Extracting prog: 4m7.014812129s Minimizing prog: 1m6.261699215s Simplifying prog options: 0s Extracting C: 1m25.801886827s Simplifying C: 18m20.64746847s extracting reproducer from 27 programs testing a last program of every proc single: executing 6 programs separately with timeout 30s testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): socket$inet6_sctp-bpf$PROG_LOAD-prlimit64-sched_setscheduler-getpid-sched_setscheduler-socketpair$unix-connect$unix-sendmmsg$unix-recvmmsg-sched_setscheduler-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-mkdir-mount$tmpfs-chdir-openat$cgroup_ro-openat$cgroup_ro-openat$cgroup_ro-mkdirat-mkdirat-mkdir-mount$overlay-chdir-creat-open_by_handle_at-write$cgroup_int-ioctl$FS_IOC_RESVSP-setsockopt$inet_sctp6_SCTP_EVENTS detailed listing: executing program 0: r0 = socket$inet6_sctp(0xa, 0x1, 0x84) bpf$PROG_LOAD(0x5, &(0x7f00000000c0)={0x11, 0x3, 0x0, &(0x7f0000000000)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @void, @value}, 0x94) prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x20000008b}, 0x0) sched_setscheduler(0x0, 0x1, &(0x7f0000000080)=0x7) r1 = getpid() sched_setscheduler(r1, 0x2, &(0x7f0000000200)=0x7) socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000200)={0xffffffffffffffff, 0xffffffffffffffff}) connect$unix(r2, &(0x7f0000000180)=@abs, 0x6e) sendmmsg$unix(r3, &(0x7f00000bd000), 0x318, 0x0) recvmmsg(r2, &(0x7f00000000c0), 0x10106, 0x2, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000200)=0x4) bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x11, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x10, 0x10, @void, @value}, 0x94) seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, &(0x7f0000000040)={0x0, 0x0}) mkdir(&(0x7f0000000280)='./file0\x00', 0x0) mount$tmpfs(0x0, &(0x7f0000000080)='./file0\x00', &(0x7f0000000400), 0x0, &(0x7f0000000180)=ANY=[@ANYBLOB='huge=always,mpol=interleave']) chdir(&(0x7f0000000140)='./file0\x00') openat$cgroup_ro(0xffffffffffffff9c, &(0x7f00000000c0)='memory.events\x00', 0x26e1, 0x0) r4 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000340)='memory.events\x00', 0x7a05, 0x1700) r5 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000140)='memory.events\x00', 0x7a05, 0x1700) mkdirat(0xffffffffffffff9c, &(0x7f0000000340)='./file1\x00', 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./file0\x00', 0x0) mkdir(&(0x7f0000000300)='./bus\x00', 0x0) mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x0, &(0x7f0000000380)={[{@upperdir={'upperdir', 0x3d, './file1'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@workdir={'workdir', 0x3d, './bus'}}]}) chdir(&(0x7f00000000c0)='./bus\x00') r6 = creat(&(0x7f0000000440)='./bus\x00', 0x0) open_by_handle_at(r6, &(0x7f0000000480)=ANY=[@ANYBLOB="17000000fb"], 0x0) write$cgroup_int(r5, &(0x7f0000000200), 0xf000) ioctl$FS_IOC_RESVSP(r4, 0x40305829, &(0x7f0000000080)={0x0, 0x0, 0x0, 0xeffe}) setsockopt$inet_sctp6_SCTP_EVENTS(r0, 0x84, 0xb, &(0x7f0000000040)={0x0, 0x1, 0x0, 0xf2, 0x0, 0xff, 0x1, 0x2, 0xfe, 0x9, 0x0, 0x0, 0x80, 0x3}, 0xe) program did not crash testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): arch_prctl$ARCH_SET_GS-openat$nullb-syz_mount_image$btrfs-socket$nl_route-socketpair$tipc-ioctl$sock_SIOCGIFINDEX-syz_mount_image$ext4-syz_mount_image$ext4-unlinkat-prlimit64-sched_setscheduler-getpid-sched_setscheduler-mmap-socketpair$unix-connect$unix-sendmmsg$unix-recvmmsg-socket$inet6_mptcp-getsockopt$inet6_mptcp_buf-prctl$PR_TASK_PERF_EVENTS_ENABLE-socket$can_raw-setsockopt$CAN_RAW_ERR_FILTER-bind$can_raw-ioctl$ifreq_SIOCGIFINDEX_vcan-bind$can_raw-mknod$loop-sendmsg$nl_route-openat$cgroup_ro