./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4070442210 <...> Warning: Permanently added '10.128.1.109' (ECDSA) to the list of known hosts. execve("./syz-executor4070442210", ["./syz-executor4070442210"], 0x7ffc8ad2e940 /* 10 vars */) = 0 brk(NULL) = 0x5555570cf000 brk(0x5555570cfc40) = 0x5555570cfc40 arch_prctl(ARCH_SET_FS, 0x5555570cf300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor4070442210", 4096) = 28 brk(0x5555570f0c40) = 0x5555570f0c40 brk(0x5555570f1000) = 0x5555570f1000 mprotect(0x7f0c56dd6000, 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 5068 attached , child_tidptr=0x5555570cf5d0) = 5068 [pid 5068] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5068] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5068] setsid() = 1 [pid 5068] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5068] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5068] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5068] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5068] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5068] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5068] unshare(CLONE_NEWNS) = 0 [pid 5068] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5068] unshare(CLONE_NEWIPC) = 0 [pid 5068] unshare(CLONE_NEWCGROUP) = 0 [pid 5068] unshare(CLONE_NEWUTS) = 0 [pid 5068] unshare(CLONE_SYSVSEM) = 0 [pid 5068] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5068] write(3, "16777216", 8) = 8 [pid 5068] close(3) = 0 [pid 5068] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5068] write(3, "536870912", 9) = 9 [pid 5068] close(3) = 0 [pid 5068] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5068] write(3, "1024", 4) = 4 [pid 5068] close(3) = 0 [pid 5068] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5068] write(3, "8192", 4) = 4 [pid 5068] close(3) = 0 [pid 5068] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5068] write(3, "1024", 4) = 4 [pid 5068] close(3) = 0 [pid 5068] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5068] write(3, "1024", 4) = 4 [pid 5068] close(3) = 0 [pid 5068] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5068] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5068] close(3) = 0 [pid 5068] getpid() = 1 [pid 5068] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b e9 85 fa ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 0b f6 ff [ 55.527287][ T2425] RSP: 0018:ffffc9000aa8f160 EFLAGS: 00010293 [ 55.533374][ T2425] RAX: ffffffff825cb8c3 RBX: 0000000000000058 RCX: ffff888027720000 [ 55.541461][ T2425] RDX: 0000000000000000 RSI: 0000000000000058 RDI: 00000000000000f8 [ 55.549519][ T2425] RBP: ffffc9000aa8f510 R08: ffffffff825cb33e R09: ffffed100518a539 [ 55.557556][ T2425] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888028c52a30 [ 55.565538][ T2425] R13: dffffc0000000000 R14: ffffc9000aa8f1c0 R15: ffffc9000aa8f220 [ 55.573604][ T2425] FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 55.582572][ T2425] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 55.589210][ T2425] CR2: 00007f0c56dab408 CR3: 000000000cd30000 CR4: 00000000003506f0 [ 55.597225][ T2425] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 55.605206][ T2425] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 55.613246][ T2425] Call Trace: [ 55.616590][ T2425] [ 55.619532][ T2425] ? hfsplus_get_perms+0x840/0x840 [ 55.624642][ T2425] ? trace_contention_end+0x3c/0xf0 [ 55.629900][ T2425] ? __mutex_lock_common+0x42d/0x2530 [ 55.635326][ T2425] ? __lock_acquire+0x1f80/0x1f80 [ 55.640394][ T2425] ? do_raw_spin_lock+0x14d/0x3a0 [ 55.645433][ T2425] ? hfsplus_write_inode+0x198/0x5e0 [ 55.650794][ T2425] __writeback_single_inode+0x69b/0xfb0 [ 55.656380][ T2425] writeback_sb_inodes+0x8ef/0x11d0 [ 55.661586][ T2425] ? queue_io+0x570/0x570 [ 55.665985][ T2425] ? __writeback_inodes_wb+0x260/0x260 [ 55.671476][ T2425] ? queue_io+0x3d5/0x570 [ 55.675843][ T2425] wb_writeback+0x458/0xc70 [ 55.680562][ T2425] ? rcu_lock_release+0x30/0x30 [ 55.685449][ T2425] ? lockdep_hardirqs_on_prepare+0x43c/0x7a0 [ 55.691538][ T2425] wb_workfn+0x400/0xff0 [ 55.695809][ T2425] ? inode_wait_for_writeback+0x290/0x290 [ 55.701607][ T2425] ? read_lock_is_recursive+0x20/0x20 [ 55.707034][ T2425] ? lockdep_hardirqs_on_prepare+0x43c/0x7a0 [ 55.713097][ T2425] ? print_irqtrace_events+0x220/0x220 [ 55.718654][ T2425] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 55.724567][ T2425] process_one_work+0x8a0/0x10e0 [ 55.729585][ T2425] ? worker_detach_from_pool+0x290/0x290 [ 55.735246][ T2425] ? _raw_spin_lock_irqsave+0x120/0x120 [ 55.740843][ T2425] ? kthread_data+0x52/0xc0 [ 55.745351][ T2425] ? wq_worker_running+0x9b/0x1a0 [ 55.750458][ T2425] worker_thread+0xa63/0x1210 [ 55.755165][ T2425] ? _raw_spin_unlock+0x40/0x40 [ 55.760084][ T2425] kthread+0x270/0x300 [ 55.764159][ T2425] ? pr_cont_work+0x5e0/0x5e0 [ 55.768881][ T2425] ? kthread_blkcg+0xd0/0xd0 [ 55.773479][ T2425] ret_from_fork+0x1f/0x30 [ 55.778009][ T2425] [ 55.781047][ T2425] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 55.788308][ T2425] CPU: 0 PID: 2425 Comm: kworker/u4:6 Not tainted 6.3.0-rc3-syzkaller-00012-g17214b70a159 #0 [ 55.798437][ T2425] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 [ 55.808478][ T2425] Workqueue: writeback wb_workfn (flush-7:0) [ 55.814472][ T2425] Call Trace: [ 55.817737][ T2425] [ 55.820657][ T2425] dump_stack_lvl+0x1e7/0x2d0 [ 55.825322][ T2425] ? nf_tcp_handle_invalid+0x650/0x650 [ 55.830796][ T2425] ? panic+0x770/0x770 [ 55.834851][ T2425] ? vscnprintf+0x5d/0x80 [ 55.839177][ T2425] panic+0x31c/0x770 [ 55.843074][ T2425] ? __warn+0x171/0x4a0 [ 55.847228][ T2425] ? memcpy_page_flushcache+0x100/0x100 [ 55.852864][ T2425] ? ret_from_fork+0x1f/0x30 [ 55.857452][ T2425] __warn+0x314/0x4a0 [ 55.861427][ T2425] ? hfsplus_cat_write_inode+0xb33/0x1000 [ 55.867143][ T2425] report_bug+0x2b3/0x500 [ 55.871465][ T2425] ? hfsplus_cat_write_inode+0xb33/0x1000 [ 55.877290][ T2425] handle_bug+0x3d/0x70 [ 55.881465][ T2425] exc_invalid_op+0x1a/0x50 [ 55.885966][ T2425] asm_exc_invalid_op+0x1a/0x20 [ 55.890816][ T2425] RIP: 0010:hfsplus_cat_write_inode+0xb33/0x1000 [ 55.897140][ T2425] Code: 00 0f 85 e8 04 00 00 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 69 b4 2d ff 0f 0b e9 d4 f7 ff ff e8 5d b4 2d ff <0f> 0b e9 85 fa ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 0b f6 ff [ 55.916740][ T2425] RSP: 0018:ffffc9000aa8f160 EFLAGS: 00010293 [ 55.922814][ T2425] RAX: ffffffff825cb8c3 RBX: 0000000000000058 RCX: ffff888027720000 [ 55.930793][ T2425] RDX: 0000000000000000 RSI: 0000000000000058 RDI: 00000000000000f8 [ 55.938755][ T2425] RBP: ffffc9000aa8f510 R08: ffffffff825cb33e R09: ffffed100518a539 [ 55.946722][ T2425] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888028c52a30 [ 55.954686][ T2425] R13: dffffc0000000000 R14: ffffc9000aa8f1c0 R15: ffffc9000aa8f220 [ 55.962668][ T2425] ? hfsplus_cat_write_inode+0x5ae/0x1000 [ 55.968386][ T2425] ? hfsplus_cat_write_inode+0xb33/0x1000 [ 55.974114][ T2425] ? hfsplus_get_perms+0x840/0x840 [ 55.979222][ T2425] ? trace_contention_end+0x3c/0xf0 [ 55.984419][ T2425] ? __mutex_lock_common+0x42d/0x2530 [ 55.989821][ T2425] ? __lock_acquire+0x1f80/0x1f80 [ 55.994835][ T2425] ? do_raw_spin_lock+0x14d/0x3a0 [ 55.999862][ T2425] ? hfsplus_write_inode+0x198/0x5e0 [ 56.005159][ T2425] __writeback_single_inode+0x69b/0xfb0 [ 56.010711][ T2425] writeback_sb_inodes+0x8ef/0x11d0 [ 56.015936][ T2425] ? queue_io+0x570/0x570 [ 56.020285][ T2425] ? __writeback_inodes_wb+0x260/0x260 [ 56.025747][ T2425] ? queue_io+0x3d5/0x570 [ 56.030077][ T2425] wb_writeback+0x458/0xc70 [ 56.034586][ T2425] ? rcu_lock_release+0x30/0x30 [ 56.039433][ T2425] ? lockdep_hardirqs_on_prepare+0x43c/0x7a0 [ 56.045464][ T2425] wb_workfn+0x400/0xff0 [ 56.049713][ T2425] ? inode_wait_for_writeback+0x290/0x290 [ 56.055433][ T2425] ? read_lock_is_recursive+0x20/0x20 [ 56.060803][ T2425] ? lockdep_hardirqs_on_prepare+0x43c/0x7a0 [ 56.067132][ T2425] ? print_irqtrace_events+0x220/0x220 [ 56.072586][ T2425] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 56.078487][ T2425] process_one_work+0x8a0/0x10e0 [ 56.083455][ T2425] ? worker_detach_from_pool+0x290/0x290 [ 56.089093][ T2425] ? _raw_spin_lock_irqsave+0x120/0x120 [ 56.094631][ T2425] ? kthread_data+0x52/0xc0 [ 56.099128][ T2425] ? wq_worker_running+0x9b/0x1a0 [ 56.104156][ T2425] worker_thread+0xa63/0x1210 [ 56.108835][ T2425] ? _raw_spin_unlock+0x40/0x40 [ 56.113694][ T2425] kthread+0x270/0x300 [ 56.117757][ T2425] ? pr_cont_work+0x5e0/0x5e0 [ 56.122426][ T2425] ? kthread_blkcg+0xd0/0xd0 [ 56.127010][ T2425] ret_from_fork+0x1f/0x30 [ 56.131455][ T2425] [ 56.134628][ T2425] Kernel Offset: disabled [ 56.139031][ T2425] Rebooting in 86400 seconds..