./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2403988862 <...> Warning: Permanently added '10.128.0.209' (ECDSA) to the list of known hosts. execve("./syz-executor2403988862", ["./syz-executor2403988862"], 0x7fffb87e3c30 /* 10 vars */) = 0 brk(NULL) = 0x5555555e7000 brk(0x5555555e7c40) = 0x5555555e7c40 arch_prctl(ARCH_SET_FS, 0x5555555e7300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor2403988862", 4096) = 28 brk(0x555555608c40) = 0x555555608c40 brk(0x555555609000) = 0x555555609000 mprotect(0x7f51c554f000, 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./strace-static-x86_64: Process 3607 attached , child_tidptr=0x5555555e75d0) = 3607 [pid 3607] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 3607] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3607] setsid() = 1 [pid 3607] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 3607] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 3607] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 3607] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 3607] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 3607] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 3607] unshare(CLONE_NEWNS) = 0 [pid 3607] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 3607] unshare(CLONE_NEWIPC) = 0 [pid 3607] unshare(CLONE_NEWCGROUP) = 0 [pid 3607] unshare(CLONE_NEWUTS) = 0 [pid 3607] unshare(CLONE_SYSVSEM) = 0 [pid 3607] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3607] write(3, "16777216", 8) = 8 [pid 3607] close(3) = 0 [pid 3607] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 3607] write(3, "536870912", 9) = 9 [pid 3607] close(3) = 0 [pid 3607] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3607] write(3, "1024", 4) = 4 [pid 3607] close(3) = 0 [pid 3607] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3607] write(3, "8192", 4) = 4 [pid 3607] close(3) = 0 [pid 3607] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3607] write(3, "1024", 4) = 4 [pid 3607] close(3) = 0 [pid 3607] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 3607] write(3, "1024", 4) = 4 [pid 3607] close(3) = 0 [pid 3607] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 3607] write(3, "1024 1048576 500 1024", 21) = 21 [pid 3607] close(3) = 0 [pid 3607] getpid() = 1 [pid 3607] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 3c 02 00 0f 85 64 02 00 00 4c 8b 6d 08 31 ff 4d 89 ec 41 83 e4 [ 59.117538][ T3608] RSP: 0018:ffffc90003f7fb10 EFLAGS: 00010216 [ 59.123589][ T3608] RAX: dffffc0000000000 RBX: ffff888071f48ae0 RCX: 0000000000000001 [ 59.131552][ T3608] RDX: 000000000000002d RSI: 0000000000000000 RDI: ffff88801f5a09e0 [ 59.139504][ T3608] RBP: 0000000000000160 R08: 0000000000000001 R09: 0000000000000000 [ 59.147458][ T3608] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000160 [ 59.155501][ T3608] R13: dffffc0000000000 R14: 0000000000000168 R15: ffffea0001bc6000 [ 59.163458][ T3608] FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 [ 59.172372][ T3608] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 59.178937][ T3608] CR2: 00007f51c55561d0 CR3: 000000000bc8e000 CR4: 0000000000350ef0 [ 59.186893][ T3608] Call Trace: [ 59.190153][ T3608] [ 59.193068][ T3608] nilfs_segctor_do_construct+0x2049/0x6af0 [ 59.198958][ T3608] ? nilfs_segctor_abort_construction+0xe20/0xe20 [ 59.205360][ T3608] ? do_raw_spin_lock+0x120/0x2a0 [ 59.210373][ T3608] ? rwlock_bug.part.0+0x90/0x90 [ 59.215297][ T3608] ? do_raw_spin_unlock+0x171/0x230 [ 59.220483][ T3608] ? _raw_spin_unlock+0x24/0x40 [ 59.225450][ T3608] nilfs_segctor_construct+0x8e3/0xb30 [ 59.230901][ T3608] ? rcu_read_lock_sched_held+0x3a/0x70 [ 59.236430][ T3608] ? trace_nilfs2_transaction_transition+0x227/0x2e0 [ 59.243092][ T3608] nilfs_segctor_thread+0x3c3/0xf30 [ 59.248276][ T3608] ? nilfs_segctor_construct+0xb30/0xb30 [ 59.253899][ T3608] ? prepare_to_wait_exclusive+0x2b0/0x2b0 [ 59.259690][ T3608] ? __kthread_parkme+0x15f/0x220 [ 59.264704][ T3608] ? nilfs_segctor_construct+0xb30/0xb30 [ 59.270322][ T3608] kthread+0x2e4/0x3a0 [ 59.274376][ T3608] ? kthread_complete_and_exit+0x40/0x40 [ 59.279997][ T3608] ret_from_fork+0x1f/0x30 [ 59.284408][ T3608] [ 59.287406][ T3608] Modules linked in: [ 59.291604][ T3608] ---[ end trace 0000000000000000 ]--- [ 59.297285][ T3608] RIP: 0010:lock_page+0x3b/0x2f0 [ 59.302342][ T3608] Code: 5f 55 fe be bc 03 00 00 48 c7 c7 80 61 31 8a e8 fb 91 2b fe 2e 2e 2e 31 c0 4c 89 f2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 64 02 00 00 4c 8b 6d 08 31 ff 4d 89 ec 41 83 e4 [ 59.322063][ T3608] RSP: 0018:ffffc90003f7fb10 EFLAGS: 00010216 [ 59.328185][ T3608] RAX: dffffc0000000000 RBX: ffff888071f48ae0 RCX: 0000000000000001 [ 59.336167][ T3608] RDX: 000000000000002d RSI: 0000000000000000 RDI: ffff88801f5a09e0 [ 59.344155][ T3608] RBP: 0000000000000160 R08: 0000000000000001 R09: 0000000000000000 [ 59.352136][ T3608] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000160 [ 59.360101][ T3608] R13: dffffc0000000000 R14: 0000000000000168 R15: ffffea0001bc6000 [ 59.368105][ T3608] FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 [ 59.377063][ T3608] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 59.383653][ T3608] CR2: 00007f51c55561d0 CR3: 000000000bc8e000 CR4: 0000000000350ef0 [ 59.391629][ T3608] Kernel panic - not syncing: Fatal exception [ 59.397775][ T3608] Kernel Offset: disabled [ 59.402086][ T3608] Rebooting in 86400 seconds..