detailed listing: executing program 0: arch_prctl$ARCH_SET_GS(0x1001, &(0x7f0000000080)) openat$nullb(0xffffffffffffff9c, &(0x7f0000000040), 0x4000, 0x0) syz_mount_image$btrfs(&(0x7f00000055c0), &(0x7f0000005600)='./file0\x00', 0x0, &(0x7f0000000040)={[{@compress_algo={'compress', 0x3d, 'zstd'}}]}, 0x1, 0x559a, 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r0 = socket$nl_route(0x10, 0x3, 0x0) socketpair$tipc(0x1e, 0x5, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000800)={'bridge0\x00', 0x0}) syz_mount_image$ext4(&(0x7f0000000080)='ext4\x00', &(0x7f0000000040)='./file0\x00', 0x2a00200, &(0x7f0000000000), 0x84, 0x47f, &(0x7f00000006c0)="$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") syz_mount_image$ext4(&(0x7f0000000140)='ext4\x00', &(0x7f0000000280)='./file0\x00', 0x804000, &(0x7f0000000200), 0x3, 0x4be, &(0x7f0000000ec0)="$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") unlinkat(0xffffffffffffff9c, &(0x7f0000000140)='./file1\x00', 0x0) prlimit64(0x0, 0xe, &(0x7f0000000280)={0x7, 0x8b}, 0x0) sched_setscheduler(0x0, 0x1, &(0x7f0000000080)=0x7) r3 = getpid() sched_setscheduler(r3, 0x2, &(0x7f0000000200)=0x6) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0) socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000200)={0xffffffffffffffff, 0xffffffffffffffff}) connect$unix(r4, &(0x7f000057eff8)=@abs, 0x6e) sendmmsg$unix(r5, &(0x7f0000000000), 0x651, 0x0) recvmmsg(r4, &(0x7f00000000c0), 0x10106, 0x2, 0x0) r6 = socket$inet6_mptcp(0xa, 0x1, 0x106) getsockopt$inet6_mptcp_buf(r6, 0x11c, 0x3, 0x0, &(0x7f0000002240)) prctl$PR_TASK_PERF_EVENTS_ENABLE(0x20) r7 = socket$can_raw(0x1d, 0x3, 0x1) setsockopt$CAN_RAW_ERR_FILTER(r7, 0x65, 0x2, &(0x7f0000000400)=0x2, 0x4) bind$can_raw(r7, &(0x7f0000000040), 0x10) ioctl$ifreq_SIOCGIFINDEX_vcan(r7, 0x8933, &(0x7f00000003c0)={'vcan0\x00', 0x0}) bind$can_raw(r7, &(0x7f0000000480)={0x1d, r8}, 0x10) mknod$loop(&(0x7f00000000c0)='./file0\x00', 0x80, 0x0) sendmsg$nl_route(r0, &(0x7f0000000200)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB="3000000070000100000000000000000007000000", @ANYRES32=r2, @ANYBLOB="0c00018008000100000001000c0001"], 0x30}, 0x1, 0x0, 0x0, 0x1}, 0x0) openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000000)='memory.swap.current\x00', 0x275a, 0x0) program did not crash testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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_mount_image$f2fs-openat-ioctl$F2FS_IOC_START_ATOMIC_WRITE-open-pwritev2 detailed listing: executing program 0: syz_mount_image$f2fs(&(0x7f0000000140), &(0x7f00000000c0)='./file1\x00', 0x101880a, &(0x7f0000005a80)=ANY=[@ANYBLOB="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"], 0x1, 0x550b, &(0x7f0000000540)="$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r0 = openat(0xffffffffffffff9c, &(0x7f0000000000)='./file1\x00', 0x1a37c1, 0x42) ioctl$F2FS_IOC_START_ATOMIC_WRITE(r0, 0xf501, 0x0) r1 = open(&(0x7f0000000080)='./file1\x00', 0x64842, 0x22) pwritev2(r1, &(0x7f0000000040)=[{&(0x7f0000000200)="b82e", 0x2}], 0x1, 0x7830, 0xffffffff, 0x0) program did not crash testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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_usb_connect detailed listing: executing program 0: syz_usb_connect(0x0, 0x24, &(0x7f0000000000)={{0x12, 0x1, 0x0, 0xee, 0x6f, 0xeb, 0x20, 0x424, 0xc001, 0xc355, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0xc9, 0x0, 0x0, 0xf1, 0xf7, 0x64}}]}}]}}, 0x0) program crashed: KASAN: use-after-free Read in hdm_disconnect