &(0x7f0000000000)='/sys/kernel/debug/netdevsim/netdevsim2/health/break_health\x00', 0x48081, 0x0) write$auto(r0, 0x0, 0x2) program crashed: INFO: task hung in remove_one extracting C reproducer testing compiled C program (duration=7m12.914264415s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-openat$auto_nsim_dev_health_break_fops_health-write$auto program crashed: no output from test machine a never seen crash title: no output from test machine, ignore testing program (duration=7m12.914264415s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-openat$auto_nsim_dev_health_break_fops_health-write$auto detailed listing: executing program 0: mmap$auto(0x0, 0x20009, 0x7fffffff, 0xeb1, 0x401, 0x8000) r0 = openat$auto_nsim_dev_health_break_fops_health(0xffffffffffffff9c, &(0x7f0000000000)='/sys/kernel/debug/netdevsim/netdevsim2/health/break_health\x00', 0x48081, 0x0) write$auto(r0, 0x0, 0x2) program did not crash reproducing took 2h36m7.646499583s repro crashed as (corrupted=false): INFO: task kworker/u8:4:9010 blocked for more than 143 seconds. Not tainted 6.16.0-rc1-syzkaller-00101-g27605c8c0f69 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u8:4 state:D stack:25928 pid:9010 tgid:9010 ppid:2 task_flags:0x4208060 flags:0x00004000 Workqueue: netns cleanup_net Call Trace: context_switch kernel/sched/core.c:5396 [inline] __schedule+0x116a/0x5de0 kernel/sched/core.c:6785 __schedule_loop kernel/sched/core.c:6863 [inline] schedule+0xe7/0x3a0 kernel/sched/core.c:6878 schedule_timeout+0x257/0x290 kernel/time/sleep_timeout.c:75 do_wait_for_common kernel/sched/completion.c:95 [inline] __wait_for_common+0x2ff/0x4e0 kernel/sched/completion.c:116 __debugfs_file_removed fs/debugfs/inode.c:775 [inline] remove_one+0x312/0x420 fs/debugfs/inode.c:782 simple_recursive_removal+0x21b/0x690 fs/libfs.c:636 debugfs_remove+0x5d/0x80 fs/debugfs/inode.c:805 nsim_dev_health_exit+0x3b/0xe0 drivers/net/netdevsim/health.c:227 nsim_dev_reload_destroy+0x144/0x4d0 drivers/net/netdevsim/dev.c:1664 nsim_dev_reload_down+0x6e/0xd0 drivers/net/netdevsim/dev.c:968 devlink_reload+0x1a1/0x7c0 net/devlink/dev.c:461 devlink_pernet_pre_exit+0x1a0/0x2b0 net/devlink/core.c:509 ops_pre_exit_list net/core/net_namespace.c:162 [inline] ops_undo_list+0x184/0xab0 net/core/net_namespace.c:235 cleanup_net+0x408/0x890 net/core/net_namespace.c:686 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3321 [inline] worker_thread+0x6c8/0xf10 kernel/workqueue.c:3402 kthread+0x3c2/0x780 kernel/kthread.c:464 ret_from_fork+0x5d4/0x6f0 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 INFO: task syz-executor:9617 blocked for more than 143 seconds. Not tainted 6.16.0-rc1-syzkaller-00101-g27605c8c0f69 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:24296 pid:9617 tgid:9617 ppid:1 task_flags:0x400140 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5396 [inline] __schedule+0x116a/0x5de0 kernel/sched/core.c:6785 __schedule_loop kernel/sched/core.c:6863 [inline] schedule+0xe7/0x3a0 kernel/sched/core.c:6878 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6935 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x6c7/0xb90 kernel/locking/mutex.c:747 device_lock include/linux/device.h:884 [inline] device_del+0xa0/0x9f0 drivers/base/core.c:3843 device_unregister+0x1d/0xc0 drivers/base/core.c:3922 nsim_bus_dev_del drivers/net/netdevsim/bus.c:462 [inline] del_device_store+0x355/0x4a0 drivers/net/netdevsim/bus.c:226 bus_attr_store+0x74/0xb0 drivers/base/bus.c:172 sysfs_kf_write+0xf2/0x150 fs/sysfs/file.c:145 kernfs_fop_write_iter+0x351/0x510 fs/kernfs/file.c:334 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x6c4/0x1150 fs/read_write.c:686 ksys_write+0x12a/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x490 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f944978d3df RSP: 002b:00007ffd29620f60 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f944978d3df RDX: 0000000000000001 RSI: 00007ffd29620fb0 RDI: 0000000000000005 RBP: 00007f9449811d8d R08: 0000000000000000 R09: 00007ffd29620db7 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000001 R13: 00007ffd29620fb0 R14: 00007f944a4e4620 R15: 0000000000000003 INFO: task syz.0.3491:9641 blocked for more than 143 seconds. Not tainted 6.16.0-rc1-syzkaller-00101-g27605c8c0f69 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.3491 state:D stack:27512 pid:9641 tgid:9641 ppid:8401 task_flags:0x400140 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5396 [inline] __schedule+0x116a/0x5de0 kernel/sched/core.c:6785 __schedule_loop kernel/sched/core.c:6863 [inline] schedule+0xe7/0x3a0 kernel/sched/core.c:6878 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6935 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x6c7/0xb90 kernel/locking/mutex.c:747 devlink_health_report+0x3ba/0x9c0 net/devlink/health.c:627 nsim_dev_health_break_write+0x166/0x210 