./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2962833543 <...> Warning: Permanently added '10.128.0.245' (ECDSA) to the list of known hosts. execve("./syz-executor2962833543", ["./syz-executor2962833543"], 0x7ffccbf47c00 /* 10 vars */) = 0 brk(NULL) = 0x5555564d4000 brk(0x5555564d4c40) = 0x5555564d4c40 arch_prctl(ARCH_SET_FS, 0x5555564d4300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor2962833543", 4096) = 28 brk(0x5555564f5c40) = 0x5555564f5c40 brk(0x5555564f6000) = 0x5555564f6000 mprotect(0x7f7c1e1b6000, 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=0x5555564d45d0) = 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 87 69 a4 fe e9 b5 fb ff ff e8 7d 69 a4 fe [ 42.229890][ T5000] RSP: 0018:ffffc9000387fa78 EFLAGS: 00010293 [ 42.235939][ T5000] RAX: 0000000000000000 RBX: ffff888074a8a160 RCX: 0000000000000000 [ 42.243992][ T5000] RDX: ffff88801f581dc0 RSI: ffffffff8332a37d RDI: 0000000000000005 [ 42.252010][ T5000] RBP: ffff88807e986060 R08: 0000000000000005 R09: 0000000000000000 [ 42.260019][ T5000] R10: 0000000000000004 R11: 0000000000000000 R12: 0000000000000000 [ 42.268034][ T5000] R13: 1ffff9200070ff54 R14: ffff888074a8a5e8 R15: 000000006477ba41 [ 42.276002][ T5000] FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 42.284963][ T5000] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 42.291577][ T5000] CR2: 000055c7a173bff0 CR3: 000000000c571000 CR4: 0000000000350ee0 [ 42.299574][ T5000] Call Trace: [ 42.302871][ T5000] [ 42.305784][ T5000] ? __warn+0xe6/0x390 [ 42.309884][ T5000] ? nilfs_sufile_set_segment_usage+0x52d/0x6b0 [ 42.316140][ T5000] ? report_bug+0x2da/0x500 [ 42.320697][ T5000] ? handle_bug+0x3c/0x70 [ 42.325037][ T5000] ? exc_invalid_op+0x18/0x50 [ 42.329826][ T5000] ? asm_exc_invalid_op+0x1a/0x20 [ 42.334878][ T5000] ? nilfs_sufile_set_segment_usage+0x52d/0x6b0 [ 42.341151][ T5000] ? nilfs_sufile_set_segment_usage+0x52d/0x6b0 [ 42.347427][ T5000] ? nilfs_sufile_set_segment_usage+0x52d/0x6b0 [ 42.353655][ T5000] ? nilfs_sufile_mark_dirty+0x5a0/0x5a0 [ 42.359334][ T5000] nilfs_segctor_do_construct+0x1888/0x7200 [ 42.365257][ T5000] ? nilfs_segctor_abort_construction+0xe20/0xe20 [ 42.371704][ T5000] ? do_raw_spin_lock+0x124/0x2b0 [ 42.376761][ T5000] ? spin_bug+0x1c0/0x1c0 [ 42.381136][ T5000] ? do_raw_spin_unlock+0x175/0x230 [ 42.386362][ T5000] ? _raw_spin_unlock+0x28/0x40 [ 42.391244][ T5000] nilfs_segctor_construct+0x8e3/0xb30 [ 42.396723][ T5000] ? rcu_is_watching+0x12/0xb0 [ 42.401519][ T5000] ? trace_nilfs2_transaction_transition+0x17d/0x1c0 [ 42.408224][ T5000] nilfs_segctor_thread+0x3c7/0xf30 [ 42.413442][ T5000] ? nilfs_segctor_construct+0xb30/0xb30 [ 42.419113][ T5000] ? prepare_to_swait_exclusive+0x240/0x240 [ 42.425048][ T5000] ? __kthread_parkme+0x163/0x220 [ 42.430109][ T5000] ? nilfs_segctor_construct+0xb30/0xb30 [ 42.435754][ T5000] kthread+0x344/0x440 [ 42.439852][ T5000] ? kthread_complete_and_exit+0x40/0x40 [ 42.445506][ T5000] ret_from_fork+0x1f/0x30 [ 42.449975][ T5000] [ 42.453004][ T5000] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 42.460267][ T5000] CPU: 1 PID: 5000 Comm: segctord Not tainted 6.4.0-rc4-syzkaller-00051-g48b1320a674e #0 [ 42.470078][ T5000] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 [ 42.480118][ T5000] Call Trace: [ 42.483376][ T5000] [ 42.486289][ T5000] dump_stack_lvl+0xd9/0x150 [ 42.490958][ T5000] panic+0x686/0x730 [ 42.494838][ T5000] ? panic_smp_self_stop+0xa0/0xa0 [ 42.499932][ T5000] ? show_trace_log_lvl+0x284/0x390 [ 42.505130][ T5000] ? nilfs_sufile_set_segment_usage+0x52d/0x6b0 [ 42.511359][ T5000] check_panic_on_warn+0xb1/0xc0 [ 42.516281][ T5000] __warn+0xf2/0x390 [ 42.520163][ T5000] ? nilfs_sufile_set_segment_usage+0x52d/0x6b0 [ 42.526390][ T5000] report_bug+0x2da/0x500 [ 42.530713][ T5000] handle_bug+0x3c/0x70 [ 42.534849][ T5000] exc_invalid_op+0x18/0x50 [ 42.539333][ T5000] asm_exc_invalid_op+0x1a/0x20 [ 42.544176][ T5000] RIP: 0010:nilfs_sufile_set_segment_usage+0x52d/0x6b0 [ 42.551103][ T5000] Code: a0 51 fe 48 8b 6c 24 48 48 85 ed 0f 85 5b ff ff ff e9 63 ff ff ff e8 b2 a0 51 fe e8 2d e6 cd fd e9 db fe ff ff e8 a3 a0 51 fe <0f> 0b e9 04 fe ff ff e8 87 69 a4 fe e9 b5 fb ff ff e8 7d 69 a4 fe [ 42.570695][ T5000] RSP: 0018:ffffc9000387fa78 EFLAGS: 00010293 [ 42.576744][ T5000] RAX: 0000000000000000 RBX: ffff888074a8a160 RCX: 0000000000000000 [ 42.584696][ T5000] RDX: ffff88801f581dc0 RSI: ffffffff8332a37d RDI: 0000000000000005 [ 42.592736][ T5000] RBP: ffff88807e986060 R08: 0000000000000005 R09: 0000000000000000 [ 42.600690][ T5000] R10: 0000000000000004 R11: 0000000000000000 R12: 0000000000000000 [ 42.608646][ T5000] R13: 1ffff9200070ff54 R14: ffff888074a8a5e8 R15: 000000006477ba41 [ 42.616625][ T5000] ? nilfs_sufile_set_segment_usage+0x52d/0x6b0 [ 42.622858][ T5000] ? nilfs_sufile_set_segment_usage+0x52d/0x6b0 [ 42.629174][ T5000] ? nilfs_sufile_mark_dirty+0x5a0/0x5a0 [ 42.634815][ T5000] nilfs_segctor_do_construct+0x1888/0x7200 [ 42.640721][ T5000] ? nilfs_segctor_abort_construction+0xe20/0xe20 [ 42.647129][ T5000] ? do_raw_spin_lock+0x124/0x2b0 [ 42.652141][ T5000] ? spin_bug+0x1c0/0x1c0 [ 42.656458][ T5000] ? do_raw_spin_unlock+0x175/0x230 [ 42.661733][ T5000] ? _raw_spin_unlock+0x28/0x40 [ 42.666574][ T5000] nilfs_segctor_construct+0x8e3/0xb30 [ 42.672019][ T5000] ? rcu_is_watching+0x12/0xb0 [ 42.676772][ T5000] ? trace_nilfs2_transaction_transition+0x17d/0x1c0 [ 42.683431][ T5000] nilfs_segctor_thread+0x3c7/0xf30 [ 42.688619][ T5000] ? nilfs_segctor_construct+0xb30/0xb30 [ 42.694238][ T5000] ? prepare_to_swait_exclusive+0x240/0x240 [ 42.700127][ T5000] ? __kthread_parkme+0x163/0x220 [ 42.705136][ T5000] ? nilfs_segctor_construct+0xb30/0xb30 [ 42.710841][ T5000] kthread+0x344/0x440 [ 42.714891][ T5000] ? kthread_complete_and_exit+0x40/0x40 [ 42.720507][ T5000] ret_from_fork+0x1f/0x30 [ 42.724918][ T5000] [ 42.728722][ T5000] Kernel Offset: disabled [ 42.733096][ T5000] Rebooting in 86400 seconds..