single: successfully extracted reproducer found reproducer with 1 syscalls minimizing guilty program testing program (duration=48.300877851s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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_usb_connect detailed listing: executing program 0: syz_usb_connect(0x0, 0x0, 0x0, 0x0) program did not crash extracting C reproducer testing compiled C program (duration=48.300877851s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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_usb_connect program crashed: KASAN: use-after-free Read in hdm_disconnect simplifying C reproducer testing compiled C program (duration=48.300877851s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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_usb_connect program crashed: KASAN: use-after-free Read in hdm_disconnect testing compiled C program (duration=48.300877851s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false 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_usb_connect program crashed: KASAN: use-after-free Read in hdm_disconnect testing compiled C program (duration=48.300877851s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect program did not crash testing compiled C program (duration=48.300877851s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:false 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_usb_connect program crashed: KASAN: use-after-free Read in hdm_disconnect testing compiled C program (duration=48.300877851s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false 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_usb_connect program crashed: KASAN: use-after-free Read in hdm_disconnect testing compiled C program (duration=48.300877851s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false 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_usb_connect program crashed: KASAN: use-after-free Read in hdm_disconnect testing compiled C program (duration=48.300877851s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false 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_usb_connect program did not crash testing compiled C program (duration=48.300877851s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false 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_usb_connect program crashed: KASAN: use-after-free Read in hdm_disconnect testing compiled C program (duration=48.300877851s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect program did not crash testing compiled C program (duration=48.300877851s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect program crashed: KASAN: use-after-free Read in hdm_disconnect testing compiled C program (duration=48.300877851s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect program crashed: KASAN: use-after-free Read in hdm_disconnect testing compiled C program (duration=48.300877851s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect program crashed: KASAN: use-after-free Read in hdm_disconnect testing compiled C program (duration=48.300877851s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect program crashed: KASAN: use-after-free Read in hdm_disconnect testing compiled C program (duration=48.300877851s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:false Sysctl:false Swap:true UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect program crashed: KASAN: use-after-free Read in hdm_disconnect testing compiled C program (duration=48.300877851s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect program crashed: KASAN: use-after-free