drivers/net/netdevsim/health.c:162 full_proxy_write+0x13f/0x200 fs/debugfs/file.c:398 vfs_write+0x2a0/0x1150 fs/read_write.c:684 ksys_write+0x12a/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x490 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6402b8e929 RSP: 002b:00007ffe2d46eea8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f6402db5fa0 RCX: 00007f6402b8e929 RDX: 0000000000000002 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007f6402c10b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f6402db5fa0 R14: 00007f6402db5fa0 R15: 0000000000000003 INFO: task syz.1.3513:9666 blocked for more than 144 seconds. Not tainted 6.16.0-rc1-syzkaller-00101-g27605c8c0f69 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.3513 state:D stack:28216 pid:9666 tgid:9666 ppid:8963 task_flags:0x400140 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5396 [inline] __schedule+0x116a/0x5de0 kernel/sched/core.c:6785 __schedule_loop kernel/sched/core.c:6863 [inline] schedule+0xe7/0x3a0 kernel/sched/core.c:6878 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6935 rwsem_down_read_slowpath+0x62f/0xb60 kernel/locking/rwsem.c:1084 __down_read_common kernel/locking/rwsem.c:1248 [inline] __down_read kernel/locking/rwsem.c:1261 [inline] down_read+0xef/0x480 kernel/locking/rwsem.c:1526 inode_lock_shared include/linux/fs.h:882 [inline] open_last_lookups fs/namei.c:3806 [inline] path_openat+0x818/0x2cb0 fs/namei.c:4043 do_filp_open+0x20b/0x470 fs/namei.c:4073 do_sys_openat2+0x11b/0x1d0 fs/open.c:1437 do_sys_open fs/open.c:1452 [inline] __do_sys_openat fs/open.c:1468 [inline] __se_sys_openat fs/open.c:1463 [inline] __x64_sys_openat+0x174/0x210 fs/open.c:1463 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x490 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f149f78e929 RSP: 002b:00007fffe7393ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f149f9b5fa0 RCX: 00007f149f78e929 RDX: 0000000000048081 RSI: 0000200000000000 RDI: ffffffffffffff9c RBP: 00007f149f810b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f149f9b5fa0 R14: 00007f149f9b5fa0 R15: 0000000000000004 INFO: task syz.3.3514:9667 blocked for more than 144 seconds. Not tainted 6.16.0-rc1-syzkaller-00101-g27605c8c0f69 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.3.3514 state:D stack:27992 pid:9667 tgid:9667 ppid:5984 task_flags:0x400140 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5396 [inline] __schedule+0x116a/0x5de0 kernel/sched/core.c:6785 __schedule_loop kernel/sched/core.c:6863 [inline] schedule+0xe7/0x3a0 kernel/sched/core.c:6878 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6935 rwsem_down_read_slowpath+0x62f/0xb60 kernel/locking/rwsem.c:1084 __down_read_common kernel/locking/rwsem.c:1248 [inline] __down_read kernel/locking/rwsem.c:1261 [inline] down_read+0xef/0x480 kernel/locking/rwsem.c:1526 inode_lock_shared include/linux/fs.h:882 [inline] open_last_lookups fs/namei.c:3806 [inline] path_openat+0x818/0x2cb0 fs/namei.c:4043 do_filp_open+0x20b/0x470 fs/namei.c:4073 do_sys_openat2+0x11b/0x1d0 fs/open.c:1437 do_sys_open fs/open.c:1452 [inline] __do_sys_openat fs/open.c:1468 [inline] __se_sys_openat fs/open.c:1463 [inline] __x64_sys_openat+0x174/0x210 fs/open.c:1463 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x490 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f7b63f8e929 RSP: 002b:00007ffd25306148 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f7b641b5fa0 RCX: 00007f7b63f8e929 RDX: 0000000000048081 RSI: 0000200000000000 RDI: ffffffffffffff9c RBP: 00007f7b64010b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f7b641b5fa0 R14: 00007f7b641b5fa0 R15: 0000000000000004 Showing all locks held in the system: 1 lock held by khungtaskd/31: #0: ffffffff8e3c46c0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #0: ffffffff8e3c46c0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline] #0: ffffffff8e3c46c0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x36/0x1c0 kernel/locking/lockdep.c:6770 4 locks held by kworker/u8:3/49: #0: ffff8880b843bdd8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:606 #1: ffff8880b8424088 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x2c1/0x8e0 kernel/sched/psi.c:987 #2: ffff8880b8425b18 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x127/0x1d0 kernel/time/timer.c:1004 #3: ffffffff9ad37410 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_activate+0x14c/0x4c0 lib/debugobjects.c:818 2 locks held by getty/5594: #0: ffff88803177d0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243 #1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x41b/0x14f0 drivers/tty/n_tty.c:2222 6 locks held by kworker/u8:4/9010: #0: ffff88801c2fe148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x12a2/0x1b70 kernel/workqueue.c:3213 #1: ffffc9000db27d10 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x929/0x1b70 kernel/workqueue.c:3214 #2: ffffffff90137c90 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xad/0x890 net/core/net_namespace.c:662 #3: ffff88807681c0e8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:884 [inline] #3: ffff88807681c0e8 (&dev->mutex){....