./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2270080396 <...> Warning: Permanently added '10.128.10.21' (ECDSA) to the list of known hosts. execve("./syz-executor2270080396", ["./syz-executor2270080396"], 0x7fffdcb4a280 /* 10 vars */) = 0 brk(NULL) = 0x555555a81000 brk(0x555555a81c40) = 0x555555a81c40 arch_prctl(ARCH_SET_FS, 0x555555a81300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor2270080396", 4096) = 28 brk(0x555555aa2c40) = 0x555555aa2c40 brk(0x555555aa3000) = 0x555555aa3000 mprotect(0x7f882b7a0000, 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=0x555555a815d0) = 3605 ./strace-static-x86_64: Process 3605 attached [pid 3605] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 3605] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3605] setsid() = 1 [pid 3605] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 3605] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 3605] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 3605] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 3605] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 3605] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 3605] unshare(CLONE_NEWNS) = 0 [pid 3605] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 3605] unshare(CLONE_NEWIPC) = 0 [pid 3605] unshare(CLONE_NEWCGROUP) = 0 [pid 3605] unshare(CLONE_NEWUTS) = 0 [pid 3605] unshare(CLONE_SYSVSEM) = 0 [pid 3605] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3605] write(3, "16777216", 8) = 8 [pid 3605] close(3) = 0 [pid 3605] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 3605] write(3, "536870912", 9) = 9 [pid 3605] close(3) = 0 [pid 3605] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3605] write(3, "1024", 4) = 4 [pid 3605] close(3) = 0 [pid 3605] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3605] write(3, "8192", 4) = 4 [pid 3605] close(3) = 0 [pid 3605] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3605] write(3, "1024", 4) = 4 [pid 3605] close(3) = 0 [pid 3605] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 3605] write(3, "1024", 4) = 4 [pid 3605] close(3) = 0 [pid 3605] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 3605] write(3, "1024 1048576 500 1024", 21) = 21 [pid 3605] close(3) = 0 [pid 3605] getpid() = 1 [pid 3605] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 80 3c 38 00 74 08 48 89 df e8 c7 92 8c fe 48 8b 1b 48 89 de 48 [ 43.013152][ T3606] RSP: 0018:ffffc90003bef698 EFLAGS: 00010206 [ 43.019208][ T3606] RAX: 000000000000002d RBX: 0000000000000168 RCX: ffff888074170000 [ 43.027204][ T3606] RDX: ffff888074170000 RSI: ffff88807417043c RDI: ffffc90003bef620 [ 43.035170][ T3606] RBP: ffffc90003befbf0 R08: ffffffff81b446e9 R09: fffff9400038aa01 [ 43.043131][ T3606] R10: fffff9400038aa01 R11: 1ffffd400038aa00 R12: 1ffff1100e3964b0 [ 43.051268][ T3606] R13: 0000000000000160 R14: 0000000000000160 R15: dffffc0000000000 [ 43.059239][ T3606] FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 [ 43.068157][ T3606] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.074728][ T3606] CR2: 00007f882b7a71d0 CR3: 000000000c88e000 CR4: 00000000003506f0 [ 43.082692][ T3606] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 43.090653][ T3606] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 43.098877][ T3606] Call Trace: [ 43.102146][ T3606] [ 43.105091][ T3606] nilfs_segctor_do_construct+0x4ae9/0x6f80 [ 43.110981][ T3606] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 43.116973][ T3606] ? nilfs_transaction_unlock+0x210/0x210 [ 43.122699][ T3606] ? _raw_spin_lock_irqsave+0xbf/0x100 [ 43.128151][ T3606] ? __might_sleep+0xc0/0xc0 [ 43.132752][ T3606] ? rcu_read_lock_sched_held+0x5d/0x110 [ 43.138469][ T3606] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 43.144470][ T3606] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 43.150356][ T3606] ? nilfs_segctor_confirm+0x24b/0x2d0 [ 43.155824][ T3606] ? trace_lock_release+0x95/0x220 [ 43.161014][ T3606] ? nilfs_segctor_confirm+0x24b/0x2d0 [ 43.166478][ T3606] ? lock_release+0x81/0x820 [ 43.171058][ T3606] ? read_lock_is_recursive+0x10/0x10 [ 43.176424][ T3606] ? __up_read+0x690/0x690 [ 43.180839][ T3606] ? do_raw_spin_lock+0x148/0x360 [ 43.185855][ T3606] ? __lock_acquire+0x1f60/0x1f60 [ 43.190870][ T3606] ? do_raw_spin_unlock+0x134/0x8a0 [ 43.196062][ T3606] ? _raw_spin_unlock+0x24/0x40 [ 43.200903][ T3606] ? nilfs_segctor_confirm+0x24b/0x2d0 [ 43.206351][ T3606] nilfs_segctor_construct+0x143/0x8d0 [ 43.211824][ T3606] ? trace_nilfs2_transaction_transition+0xec/0x2e0 [ 43.218403][ T3606] nilfs_segctor_thread+0x59e/0x11c0 [ 43.223697][ T3606] ? do_raw_spin_lock+0x148/0x360 [ 43.228816][ T3606] ? nilfs_construction_timeout+0x40/0x40 [ 43.234612][ T3606] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 43.240500][ T3606] ? _raw_spin_unlock+0x40/0x40 [ 43.245352][ T3606] ? wake_bit_function+0x240/0x240 [ 43.250462][ T3606] ? _raw_spin_unlock+0x40/0x40 [ 43.255303][ T3606] ? __kthread_parkme+0x166/0x1c0 [ 43.260323][ T3606] kthread+0x266/0x300 [ 43.264397][ T3606] ? nilfs_construction_timeout+0x40/0x40 [ 43.270142][ T3606] ? kthread_blkcg+0xd0/0xd0 [ 43.274724][ T3606] ret_from_fork+0x1f/0x30 [ 43.279136][ T3606] [ 43.282146][ T3606] Modules linked in: [ 43.286218][ T3606] ---[ end trace 0000000000000000 ]--- [ 43.291712][ T3606] RIP: 0010:lock_page+0x3a/0x2b0 [ 43.296710][ T3606] Code: 00 fc ff df e8 57 9a 38 fe 48 c7 c7 e0 53 d5 8a be bc 03 00 00 e8 76 ea 0d fe 2e 2e 2e 31 c0 49 8d 5e 08 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 c7 92 8c fe 48 8b 1b 48 89 de 48 [ 43.316351][ T3606] RSP: 0018:ffffc90003bef698 EFLAGS: 00010206 [ 43.322457][ T3606] RAX: 000000000000002d RBX: 0000000000000168 RCX: ffff888074170000 [ 43.330429][ T3606] RDX: ffff888074170000 RSI: ffff88807417043c RDI: ffffc90003bef620 [ 43.338416][ T3606] RBP: ffffc90003befbf0 R08: ffffffff81b446e9 R09: fffff9400038aa01 [ 43.346404][ T3606] R10: fffff9400038aa01 R11: 1ffffd400038aa00 R12: 1ffff1100e3964b0 [ 43.354450][ T3606] R13: 0000000000000160 R14: 0000000000000160 R15: dffffc0000000000 [ 43.362439][ T3606] FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 [ 43.371352][ T3606] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.377947][ T3606] CR2: 0000556434238eb0 CR3: 000000000c88e000 CR4: 00000000003506e0 [ 43.385937][ T3606] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 43.394008][ T3606] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 43.401997][ T3606] Kernel panic - not syncing: Fatal exception [ 43.408221][ T3606] Kernel Offset: disabled [ 43.412537][ T3606] Rebooting in 86400 seconds..