Read in hdm_disconnect reproducing took 24m59.72589368s repro crashed as (corrupted=false): usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 usb 1-1: Product: syz usb 1-1: Manufacturer: syz usb 1-1: SerialNumber: syz usb 1-1: config 0 descriptor?? usb 1-1: USB disconnect, device number 2 ================================================================== BUG: KASAN: use-after-free in hdm_disconnect+0x109/0x1c0 drivers/most/most_usb.c:1125 Read of size 8 at addr ffff8880256d9960 by task kworker/1:3/4164 CPU: 1 PID: 4164 Comm: kworker/1:3 Not tainted 5.15.175-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: usb_hub_wq hub_event Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106 print_address_description+0x63/0x3b0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0x16b/0x1c0 mm/kasan/report.c:451 hdm_disconnect+0x109/0x1c0 drivers/most/most_usb.c:1125 usb_unbind_interface+0x1cd/0x840 drivers/usb/core/driver.c:458 __device_release_driver drivers/base/dd.c:1229 [inline] device_release_driver_internal+0x50e/0x7f0 drivers/base/dd.c:1262 bus_remove_device+0x2e5/0x400 drivers/base/bus.c:531 device_del+0x6e2/0xbd0 drivers/base/core.c:3600 usb_disable_device+0x3b8/0x840 drivers/usb/core/message.c:1414 usb_disconnect+0x33c/0x8c0 drivers/usb/core/hub.c:2248 hub_port_connect drivers/usb/core/hub.c:5299 [inline] hub_port_connect_change drivers/usb/core/hub.c:5595 [inline] port_event drivers/usb/core/hub.c:5741 [inline] hub_event+0x1d58/0x54c0 drivers/usb/core/hub.c:5823 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310 worker_thread+0xaca/0x1280 kernel/workqueue.c:2457 kthread+0x3f6/0x4f0 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 Allocated by task 4164: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] ____kasan_kmalloc+0xba/0xf0 mm/kasan/common.c:513 kasan_kmalloc include/linux/kasan.h:264 [inline] kmem_cache_alloc_trace+0x143/0x290 mm/slub.c:3247 kmalloc include/linux/slab.h:591 [inline] kzalloc include/linux/slab.h:721 [inline] hdm_probe+0x91/0x13d0 drivers/most/most_usb.c:959 usb_probe_interface+0x5c0/0xaf0 drivers/usb/core/driver.c:396 really_probe+0x24e/0xb60 drivers/base/dd.c:595 __driver_probe_device+0x1a2/0x3d0 drivers/base/dd.c:755 driver_probe_device+0x50/0x420 drivers/base/dd.c:785 __device_attach_driver+0x2b9/0x500 drivers/base/dd.c:907 bus_for_each_drv+0x183/0x200 drivers/base/bus.c:429 __device_attach+0x359/0x570 drivers/base/dd.c:979 bus_probe_device+0xba/0x1e0 drivers/base/bus.c:489 device_add+0xb48/0xfd0 drivers/base/core.c:3412 usb_set_configuration+0x19dd/0x2020 drivers/usb/core/message.c:2165 usb_generic_driver_probe+0x84/0x140 drivers/usb/core/generic.c:238 usb_probe_device+0x130/0x260 drivers/usb/core/driver.c:293 really_probe+0x24e/0xb60 drivers/base/dd.c:595 __driver_probe_device+0x1a2/0x3d0 drivers/base/dd.c:755 driver_probe_device+0x50/0x420 drivers/base/dd.c:785 __device_attach_driver+0x2b9/0x500 drivers/base/dd.c:907 bus_for_each_drv+0x183/0x200 drivers/base/bus.c:429 __device_attach+0x359/0x570 drivers/base/dd.c:979 bus_probe_device+0xba/0x1e0 drivers/base/bus.c:489 device_add+0xb48/0xfd0 drivers/base/core.c:3412 usb_new_device+0xc17/0x18e0 drivers/usb/core/hub.c:2593 hub_port_connect drivers/usb/core/hub.c:5455 [inline] hub_port_connect_change drivers/usb/core/hub.c:5595 [inline] port_event drivers/usb/core/hub.c:5741 [inline] hub_event+0x2cdf/0x54c0 drivers/usb/core/hub.c:5823 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310 worker_thread+0xaca/0x1280 kernel/workqueue.c:2457 kthread+0x3f6/0x4f0 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 Freed