}-{4:4}, at: devl_dev_lock net/devlink/devl_internal.h:108 [inline] #3: ffff88807681c0e8 (&dev->mutex){....}-{4:4}, at: devlink_pernet_pre_exit+0x12c/0x2b0 net/devlink/core.c:506 #4: ffff88823bfd8250 (&devlink->lock_key#5){+.+.}-{4:4}, at: devl_lock net/devlink/core.c:276 [inline] #4: ffff88823bfd8250 (&devlink->lock_key#5){+.+.}-{4:4}, at: devl_dev_lock net/devlink/devl_internal.h:109 [inline] #4: ffff88823bfd8250 (&devlink->lock_key#5){+.+.}-{4:4}, at: devlink_pernet_pre_exit+0x136/0x2b0 net/devlink/core.c:506 #5: ffff88805b5d24f0 (&sb->s_type->i_mutex_key#3){++++}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline] #5: ffff88805b5d24f0 (&sb->s_type->i_mutex_key#3){++++}-{4:4}, at: simple_recursive_removal+0x2c5/0x690 fs/libfs.c:628 5 locks held by syz-executor/9617: #0: ffff888035c12428 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0x12a/0x250 fs/read_write.c:738 #1: ffff88805d3e3888 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x28f/0x510 fs/kernfs/file.c:325 #2: ffff88814438be18 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2b2/0x510 fs/kernfs/file.c:326 #3: ffffffff8f6eab08 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd1/0x4a0 drivers/net/netdevsim/bus.c:216 #4: ffff88807681c0e8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:884 [inline] #4: ffff88807681c0e8 (&dev->mutex){....}-{4:4}, at: device_del+0xa0/0x9f0 drivers/base/core.c:3843 2 locks held by syz.0.3491/9641: #0: ffff8881412ca428 (sb_writers#8){.+.+}-{0:0}, at: ksys_write+0x12a/0x250 fs/read_write.c:738 #1: ffff88823bfd8250 (&devlink->lock_key#5){+.+.}-{4:4}, at: devlink_health_report+0x3ba/0x9c0 net/devlink/health.c:627 2 locks held by syz.1.3513/9666: #0: ffff8881412ca428 (sb_writers#8){.+.+}-{0:0}, at: open_last_lookups fs/namei.c:3796 [inline] #0: ffff8881412ca428 (sb_writers#8){.+.+}-{0:0}, at: path_openat+0x1ec8/0x2cb0 fs/namei.c:4043 #1: ffff88805b5d24f0 (&sb->s_type->i_mutex_key#3){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:882 [inline] #1: ffff88805b5d24f0 (&sb->s_type->i_mutex_key#3){++++}-{4:4}, at: open_last_lookups fs/namei.c:3806 [inline] #1: ffff88805b5d24f0 (&sb->s_type->i_mutex_key#3){++++}-{4:4}, at: path_openat+0x818/0x2cb0 fs/namei.c:4043 2 locks held by syz.3.3514/9667: #0: ffff8881412ca428 (sb_writers#8){.+.+}-{0:0}, at: open_last_lookups fs/namei.c:3796 [inline] #0: ffff8881412ca428 (sb_writers#8){.+.+}-{0:0}, at: path_openat+0x1ec8/0x2cb0 fs/namei.c:4043 #1: ffff88805b5d24f0 (&sb->s_type->i_mutex_key#3){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:882 [inline] #1: ffff88805b5d24f0 (&sb->s_type->i_mutex_key#3){++++}-{4:4}, at: open_last_lookups fs/namei.c:3806 [inline] #1: ffff88805b5d24f0 (&sb->s_type->i_mutex_key#3){++++}-{4:4}, at: path_openat+0x818/0x2cb0 fs/namei.c:4043 4 locks held by syz-executor/9677: #0: ffff888035c12428 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0x12a/0x250 fs/read_write.c:738 #1: ffff88814cd58488 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x28f/0x510 fs/kernfs/file.c:325 #2: ffff88814438be18 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2b2/0x510 fs/kernfs/file.c:326 #3: ffffffff8f6eab08 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd1/0x4a0 drivers/net/netdevsim/bus.c:216 4 locks held by syz-executor/9681: #0: ffff888035c12428 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0x12a/0x250 fs/read_write.c:738 #1: ffff888034aec488 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x28f/0x510 fs/kernfs/file.c:325 #2: ffff88814438be18 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2b2/0x510 fs/kernfs/file.c:326 #3: ffffffff8f6eab08 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd1/0x4a0 drivers/net/netdevsim/bus.c:216 4 locks held by syz-executor/9682: #0: ffff888035c12428 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0x12a/0x250 fs/read_write.c:738 #1: ffff888144784c88 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x28f/0x510 fs/kernfs/file.c:325 #2: ffff88814438be18 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2b2/0x510 fs/kernfs/file.c:326 #3: ffffffff8f6eab08 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd1/0x4a0 drivers/net/netdevsim/bus.c:216 4 locks held by syz-executor/9707: #0: ffff888035c12428 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0x12a/0x250 fs/read_write.c:738 #1: ffff88805ba12088 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x28f/0x510 fs/kernfs/file.c:325 #2: ffff88814438be18 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2b2/0x510 fs/kernfs/file.c:326 #3: ffffffff8f6eab08 