Extracting prog: 35m22.07655429s Minimizing prog: 35m17.284657017s Simplifying prog options: 0s Extracting C: 3m13.717154625s Simplifying C: 25m48.540228302s extracting reproducer from 51 programs testing a last program of every proc single: executing 11 programs separately with timeout 6m0s testing program (duration=6m0s, {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}}): ioctl$sock_inet_SIOCSARP-socket$nl_netfilter-sendmsg$NFT_BATCH-sendmsg$IPSET_CMD_LIST detailed listing: executing program 0: ioctl$sock_inet_SIOCSARP(0xffffffffffffffff, 0x8955, 0x0) r0 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$NFT_BATCH(r0, 0x0, 0x0) sendmsg$IPSET_CMD_LIST(r0, &(0x7f0000000440)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x2}, 0xc, &(0x7f0000000400)={&(0x7f0000000340)={0x34, 0x7, 0x6, 0x301, 0x0, 0x0, {0x0, 0x0, 0x5}, [@IPSET_ATTR_SETNAME={0x9, 0x2, 'syz0\x00'}, @IPSET_ATTR_PROTOCOL={0x5}, @IPSET_ATTR_SETNAME={0x9, 0x2, 'syz1\x00'}]}, 0x34}, 0x1, 0x0, 0x0, 0x200008d1}, 0xd0) program did not crash testing program (duration=6m0s, {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}}): prctl$PR_SCHED_CORE-syz_open_dev$sndmidi-dup-write$6lowpan_enable-syz_io_uring_setup-syz_io_uring_submit-io_uring_enter-socket$inet6_tcp-setsockopt$inet6_tcp_int-connect$inet6-setsockopt$inet6_tcp_TCP_ULP-setsockopt$inet6_tcp_TLS_TX-recvmmsg-socket$inet_udp-lseek-socket$nl_route-bpf$PROG_LOAD_XDP-socket$packet-ioctl$sock_SIOCGIFINDEX-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_LINK_CREATE_XDP-sendmsg$nl_route_sched-close-socket-sendmsg$IPVS_CMD_SET_INFO detailed listing: executing program 0: prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0) r0 = syz_open_dev$sndmidi(&(0x7f0000000040), 0x2, 0x161141) r1 = dup(r0) write$6lowpan_enable(r1, &(0x7f0000000000)='0', 0xfffffd2c) r2 = syz_io_uring_setup(0x239, &(0x7f0000000380)={0x0, 0xf691, 0x10100, 0x0, 0x356}, &(0x7f00000008c0)=0x0, &(0x7f00000001c0)=0x0) syz_io_uring_submit(r3, r4, &(0x7f0000000040)=@IORING_OP_POLL_ADD={0x6, 0x2, 0x0, @fd_index=0x4, 0x0, 0x0, 0x0, {}, 0x1}) io_uring_enter(r2, 0x70a, 0x41e3, 0x0, 0x0, 0x0) r5 = socket$inet6_tcp(0xa, 0x1, 0x0) setsockopt$inet6_tcp_int(r5, 0x6, 0x13, &(0x7f0000000040)=0x100000001, 0x76dc) connect$inet6(r5, &(0x7f0000000080), 0x1c) setsockopt$inet6_tcp_TCP_ULP(r5, 0x6, 0x1f, &(0x7f00000002c0), 0x4) setsockopt$inet6_tcp_TLS_TX(r5, 0x11a, 0x2, &(0x7f0000000b80)=@gcm_128={{0x303}, "cfc85eb51b0ace6a", "4617a9f6040839230fb7fead776dd8dc", "3f4051c4", "a44a889722b66244"}, 0x28) recvmmsg(r5, &(0x7f0000003d40)=[{{0x0, 0x0, &(0x7f0000000280)=[{&(0x7f0000000400)=""/247, 0xf7}], 0x1}, 0x3}], 0x1, 0x40010020, 0x0) socket$inet_udp(0x2, 0x2, 0x0) lseek(0xffffffffffffffff, 0x9, 0x0) r6 = socket$nl_route(0x10, 0x3, 0x0) r7 = bpf$PROG_LOAD_XDP(0x5, &(0x7f0000000300)={0x6, 0x3, &(0x7f0000000240)=@framed, 0x0}, 0x94) r8 = socket$packet(0x11, 0x3, 0x300) ioctl$sock_SIOCGIFINDEX(r8, 0x8933, 0x0) bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, 0x0, 0x0) r9 = bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f00000000c0)={r7, 0x0, 0x25, 0x0, @val=@iter={0x0}}, 0x40) sendmsg$nl_route_sched(r6, &(0x7f0000000200)={0x0, 0x0, 0x0, 0x1, 0xf0ffffffffffff}, 0x0) close(r9) r10 = socket(0x10, 0x803, 0x0) sendmsg$IPVS_CMD_SET_INFO(r10, &(0x7f0000000b00)={0x0, 0x0, &(0x7f0000000ac0)={0x0, 0x14}}, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io$hid-syz_usb_control_io$cdc_ncm-syz_usb_control_io$hid-syz_usb_control_io$cdc_ncm-gettid-syz_usb_control_io detailed listing: executing program 0: r0 = syz_usb_connect(0x0, 0x24, &(0x7f0000000000)=ANY=[@ANYBLOB="12010000d3e457201e040b40e73e000000010902120001000000000904"], 