by task 4164: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track+0x4b/0x80 mm/kasan/common.c:46 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360 ____kasan_slab_free+0xd8/0x120 mm/kasan/common.c:366 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:1705 [inline] slab_free_freelist_hook+0xdd/0x160 mm/slub.c:1731 slab_free mm/slub.c:3499 [inline] kfree+0xf1/0x270 mm/slub.c:4559 device_release+0x91/0x1c0 kobject_cleanup lib/kobject.c:713 [inline] kobject_release lib/kobject.c:744 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x224/0x460 lib/kobject.c:761 hdm_disconnect+0xef/0x1c0 drivers/most/most_usb.c:1123 usb_unbind_interface+0x1cd/0x840 drivers/usb/core/driver.c:458 __device_release_driver drivers/base/dd.c:1229 [inline] device_release_driver_internal+0x50e/0x7f0 drivers/base/dd.c:1262 bus_remove_device+0x2e5/0x400 drivers/base/bus.c:531 device_del+0x6e2/0xbd0 drivers/base/core.c:3600 usb_disable_device+0x3b8/0x840 drivers/usb/core/message.c:1414 usb_disconnect+0x33c/0x8c0 drivers/usb/core/hub.c:2248 hub_port_connect drivers/usb/core/hub.c:5299 [inline] hub_port_connect_change drivers/usb/core/hub.c:5595 [inline] port_event drivers/usb/core/hub.c:5741 [inline] hub_event+0x1d58/0x54c0 drivers/usb/core/hub.c:5823 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310 worker_thread+0xaca/0x1280 kernel/workqueue.c:2457 kthread+0x3f6/0x4f0 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 The buggy address belongs to the object at ffff8880256d8000 which belongs to the cache kmalloc-8k of size 8192 The buggy address is located 6496 bytes inside of 8192-byte region [ffff8880256d8000, ffff8880256da000) The buggy address belongs to the page: page:ffffea000095b600 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x256d8 head:ffffea000095b600 order:3 compound_mapcount:0 compound_pincount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 0000000000000000 0000000100000001 ffff888017442280 raw: 0000000000000000 0000000080020002 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, ts 11788827686, free_ts 0 prep_new_page mm/page_alloc.c:2426 [inline] get_page_from_freelist+0x3b78/0x3d40 mm/page_alloc.c:4192 __alloc_pages+0x272/0x700 mm/page_alloc.c:5465 alloc_page_interleave+0x22/0x1c0 mm/mempolicy.c:2031 alloc_slab_page mm/slub.c:1775 [inline] allocate_slab mm/slub.c:1912 [inline] new_slab+0xbb/0x4b0 mm/slub.c:1975 ___slab_alloc+0x6f6/0xe10 mm/slub.c:3008 __slab_alloc mm/slub.c:3095 [inline] slab_alloc_node mm/slub.c:3186 [inline] slab_alloc mm/slub.c:3228 [inline] __kmalloc+0x1c9/0x300 mm/slub.c:4403 kmalloc include/linux/slab.h:596 [inline] kzalloc include/linux/slab.h:721 [inline] __usb_create_hcd+0x5f/0x840 drivers/usb/core/hcd.c:2583 vhci_hcd_probe+0x1d8/0x3b0 drivers/usb/usbip/vhci_hcd.c:1371 platform_probe+0x131/0x1b0 drivers/base/platform.c:1391 really_probe+0x24e/0xb60 drivers/base/dd.c:595 __driver_probe_device+0x1a2/0x3d0 drivers/base/dd.c:755 driver_probe_device+0x50/0x420 drivers/base/dd.c:785 __device_attach_driver+0x2b9/0x500 drivers/base/dd.c:907 bus_for_each_drv+0x183/0x200 drivers/base/bus.c:429 __device_attach+0x359/0x570 drivers/base/dd.c:979 bus_probe_device+0xba/0x1e0 drivers/base/bus.c:489 page_owner free stack trace missing Memory state around the buggy address: ffff8880256d9800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8880256d9880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff8880256d9900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8880256d9980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8880256d9a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== final