./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2382354511 <...> Warning: Permanently added '10.128.10.62' (ECDSA) to the list of known hosts. execve("./syz-executor2382354511", ["./syz-executor2382354511"], 0x7fffbb377bd0 /* 10 vars */) = 0 brk(NULL) = 0x555556731000 brk(0x555556731c40) = 0x555556731c40 arch_prctl(ARCH_SET_FS, 0x555556731300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor2382354511", 4096) = 28 brk(0x555556752c40) = 0x555556752c40 brk(0x555556753000) = 0x555556753000 mprotect(0x7f3c4c12c000, 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 5062 attached , child_tidptr=0x5555567315d0) = 5062 [pid 5062] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5062] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5062] setsid() = 1 [pid 5062] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5062] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5062] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5062] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5062] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5062] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5062] unshare(CLONE_NEWNS) = 0 [pid 5062] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5062] unshare(CLONE_NEWIPC) = 0 [pid 5062] unshare(CLONE_NEWCGROUP) = 0 [pid 5062] unshare(CLONE_NEWUTS) = 0 [pid 5062] unshare(CLONE_SYSVSEM) = 0 [pid 5062] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5062] write(3, "16777216", 8) = 8 [pid 5062] close(3) = 0 [pid 5062] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5062] write(3, "536870912", 9) = 9 [pid 5062] close(3) = 0 [pid 5062] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5062] write(3, "1024", 4) = 4 [pid 5062] close(3) = 0 [pid 5062] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5062] write(3, "8192", 4) = 4 [pid 5062] close(3) = 0 [pid 5062] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5062] write(3, "1024", 4) = 4 [pid 5062] close(3) = 0 [pid 5062] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5062] write(3, "1024", 4) = 4 [pid 5062] close(3) = 0 [pid 5062] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5062] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5062] close(3) = 0 [pid 5062] getpid() = 1 [pid 5062] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b e9 b4 f9 ff ff e8 a5 44 92 ff 0f 0b e9 06 fa ff ff e8 99 44 [ 53.807023][ T5062] RSP: 0018:ffffc90003fcf858 EFLAGS: 00010293 [ 53.813102][ T5062] RAX: 0000000000000000 RBX: ffff888072c012b8 RCX: 0000000000000000 [ 53.821353][ T5062] RDX: ffff88807d869d40 RSI: ffffffff81ef0d8f RDI: 0000000000000001 [ 53.829385][ T5062] RBP: ffff888072c2ae00 R08: 0000000000000001 R09: 0000000000000000 [ 53.837397][ T5062] R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 [ 53.845395][ T5062] R13: ffff8880200641f0 R14: ffff888072c012b8 R15: ffff888072c2ae20 [ 53.853390][ T5062] FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 53.862786][ T5062] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 53.869401][ T5062] CR2: 00007f3c4c092f30 CR3: 0000000029c4e000 CR4: 0000000000350ef0 [ 53.877664][ T5062] Call Trace: [ 53.880944][ T5062] [ 53.883913][ T5062] nilfs_segctor_do_construct+0x480/0x6b30 [ 53.889747][ T5062] ? find_held_lock+0x2d/0x110 [ 53.894560][ T5062] ? nilfs_segctor_confirm+0x107/0x190 [ 53.900044][ T5062] ? nilfs_segctor_abort_construction+0xe20/0xe20 [ 53.906537][ T5062] ? do_raw_spin_lock+0x124/0x2b0 [ 53.911577][ T5062] ? rwlock_bug.part.0+0x90/0x90 [ 53.916562][ T5062] ? do_raw_spin_unlock+0x175/0x230 [ 53.921784][ T5062] ? _raw_spin_unlock+0x28/0x40 [ 53.926669][ T5062] nilfs_segctor_construct+0x8e3/0xb30 [ 53.932148][ T5062] ? rcu_read_lock_sched_held+0x3e/0x70 [ 53.937724][ T5062] ? trace_nilfs2_transaction_transition+0x227/0x2e0 [ 53.944484][ T5062] nilfs_detach_log_writer+0x3bf/0x9f0 [ 53.949944][ T5062] ? nilfs_clean_segments+0xa80/0xa80 [ 53.955560][ T5062] ? hook_sb_remount+0xf0/0xf0 [ 53.960376][ T5062] ? prepare_to_wait_exclusive+0x2c0/0x2c0 [ 53.966232][ T5062] ? dispose_list+0x1e0/0x1e0 [ 53.970930][ T5062] nilfs_put_super+0x43/0x1b0 [ 53.975640][ T5062] ? nilfs_freeze+0xc0/0xc0 [ 53.980159][ T5062] generic_shutdown_super+0x158/0x410 [ 53.985563][ T5062] kill_block_super+0x9b/0xf0 [ 53.990262][ T5062] deactivate_locked_super+0x98/0x160 [ 53.995672][ T5062] deactivate_super+0xb1/0xd0 [ 54.000363][ T5062] cleanup_mnt+0x2ae/0x3d0 [ 54.004822][ T5062] task_work_run+0x16f/0x270 [ 54.009436][ T5062] ? task_work_cancel+0x30/0x30 [ 54.014331][ T5062] do_exit+0xaa8/0x2950 [ 54.018530][ T5062] ? lock_downgrade+0x6e0/0x6e0 [ 54.023375][ T5062] ? do_raw_spin_lock+0x124/0x2b0 [ 54.028448][ T5062] ? mm_update_next_owner+0x7b0/0x7b0 [ 54.033865][ T5062] ? rwlock_bug.part.0+0x90/0x90 [ 54.038887][ T5062] ? _raw_spin_unlock_irq+0x23/0x50 [ 54.044118][ T5062] do_group_exit+0xd4/0x2a0 [ 54.048649][ T5062] __x64_sys_exit_group+0x3e/0x50 [ 54.053892][ T5062] do_syscall_64+0x39/0xb0 [ 54.058330][ T5062] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 54.064539][ T5062] RIP: 0033:0x7f3c4c0bc9b9 [ 54.068968][ T5062] Code: Unable to access opcode bytes at 0x7f3c4c0bc98f. [ 54.076029][ T5062] RSP: 002b:00007ffc72e1b868 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 54.084473][ T5062] RAX: ffffffffffffffda RBX: 00007f3c4c132330 RCX: 00007f3c4c0bc9b9 [ 54.092441][ T5062] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 54.100433][ T5062] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00007f3c4c12ce40 [ 54.108431][ T5062] R10: 0000000000000a1a R11: 0000000000000246 R12: 00007f3c4c132330 [ 54.116447][ T5062] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 54.124457][ T5062] [ 54.127478][ T5062] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 54.134734][ T5062] CPU: 0 PID: 5062 Comm: syz-executor238 Not tainted 6.2.0-rc1-syzkaller-00095-ge4cf7c25bae5 #0 [ 54.145124][ T5062] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 54.155173][ T5062] Call Trace: [ 54.158451][ T5062] [ 54.161375][ T5062] dump_stack_lvl+0xd1/0x138 [ 54.165975][ T5062] panic+0x2cc/0x626 [ 54.169857][ T5062] ? panic_print_sys_info.part.0+0x110/0x110 [ 54.175830][ T5062] ? mark_buffer_dirty+0x67f/0xa40 [ 54.180924][ T5062] check_panic_on_warn.cold+0x19/0x35 [ 54.186304][ T5062] __warn+0xf2/0x1a0 [ 54.190382][ T5062] ? mark_buffer_dirty+0x67f/0xa40 [ 54.195503][ T5062] report_bug+0x1c0/0x210 [ 54.199828][ T5062] handle_bug+0x3c/0x70 [ 54.203988][ T5062] exc_invalid_op+0x18/0x50 [ 54.208488][ T5062] asm_exc_invalid_op+0x1a/0x20 [ 54.213328][ T5062] RIP: 0010:mark_buffer_dirty+0x67f/0xa40 [ 54.219126][ T5062] Code: 89 f5 41 83 e5 01 4c 89 ee e8 9d 41 92 ff 4d 85 ed 0f 84 d3 fd ff