0x0) syz_usb_control_io$hid(r0, 0x0, 0x0) syz_usb_control_io$cdc_ncm(r0, 0x0, 0x0) syz_usb_control_io$hid(r0, &(0x7f0000000080)={0x24, &(0x7f00000000c0)=ANY=[], 0x0, 0x0, 0x0}, 0x0) syz_usb_control_io$cdc_ncm(r0, 0x0, 0x0) gettid() syz_usb_control_io(r0, 0x0, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_generic-syz_open_dev$loop-openat$iommufd-ioctl$IOMMU_IOAS_ALLOC-epoll_create1-fcntl$dupfd-socketpair$unix-connect$unix-sendmmsg$unix-recvmmsg-prctl$PR_SCHED_CORE-bpf$BPF_RAW_TRACEPOINT_OPEN-mlock-mremap-syz_open_dev$usbfs-munlockall-madvise-dup-openat$rfkill-write$rfkill-ioctl$IOMMU_TEST_OP_ADD_RESERVED-ioctl$IOMMU_IOAS_MAP$PAGES-syz_usb_connect$printer-syz_usb_control_io$printer-syz_open_dev$char_usb detailed listing: executing program 0: socket$nl_generic(0x10, 0x3, 0x10) syz_open_dev$loop(&(0x7f0000000040), 0x7, 0x20080) r0 = openat$iommufd(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0) ioctl$IOMMU_IOAS_ALLOC(r0, 0x3b81, &(0x7f00000000c0)={0xc, 0x0, 0x0}) r2 = epoll_create1(0x0) fcntl$dupfd(r2, 0x2, 0xffffffffffffffff) socketpair$unix(0x1, 0x3, 0x0, &(0x7f0000000080)={0xffffffffffffffff, 0xffffffffffffffff}) connect$unix(r3, &(0x7f000057eff8)=@abs, 0x6e) sendmmsg$unix(r4, &(0x7f00000bd000), 0x318, 0x0) recvmmsg(r3, &(0x7f00000000c0), 0x10106, 0x2, 0x0) prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x1, 0x0) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000140)={0x0}, 0x18) mlock(&(0x7f0000000000/0x800000)=nil, 0x800000) mremap(&(0x7f0000724000/0x4000)=nil, 0x4000, 0x4000, 0x3, &(0x7f0000290000/0x4000)=nil) syz_open_dev$usbfs(&(0x7f0000000100), 0x775, 0x8000) munlockall() madvise(&(0x7f0000000000/0x600000)=nil, 0x600002, 0x8) dup(r3) r5 = openat$rfkill(0xffffffffffffff9c, &(0x7f0000000040), 0x801, 0x0) write$rfkill(r5, &(0x7f0000000080)={0x0, 0x1, 0x3, 0x1}, 0x8) ioctl$IOMMU_TEST_OP_ADD_RESERVED(r0, 0x3ba0, &(0x7f00000003c0)={0x48, 0xc, r1, 0x0, 0x0, 0x200000000}) ioctl$IOMMU_IOAS_MAP$PAGES(r0, 0x3b85, &(0x7f0000000000)={0x28, 0x6, r1, 0x0, &(0x7f0000ffb000/0x4000)=nil, 0x4000}) r6 = syz_usb_connect$printer(0x0, 0x2d, &(0x7f0000000640)=ANY=[@ANYBLOB="12010000090000402505a8a440000102030109021b00010100000009040000020701010009050102"], 0x0) syz_usb_control_io$printer(r6, 0x0, &(0x7f0000000000)={0x34, 0x0, 0x0, 0x0, 0x0, 0x0, &(0x7f0000001180)={0x20, 0x0, 0x1}}) syz_open_dev$char_usb(0xc, 0xb4, 0x2000000) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-socketpair$unix-connect$unix-socket$kcm-sendmmsg$unix-recvmmsg-prctl$PR_SCHED_CORE-sched_setattr-syz_usb_connect-openat$full-syz_open_dev$dri-close_range-pipe2-syz_open_dev$vim2m-ioctl$vim2m_VIDIOC_S_CTRL-socket$nl_generic-ioctl$sock_SIOCGIFINDEX_80211-openat$rdma_cm-bpf$BPF_RAW_TRACEPOINT_OPEN-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-openat$fb0-socketpair$nbd-prlimit64-setsockopt$IP6T_SO_SET_REPLACE-write$binfmt_elf64-recvmmsg detailed listing: executing program 0: socket(0x40000000015, 0x5, 0x0) socketpair$unix(0x1, 0x3, 0x0, &(0x7f00000002c0)={0xffffffffffffffff, 0xffffffffffffffff}) connect$unix(r0, &(0x7f000057eff8)=@abs, 0x6e) socket$kcm(0x2a, 0x2, 0x0) sendmmsg$unix(r1, &(0x7f00000bd000), 0x318, 0x0) recvmmsg(r0, &(0x7f00000000c0), 0x10106, 0x2, 0x0) prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0) sched_setattr(0x0, &(0x7f0000000100)={0x38, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffffe}, 0x0) syz_usb_connect(0x0, 0x5f, &(0x7f0000000000)=ANY=[@ANYBLOB="12010000b1f203401e0903003bd7010203010902"], 0x0) openat$full(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0) syz_open_dev$dri(&(0x7f0000000100), 0x1f, 0x0) close_range(0xffffffffffffffff, 0xffffffffffffffff, 