./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor12540160 <...> DUID 00:04:06:88:74:a7:04:75:62:cb:55:93:34:09:94:90:e1:fe forked to background, child pid 3180 [ 23.055728][ T3181] 8021q: adding VLAN 0 to HW filter on device bond0 [ 23.064151][ T3181] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.125' (ECDSA) to the list of known hosts. execve("./syz-executor12540160", ["./syz-executor12540160"], 0x7fff38b6eb10 /* 10 vars */) = 0 brk(NULL) = 0x555556b8a000 brk(0x555556b8ac40) = 0x555556b8ac40 arch_prctl(ARCH_SET_FS, 0x555556b8a300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor12540160", 4096) = 26 brk(0x555556babc40) = 0x555556babc40 brk(0x555556bac000) = 0x555556bac000 mprotect(0x7f0ef663a000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 getpid() = 3608 mkdir("./syzkaller.gmYF0Z", 0700) = 0 chmod("./syzkaller.gmYF0Z", 0777) = 0 chdir("./syzkaller.gmYF0Z") = 0 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556b8a5d0) = 3609 ./strace-static-x86_64: Process 3609 attached [pid 3609] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 3609] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3609] setsid() = 1 [pid 3609] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 3609] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 3609] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 3609] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 3609] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 3609] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 3609] unshare(CLONE_NEWNS) = 0 [pid 3609] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 3609] unshare(CLONE_NEWIPC) = 0 [pid 3609] unshare(CLONE_NEWCGROUP) = 0 [pid 3609] unshare(CLONE_NEWUTS) = 0 [pid 3609] unshare(CLONE_SYSVSEM) = 0 [pid 3609] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3609] write(3, "16777216", 8) = 8 [pid 3609] close(3) = 0 [pid 3609] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 3609] write(3, "536870912", 9) = 9 [pid 3609] close(3) = 0 [pid 3609] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3609] write(3, "1024", 4) = 4 [pid 3609] close(3) = 0 [pid 3609] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3609] write(3, "8192", 4) = 4 [pid 3609] close(3) = 0 [pid 3609] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3609] write(3, "1024", 4) = 4 [pid 3609] close(3) = 0 [pid 3609] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 3609] write(3, "1024", 4) = 4 [pid 3609] close(3) = 0 [pid 3609] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 3609] write(3, "1024 1048576 500 1024", 21) = 21 [pid 3609] close(3) = 0 [pid 3609] getpid() = 1 [pid 3609] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b 48 c7 c7 e0 91 29 8a e8 43 d6 f0 ff 0f 0b 48 89 f2 4c 89 e1 [ 60.761207][ T122] RSP: 0018:ffffc90002cffc30 EFLAGS: 00010082 [ 60.767263][ T122] RAX: 0000000000000022 RBX: ffffc90002631110 RCX: 0000000000000000 [ 60.775219][ T122] RDX: ffff88801b573a80 RSI: ffffffff81621a58 RDI: fffff5200059ff78 [ 60.783178][ T122] RBP: ffff88807a51c1f0 R08: 0000000000000022 R09: 0000000000000000 [ 60.791131][ T122] R10: 0000000080000001 R11: 2e4c4c554e20696c R12: 0000000000000000 [ 60.799086][ T122] R13: ffff888074fe5000 R14: 1ffff9200059ff8f R15: ffffc90002631120 [ 60.807044][ T122] FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 [ 60.815959][ T122] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 60.822527][ T122] CR2: 00007f0ef6641290 CR3: 000000001cf6e000 CR4: 00000000003506e0 [ 60.830484][ T122] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 60.838508][ T122] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 60.846462][ T122] Call Trace: [ 60.849725][ T122] [ 60.852643][ T122] ? diUpdatePMap+0x41d/0xf90 [ 60.857313][ T122] diUpdatePMap+0x979/0xf90 [ 60.861807][ T122] ? diUpdatePMap+0x0/0xf90 [ 60.866300][ T122] ? rcu_read_lock_sched_held+0xd/0x70 [ 60.871752][ T122] ? lock_acquire+0x4fc/0x630 [ 60.876417][ T122] txUpdateMap+0x9c1/0xbe0 [ 60.880820][ T122] ? txUpdateMap+0x0/0xbe0 [ 60.885221][ T122] ? _raw_spin_lock_irqsave_nested-0xf/0x60 [ 60.891101][ T122] ? _raw_spin_unlock_irqrestore+0x50/0x70 [ 60.896895][ T122] jfs_lazycommit+0x5bb/0xaa0 [ 60.901559][ T122] ? jfs_lazycommit+0x0/0xaa0 [ 60.906222][ T122] ? default_wake_function+0x0/0x50 [ 60.911417][ T122] ? __kthread_parkme+0x15f/0x220 [ 60.916425][ T122] ? jfs_lazycommit+0x0/0xaa0 [ 60.921087][ T122] kthread+0x2e4/0x3a0 [ 60.925140][ T122] ? kthread+0x0/0x3a0 [ 60.929197][ T122] ret_from_fork+0x1f/0x30 [ 60.933607][ T122] [ 60.936608][ T122] Modules linked in: [ 60.940486][ T122] ---[ end trace 0000000000000000 ]--- [ 60.945924][ T122] RIP: 0010:__list_add_valid.cold+0x1d/0x58 [ 60.951806][ T122] Code: ff ff ff e8 2e 52 05 00 e9 e7 c0 ac fa 4c 89 e1 48 c7 c7 e0 92 29 8a e8 5f d6 f0 ff 0f 0b 48 c7 c7 80 92 29 8a e8 51 d6 f0 ff <0f> 0b 48 c7 c7 e0 91 29 8a e8 43 d6 f0 ff 0f 0b 48 89 f2 4c 89 e1 [ 60.971399][ T122] RSP: 0018:ffffc90002cffc30 EFLAGS: 00010082 [ 60.977449][ T122] RAX: 0000000000000022 RBX: ffffc90002631110 RCX: 0000000000000000 [ 60.985407][ T122] RDX: ffff88801b573a80 RSI: ffffffff81621a58 RDI: fffff5200059ff78 [ 60.993363][ T122] RBP: ffff88807a51c1f0 R08: 0000000000000022 R09: 0000000000000000 [ 61.001318][ T122] R10: 0000000080000001 R11: 2e4c4c554e20696c R12: 0000000000000000 [ 61.009272][ T122] R13: ffff888074fe5000 R14: 1ffff9200059ff8f R15: ffffc90002631120 [ 61.017234][ T122] FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 [ 61.026148][ T122] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 61.032725][ T122] CR2: 00007f0ef6641290 CR3: 000000001cf6e000 CR4: 00000000003506e0 [ 61.040685][ T122] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 61.048640][ T122] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 61.056596][ T122] Kernel panic - not syncing: Fatal exception [ 62.130939][ T122] Shutting down cpus with NMI [ 62.135846][ T122] Kernel Offset: disabled [ 62.140172][ T122] Rebooting in 86400 seconds..