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd1/0x4a0 drivers/net/netdevsim/bus.c:216 4 locks held by syz-executor/9726: #0: ffff888035c12428 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0x12a/0x250 fs/read_write.c:738 #1: ffff88805d6cdc88 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x28f/0x510 fs/kernfs/file.c:325 #2: ffff88814438be18 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2b2/0x510 fs/kernfs/file.c:326 #3: ffffffff8f6eab08 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd1/0x4a0 drivers/net/netdevsim/bus.c:216 4 locks held by syz-executor/9728: #0: ffff888035c12428 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0x12a/0x250 fs/read_write.c:738 #1: ffff88805e194488 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x28f/0x510 fs/kernfs/file.c:325 #2: ffff88814438be18 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2b2/0x510 fs/kernfs/file.c:326 #3: ffffffff8f6eab08 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd1/0x4a0 drivers/net/netdevsim/bus.c:216 4 locks held by syz-executor/9731: #0: ffff888035c12428 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0x12a/0x250 fs/read_write.c:738 #1: ffff888032286488 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x28f/0x510 fs/kernfs/file.c:325 #2: ffff88814438be18 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2b2/0x510 fs/kernfs/file.c:326 #3: ffffffff8f6eab08 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd1/0x4a0 drivers/net/netdevsim/bus.c:216 4 locks held by syz-executor/9757: #0: ffff888035c12428 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0x12a/0x250 fs/read_write.c:738 #1: ffff888033269488 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x28f/0x510 fs/kernfs/file.c:325 #2: ffff88814438be18 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2b2/0x510 fs/kernfs/file.c:326 #3: ffffffff8f6eab08 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd1/0x4a0 drivers/net/netdevsim/bus.c:216 4 locks held by syz-executor/9776: #0: ffff888035c12428 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0x12a/0x250 fs/read_write.c:738 #1: ffff888033f54088 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x28f/0x510 fs/kernfs/file.c:325 #2: ffff88814438be18 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2b2/0x510 fs/kernfs/file.c:326 #3: ffffffff8f6eab08 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd1/0x4a0 drivers/net/netdevsim/bus.c:216 4 locks held by syz-executor/9779: #0: ffff888035c12428 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0x12a/0x250 fs/read_write.c:738 #1: ffff888034694888 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x28f/0x510 fs/kernfs/file.c:325 #2: ffff88814438be18 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2b2/0x510 fs/kernfs/file.c:326 #3: ffffffff8f6eab08 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd1/0x4a0 drivers/net/netdevsim/bus.c:216 4 locks held by syz-executor/9780: #0: ffff888035c12428 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0x12a/0x250 fs/read_write.c:738 #1: ffff88803200b088 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x28f/0x510 fs/kernfs/file.c:325 #2: ffff88814438be18 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2b2/0x510 fs/kernfs/file.c:326 #3: ffffffff8f6eab08 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd1/0x4a0 drivers/net/netdevsim/bus.c:216 ============================================= NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc1-syzkaller-00101-g27605c8c0f69 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:307 [inline] watchdog+0xf70/0x12c0 kernel/hung_task.c:470 kthread+0x3c2/0x780 kernel/kthread.c:464 ret_from_fork+0x5d4/0x6f0 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 12 Comm: kworker/u8:0 Not tainted 6.16.0-rc1-syzkaller-00101-g27605c8c0f69 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:mark_lock+0x7a/0x610 kernel/locking/lockdep.c:4735 Code: ff 1f 0f b7 c0 48 0f a3 05 e3 fb 1a 14 0f 83 86 00 00 00 48 8d 04 80 48 8d 04 80 48 8d 04 c5 60 c9 b2 95 4c 89 ea 48 23 50 60 01 00 00 00 74 7f 48 8b 54 24 68 65 48 2b 15 5a 16 14 12 0f 85 RSP: 0018:ffffc90000117990 EFLAGS: 00000002 RAX: ffffffff95b35f60 RBX: 0000000000000002 RCX: 0000000000000002 RDX: 0000000000000004 RSI: ffff88801e29e540 RDI: ffff88801e29da00 RBP: ffffc90000117a28 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000050 R11: 0000000000000001 R12: ffff88801e29e540 R13: 0000000000000004 R14: 0000000000000003 R15: ffff88801e29da00 FS: 0000000000000000(0000) GS:ffff888124962000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000563fb964e838 CR3: 000000000e182000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: mark_usage kernel/locking/lockdep.c:4665 [inline] __lock_acquire+0x3b7/0x1c90 kernel/locking/lockdep.c:5194 lock_acquire kernel/locking/lockdep.c:5871 [inline] lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5828 