0x2) pipe2(&(0x7f0000000380), 0x4080) r2 = syz_open_dev$vim2m(&(0x7f0000000200), 0x2000000f5, 0x2) ioctl$vim2m_VIDIOC_S_CTRL(r2, 0xc008561c, &(0x7f0000000400)={0xa00965, 0x2}) r3 = socket$nl_generic(0x10, 0x3, 0x10) ioctl$sock_SIOCGIFINDEX_80211(r3, 0x8933, &(0x7f00000013c0)={'wlan1\x00'}) openat$rdma_cm(0xffffffffffffff9c, &(0x7f0000000540), 0x2, 0x0) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, 0x0, 0x0) seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x8, &(0x7f00000002c0)={0x0, &(0x7f0000000140)}) openat$fb0(0xffffffffffffff9c, &(0x7f0000000080), 0x2001, 0x0) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={0xffffffffffffffff, 0xffffffffffffffff}) prlimit64(0x0, 0x7, &(0x7f0000000000), 0x0) setsockopt$IP6T_SO_SET_REPLACE(0xffffffffffffffff, 0x29, 0x40, &(0x7f0000000540)=@raw={'raw\x00', 0x3c1, 0x3, 0x2a8, 0x3a0, 0x150, 0x150, 0x0, 0xf8010000, 0x468, 0x238, 0x238, 0x468, 0x238, 0x3, 0x0, {[{{@ipv6={@initdev={0xfe, 0x88, '\x00', 0x0, 0x0}, @ipv4={'\x00', '\xff\xff', @initdev={0xac, 0x1e, 0x0, 0x0}}, [], [], 'team_slave_0\x00', 'hsr0\x00', {}, {}, 0x84}, 0x0, 0xa8, 0x110}, @unspec=@CT2={0x68, 'CT\x00', 0x2, {0x0, 0x0, 0x0, 0x0, 'pptp\x00', 'syz0\x00'}}}, {{@ipv6={@empty, @mcast1, [], [], 'batadv_slave_0\x00', 'veth1\x00'}, 0x0, 0xa8, 0xc8}, @unspec=@NOTRACK={0x20}}], {{'\x00', 0x0, 0xa8, 0xd0}, {0x28}}}}, 0x308) write$binfmt_elf64(r5, &(0x7f0000000580)=ANY=[], 0x78) recvmmsg(r4, &(0x7f0000000500)=[{{0x0, 0x0, 0x0, 0x0, &(0x7f0000000080)=""/8, 0xc}}], 0x4b, 0x0, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): madvise-mremap-mlock-userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-ioctl$UFFDIO_WRITEPROTECT-mremap detailed listing: executing program 0: madvise(&(0x7f0000a93000/0x4000)=nil, 0x4000, 0xe) mremap(&(0x7f0000a96000/0x1000)=nil, 0x1000, 0x800000, 0x3, &(0x7f0000130000/0x800000)=nil) mlock(&(0x7f0000000000/0x800000)=nil, 0x800000) r0 = userfaultfd(0x801) ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f00000000c0)) ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000000)={{&(0x7f0000400000/0xc00000)=nil, 0xc00000}, 0x3}) ioctl$UFFDIO_WRITEPROTECT(r0, 0xc018aa06, &(0x7f0000000140)={{&(0x7f0000400000/0xc00000)=nil, 0xc00000}, 0x1}) mremap(&(0x7f0000000000/0x1000)=nil, 0x1000, 0x1000, 0x7, &(0x7f0000481000/0x1000)=nil) program crashed: INFO: task hung in userfaultfd_release_all single: successfully extracted reproducer found reproducer with 8 syscalls minimizing guilty program testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): madvise-mremap-mlock-userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-ioctl$UFFDIO_WRITEPROTECT detailed listing: executing program 0: madvise(&(0x7f0000a93000/0x4000)=nil, 0x4000, 0xe) mremap(&(0x7f0000a96000/0x1000)=nil, 0x1000, 0x800000, 0x3, &(0x7f0000130000/0x800000)=nil) mlock(&(0x7f0000000000/0x800000)=nil, 0x800000) r0 = userfaultfd(0x801) ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f00000000c0)) ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000000)={{&(0x7f0000400000/0xc00000)=nil, 0xc00000}, 0x3}) ioctl$UFFDIO_WRITEPROTECT(r0, 0xc018aa06, &(0x7f0000000140)={{&(0x7f0000400000/0xc00000)=nil, 0xc00000}, 0x1}) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): madvise-mremap-mlock-userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-mremap detailed listing: executing program 0: madvise(&(0x7f0000a93000/0x4000)=nil, 0x4000, 0xe) mremap(&(0x7f0000a96000/0x1000)=nil, 0x1000, 0x800000, 0x3, &(0x7f0000130000/0x800000)=nil) mlock(&(0x7f0000000000/0x800000)=nil, 0x800000) r0 = userfaultfd(0x801) ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f00000000c0)) ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000000)={{&(0x7f0000400000/0xc00000)=nil, 0xc00000}, 0x3}) mremap(&(0x7f0000000000/0x1000)=nil, 0x1000, 0x1000, 0x7, &(0x7f0000481000/0x1000)=nil) program crashed: INFO: task hung in userfaultfd_release_all testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): madvise-mremap-mlock-userfaultfd-ioctl$UFFDIO_API-mremap detailed listing: executing program 0: madvise(&(0x7f0000a93000/0x4000)=nil, 0x4000, 0xe) mremap(&(0x7f0000a96000/0x1000)=nil, 0x1000, 0x800000, 0x3, &(0x7f0000130000/0x800000)=nil) mlock(&(0x7f0000000000/0x800000)=nil, 0x800000) r0 = userfaultfd(0x801) ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f00000000c0)) mremap(&(0x7f0000000000/0x1000)=nil, 0x1000, 0x1000, 0x7, &(0x7f0000481000/0x1000)=nil) program crashed: INFO: task hung in userfaultfd_release_all testing program (duration=6m0s, {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}}): madvise-mremap-mlock-userfaultfd-mremap detailed listing: executing program 0: madvise(&(0x7f0000a93000/0x4000)=nil, 0x4000, 0xe) mremap(&(0x7f0000a96000/0x1000)=nil, 0x1000, 0x800000, 0x3, &(0x7f0000130000/0x800000)=nil) mlock(&(0x7f0000000000/0x800000)=nil, 0x800000) userfaultfd(0x801) mremap(&(0x7f0000000000/0x1000)=nil, 0x1000, 0x1000, 0x7, &(0x7f0000481000/0x1000)=nil) program crashed: INFO: task hung in userfaultfd_release_all testing program (duration=6m0s, {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}}): madvise-mremap-mlock-mremap detailed listing: executing program 0: madvise(&(0x7f0000a93000/0x4000)=nil, 0x4000, 0xe) mremap(&(0x7f0000a96000/0x1000)=nil, 0x1000, 0x800000, 0x3, &(0x7f0000130000/0x800000)=nil) mlock(&(0x7f0000000000/0x800000)=nil, 0x800000) mremap(&(0x7f0000000000/0x1000)=nil, 0x1000, 0x1000, 0x7, &(0x7f0000481000/0x1000)=nil) program crashed: INFO: task hung in exit_mm testing program (duration=6m0s, {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}}): madvise-mremap-mremap detailed listing: executing program 0: madvise(&(0x7f0000a93000/0x4000)=nil, 0x4000, 0xe) mremap(&(0x7f0000a96000/0x1000)=nil, 0x1000, 0x800000, 0x3, &(0x7f0000130000/0x800000)=nil) mremap(&(0x7f0000000000/0x1000)=nil, 0x1000, 0x1000, 0x7, &(0x7f0000481000/0x1000)=nil) program crashed: INFO: task hung in exit_mm testing program (duration=6m0s, {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}}): madvise-mremap detailed listing: executing program 0: madvise(&(0x7f0000a93000/0x4000)=nil, 0x4000, 0xe) mremap(&(0x7f0000000000/0x1000)=nil, 0x1000, 0x1000, 0x7, &(0x7f0000481000/0x1000)=nil) program crashed: lost connection to test machine suppressed program crash: lost connection to test machine testing program (duration=6m0s, {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}}): mremap-mremap detailed listing: executing program 0: mremap(&(0x7f0000a96000/0x1000)=nil, 0x1000, 0x800000, 0x3, &(0x7f0000130000/0x800000)=nil) mremap(&(0x7f0000000000/0x1000)=nil, 0x1000, 0x1000, 0x7, &(0x7f0000481000/0x1000)=nil) program crashed: INFO: task hung in exit_mm extracting C reproducer testing compiled C program (duration=6m0s, {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}}): mremap-mremap program crashed: INFO: task hung in exit_mm simplifying C reproducer testing compiled C program (duration=6m0s, {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}}): mremap-mremap program crashed: no output from test machine a never seen crash title: no output from test machine, ignore testing compiled C program (duration=6m0s, {Threaded:true 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}}): mremap-mremap program crashed: INFO: task hung in exit_mm testing compiled C