./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor477817419 <...> Warning: Permanently added '10.128.0.118' (ECDSA) to the list of known hosts. execve("./syz-executor477817419", ["./syz-executor477817419"], 0x7ffdf5488db0 /* 10 vars */) = 0 brk(NULL) = 0x555557522000 brk(0x555557522c40) = 0x555557522c40 arch_prctl(ARCH_SET_FS, 0x555557522300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor477817419", 4096) = 27 brk(0x555557543c40) = 0x555557543c40 brk(0x555557544000) = 0x555557544000 mprotect(0x7f0a08745000, 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 4998 attached , child_tidptr=0x5555575225d0) = 4998 [pid 4998] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 4998] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4998] setsid() = 1 [pid 4998] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 4998] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 4998] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 4998] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 4998] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 4998] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 4998] unshare(CLONE_NEWNS) = 0 [pid 4998] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 4998] unshare(CLONE_NEWIPC) = 0 [pid 4998] unshare(CLONE_NEWCGROUP) = 0 [pid 4998] unshare(CLONE_NEWUTS) = 0 [pid 4998] unshare(CLONE_SYSVSEM) = 0 [pid 4998] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 4998] write(3, "16777216", 8) = 8 [pid 4998] close(3) = 0 [pid 4998] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 4998] write(3, "536870912", 9) = 9 [pid 4998] close(3) = 0 [pid 4998] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 4998] write(3, "1024", 4) = 4 [pid 4998] close(3) = 0 [pid 4998] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 4998] write(3, "8192", 4) = 4 [pid 4998] close(3) = 0 [pid 4998] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 4998] write(3, "1024", 4) = 4 [pid 4998] close(3) = 0 [pid 4998] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 4998] write(3, "1024", 4) = 4 [pid 4998] close(3) = 0 [pid 4998] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 4998] write(3, "1024 1048576 500 1024", 21) = 21 [pid 4998] close(3) = 0 [pid 4998] getpid() = 1 [pid 4998] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b e9 04 fe ff ff e8 67 6b a4 fe e9 b5 fb ff ff e8 5d 6b a4 fe [ 50.564084][ T5000] RSP: 0018:ffffc90003b1fa78 EFLAGS: 00010293 [ 50.570171][ T5000] RAX: 0000000000000000 RBX: ffff888077ada160 RCX: 0000000000000000 [ 50.578160][ T5000] RDX: ffff88802c953b80 RSI: ffffffff8332a14d RDI: 0000000000000005 [ 50.586147][ T5000] RBP: ffff88807208a060 R08: 0000000000000005 R09: 0000000000000000 [ 50.594096][ T5000] R10: 0000000000000004 R11: 0000000000000000 R12: 0000000000000000 [ 50.602082][ T5000] R13: 1ffff92000763f54 R14: ffff888077ada5e8 R15: 00000000646de7c3 [ 50.610157][ T5000] FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 50.619098][ T5000] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 50.625698][ T5000] CR2: 00005577bc711018 CR3: 000000000c571000 CR4: 0000000000350ee0 [ 50.633648][ T5000] Call Trace: [ 50.636937][ T5000] [ 50.639863][ T5000] ? nilfs_sufile_mark_dirty+0x5a0/0x5a0 [ 50.645519][ T5000] nilfs_segctor_do_construct+0x1888/0x7200 [ 50.651425][ T5000] ? nilfs_segctor_abort_construction+0xe20/0xe20 [ 50.657851][ T5000] ? do_raw_spin_lock+0x124/0x2b0 [ 50.662887][ T5000] ? spin_bug+0x1c0/0x1c0 [ 50.667237][ T5000] ? do_raw_spin_unlock+0x175/0x230 [ 50.672442][ T5000] ? _raw_spin_unlock+0x28/0x40 [ 50.677321][ T5000] nilfs_segctor_construct+0x8e3/0xb30 [ 50.682781][ T5000] ? rcu_is_watching+0x12/0xb0 [ 50.687561][ T5000] ? trace_nilfs2_transaction_transition+0x17d/0x1c0 [ 50.694240][ T5000] nilfs_segctor_thread+0x3c7/0xf30 [ 50.699454][ T5000] ? nilfs_segctor_construct+0xb30/0xb30 [ 50.705119][ T5000] ? prepare_to_swait_exclusive+0x240/0x240 [ 50.710997][ T5000] ? __kthread_parkme+0x163/0x220 [ 50.716029][ T5000] ? nilfs_segctor_construct+0xb30/0xb30 [ 50.721663][ T5000] kthread+0x344/0x440 [ 50.725756][ T5000] ? kthread_complete_and_exit+0x40/0x40 [ 50.731395][ T5000] ret_from_fork+0x1f/0x30 [ 50.735840][ T5000] [ 50.738864][ T5000] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 50.746126][ T5000] CPU: 1 PID: 5000 Comm: segctord Not tainted 6.4.0-rc3-syzkaller-00015-g27e462c8fad4 #0 [ 50.755904][ T5000] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023 [ 50.765933][ T5000] Call Trace: [ 50.769275][ T5000] [ 50.772183][ T5000] dump_stack_lvl+0xd9/0x150 [ 50.776755][ T5000] panic+0x686/0x730 [ 50.780630][ T5000] ? panic_smp_self_stop+0xa0/0xa0 [ 50.785722][ T5000] ? show_trace_log_lvl+0x285/0x390 [ 50.790911][ T5000] ? nilfs_sufile_set_segment_usage+0x52d/0x6b0 [ 50.797133][ T5000] check_panic_on_warn+0xb1/0xc0 [ 50.802050][ T5000] __warn+0xf2/0x390 [ 50.805927][ T5000] ? nilfs_sufile_set_segment_usage+0x52d/0x6b0 [ 50.812148][ T5000] report_bug+0x2da/0x500 [ 50.816463][ T5000] handle_bug+0x3c/0x70 [ 50.820610][ T5000] exc_invalid_op+0x18/0x50 [ 50.825098][ T5000] asm_exc_invalid_op+0x1a/0x20 [ 50.829940][ T5000] RIP: 0010:nilfs_sufile_set_segment_usage+0x52d/0x6b0 [ 50.836766][ T5000] Code: a1 51 fe 48 8b 6c 24 48 48 85 ed 0f 85 5b ff ff ff e9 63 ff ff ff e8 92 a1 51 fe e8 5d e8 cd fd e9 db fe ff ff e8 83 a1 51 fe <0f> 0b e9 04 fe ff ff e8 67 6b a4 fe e9 b5 fb ff ff e8 5d 6b a4 fe [ 50.856351][ T5000] RSP: 0018:ffffc90003b1fa78 EFLAGS: 00010293 [ 50.862389][ T5000] RAX: 0000000000000000 RBX: ffff888077ada160 RCX: 0000000000000000 [ 50.870339][ T5000] RDX: ffff88802c953b80 RSI: ffffffff8332a14d RDI: 0000000000000005 [ 50.878292][ T5000] RBP: ffff88807208a060 R08: 0000000000000005 R09: 0000000000000000 [ 50.886260][ T5000] R10: 0000000000000004 R11: 0000000000000000 R12: 0000000000000000 [ 50.894205][ T5000] R13: 1ffff92000763f54 R14: ffff888077ada5e8 R15: 00000000646de7c3 [ 50.902158][ T5000] ? nilfs_sufile_set_segment_usage+0x52d/0x6b0 [ 50.908381][ T5000] ? nilfs_sufile_set_segment_usage+0x52d/0x6b0 [ 50.914601][ T5000] ? nilfs_sufile_mark_dirty+0x5a0/0x5a0 [ 50.920223][ T5000] nilfs_segctor_do_construct+0x1888/0x7200 [ 50.926103][ T5000] ? nilfs_segctor_abort_construction+0xe20/0xe20 [ 50.932499][ T5000] ? do_raw_spin_lock+0x124/0x2b0 [ 50.937511][ T5000] ? spin_bug+0x1c0/0x1c0 [ 50.941825][ T5000] ? do_raw_spin_unlock+0x175/0x230 [ 50.947032][ T5000] ? _raw_spin_unlock+0x28/0x40 [ 50.951864][ T5000] nilfs_segctor_construct+0x8e3/0xb30 [ 50.957302][ T5000] ? rcu_is_watching+0x12/0xb0 [ 50.962048][ T5000] ? trace_nilfs2_transaction_transition+0x17d/0x1c0 [ 50.968697][ T5000] nilfs_segctor_thread+0x3c7/0xf30 [ 50.973874][ T5000] ? nilfs_segctor_construct+0xb30/0xb30 [ 50.979488][ T5000] ? prepare_to_swait_exclusive+0x240/0x240 [ 50.985364][ T5000] ? __kthread_parkme+0x163/0x220 [ 50.990384][ T5000] ? nilfs_segctor_construct+0xb30/0xb30 [ 50.995994][ T5000] kthread+0x344/0x440 [ 51.000041][ T5000] ? kthread_complete_and_exit+0x40/0x40 [ 51.005655][ T5000] ret_from_fork+0x1f/0x30 [ 51.010056][ T5000] [ 51.014015][ T5000] Kernel Offset: disabled [ 51.018816][ T5000] Rebooting in 86400 seconds..