./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4221127091 <...> Warning: Permanently added '10.128.0.51' (ECDSA) to the list of known hosts. execve("./syz-executor4221127091", ["./syz-executor4221127091"], 0x7ffe85de3d40 /* 10 vars */) = 0 brk(NULL) = 0x55555621e000 brk(0x55555621ec40) = 0x55555621ec40 arch_prctl(ARCH_SET_FS, 0x55555621e300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor4221127091", 4096) = 28 brk(0x55555623fc40) = 0x55555623fc40 brk(0x555556240000) = 0x555556240000 mprotect(0x7f9d934c4000, 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=0x55555621e5d0) = 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 7f fa ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 13 f6 ff [ 52.587382][ T1067] RSP: 0018:ffffc9000573f120 EFLAGS: 00010293 [ 52.593477][ T1067] RAX: ffffffff825f0d13 RBX: 0000000000000058 RCX: ffff8880202dd7c0 [ 52.601543][ T1067] RDX: 0000000000000000 RSI: 0000000000000058 RDI: 00000000000000f8 [ 52.611858][ T1067] RBP: ffffc9000573f4d0 R08: ffffffff825f0788 R09: ffffed1005691539 [ 52.619940][ T1067] R10: ffffed1005691539 R11: 1ffff11005691538 R12: dffffc0000000000 [ 52.627981][ T1067] R13: ffffc9000573f1e0 R14: ffffc9000573f180 R15: ffff88802b48a9c0 [ 52.635955][ T1067] FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 52.644920][ T1067] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 52.651633][ T1067] CR2: 00005650f9b21d10 CR3: 000000002c2ba000 CR4: 00000000003506f0 [ 52.659690][ T1067] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 52.669836][ T1067] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 52.677901][ T1067] Call Trace: [ 52.681181][ T1067] [ 52.684108][ T1067] ? hfsplus_get_perms+0x810/0x810 [ 52.689282][ T1067] ? __mutex_lock_common+0x45f/0x26e0 [ 52.694687][ T1067] ? mpage_writepages+0x15c/0x1c0 [ 52.699838][ T1067] ? __mutex_unlock_slowpath+0x222/0x770 [ 52.705519][ T1067] ? hfsplus_ext_write_extent+0x87/0x1e0 [ 52.711459][ T1067] ? mutex_unlock+0x10/0x10 [ 52.715993][ T1067] ? rcu_read_lock_sched_held+0x87/0x110 [ 52.721677][ T1067] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 52.727713][ T1067] ? hfsplus_ext_write_extent+0x177/0x1e0 [ 52.733425][ T1067] ? hfsplus_ext_cmp_key+0x2e0/0x2e0 [ 52.738752][ T1067] ? rcu_read_lock_sched_held+0x87/0x110 [ 52.744450][ T1067] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 52.750497][ T1067] ? hfsplus_write_inode+0x185/0x5c0 [ 52.755805][ T1067] __writeback_single_inode+0x4d6/0x670 [ 52.761438][ T1067] writeback_sb_inodes+0x812/0x1050 [ 52.766656][ T1067] ? __lock_acquire+0x1f60/0x1f60 [ 52.776672][ T1067] ? queue_io+0x400/0x400 [ 52.781065][ T1067] ? queue_io+0x382/0x400 [ 52.785392][ T1067] ? trace_writeback_queue_io+0xe8/0x2d0 [ 52.791081][ T1067] wb_writeback+0x41f/0x7b0 [ 52.795603][ T1067] ? trace_writeback_exec+0x2c0/0x2c0 [ 52.801029][ T1067] ? rcu_read_lock_sched_held+0x87/0x110 [ 52.806672][ T1067] ? do_raw_spin_unlock+0x134/0x8a0 [ 52.811965][ T1067] wb_workfn+0x3cb/0xef0 [ 52.816231][ T1067] ? inode_wait_for_writeback+0x2c0/0x2c0 [ 52.822039][ T1067] ? rcu_read_lock_sched_held+0x87/0x110 [ 52.829760][ T1067] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 52.835778][ T1067] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 52.841751][ T1067] ? do_raw_spin_unlock+0x134/0x8a0 [ 52.846973][ T1067] process_one_work+0x877/0xdb0 [ 52.851908][ T1067] ? worker_detach_from_pool+0x260/0x260 [ 52.857577][ T1067] ? _raw_spin_lock_irq+0xba/0xf0 [ 52.862606][ T1067] ? _raw_spin_lock_irqsave+0x100/0x100 [ 52.868228][ T1067] worker_thread+0xb14/0x1330 [ 52.872931][ T1067] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 52.878915][ T1067] kthread+0x266/0x300 [ 52.883002][ T1067] ? rcu_lock_release+0x20/0x20 [ 52.887942][ T1067] ? kthread_blkcg+0xd0/0xd0 [ 52.892562][ T1067] ret_from_fork+0x1f/0x30 [ 52.897005][ T1067] [ 52.900069][ T1067] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 52.907366][ T1067] CPU: 0 PID: 1067 Comm: kworker/u4:5 Not tainted 6.2.0-rc4-syzkaller #0 [ 52.915763][ T1067] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 