program (duration=6m0s, {Threaded:true Repeat:true 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}}): mremap-mremap program crashed: INFO: task hung in exit_mm testing compiled C program (duration=6m0s, {Threaded:true Repeat:true 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:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mremap-mremap program crashed: INFO: task hung in exit_mm testing compiled C program (duration=6m0s, {Threaded:true Repeat:true 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:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mremap-mremap program crashed: INFO: task hung in exit_mm testing compiled C program (duration=6m0s, {Threaded:true Repeat:true 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:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mremap-mremap program crashed: INFO: task hung in exit_mm testing compiled C program (duration=6m0s, {Threaded:true Repeat:true 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:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mremap-mremap program crashed: INFO: task hung in exit_mm testing program (duration=6m0s, {Threaded:true Repeat:true 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:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mremap-mremap detailed listing: executing program 0: mremap(&(0x7f0000a96000/0x1000)=nil, 0x1000, 0x800000, 0x3, &(0x7f0000130000/0x800000)=nil) mremap(&(0x7f0000000000/0x1000)=nil, 0x1000, 0x1000, 0x7, &(0x7f0000481000/0x1000)=nil) program crashed: INFO: task hung in exit_mm validation run: crashed=true testing program (duration=6m0s, {Threaded:true Repeat:true 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:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mremap-mremap detailed listing: executing program 0: mremap(&(0x7f0000a96000/0x1000)=nil, 0x1000, 0x800000, 0x3, &(0x7f0000130000/0x800000)=nil) mremap(&(0x7f0000000000/0x1000)=nil, 0x1000, 0x1000, 0x7, &(0x7f0000481000/0x1000)=nil) program crashed: lost connection to test machine suppressed program crash: lost connection to test machine validation run: crashed=false testing program (duration=6m0s, {Threaded:true Repeat:true 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:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mremap-mremap detailed listing: executing program 0: mremap(&(0x7f0000a96000/0x1000)=nil, 0x1000, 0x800000, 0x3, &(0x7f0000130000/0x800000)=nil) mremap(&(0x7f0000000000/0x1000)=nil, 0x1000, 0x1000, 0x7, &(0x7f0000481000/0x1000)=nil) program crashed: INFO: task hung in exit_mm validation run: crashed=true testing program (duration=6m0s, {Threaded:true Repeat:true 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:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mremap-mremap detailed listing: executing program 0: mremap(&(0x7f0000a96000/0x1000)=nil, 0x1000, 0x800000, 0x3, &(0x7f0000130000/0x800000)=nil) mremap(&(0x7f0000000000/0x1000)=nil, 0x1000, 0x1000, 0x7, &(0x7f0000481000/0x1000)=nil) program crashed: INFO: task hung in exit_mm validation run: crashed=true reproducing took 1h54m0.84329614s repro crashed as (corrupted=false): INFO: task syz.0.16:6068 blocked for more than 143 seconds. Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 Blocked by coredump. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.16 state:D stack:26920 pid:6068 tgid:6068 ppid:5976 task_flags:0x40004c flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5351 [inline] __schedule+0x1737/0x4d30 kernel/sched/core.c:6954 __schedule_loop kernel/sched/core.c:7036 [inline] schedule+0x165/0x360 kernel/sched/core.c:7051 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7108 rwsem_down_read_slowpath+0x5fd/0x8f0 kernel/locking/rwsem.c:1088 __down_read_common kernel/locking/rwsem.c:1263 [inline] __down_read kernel/locking/rwsem.c:1276 [inline] down_read+0x98/0x2e0 kernel/locking/rwsem.c:1541 mmap_read_lock include/linux/mmap_lock.h:412 [inline] exit_mm+0xcc/0x2c0 kernel/exit.c:557 do_exit+0x648/0x2300 kernel/exit.c:947 do_group_exit+0x21c/0x2d0 kernel/exit.c:1100 __do_sys_exit_group kernel/exit.c:1111 [inline] __se_sys_exit_group kernel/exit.c:1109 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1109 x64_sys_call+0x21f7/0x2200 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f0b3058e9a9 RSP: 002b:00007ffe2f3e1568 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0b3058e9a9 RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000003 R08: 000000022f3e165f R09: 00007f0b30780260 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f0b30780260 R14: 0000000000000003 R15: 00007ffe2f3e1620 Showing all locks held in the system: 1 lock held by khungtaskd/31: #0: ffffffff8e13d8a0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #0: ffffffff8e13d8a0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline] #0: ffffffff8e13d8a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6770 2 locks held by getty/5611: #0: ffff88814c2710a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 drivers/tty/n_tty.c:2222 1 lock held by syz.0.16/6068: #0: ffff88807a0862a0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:412 [inline] #0: ffff88807a0862a0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm+0xcc/0x2c0 kernel/exit.c:557 1 lock held by syz.0.16/6069: 1 lock held by syz.1.17/6158: #0: ffff88807e58cd20 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:412 [inline] #0: ffff88807e58cd20 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm+0xcc/0x2c0 kernel/exit.c:557 1 lock held by syz.1.17/6159: 1 lock held by syz.2.18/6181: #0: ffff8880292301e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:412 [inline] #0: ffff8880292301e0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm+0xcc/0x2c0 kernel/exit.c:557 1 lock held by syz.2.18/6182: 1 lock held by syz.3.19/6211: #0: ffff88807ed157e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:412 [inline] #0: ffff88807ed157e0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm+0xcc/0x2c0 kernel/exit.c:557 1 lock held by syz.3.19/6212: 1 lock held by syz.4.20/6240: #0: ffff88801a474260 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:412 [inline] #0: ffff88801a474260 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm+0xcc/0x2c0 kernel/exit.c:557 1 lock held by syz.4.20/6241: 1 lock held by syz.5.21/6269: #0: ffff88802afd2ce0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:412 [inline] #0: ffff88802afd2ce0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm+0xcc/0x2c0 kernel/exit.c:557 1 lock held by syz.5.21/6270: 1 lock held by syz.6.22/6306: #0: ffff88807e588ca0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:412 [inline] #0: ffff88807e588ca0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm+0xcc/0x2c0 kernel/exit.c:557 1 lock held by syz.6.22/6307: 1 lock held by syz.7.23/6336: #0: ffff88807b8c0ca0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:412 [inline] #0: ffff88807b8c0ca0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm+0xcc/0x2c0 kernel/exit.c:557 1 lock held by syz.7.23/6337: ============================================= NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 nmi_cpu_backtrace+0x39e/0x3d0 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:328 [inline] watchdog+0xf93/0xfe0 kernel/hung_task.c:491 kthread+0x70e/0x8a0 kernel/kthread.c:463 