ff e8 bf 44 92 ff 49 8d 5e ff e9 c5 fd ff ff e8 b1 44 92 ff <0f> 0b e9 b4 f9 ff ff e8 a5 44 92 ff 0f 0b e9 06 fa ff ff e8 99 44 [ 54.238724][ T5062] RSP: 0018:ffffc90003fcf858 EFLAGS: 00010293 [ 54.245248][ T5062] RAX: 0000000000000000 RBX: ffff888072c012b8 RCX: 0000000000000000 [ 54.253316][ T5062] RDX: ffff88807d869d40 RSI: ffffffff81ef0d8f RDI: 0000000000000001 [ 54.261369][ T5062] RBP: ffff888072c2ae00 R08: 0000000000000001 R09: 0000000000000000 [ 54.269509][ T5062] R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 [ 54.277482][ T5062] R13: ffff8880200641f0 R14: ffff888072c012b8 R15: ffff888072c2ae20 [ 54.285461][ T5062] ? mark_buffer_dirty+0x67f/0xa40 [ 54.290588][ T5062] ? mark_buffer_dirty+0x67f/0xa40 [ 54.295695][ T5062] nilfs_segctor_do_construct+0x480/0x6b30 [ 54.301500][ T5062] ? find_held_lock+0x2d/0x110 [ 54.306363][ T5062] ? nilfs_segctor_confirm+0x107/0x190 [ 54.311997][ T5062] ? nilfs_segctor_abort_construction+0xe20/0xe20 [ 54.318583][ T5062] ? do_raw_spin_lock+0x124/0x2b0 [ 54.323713][ T5062] ? rwlock_bug.part.0+0x90/0x90 [ 54.328642][ T5062] ? do_raw_spin_unlock+0x175/0x230 [ 54.333832][ T5062] ? _raw_spin_unlock+0x28/0x40 [ 54.338682][ T5062] nilfs_segctor_construct+0x8e3/0xb30 [ 54.344138][ T5062] ? rcu_read_lock_sched_held+0x3e/0x70 [ 54.349692][ T5062] ? trace_nilfs2_transaction_transition+0x227/0x2e0 [ 54.356644][ T5062] nilfs_detach_log_writer+0x3bf/0x9f0 [ 54.362107][ T5062] ? nilfs_clean_segments+0xa80/0xa80 [ 54.367491][ T5062] ? hook_sb_remount+0xf0/0xf0 [ 54.372514][ T5062] ? prepare_to_wait_exclusive+0x2c0/0x2c0 [ 54.378314][ T5062] ? dispose_list+0x1e0/0x1e0 [ 54.383102][ T5062] nilfs_put_super+0x43/0x1b0 [ 54.387780][ T5062] ? nilfs_freeze+0xc0/0xc0 [ 54.392276][ T5062] generic_shutdown_super+0x158/0x410 [ 54.397661][ T5062] kill_block_super+0x9b/0xf0 [ 54.402417][ T5062] deactivate_locked_super+0x98/0x160 [ 54.407783][ T5062] deactivate_super+0xb1/0xd0 [ 54.412453][ T5062] cleanup_mnt+0x2ae/0x3d0 [ 54.416868][ T5062] task_work_run+0x16f/0x270 [ 54.421458][ T5062] ? task_work_cancel+0x30/0x30 [ 54.426310][ T5062] do_exit+0xaa8/0x2950 [ 54.430465][ T5062] ? lock_downgrade+0x6e0/0x6e0 [ 54.435304][ T5062] ? do_raw_spin_lock+0x124/0x2b0 [ 54.440318][ T5062] ? mm_update_next_owner+0x7b0/0x7b0 [ 54.445773][ T5062] ? rwlock_bug.part.0+0x90/0x90 [ 54.450704][ T5062] ? _raw_spin_unlock_irq+0x23/0x50 [ 54.455897][ T5062] do_group_exit+0xd4/0x2a0 [ 54.460397][ T5062] __x64_sys_exit_group+0x3e/0x50 [ 54.465436][ T5062] do_syscall_64+0x39/0xb0 [ 54.469844][ T5062] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 54.475900][ T5062] RIP: 0033:0x7f3c4c0bc9b9 [ 54.480387][ T5062] Code: Unable to access opcode bytes at 0x7f3c4c0bc98f. [ 54.487562][ T5062] RSP: 002b:00007ffc72e1b868 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 54.495961][ T5062] RAX: ffffffffffffffda RBX: 00007f3c4c132330 RCX: 00007f3c4c0bc9b9 [ 54.503918][ T5062] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 54.511872][ T5062] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00007f3c4c12ce40 [ 54.519831][ T5062] R10: 0000000000000a1a R11: 0000000000000246 R12: 00007f3c4c132330 [ 54.527789][ T5062] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 54.535758][ T5062] [ 54.539319][ T5062] Kernel Offset: disabled [ 54.543692][ T5062] Rebooting in 86400 seconds..