sched_submit_work kernel/sched/core.c:6819 [inline] schedule+0x21c/0x3a0 kernel/sched/core.c:6877 toggle_allocation_gate mm/kfence/core.c:852 [inline] toggle_allocation_gate+0x1d9/0x280 mm/kfence/core.c:842 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3321 [inline] worker_thread+0x6c8/0xf10 kernel/workqueue.c:3402 kthread+0x3c2/0x780 kernel/kthread.c:464 ret_from_fork+0x5d4/0x6f0 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 final repro crashed as (corrupted=false): INFO: task kworker/u8:4:9010 blocked for more than 143 seconds. Not tainted 6.16.0-rc1-syzkaller-00101-g27605c8c0f69 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u8:4 state:D stack:25928 pid:9010 tgid:9010 ppid:2 task_flags:0x4208060 flags:0x00004000 Workqueue: netns cleanup_net Call Trace: context_switch kernel/sched/core.c:5396 [inline] __schedule+0x116a/0x5de0 kernel/sched/core.c:6785 __schedule_loop kernel/sched/core.c:6863 [inline] schedule+0xe7/0x3a0 kernel/sched/core.c:6878 schedule_timeout+0x257/0x290 kernel/time/sleep_timeout.c:75 do_wait_for_common kernel/sched/completion.c:95 [inline] __wait_for_common+0x2ff/0x4e0 kernel/sched/completion.c:116 __debugfs_file_removed fs/debugfs/inode.c:775 [inline] remove_one+0x312/0x420 fs/debugfs/inode.c:782 simple_recursive_removal+0x21b/0x690 fs/libfs.c:636 debugfs_remove+0x5d/0x80 fs/debugfs/inode.c:805 nsim_dev_health_exit+0x3b/0xe0 drivers/net/netdevsim/health.c:227 nsim_dev_reload_destroy+0x144/0x4d0 drivers/net/netdevsim/dev.c:1664 nsim_dev_reload_down+0x6e/0xd0 drivers/net/netdevsim/dev.c:968 devlink_reload+0x1a1/0x7c0 net/devlink/dev.c:461 devlink_pernet_pre_exit+0x1a0/0x2b0 net/devlink/core.c:509 ops_pre_exit_list net/core/net_namespace.c:162 [inline] ops_undo_list+0x184/0xab0 net/core/net_namespace.c:235 cleanup_net+0x408/0x890 net/core/net_namespace.c:686 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3321 [inline] worker_thread+0x6c8/0xf10 kernel/workqueue.c:3402 kthread+0x3c2/0x780 kernel/kthread.c:464 ret_from_fork+0x5d4/0x6f0 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 INFO: task syz-executor:9617 blocked for more than 143 seconds. Not tainted 6.16.0-rc1-syzkaller-00101-g27605c8c0f69 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:24296 pid:9617 tgid:9617 ppid:1 task_flags:0x400140 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5396 [inline] __schedule+0x116a/0x5de0 kernel/sched/core.c:6785 __schedule_loop kernel/sched/core.c:6863 [inline] schedule+0xe7/0x3a0 kernel/sched/core.c:6878 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6935 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x6c7/0xb90 kernel/locking/mutex.c:747 device_lock include/linux/device.h:884 [inline] device_del+0xa0/0x9f0 drivers/base/core.c:3843 device_unregister+0x1d/0xc0 drivers/base/core.c:3922 nsim_bus_dev_del drivers/net/netdevsim/bus.c:462 [inline] del_device_store+0x355/0x4a0 drivers/net/netdevsim/bus.c:226 bus_attr_store+0x74/0xb0 drivers/base/bus.c:172 sysfs_kf_write+0xf2/0x150 fs/sysfs/file.c:145 kernfs_fop_write_iter+0x351/0x510 fs/kernfs/file.c:334 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x6c4/0x1150 fs/read_write.c:686 ksys_write+0x12a/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x490 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f944978d3df RSP: 002b:00007ffd29620f60 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f944978d3df RDX: 0000000000000001 RSI: 00007ffd29620fb0 RDI: 0000000000000005 RBP: 00007f9449811d8d R08: 0000000000000000 R09: 00007ffd29620db7 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000001 R13: 00007ffd29620fb0 R14: 00007f944a4e4620 R15: 0000000000000003 INFO: task syz.0.3491:9641 blocked for more than 143 seconds. Not tainted 6.16.0-rc1-syzkaller-00101-g27605c8c0f69 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.3491 state:D stack:27512 pid:9641 tgid:9641 ppid:8401 task_flags:0x400140 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5396 [inline] __schedule+0x116a/0x5de0 kernel/sched/core.c:6785 __schedule_loop kernel/sched/core.c:6863 [inline] schedule+0xe7/0x3a0 kernel/sched/core.c:6878 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6935 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x6c7/0xb90 kernel/locking/mutex.c:747 devlink_health_report+0x3ba/0x9c0 net/devlink/health.c:627 nsim_dev_health_break_write+0x166/0x210 drivers/net/netdevsim/health.c:162 full_proxy_write+0x13f/0x200 fs/debugfs/file.c:398 vfs_write+0x2a0/0x1150 fs/read_write.c:684 ksys_write+0x12a/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x490 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6402b8e929 RSP: 002b:00007ffe2d46eea8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f6402db5fa0 RCX: 00007f6402b8e929 RDX: 0000000000000002 