ret_from_fork+0x3f9/0x770 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: 79 Comm: kworker/u8:5 Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: bat_events batadv_nc_worker RIP: 0010:__lock_acquire+0x818/0xd20 kernel/locking/lockdep.c:-1 Code: 8e 48 89 de e8 49 fd 60 03 eb c2 44 89 e0 25 ff 1f 00 00 41 c1 ec 03 41 81 e4 00 60 00 00 41 09 c4 4c 89 f9 48 c1 e9 20 89 ca c2 04 41 29 cc 44 31 e2 44 01 f9 41 29 d7 89 d6 c1 c6 06 44 31 RSP: 0018:ffffc9000219f880 EFLAGS: 00000806 RAX: 0000000000000007 RBX: 0000000000000002 RCX: 00000000929a5071 RDX: 00000000929a5071 RSI: ffff88801cf06540 RDI: ffff88801cf05a00 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8b46212a R10: dffffc0000000000 R11: fffffbfff1f454e7 R12: 0000000000004007 R13: ffff88801cf064f0 R14: ffff88801cf06540 R15: 929a50710f318362 FS: 0000000000000000(0000) GS:ffff888125be3000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055557c2b15c8 CR3: 000000000df38000 CR4: 00000000003526f0 Call Trace: lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5871 rcu_lock_acquire include/linux/rcupdate.h:331 [inline] rcu_read_lock include/linux/rcupdate.h:841 [inline] batadv_nc_process_nc_paths+0xdb/0x3a0 net/batman-adv/network-coding.c:687 batadv_nc_worker+0x429/0x610 net/batman-adv/network-coding.c:728 process_one_work kernel/workqueue.c:3236 [inline] process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3319 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400 kthread+0x70e/0x8a0 kernel/kthread.c:463 ret_from_fork+0x3f9/0x770 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 syz.0.16:6068 blocked for more than 143 seconds. Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 Blocked by coredump. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.16 state:D stack:26920 pid:6068 tgid:6068 ppid:5976 task_flags:0x40004c flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5351 [inline] __schedule+0x1737/0x4d30 kernel/sched/core.c:6954 __schedule_loop kernel/sched/core.c:7036 [inline] schedule+0x165/0x360 kernel/sched/core.c:7051 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7108 rwsem_down_read_slowpath+0x5fd/0x8f0 kernel/locking/rwsem.c:1088 __down_read_common kernel/locking/rwsem.c:1263 [inline] __down_read kernel/locking/rwsem.c:1276 [inline] down_read+0x98/0x2e0 kernel/locking/rwsem.c:1541 mmap_read_lock include/linux/mmap_lock.h:412 [inline] exit_mm+0xcc/0x2c0 kernel/exit.c:557 do_exit+0x648/0x2300 kernel/exit.c:947 do_group_exit+0x21c/0x2d0 kernel/exit.c:1100 __do_sys_exit_group kernel/exit.c:1111 [inline] __se_sys_exit_group kernel/exit.c:1109 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1109 x64_sys_call+0x21f7/0x2200 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f0b3058e9a9 RSP: 002b:00007ffe2f3e1568 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0b3058e9a9 RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000003 R08: 000000022f3e165f R09: 00007f0b30780260 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f0b30780260 R14: 0000000000000003 R15: 00007ffe2f3e1620 Showing all locks held in the system: 1 lock held by khungtaskd/31: #0: ffffffff8e13d8a0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #0: ffffffff8e13d8a0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline] #0: ffffffff8e13d8a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6770 2 locks held by getty/5611: #0: ffff88814c2710a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 drivers/tty/n_tty.c:2222 1 lock held by syz.0.16/6068: #0: ffff88807a0862a0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:412 [inline] #0: ffff88807a0862a0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm+0xcc/0x2c0 