./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3904475339 <...> Warning: Permanently added '10.128.0.103' (ECDSA) to the list of known hosts. execve("./syz-executor3904475339", ["./syz-executor3904475339"], 0x7ffda665fa40 /* 10 vars */) = 0 brk(NULL) = 0x555556357000 brk(0x555556357c40) = 0x555556357c40 arch_prctl(ARCH_SET_FS, 0x555556357300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor3904475339", 4096) = 28 brk(0x555556378c40) = 0x555556378c40 brk(0x555556379000) = 0x555556379000 mprotect(0x7f1b67d57000, 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 5006 attached , child_tidptr=0x5555563575d0) = 5006 [pid 5006] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5006] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5006] setsid() = 1 [pid 5006] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5006] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5006] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5006] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5006] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5006] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5006] unshare(CLONE_NEWNS) = 0 [pid 5006] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5006] unshare(CLONE_NEWIPC) = 0 [pid 5006] unshare(CLONE_NEWCGROUP) = 0 [pid 5006] unshare(CLONE_NEWUTS) = 0 [pid 5006] unshare(CLONE_SYSVSEM) = 0 [pid 5006] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5006] write(3, "16777216", 8) = 8 [pid 5006] close(3) = 0 [pid 5006] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5006] write(3, "536870912", 9) = 9 [pid 5006] close(3) = 0 [pid 5006] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5006] write(3, "1024", 4) = 4 [pid 5006] close(3) = 0 [pid 5006] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5006] write(3, "8192", 4) = 4 [pid 5006] close(3) = 0 [pid 5006] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5006] write(3, "1024", 4) = 4 [pid 5006] close(3) = 0 [pid 5006] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5006] write(3, "1024", 4) = 4 [pid 5006] close(3) = 0 [pid 5006] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5006] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5006] close(3) = 0 [pid 5006] getpid() = 1 [pid 5006] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b e9 04 fe ff ff e8 f7 b3 a4 fe e9 b5 fb ff ff e8 ed b3 a4 fe [ 74.774270][ T5008] RSP: 0000:ffffc9000398fa78 EFLAGS: 00010293 [ 74.780363][ T5008] RAX: 0000000000000000 RBX: ffff888074efa160 RCX: 0000000000000000 [ 74.788374][ T5008] RDX: ffff88801e66d940 RSI: ffffffff83326fcd RDI: 0000000000000005 [ 74.796347][ T5008] RBP: ffff888078944060 R08: 0000000000000005 R09: 0000000000000000 [ 74.804348][ T5008] R10: 0000000000000004 R11: 0000000000000000 R12: 0000000000000000 [ 74.812356][ T5008] R13: 1ffff92000731f54 R14: ffff888074efa5e8 R15: 0000000064832f8e [ 74.820367][ T5008] FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 74.829360][ T5008] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 74.835973][ T5008] CR2: 00007f3174917095 CR3: 00000000293c6000 CR4: 00000000003506f0 [ 74.843987][ T5008] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 74.851993][ T5008] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 74.860054][ T5008] Call Trace: [ 74.863360][ T5008] [ 74.866323][ T5008] ? nilfs_sufile_mark_dirty+0x5a0/0x5a0 [ 74.872071][ T5008] nilfs_segctor_do_construct+0x1888/0x7200 [ 74.878060][ T5008] ? nilfs_segctor_abort_construction+0xe20/0xe20 [ 74.884496][ T5008] ? do_raw_spin_lock+0x124/0x2b0 [ 74.889600][ T5008] ? spin_bug+0x1c0/0x1c0 [ 74.894000][ T5008] ? do_raw_spin_unlock+0x175/0x230 [ 74.899270][ T5008] ? _raw_spin_unlock+0x28/0x40 [ 74.904189][ T5008] nilfs_segctor_construct+0x8e3/0xb30 [ 74.909744][ T5008] ? rcu_is_watching+0x12/0xb0 [ 74.914564][ T5008] ? trace_nilfs2_transaction_transition+0x17d/0x1c0 [ 74.921316][ T5008] nilfs_segctor_thread+0x3c7/0xf30 [ 74.926612][ T5008] ? nilfs_segctor_construct+0xb30/0xb30 [ 74.932275][ T5008] ? prepare_to_swait_exclusive+0x240/0x240 [ 74.938228][ T5008] ? __kthread_parkme+0x163/0x220 [ 74.943304][ T5008] ? nilfs_segctor_construct+0xb30/0xb30 [ 74.949021][ T5008] kthread+0x344/0x440 [ 74.953139][ T5008] ? kthread_complete_and_exit+0x40/0x40 [ 74.958843][ T5008] ret_from_fork+0x1f/0x30 [ 74.963322][ T5008] [ 74.966339][ T5008] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 74.973617][ T5008] CPU: 0 PID: 5008 Comm: segctord Not tainted 6.4.0-rc2-next-20230515-syzkaller #0 [ 74.982910][ T5008] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 [ 74.992974][ T5008] Call Trace: [ 74.996256][ T5008] [ 74.999197][ T5008] dump_stack_lvl+0xd9/0x150 [ 75.003833][ T5008] panic+0x686/0x730 [ 75.007849][ T5008] ? panic_smp_self_stop+0xa0/0xa0 [ 75.012987][ T5008] ? show_trace_log_lvl+0x285/0x390 [ 75.018231][ T5008] ? nilfs_sufile_set_segment_usage+0x52d/0x6b0 [ 75.024490][ T5008] check_panic_on_warn+0xb1/0xc0 [ 75.029462][ T5008] __warn+0xf2/0x390 [ 75.033393][ T5008] ? nilfs_sufile_set_segment_usage+0x52d/0x6b0 [ 75.039651][ T5008] report_bug+0x2da/0x500 [ 75.044027][ T5008] handle_bug+0x3c/0x70 [ 75.048204][ T5008] exc_invalid_op+0x18/0x50 [ 75.052722][ T5008] asm_exc_invalid_op+0x1a/0x20 [ 75.057617][ T5008] RIP: 0010:nilfs_sufile_set_segment_usage+0x52d/0x6b0 [ 75.064492][ T5008] Code: b4 51 fe 48 8b 6c 24 48 48 85 ed 0f 85 5b ff ff ff e9 63 ff ff ff e8 f2 b3 51 fe e8 6d 1b ce fd e9 db fe ff ff e8 e3 b3 51 fe <0f> 0b e9 04 fe ff ff e8 f7 b3 a4 fe e9 b5 fb ff ff e8 ed b3 a4 fe [ 75.084114][ T5008] RSP: 0000:ffffc9000398fa78 EFLAGS: 00010293 [ 75.090199][ T5008] RAX: 0000000000000000 RBX: ffff888074efa160 RCX: 0000000000000000 [ 75.098182][ T5008] RDX: ffff88801e66d940 RSI: ffffffff83326fcd RDI: 0000000000000005 [ 75.106168][ T5008] RBP: ffff888078944060 R08: 0000000000000005 R09: 0000000000000000 [ 75.114155][ T5008] R10: 0000000000000004 R11: 0000000000000000 R12: 0000000000000000 [ 75.122137][ T5008] R13: 1ffff92000731f54 R14: ffff888074efa5e8 R15: 0000000064832f8e [ 75.130132][ T5008] ? nilfs_sufile_set_segment_usage+0x52d/0x6b0 [ 75.136407][ T5008] ? nilfs_sufile_set_segment_usage+0x52d/0x6b0 [ 75.142710][ T5008] ? nilfs_sufile_mark_dirty+0x5a0/0x5a0 [ 75.148375][ T5008] nilfs_segctor_do_construct+0x1888/0x7200 [ 75.154331][ T5008] ? nilfs_segctor_abort_construction+0xe20/0xe20 [ 75.160777][ T5008] ? do_raw_spin_lock+0x124/0x2b0 [ 75.165869][ T5008] ? spin_bug+0x1c0/0x1c0 [ 75.170232][ T5008] ? do_raw_spin_unlock+0x175/0x230 [ 75.175465][ T5008] ? _raw_spin_unlock+0x28/0x40 [ 75.180443][ T5008] nilfs_segctor_construct+0x8e3/0xb30 [ 75.186033][ T5008] ? rcu_is_watching+0x12/0xb0 [ 75.190821][ T5008] ? trace_nilfs2_transaction_transition+0x17d/0x1c0 [ 75.197536][ T5008] nilfs_segctor_thread+0x3c7/0xf30 [ 75.202785][ T5008] ? nilfs_segctor_construct+0xb30/0xb30 [ 75.208468][ T5008] ? prepare_to_swait_exclusive+0x240/0x240 [ 75.214428][ T5008] ? __kthread_parkme+0x163/0x220 [ 75.219492][ T5008] ? nilfs_segctor_construct+0xb30/0xb30 [ 75.225165][ T5008] kthread+0x344/0x440 [ 75.229260][ T5008] ? kthread_complete_and_exit+0x40/0x40 [ 75.234934][ T5008] ret_from_fork+0x1f/0x30 [ 75.239396][ T5008] [ 75.242672][ T5008] Kernel Offset: disabled [ 75.247094][ T5008] Rebooting in 86400 seconds..