repro crashed as (corrupted=false): usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 usb 1-1: Product: syz usb 1-1: Manufacturer: syz usb 1-1: SerialNumber: syz usb 1-1: config 0 descriptor?? usb 1-1: USB disconnect, device number 2 ================================================================== BUG: KASAN: use-after-free in hdm_disconnect+0x109/0x1c0 drivers/most/most_usb.c:1125 Read of size 8 at addr ffff8880256d9960 by task kworker/1:3/4164 CPU: 1 PID: 4164 Comm: kworker/1:3 Not tainted 5.15.175-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: usb_hub_wq hub_event Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106 print_address_description+0x63/0x3b0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0x16b/0x1c0 mm/kasan/report.c:451 hdm_disconnect+0x109/0x1c0 drivers/most/most_usb.c:1125 usb_unbind_interface+0x1cd/0x840 drivers/usb/core/driver.c:458 __device_release_driver drivers/base/dd.c:1229 [inline] device_release_driver_internal+0x50e/0x7f0 drivers/base/dd.c:1262 bus_remove_device+0x2e5/0x400 drivers/base/bus.c:531 device_del+0x6e2/0xbd0 drivers/base/core.c:3600 usb_disable_device+0x3b8/0x840 drivers/usb/core/message.c:1414 usb_disconnect+0x33c/0x8c0 drivers/usb/core/hub.c:2248 hub_port_connect drivers/usb/core/hub.c:5299 [inline] hub_port_connect_change drivers/usb/core/hub.c:5595 [inline] port_event drivers/usb/core/hub.c:5741 [inline] hub_event+0x1d58/0x54c0 drivers/usb/core/hub.c:5823 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310 worker_thread+0xaca/0x1280 kernel/workqueue.c:2457 kthread+0x3f6/0x4f0 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 Allocated by task 4164: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] ____kasan_kmalloc+0xba/0xf0 mm/kasan/common.c:513 kasan_kmalloc include/linux/kasan.h:264 [inline] kmem_cache_alloc_trace+0x143/0x290 mm/slub.c:3247 kmalloc include/linux/slab.h:591 [inline] kzalloc include/linux/slab.h:721 [inline] hdm_probe+0x91/0x13d0 drivers/most/most_usb.c:959 usb_probe_interface+0x5c0/0xaf0 drivers/usb/core/driver.c:396 really_probe+0x24e/0xb60 drivers/base/dd.c:595 __driver_probe_device+0x1a2/0x3d0 drivers/base/dd.c:755 driver_probe_device+0x50/0x420 drivers/base/dd.c:785 __device_attach_driver+0x2b9/0x500 drivers/base/dd.c:907 bus_for_each_drv+0x183/0x200 drivers/base/bus.c:429 __device_attach+0x359/0x570 drivers/base/dd.c:979 bus_probe_device+0xba/0x1e0 drivers/base/bus.c:489 device_add+0xb48/0xfd0 drivers/base/core.c:3412 usb_set_configuration+0x19dd/0x2020 drivers/usb/core/message.c:2165 usb_generic_driver_probe+0x84/0x140 drivers/usb/core/generic.c:238 usb_probe_device+0x130/0x260 drivers/usb/core/driver.c:293 really_probe+0x24e/0xb60 drivers/base/dd.c:595 __driver_probe_device+0x1a2/0x3d0 drivers/base/dd.c:755 driver_probe_device+0x50/0x420 drivers/base/dd.c:785 __device_attach_driver+0x2b9/0x500 drivers/base/dd.c:907 bus_for_each_drv+0x183/0x200 drivers/base/bus.c:429 __device_attach+0x359/0x570 drivers/base/dd.c:979 bus_probe_device+0xba/0x1e0 drivers/base/bus.c:489 device_add+0xb48/0xfd0 drivers/base/core.c:3412 usb_new_device+0xc17/0x18e0 drivers/usb/core/hub.c:2593 hub_port_connect drivers/usb/core/hub.c:5455 [inline] hub_port_connect_change drivers/usb/core/hub.c:5595 [inline] port_event drivers/usb/core/hub.c:5741 [inline] hub_event+0x2cdf/0x54c0 drivers/usb/core/hub.c:5823 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310 worker_thread+0xaca/0x1280 kernel/workqueue.c:2457 kthread+0x3f6/0x4f0 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 Freed by task 