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007f6402c10b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f6402db5fa0 R14: 00007f6402db5fa0 R15: 0000000000000003 INFO: task syz.1.3513:9666 blocked for more than 144 seconds. Not tainted 6.16.0-rc1-syzkaller-00101-g27605c8c0f69 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.3513 state:D stack:28216 pid:9666 tgid:9666 ppid:8963 task_flags:0x400140 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5396 [inline] __schedule+0x116a/0x5de0 kernel/sched/core.c:6785 __schedule_loop kernel/sched/core.c:6863 [inline] schedule+0xe7/0x3a0 kernel/sched/core.c:6878 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6935 rwsem_down_read_slowpath+0x62f/0xb60 kernel/locking/rwsem.c:1084 __down_read_common kernel/locking/rwsem.c:1248 [inline] __down_read kernel/locking/rwsem.c:1261 [inline] down_read+0xef/0x480 kernel/locking/rwsem.c:1526 inode_lock_shared include/linux/fs.h:882 [inline] open_last_lookups fs/namei.c:3806 [inline] path_openat+0x818/0x2cb0 fs/namei.c:4043 do_filp_open+0x20b/0x470 fs/namei.c:4073 do_sys_openat2+0x11b/0x1d0 fs/open.c:1437 do_sys_open fs/open.c:1452 [inline] __do_sys_openat fs/open.c:1468 [inline] __se_sys_openat fs/open.c:1463 [inline] __x64_sys_openat+0x174/0x210 fs/open.c:1463 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x490 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f149f78e929 RSP: 002b:00007fffe7393ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f149f9b5fa0 RCX: 00007f149f78e929 RDX: 0000000000048081 RSI: 0000200000000000 RDI: ffffffffffffff9c RBP: 00007f149f810b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f149f9b5fa0 R14: 00007f149f9b5fa0 R15: 0000000000000004 INFO: task syz.3.3514:9667 blocked for more than 144 seconds. Not tainted 6.16.0-rc1-syzkaller-00101-g27605c8c0f69 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.3.3514 state:D stack:27992 pid:9667 tgid:9667 ppid:5984 task_flags:0x400140 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5396 [inline] __schedule+0x116a/0x5de0 kernel/sched/core.c:6785 __schedule_loop kernel/sched/core.c:6863 [inline] schedule+0xe7/0x3a0 kernel/sched/core.c:6878 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6935 rwsem_down_read_slowpath+0x62f/0xb60 kernel/locking/rwsem.c:1084 __down_read_common kernel/locking/rwsem.c:1248 [inline] __down_read kernel/locking/rwsem.c:1261 [inline] down_read+0xef/0x480 kernel/locking/rwsem.c:1526 inode_lock_shared include/linux/fs.h:882 [inline] open_last_lookups fs/namei.c:3806 [inline] path_openat+0x818/0x2cb0 fs/namei.c:4043 do_filp_open+0x20b/0x470 fs/namei.c:4073 do_sys_openat2+0x11b/0x1d0 fs/open.c:1437 do_sys_open fs/open.c:1452 [inline] __do_sys_openat fs/open.c:1468 [inline] __se_sys_openat fs/open.c:1463 [inline] __x64_sys_openat+0x174/0x210 fs/open.c:1463 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x490 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f7b63f8e929 RSP: 002b:00007ffd25306148 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f7b641b5fa0 RCX: 00007f7b63f8e929 RDX: 0000000000048081 RSI: 0000200000000000 RDI: ffffffffffffff9c RBP: 00007f7b64010b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f7b641b5fa0 R14: 00007f7b641b5fa0 R15: 0000000000000004 Showing all locks held in the system: 1 lock held by khungtaskd/31: #0: ffffffff8e3c46c0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #0: ffffffff8e3c46c0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline] #0: ffffffff8e3c46c0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x36/0x1c0 kernel/locking/lockdep.c:6770 4 locks held by kworker/u8:3/49: #0: ffff8880b843bdd8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:606 #1: ffff8880b8424088 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x2c1/0x8e0 kernel/sched/psi.c:987 #2: ffff8880b8425b18 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x127/0x1d0 kernel/time/timer.c:1004 #3: ffffffff9ad37410 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_activate+0x14c/0x4c0 lib/debugobjects.c:818 2 locks held by getty/5594: #0: ffff88803177d0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243 #1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x41b/0x14f0 drivers/tty/n_tty.c:2222 6 locks held by kworker/u8:4/9010: #0: ffff88801c2fe148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x12a2/0x1b70 kernel/workqueue.c:3213 #1: ffffc9000db27d10 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x929/0x1b70 kernel/workqueue.c:3214 #2: ffffffff90137c90 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xad/0x890 net/core/net_namespace.c:662 #3: ffff88807681c0e8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:884 [inline] #3: ffff88807681c0e8 (&dev->mutex){....}-{4:4}, at: devl_dev_lock net/devlink/devl_internal.h:108 [inline] #3: ffff88807681c0e8 (&dev->mutex){....}-{4:4}, at: devlink_pernet_pre_exit+0x12c/0x2b0 net/devlink/core.c:506 #4: ffff88823bfd8250 (&devlink->lock_key#5){+.