kernel/exit.c:557 1 lock held by syz.0.16/6069: 1 lock held by syz.1.17/6158: #0: ffff88807e58cd20 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:412 [inline] #0: ffff88807e58cd20 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm+0xcc/0x2c0 kernel/exit.c:557 1 lock held by syz.1.17/6159: 1 lock held by syz.2.18/6181: #0: ffff8880292301e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:412 [inline] #0: ffff8880292301e0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm+0xcc/0x2c0 kernel/exit.c:557 1 lock held by syz.2.18/6182: 1 lock held by syz.3.19/6211: #0: ffff88807ed157e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:412 [inline] #0: ffff88807ed157e0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm+0xcc/0x2c0 kernel/exit.c:557 1 lock held by syz.3.19/6212: 1 lock held by syz.4.20/6240: #0: ffff88801a474260 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:412 [inline] #0: ffff88801a474260 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm+0xcc/0x2c0 kernel/exit.c:557 1 lock held by syz.4.20/6241: 1 lock held by syz.5.21/6269: #0: ffff88802afd2ce0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:412 [inline] #0: ffff88802afd2ce0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm+0xcc/0x2c0 kernel/exit.c:557 1 lock held by syz.5.21/6270: 1 lock held by syz.6.22/6306: #0: ffff88807e588ca0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:412 [inline] #0: ffff88807e588ca0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm+0xcc/0x2c0 kernel/exit.c:557 1 lock held by syz.6.22/6307: 1 lock held by syz.7.23/6336: #0: ffff88807b8c0ca0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:412 [inline] #0: ffff88807b8c0ca0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm+0xcc/0x2c0 kernel/exit.c:557 1 lock held by syz.7.23/6337: ============================================= NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 nmi_cpu_backtrace+0x39e/0x3d0 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:328 [inline] watchdog+0xf93/0xfe0 kernel/hung_task.c:491 kthread+0x70e/0x8a0 kernel/kthread.c:463 ret_from_fork+0x3f9/0x770 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: 79 Comm: kworker/u8:5 Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: bat_events batadv_nc_worker RIP: 0010:__lock_acquire+0x818/0xd20 kernel/locking/lockdep.c:-1 Code: 8e 48 89 de e8 49 fd 60 03 eb c2 44 89 e0 25 ff 1f 00 00 41 c1 ec 03 41 81 e4 00 60 00 00 41 09 c4 4c 89 f9 48 c1 e9 20 89 ca c2 04 41 29 cc 44 31 e2 44 01 f9 41 29 d7 89 d6 c1 c6 06 44 31 RSP: 0018:ffffc9000219f880 EFLAGS: 00000806 RAX: 0000000000000007 RBX: 0000000000000002 RCX: 00000000929a5071 RDX: 00000000929a5071 RSI: ffff88801cf06540 RDI: ffff88801cf05a00 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8b46212a R10: dffffc0000000000 R11: fffffbfff1f454e7 R12: 0000000000004007 R13: ffff88801cf064f0 R14: ffff88801cf06540 R15: 929a50710f318362 FS: 0000000000000000(0000) GS:ffff888125be3000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055557c2b15c8 CR3: 000000000df38000 CR4: 00000000003526f0 Call Trace: lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5871 rcu_lock_acquire include/linux/rcupdate.h:331 [inline] rcu_read_lock include/linux/rcupdate.h:841 [inline] batadv_nc_process_nc_paths+0xdb/0x3a0 net/batman-adv/network-coding.c:687 batadv_nc_worker+0x429/0x610 net/batman-adv/network-coding.c:728 process_one_work kernel/workqueue.c:3236 [inline] process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3319 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400 kthread+0x70e/0x8a0 kernel/kthread.c:463 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245