52.925805][ T1067] Workqueue: writeback wb_workfn (flush-7:0) [ 52.931781][ T1067] Call Trace: [ 52.935049][ T1067] [ 52.937966][ T1067] dump_stack_lvl+0x1b1/0x290 [ 52.942639][ T1067] ? nf_tcp_handle_invalid+0x630/0x630 [ 52.948084][ T1067] ? panic+0x710/0x710 [ 52.952143][ T1067] ? vscnprintf+0x59/0x80 [ 52.956456][ T1067] ? hfsplus_cat_write_inode+0xb00/0xfe0 [ 52.962078][ T1067] panic+0x2d6/0x710 [ 52.965960][ T1067] ? __warn+0x16d/0x2d0 [ 52.970124][ T1067] ? memcpy_page_flushcache+0x100/0x100 [ 52.975661][ T1067] ? ret_from_fork+0x1f/0x30 [ 52.980239][ T1067] ? hfsplus_cat_write_inode+0xb13/0xfe0 [ 52.985859][ T1067] __warn+0x284/0x2d0 [ 52.989830][ T1067] ? hfsplus_cat_write_inode+0xb13/0xfe0 [ 52.995451][ T1067] report_bug+0x1b3/0x2d0 [ 52.999778][ T1067] handle_bug+0x3d/0x70 [ 53.003933][ T1067] exc_invalid_op+0x16/0x40 [ 53.008430][ T1067] asm_exc_invalid_op+0x16/0x20 [ 53.013274][ T1067] RIP: 0010:hfsplus_cat_write_inode+0xb13/0xfe0 [ 53.019508][ T1067] Code: 00 0f 85 df 04 00 00 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 19 cf 2c ff 0f 0b e9 d1 f7 ff ff e8 0d cf 2c ff <0f> 0b e9 7f fa ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 13 f6 ff [ 53.039102][ T1067] RSP: 0018:ffffc9000573f120 EFLAGS: 00010293 [ 53.045162][ T1067] RAX: ffffffff825f0d13 RBX: 0000000000000058 RCX: ffff8880202dd7c0 [ 53.053124][ T1067] RDX: 0000000000000000 RSI: 0000000000000058 RDI: 00000000000000f8 [ 53.061086][ T1067] RBP: ffffc9000573f4d0 R08: ffffffff825f0788 R09: ffffed1005691539 [ 53.069049][ T1067] R10: ffffed1005691539 R11: 1ffff11005691538 R12: dffffc0000000000 [ 53.077017][ T1067] R13: ffffc9000573f1e0 R14: ffffc9000573f180 R15: ffff88802b48a9c0 [ 53.084985][ T1067] ? hfsplus_cat_write_inode+0x588/0xfe0 [ 53.090610][ T1067] ? hfsplus_cat_write_inode+0xb13/0xfe0 [ 53.096249][ T1067] ? hfsplus_get_perms+0x810/0x810 [ 53.101364][ T1067] ? __mutex_lock_common+0x45f/0x26e0 [ 53.106728][ T1067] ? mpage_writepages+0x15c/0x1c0 [ 53.111752][ T1067] ? __mutex_unlock_slowpath+0x222/0x770 [ 53.117375][ T1067] ? hfsplus_ext_write_extent+0x87/0x1e0 [ 53.123005][ T1067] ? mutex_unlock+0x10/0x10 [ 53.127497][ T1067] ? rcu_read_lock_sched_held+0x87/0x110 [ 53.133121][ T1067] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 53.139104][ T1067] ? hfsplus_ext_write_extent+0x177/0x1e0 [ 53.144821][ T1067] ? hfsplus_ext_cmp_key+0x2e0/0x2e0 [ 53.150108][ T1067] ? rcu_read_lock_sched_held+0x87/0x110 [ 53.155736][ T1067] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 53.161712][ T1067] ? hfsplus_write_inode+0x185/0x5c0 [ 53.167000][ T1067] __writeback_single_inode+0x4d6/0x670 [ 53.172551][ T1067] writeback_sb_inodes+0x812/0x1050 [ 53.177753][ T1067] ? __lock_acquire+0x1f60/0x1f60 [ 53.182795][ T1067] ? queue_io+0x400/0x400 [ 53.187129][ T1067] ? queue_io+0x382/0x400 [ 53.191466][ T1067] ? trace_writeback_queue_io+0xe8/0x2d0 [ 53.197092][ T1067] wb_writeback+0x41f/0x7b0 [ 53.201601][ T1067] ? trace_writeback_exec+0x2c0/0x2c0 [ 53.206969][ T1067] ? rcu_read_lock_sched_held+0x87/0x110 [ 53.212600][ T1067] ? do_raw_spin_unlock+0x134/0x8a0 [ 53.217797][ T1067] wb_workfn+0x3cb/0xef0 [ 53.222046][ T1067] ? inode_wait_for_writeback+0x2c0/0x2c0 [ 53.227770][ T1067] ? rcu_read_lock_sched_held+0x87/0x110 [ 53.233403][ T1067] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 53.239384][ T1067] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 53.245274][ T1067] ? do_raw_spin_unlock+0x134/0x8a0 [ 53.250474][ T1067] process_one_work+0x877/0xdb0 [ 53.255335][ T1067] ? worker_detach_from_pool+0x260/0x260 [ 53.260967][ T1067] ? _raw_spin_lock_irq+0xba/0xf0 [ 53.265987][ T1067] ? _raw_spin_lock_irqsave+0x100/0x100 [ 53.271532][ T1067] worker_thread+0xb14/0x1330 [ 53.276217][ T1067] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 53.282117][ T1067] kthread+0x266/0x300 [ 53.286178][ T1067] ? rcu_lock_release+0x20/0x20 [ 53.291021][ T1067] ? kthread_blkcg+0xd0/0xd0 [ 53.295602][ T1067] ret_from_fork+0x1f/0x30 [ 53.300027][ T1067] [ 53.303190][ T1067] Kernel Offset: disabled [ 53.307571][ T1067] Rebooting in 86400 seconds..