+.}-{4:4}, at: devl_lock net/devlink/core.c:276 [inline] #4: ffff88823bfd8250 (&devlink->lock_key#5){+.+.}-{4:4}, at: devl_dev_lock net/devlink/devl_internal.h:109 [inline] #4: ffff88823bfd8250 (&devlink->lock_key#5){+.+.}-{4:4}, at: devlink_pernet_pre_exit+0x136/0x2b0 net/devlink/core.c:506 #5: ffff88805b5d24f0 (&sb->s_type->i_mutex_key#3){++++}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline] #5: ffff88805b5d24f0 (&sb->s_type->i_mutex_key#3){++++}-{4:4}, at: simple_recursive_removal+0x2c5/0x690 fs/libfs.c:628 5 locks held by syz-executor/9617: #0: ffff888035c12428 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0x12a/0x250 fs/read_write.c:738 #1: ffff88805d3e3888 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x28f/0x510 fs/kernfs/file.c:325 #2: ffff88814438be18 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2b2/0x510 fs/kernfs/file.c:326 #3: ffffffff8f6eab08 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd1/0x4a0 drivers/net/netdevsim/bus.c:216 #4: ffff88807681c0e8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:884 [inline] #4: ffff88807681c0e8 (&dev->mutex){....}-{4:4}, at: device_del+0xa0/0x9f0 drivers/base/core.c:3843 2 locks held by syz.0.3491/9641: #0: ffff8881412ca428 (sb_writers#8){.+.+}-{0:0}, at: ksys_write+0x12a/0x250 fs/read_write.c:738 #1: ffff88823bfd8250 (&devlink->lock_key#5){+.+.}-{4:4}, at: devlink_health_report+0x3ba/0x9c0 net/devlink/health.c:627 2 locks held by syz.1.3513/9666: #0: ffff8881412ca428 (sb_writers#8){.+.+}-{0:0}, at: open_last_lookups fs/namei.c:3796 [inline] #0: ffff8881412ca428 (sb_writers#8){.+.+}-{0:0}, at: path_openat+0x1ec8/0x2cb0 fs/namei.c:4043 #1: ffff88805b5d24f0 (&sb->s_type->i_mutex_key#3){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:882 [inline] #1: ffff88805b5d24f0 (&sb->s_type->i_mutex_key#3){++++}-{4:4}, at: open_last_lookups fs/namei.c:3806 [inline] #1: ffff88805b5d24f0 (&sb->s_type->i_mutex_key#3){++++}-{4:4}, at: path_openat+0x818/0x2cb0 fs/namei.c:4043 2 locks held by syz.3.3514/9667: #0: ffff8881412ca428 (sb_writers#8){.+.+}-{0:0}, at: open_last_lookups fs/namei.c:3796 [inline] #0: ffff8881412ca428 (sb_writers#8){.+.+}-{0:0}, at: path_openat+0x1ec8/0x2cb0 fs/namei.c:4043 #1: ffff88805b5d24f0 (&sb->s_type->i_mutex_key#3){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:882 [inline] #1: ffff88805b5d24f0 (&sb->s_type->i_mutex_key#3){++++}-{4:4}, at: open_last_lookups fs/namei.c:3806 [inline] #1: ffff88805b5d24f0 (&sb->s_type->i_mutex_key#3){++++}-{4:4}, at: path_openat+0x818/0x2cb0 fs/namei.c:4043 4 locks held by syz-executor/9677: #0: ffff888035c12428 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0x12a/0x250 fs/read_write.c:738 #1: ffff88814cd58488 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x28f/0x510 fs/kernfs/file.c:325 #2: ffff88814438be18 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2b2/0x510 fs/kernfs/file.c:326 #3: ffffffff8f6eab08 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd1/0x4a0 drivers/net/netdevsim/bus.c:216 4 locks held by syz-executor/9681: #0: ffff888035c12428 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0x12a/0x250 fs/read_write.c:738 #1: ffff888034aec488 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x28f/0x510 fs/kernfs/file.c:325 #2: ffff88814438be18 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2b2/0x510 fs/kernfs/file.c:326 #3: ffffffff8f6eab08 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd1/0x4a0 drivers/net/netdevsim/bus.c:216 4 locks held by syz-executor/9682: #0: ffff888035c12428 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0x12a/0x250 fs/read_write.c:738 #1: ffff888144784c88 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x28f/0x510 fs/kernfs/file.c:325 #2: ffff88814438be18 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2b2/0x510 fs/kernfs/file.c:326 #3: ffffffff8f6eab08 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd1/0x4a0 drivers/net/netdevsim/bus.c:216 4 locks held by syz-executor/9707: #0: ffff888035c12428 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0x12a/0x250 fs/read_write.c:738 #1: ffff88805ba12088 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x28f/0x510 fs/kernfs/file.c:325 #2: ffff88814438be18 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2b2/0x510 fs/kernfs/file.c:326 #3: ffffffff8f6eab08 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd1/0x4a0 drivers/net/netdevsim/bus.c:216 4 locks held by syz-executor/9726: #0: ffff888035c12428 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0x12a/0x250 fs/read_write.c:738 #1: ffff88805d6cdc88 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x28f/0x510 fs/kernfs/file.c:325 #2: ffff88814438be18 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2b2/0x510 fs/kernfs/file.c:326 #3: ffffffff8f6eab08 