./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1373119348 <...> Warning: Permanently added '10.128.10.60' (ECDSA) to the list of known hosts. execve("./syz-executor1373119348", ["./syz-executor1373119348"], 0x7fff6e6274f0 /* 10 vars */) = 0 brk(NULL) = 0x55555688c000 brk(0x55555688cc40) = 0x55555688cc40 arch_prctl(ARCH_SET_FS, 0x55555688c300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor1373119348", 4096) = 28 brk(0x5555568adc40) = 0x5555568adc40 brk(0x5555568ae000) = 0x5555568ae000 mprotect(0x7f4d67bbc000, 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 5234 attached , child_tidptr=0x55555688c5d0) = 5234 [pid 5234] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5234] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5234] setsid() = 1 [pid 5234] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5234] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5234] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5234] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5234] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5234] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5234] unshare(CLONE_NEWNS) = 0 [pid 5234] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5234] unshare(CLONE_NEWIPC) = 0 [pid 5234] unshare(CLONE_NEWCGROUP) = 0 [pid 5234] unshare(CLONE_NEWUTS) = 0 [pid 5234] unshare(CLONE_SYSVSEM) = 0 [pid 5234] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5234] write(3, "16777216", 8) = 8 [pid 5234] close(3) = 0 [pid 5234] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5234] write(3, "536870912", 9) = 9 [pid 5234] close(3) = 0 [pid 5234] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5234] write(3, "1024", 4) = 4 [pid 5234] close(3) = 0 [pid 5234] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5234] write(3, "8192", 4) = 4 [pid 5234] close(3) = 0 [pid 5234] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5234] write(3, "1024", 4) = 4 [pid 5234] close(3) = 0 [pid 5234] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5234] write(3, "1024", 4) = 4 [pid 5234] close(3) = 0 [pid 5234] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5234] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5234] close(3) = 0 [pid 5234] getpid() = 1 [pid 5234] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b eb ca e8 12 b3 56 fe 48 89 de 4c 89 ef e8 c7 a7 03 00 31 ff [ 53.257295][ T5235] RSP: 0018:ffffc90003b1f850 EFLAGS: 00010293 [ 53.263462][ T5235] RAX: 0000000000000000 RBX: ffffc90003b1f8f8 RCX: 0000000000000000 [ 53.271508][ T5235] RDX: ffff888020799d40 RSI: ffffffff83261cf5 RDI: 0000000000000005 [ 53.279543][ T5235] RBP: ffffc90003b1f910 R08: 0000000000000005 R09: 00000000fffffffe [ 53.287557][ T5235] R10: 00000000fffffffe R11: 0000000000000000 R12: 00000000fffffffe [ 53.295583][ T5235] R13: ffff888072048158 R14: ffffc90003b1f938 R15: ffff88807204b3d8 [ 53.303569][ T5235] FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 [ 53.312694][ T5235] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 53.319541][ T5235] CR2: 0000556f2f791d28 CR3: 0000000021068000 CR4: 00000000003506f0 [ 53.327590][ T5235] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 53.340523][ T5235] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 53.348619][ T5235] Call Trace: [ 53.351908][ T5235] [ 53.354876][ T5235] nilfs_dat_prepare_update+0x24/0xf0 [ 53.360338][ T5235] nilfs_direct_propagate+0x1dc/0x320 [ 53.365794][ T5235] ? nilfs_direct_lookup_contig+0x310/0x310 [ 53.371703][ T5235] ? down_write_killable+0x250/0x250 [ 53.377069][ T5235] ? mark_held_locks+0x9f/0xe0 [ 53.381851][ T5235] nilfs_bmap_propagate+0x73/0x170 [ 53.387022][ T5235] nilfs_segctor_apply_buffers+0x14a/0x470 [ 53.392866][ T5235] ? nilfs_redirty_inodes+0x110/0x110 [ 53.398319][ T5235] nilfs_segctor_scan_file+0x261/0x6f0 [ 53.403797][ T5235] ? nilfs_lookup_dirty_data_buffers+0x7a0/0x7a0 [ 53.410202][ T5235] nilfs_segctor_do_construct+0x239c/0x6af0 [ 53.416169][ T5235] ? nilfs_segctor_abort_construction+0xe20/0xe20 [ 53.422600][ T5235] ? do_raw_spin_lock+0x120/0x2a0 [ 53.427760][ T5235] ? rwlock_bug.part.0+0x90/0x90 [ 53.432721][ T5235] ? do_raw_spin_unlock+0x171/0x230 [ 53.438009][ T5235] ? _raw_spin_unlock+0x24/0x40 [ 53.442886][ T5235] nilfs_segctor_construct+0x8e3/0xb30 [ 53.448398][ T5235] ? rcu_read_lock_sched_held+0x3a/0x70 [ 53.453984][ T5235] ? trace_nilfs2_transaction_transition+0x227/0x2e0 [ 53.461410][ T5235] nilfs_segctor_thread+0x3c3/0xf30 [ 53.466691][ T5235] ? nilfs_segctor_construct+0xb30/0xb30 [ 53.472357][ T5235] ? prepare_to_wait_exclusive+0x2b0/0x2b0 [ 53.478651][ T5235] ? __kthread_parkme+0x15f/0x220 [ 53.483691][ T5235] ? nilfs_segctor_construct+0xb30/0xb30 [ 53.489417][ T5235] kthread+0x2e4/0x3a0 [ 53.493503][ T5235] ? kthread_complete_and_exit+0x40/0x40 [ 53.499457][ T5235] ret_from_fork+0x1f/0x30 [ 53.503967][ T5235] [ 53.507441][ T5235] Kernel panic - not syncing: panic_on_warn set ... [ 53.514054][ T5235] CPU: 1 PID: 5235 Comm: segctord Not tainted 6.1.0-rc3-next-20221104-syzkaller #0 [ 53.523326][ T5235] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 53.533398][ T5235] Call Trace: [ 53.536668][ T5235] [ 53.539593][ T5235] dump_stack_lvl+0xcd/0x134 [ 53.544187][ T5235] panic+0x2c8/0x622 [ 53.548085][ T5235] ? panic_print_sys_info.part.0+0x110/0x110 [ 53.554069][ T5235] ? __warn.cold+0x24b/0x350 [ 53.558660][ T5235] ? nilfs_dat_prepare_end+0x215/0x320 [ 53.564140][ T5235] __warn.cold+0x25c/0x350 [ 53.568555][ T5235] ? nilfs_dat_prepare_end+0x215/0x320 [ 53.574010][ T5235] report_bug+0x1bc/0x210 [ 53.578338][ T5235] handle_bug+0x3c/0x70 [ 53.582481][ T5235] exc_invalid_op+0x14/0x40 [ 53.586976][ T5235] asm_exc_invalid_op+0x16/0x20 [ 53.591816][ T5235] RIP: 0010:nilfs_dat_prepare_end+0x215/0x320 [ 53.597897][ T5235] Code: 48 83 c4 10 5b 5d 41 5c 41 5d 41 5e c3 e8 33 b3 56 fe 44 89 e6 bf fe ff ff ff e8 f6 af 56 fe 41 83 fc fe 75 d3 e8 1b b3 56 fe <0f> 0b eb ca e8 12 b3 56 fe 48 89 de 4c 89 ef e8 c7 a7 03 00 31 ff [ 53.618194][ T5235] RSP: 0018:ffffc90003b1f850 EFLAGS: 00010293 [ 53.624250][ T5235] RAX: 0000000000000000 RBX: ffffc90003b1f8f8 RCX: 0000000000000000 [ 53.632211][ T5235] RDX: ffff888020799d40 RSI: ffffffff83261cf5 RDI: 0000000000000005 [ 53.640257][ T5235] RBP: ffffc90003b1f910 R08: 0000000000000005 R09: 00000000fffffffe [ 53.648215][ T5235] R10: 00000000fffffffe R11: 0000000000000000 R12: 00000000fffffffe [ 53.656176][ T5235] R13: ffff888072048158 R14: ffffc90003b1f938 R15: ffff88807204b3d8 [ 53.664144][ T5235] ? nilfs_dat_prepare_end+0x215/0x320 [ 53.669608][ T5235] nilfs_dat_prepare_update+0x24/0xf0 [ 53.674982][ T5235] nilfs_direct_propagate+0x1dc/0x320 [ 53.680354][ T5235] ? nilfs_direct_lookup_contig+0x310/0x310 [ 53.686254][ T5235] ? down_write_killable+0x250/0x250 [ 53.691547][ T5235] ? mark_held_locks+0x9f/0xe0 [ 53.696306][ T5235] nilfs_bmap_propagate+0x73/0x170 [ 53.701422][ T5235] nilfs_segctor_apply_buffers+0x14a/0x470 [ 53.707225][ T5235] ? nilfs_redirty_inodes+0x110/0x110 [ 53.712595][ T5235] nilfs_segctor_scan_file+0x261/0x6f0 [ 53.718046][ T5235] ? nilfs_lookup_dirty_data_buffers+0x7a0/0x7a0 [ 53.724369][ T5235] nilfs_segctor_do_construct+0x239c/0x6af0 [ 53.730362][ T5235] ? nilfs_segctor_abort_construction+0xe20/0xe20 [ 53.736767][ T5235] ? do_raw_spin_lock+0x120/0x2a0 [ 53.741786][ T5235] ? rwlock_bug.part.0+0x90/0x90 [ 53.746738][ T5235] ? do_raw_spin_unlock+0x171/0x230 [ 53.751950][ T5235] ? _raw_spin_unlock+0x24/0x40 [ 53.756807][ T5235] nilfs_segctor_construct+0x8e3/0xb30 [ 53.762259][ T5235] ? rcu_read_lock_sched_held+0x3a/0x70 [ 53.767823][ T5235] ? trace_nilfs2_transaction_transition+0x227/0x2e0 [ 53.774593][ T5235] nilfs_segctor_thread+0x3c3/0xf30 [ 53.779790][ T5235] ? nilfs_segctor_construct+0xb30/0xb30 [ 53.785430][ T5235] ? prepare_to_wait_exclusive+0x2b0/0x2b0 [ 53.791248][ T5235] ? __kthread_parkme+0x15f/0x220 [ 53.796264][ T5235] ? nilfs_segctor_construct+0xb30/0xb30 [ 53.801892][ T5235] kthread+0x2e4/0x3a0 [ 53.805981][ T5235] ? kthread_complete_and_exit+0x40/0x40 [ 53.811621][ T5235] ret_from_fork+0x1f/0x30 [ 53.816064][ T5235] [ 53.819249][ T5235] Kernel Offset: disabled [ 53.823650][ T5235] Rebooting in 86400 seconds..