./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1524014371 <...> DUID 00:04:b0:cd:33:f9:4f:8a:55:45:4d:7b:3b:ee:3a:71:f0:8b forked to background, child pid 4659 [ 28.913156][ T4660] 8021q: adding VLAN 0 to HW filter on device bond0 [ 28.924669][ T4660] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.107' (ECDSA) to the list of known hosts. execve("./syz-executor1524014371", ["./syz-executor1524014371"], 0x7ffc3a276aa0 /* 10 vars */) = 0 brk(NULL) = 0x5555555c1000 brk(0x5555555c1c40) = 0x5555555c1c40 arch_prctl(ARCH_SET_FS, 0x5555555c1300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor1524014371", 4096) = 28 brk(0x5555555e2c40) = 0x5555555e2c40 brk(0x5555555e3000) = 0x5555555e3000 mprotect(0x7fe154a4b000, 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 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555555c15d0) = 4992 ./strace-static-x86_64: Process 4992 attached [pid 4992] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 4992] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4992] setsid() = 1 [pid 4992] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 4992] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 4992] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 4992] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 4992] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 4992] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 4992] unshare(CLONE_NEWNS) = 0 [pid 4992] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 4992] unshare(CLONE_NEWIPC) = 0 [pid 4992] unshare(CLONE_NEWCGROUP) = 0 [pid 4992] unshare(CLONE_NEWUTS) = 0 [pid 4992] unshare(CLONE_SYSVSEM) = 0 [pid 4992] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 4992] write(3, "16777216", 8) = 8 [pid 4992] close(3) = 0 [pid 4992] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 4992] write(3, "536870912", 9) = 9 [pid 4992] close(3) = 0 [pid 4992] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 4992] write(3, "1024", 4) = 4 [pid 4992] close(3) = 0 [pid 4992] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 4992] write(3, "8192", 4) = 4 [pid 4992] close(3) = 0 [pid 4992] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 4992] write(3, "1024", 4) = 4 [pid 4992] close(3) = 0 [pid 4992] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 4992] write(3, "1024", 4) = 4 [pid 4992] close(3) = 0 [pid 4992] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 4992] write(3, "1024 1048576 500 1024", 21) = 21 [pid 4992] close(3) = 0 [pid 4992] getpid() = 1 [pid 4992] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b f3 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 [ 53.672378][ T4992] RSP: 0018:ffffc90003a5f700 EFLAGS: 00010246 [ 53.678462][ T4992] RAX: 0000000000000055 RBX: ffffffff8afc0820 RCX: d18c359a429ffa00 [ 53.686419][ T4992] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 53.694375][ T4992] RBP: ffffc90003a5f7f0 R08: ffffffff816f0f4c R09: fffff5200074be95 [ 53.702335][ T4992] R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff8afc0840 [ 53.710298][ T4992] R13: ffffc90003a5f720 R14: ffffffff8c850899 R15: ffff888029b9c6a8 [ 53.718260][ T4992] FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 53.727180][ T4992] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 53.733751][ T4992] CR2: 00005649559db600 CR3: 000000002b965000 CR4: 00000000003506f0 [ 53.741713][ T4992] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 53.749671][ T4992] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 53.757631][ T4992] Call Trace: [ 53.760899][ T4992] [ 53.763821][ T4992] ? reiserfs_debug+0x10/0x10 [ 53.768498][ T4992] ? __mutex_unlock_slowpath+0x21c/0x750 [ 53.774135][ T4992] ? mutex_lock_io_nested+0x60/0x60 [ 53.779333][ T4992] ? mutex_lock_nested+0x1b/0x20 [ 53.784267][ T4992] do_journal_end+0x46d6/0x4770 [ 53.789117][ T4992] ? journal_join_abort+0xe0/0xe0 [ 53.794127][ T4992] ? dquot_writeback_dquots+0xb38/0xc10 [ 53.799669][ T4992] ? journal_mark_dirty+0xe40/0xe40 [ 53.804867][ T4992] ? dqput+0x860/0x860 [ 53.808940][ T4992] ? journal_end_sync+0x112/0x1e0 [ 53.813952][ T4992] reiserfs_sync_fs+0xce/0x150 [ 53.818717][ T4992] ? handle_attrs+0x1f0/0x1f0 [ 53.823384][ T4992] ? __dentry_kill+0x52e/0x650 [ 53.828657][ T4992] ? __static_call_return0+0x9/0x10 [ 53.833950][ T4992] ? get_nr_dirty_inodes+0x1c7/0x210 [ 53.839231][ T4992] sync_filesystem+0xec/0x220 [ 53.843907][ T4992] generic_shutdown_super+0x6f/0x340 [ 53.849182][ T4992] kill_block_super+0x84/0xf0 [ 53.853855][ T4992] deactivate_locked_super+0xa4/0x110 [ 53.859219][ T4992] cleanup_mnt+0x426/0x4c0 [ 53.863627][ T4992] ? _raw_spin_unlock_irq+0x23/0x50 [ 53.868817][ T4992] task_work_run+0x24a/0x300 [ 53.873395][ T4992] ? kasan_quarantine_put+0xd8/0x230 [ 53.878674][ T4992] ? task_work_cancel+0x2b0/0x2b0 [ 53.883683][ T4992] ? kmem_cache_free+0x297/0x520 [ 53.888608][ T4992] ? do_exit+0x68a/0x2290 [ 53.892927][ T4992] do_exit+0x68f/0x2290 [ 53.897078][ T4992] ? put_task_struct+0x80/0x80 [ 53.901857][ T4992] ? lockdep_hardirqs_on_prepare+0x43c/0x7a0 [ 53.907834][ T4992] ? print_irqtrace_events+0x220/0x220 [ 53.913306][ T4992] ? _raw_spin_unlock_irq+0x23/0x50 [ 53.918498][ T4992] ? lockdep_hardirqs_on+0x98/0x140 [ 53.923707][ T4992] do_group_exit+0x206/0x2c0 [ 53.928290][ T4992] __x64_sys_exit_group+0x3f/0x40 [ 53.933307][ T4992] do_syscall_64+0x41/0xc0 [ 53.937721][ T4992] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 53.943603][ T4992] RIP: 0033:0x7fe1549daf49 [ 53.948039][ T4992] Code: Unable to access opcode bytes at 0x7fe1549daf1f. [ 53.955038][ T4992] RSP: 002b:00007ffe76fbbc28 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 53.963439][ T4992] RAX: ffffffffffffffda RBX: 00007fe154a51410 RCX: 00007fe1549daf49 [ 53.971398][ T4992] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 53.979356][ T4992] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00007fe154a4be40 [ 53.987320][ T4992] R10: 0000000020000000 R11: 0000000000000246 R12: 00007fe154a51410 [ 53.995281][ T4992] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 54.003248][ T4992] [ 54.006340][ T4992] Modules linked in: [ 54.010850][ T4992] ---[ end trace 0000000000000000 ]--- [ 54.016465][ T4992] RIP: 0010:__reiserfs_panic+0x13e/0x140 [ 54.022173][ T4992] Code: c7 c1 a0 ba fb 8a 48 0f 44 c8 48 0f 44 d8 48 c7 c7 60 bb fb 8a 4c 89 fe 48 89 da 4d 89 f0 49 c7 c1 60 9a ca 91 e8 82 e0 7e 08 <0f> 0b f3 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 [ 54.041892][ T4992] RSP: 0018:ffffc90003a5f700 EFLAGS: 00010246 [ 54.047966][ T4992] RAX: 0000000000000055 RBX: ffffffff8afc0820 RCX: d18c359a429ffa00 [ 54.055958][ T4992] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 54.064063][ T4992] RBP: ffffc90003a5f7f0 R08: ffffffff816f0f4c R09: fffff5200074be95 [ 54.072050][ T4992] R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff8afc0840 [ 54.080295][ T4992] R13: ffffc90003a5f720 R14: ffffffff8c850899 R15: ffff888029b9c6a8 [ 54.088405][ T4992] FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 54.097362][ T4992] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 54.103960][ T4992] CR2: 00005649559db600 CR3: 000000002b965000 CR4: 00000000003506f0 [ 54.111973][ T4992] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 54.119932][ T4992] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 54.127927][ T4992] Kernel panic - not syncing: Fatal exception [ 54.134168][ T4992] Kernel Offset: disabled [ 54.138490][ T4992] Rebooting in 86400 seconds..