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd1/0x4a0 drivers/net/netdevsim/bus.c:216 4 locks held by syz-executor/9728: #0: ffff888035c12428 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0x12a/0x250 fs/read_write.c:738 #1: ffff88805e194488 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x28f/0x510 fs/kernfs/file.c:325 #2: ffff88814438be18 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2b2/0x510 fs/kernfs/file.c:326 #3: ffffffff8f6eab08 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd1/0x4a0 drivers/net/netdevsim/bus.c:216 4 locks held by syz-executor/9731: #0: ffff888035c12428 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0x12a/0x250 fs/read_write.c:738 #1: ffff888032286488 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x28f/0x510 fs/kernfs/file.c:325 #2: ffff88814438be18 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2b2/0x510 fs/kernfs/file.c:326 #3: ffffffff8f6eab08 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd1/0x4a0 drivers/net/netdevsim/bus.c:216 4 locks held by syz-executor/9757: #0: ffff888035c12428 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0x12a/0x250 fs/read_write.c:738 #1: ffff888033269488 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x28f/0x510 fs/kernfs/file.c:325 #2: ffff88814438be18 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2b2/0x510 fs/kernfs/file.c:326 #3: ffffffff8f6eab08 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd1/0x4a0 drivers/net/netdevsim/bus.c:216 4 locks held by syz-executor/9776: #0: ffff888035c12428 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0x12a/0x250 fs/read_write.c:738 #1: ffff888033f54088 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x28f/0x510 fs/kernfs/file.c:325 #2: ffff88814438be18 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2b2/0x510 fs/kernfs/file.c:326 #3: ffffffff8f6eab08 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd1/0x4a0 drivers/net/netdevsim/bus.c:216 4 locks held by syz-executor/9779: #0: ffff888035c12428 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0x12a/0x250 fs/read_write.c:738 #1: ffff888034694888 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x28f/0x510 fs/kernfs/file.c:325 #2: ffff88814438be18 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2b2/0x510 fs/kernfs/file.c:326 #3: ffffffff8f6eab08 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd1/0x4a0 drivers/net/netdevsim/bus.c:216 4 locks held by syz-executor/9780: #0: ffff888035c12428 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0x12a/0x250 fs/read_write.c:738 #1: ffff88803200b088 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x28f/0x510 fs/kernfs/file.c:325 #2: ffff88814438be18 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2b2/0x510 fs/kernfs/file.c:326 #3: ffffffff8f6eab08 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd1/0x4a0 drivers/net/netdevsim/bus.c:216 ============================================= NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc1-syzkaller-00101-g27605c8c0f69 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:307 [inline] watchdog+0xf70/0x12c0 kernel/hung_task.c:470 kthread+0x3c2/0x780 kernel/kthread.c:464 ret_from_fork+0x5d4/0x6f0 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 12 Comm: kworker/u8:0 Not tainted 6.16.0-rc1-syzkaller-00101-g27605c8c0f69 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:mark_lock+0x7a/0x610 kernel/locking/lockdep.c:4735 Code: ff 1f 0f b7 c0 48 0f a3 05 e3 fb 1a 14 0f 83 86 00 00 00 48 8d 04 80 48 8d 04 80 48 8d 04 c5 60 c9 b2 95 4c 89 ea 48 23 50 60 01 00 00 00 74 7f 48 8b 54 24 68 65 48 2b 15 5a 16 14 12 0f 85 RSP: 0018:ffffc90000117990 EFLAGS: 00000002 RAX: ffffffff95b35f60 RBX: 0000000000000002 RCX: 0000000000000002 RDX: 0000000000000004 RSI: ffff88801e29e540 RDI: ffff88801e29da00 RBP: ffffc90000117a28 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000050 R11: 0000000000000001 R12: ffff88801e29e540 R13: 0000000000000004 R14: 0000000000000003 R15: ffff88801e29da00 FS: 0000000000000000(0000) GS:ffff888124962000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000563fb964e838 CR3: 000000000e182000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: mark_usage kernel/locking/lockdep.c:4665 [inline] __lock_acquire+0x3b7/0x1c90 kernel/locking/lockdep.c:5194 lock_acquire kernel/locking/lockdep.c:5871 [inline] lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5828 sched_submit_work kernel/sched/core.c:6819 [inline] schedule+0x21c/0x3a0 kernel/sched/core.c:6877 toggle_allocation_gate mm/kfence/core.c:852 [inline] toggle_allocation_gate+0x1d9/0x280 mm/kfence/core.c:842 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3321 [inline] worker_thread+0x6c8/0xf10 kernel/workqueue.c:3402 kthread+0x3c2/0x780 kernel/kthread.c:464 ret_from_fork+0x5d4/0x6f0 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245