4164: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track+0x4b/0x80 mm/kasan/common.c:46 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360 ____kasan_slab_free+0xd8/0x120 mm/kasan/common.c:366 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:1705 [inline] slab_free_freelist_hook+0xdd/0x160 mm/slub.c:1731 slab_free mm/slub.c:3499 [inline] kfree+0xf1/0x270 mm/slub.c:4559 device_release+0x91/0x1c0 kobject_cleanup lib/kobject.c:713 [inline] kobject_release lib/kobject.c:744 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x224/0x460 lib/kobject.c:761 hdm_disconnect+0xef/0x1c0 drivers/most/most_usb.c:1123 usb_unbind_interface+0x1cd/0x840 drivers/usb/core/driver.c:458 __device_release_driver drivers/base/dd.c:1229 [inline] device_release_driver_internal+0x50e/0x7f0 drivers/base/dd.c:1262 bus_remove_device+0x2e5/0x400 drivers/base/bus.c:531 device_del+0x6e2/0xbd0 drivers/base/core.c:3600 usb_disable_device+0x3b8/0x840 drivers/usb/core/message.c:1414 usb_disconnect+0x33c/0x8c0 drivers/usb/core/hub.c:2248 hub_port_connect drivers/usb/core/hub.c:5299 [inline] hub_port_connect_change drivers/usb/core/hub.c:5595 [inline] port_event drivers/usb/core/hub.c:5741 [inline] hub_event+0x1d58/0x54c0 drivers/usb/core/hub.c:5823 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310 worker_thread+0xaca/0x1280 kernel/workqueue.c:2457 kthread+0x3f6/0x4f0 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 The buggy address belongs to the object at ffff8880256d8000 which belongs to the cache kmalloc-8k of size 8192 The buggy address is located 6496 bytes inside of 8192-byte region [ffff8880256d8000, ffff8880256da000) The buggy address belongs to the page: page:ffffea000095b600 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x256d8 head:ffffea000095b600 order:3 compound_mapcount:0 compound_pincount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 0000000000000000 0000000100000001 ffff888017442280 raw: 0000000000000000 0000000080020002 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, ts 11788827686, free_ts 0 prep_new_page mm/page_alloc.c:2426 [inline] get_page_from_freelist+0x3b78/0x3d40 mm/page_alloc.c:4192 __alloc_pages+0x272/0x700 mm/page_alloc.c:5465 alloc_page_interleave+0x22/0x1c0 mm/mempolicy.c:2031 alloc_slab_page mm/slub.c:1775 [inline] allocate_slab mm/slub.c:1912 [inline] new_slab+0xbb/0x4b0 mm/slub.c:1975 ___slab_alloc+0x6f6/0xe10 mm/slub.c:3008 __slab_alloc mm/slub.c:3095 [inline] slab_alloc_node mm/slub.c:3186 [inline] slab_alloc mm/slub.c:3228 [inline] __kmalloc+0x1c9/0x300 mm/slub.c:4403 kmalloc include/linux/slab.h:596 [inline] kzalloc include/linux/slab.h:721 [inline] __usb_create_hcd+0x5f/0x840 drivers/usb/core/hcd.c:2583 vhci_hcd_probe+0x1d8/0x3b0 drivers/usb/usbip/vhci_hcd.c:1371 platform_probe+0x131/0x1b0 drivers/base/platform.c:1391 really_probe+0x24e/0xb60 drivers/base/dd.c:595 __driver_probe_device+0x1a2/0x3d0 drivers/base/dd.c:755 driver_probe_device+0x50/0x420 drivers/base/dd.c:785 __device_attach_driver+0x2b9/0x500 drivers/base/dd.c:907 bus_for_each_drv+0x183/0x200 drivers/base/bus.c:429 __device_attach+0x359/0x570 drivers/base/dd.c:979 bus_probe_device+0xba/0x1e0 drivers/base/bus.c:489 page_owner free stack trace missing Memory state around the buggy address: ffff8880256d9800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8880256d9880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff8880256d9900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8880256d9980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8880256d9a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================