./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3097557533 <...> DUID 00:04:e6:d8:3e:4c:c1:15:84:42:dc:00:60:8c:e3:5f:26:b4 forked to background, child pid 3208 [ 31.311736][ T3209] 8021q: adding VLAN 0 to HW filter on device bond0 [ 31.320999][ T3209] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.109' (ECDSA) to the list of known hosts. execve("./syz-executor3097557533", ["./syz-executor3097557533"], 0x7ffc024582b0 /* 10 vars */) = 0 brk(NULL) = 0x555556fae000 brk(0x555556faec40) = 0x555556faec40 arch_prctl(ARCH_SET_FS, 0x555556fae300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor3097557533", 4096) = 28 brk(0x555556fcfc40) = 0x555556fcfc40 brk(0x555556fd0000) = 0x555556fd0000 mprotect(0x7f8107abc000, 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 3636 attached , child_tidptr=0x555556fae5d0) = 3636 [pid 3636] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 3636] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3636] setsid() = 1 [pid 3636] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 3636] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 3636] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 3636] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 3636] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 3636] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 3636] unshare(CLONE_NEWNS) = 0 [pid 3636] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 3636] unshare(CLONE_NEWIPC) = 0 [pid 3636] unshare(CLONE_NEWCGROUP) = 0 [pid 3636] unshare(CLONE_NEWUTS) = 0 [pid 3636] unshare(CLONE_SYSVSEM) = 0 [pid 3636] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3636] write(3, "16777216", 8) = 8 [pid 3636] close(3) = 0 [pid 3636] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 3636] write(3, "536870912", 9) = 9 [pid 3636] close(3) = 0 [pid 3636] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3636] write(3, "1024", 4) = 4 [pid 3636] close(3) = 0 [pid 3636] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3636] write(3, "8192", 4) = 4 [pid 3636] close(3) = 0 [pid 3636] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3636] write(3, "1024", 4) = 4 [pid 3636] close(3) = 0 [pid 3636] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 3636] write(3, "1024", 4) = 4 [pid 3636] close(3) = 0 [pid 3636] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 3636] write(3, "1024 1048576 500 1024", 21) = 21 [pid 3636] close(3) = 0 [pid 3636] getpid() = 1 [pid 3636] 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 [ 53.892407][ T102] RSP: 0018:ffffc90001597120 EFLAGS: 00010293 [ 53.898497][ T102] RAX: ffffffff825aff33 RBX: 0000000000000058 RCX: ffff88801935ba80 [ 53.906599][ T102] RDX: 0000000000000000 RSI: 0000000000000058 RDI: 00000000000000f8 [ 53.914657][ T102] RBP: ffffc900015974d0 R08: ffffffff825af9a8 R09: ffffed100f677461 [ 53.922708][ T102] R10: ffffed100f677461 R11: 1ffff1100f677460 R12: dffffc0000000000 [ 53.930733][ T102] R13: ffffc900015971e0 R14: ffffc90001597180 R15: ffff88807b3ba300 [ 53.938723][ T102] FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 53.948007][ T102] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 53.954765][ T102] CR2: 00005608cdc98058 CR3: 00000000282c6000 CR4: 00000000003506f0 [ 53.962840][ T102] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 53.971009][ T102] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 53.979019][ T102] Call Trace: [ 53.982442][ T102] [ 53.985408][ T102] ? hfsplus_get_perms+0x7d0/0x7d0 [ 53.990636][ T102] ? __mutex_lock_common+0x45f/0x26e0 [ 53.996044][ T102] ? mpage_writepages+0x15c/0x1c0 [ 54.001225][ T102] ? __mutex_unlock_slowpath+0x222/0x770 [ 54.006898][ T102] ? hfsplus_ext_write_extent+0x87/0x1e0 [ 54.012645][ T102] ? mutex_unlock+0x10/0x10 [ 54.017272][ T102] ? rcu_read_lock_sched_held+0x87/0x110 [ 54.023036][ T102] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 54.029045][ T102] ? hfsplus_ext_write_extent+0x177/0x1e0 [ 54.034853][ T102] ? hfsplus_ext_cmp_key+0x2e0/0x2e0 [ 54.040263][ T102] ? rcu_read_lock_sched_held+0x87/0x110 [ 54.046085][ T102] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 54.052252][ T102] ? hfsplus_write_inode+0x185/0x5c0 [ 54.057674][ T102] __writeback_single_inode+0x4d6/0x670 [ 54.063374][ T102] writeback_sb_inodes+0xb3b/0x18f0 [ 54.068629][ T102] ? __lock_acquire+0x1f60/0x1f60 [ 54.073894][ T102] ? move_expired_inodes+0x889/0x8e0 [ 54.079270][ T102] ? queue_io+0x400/0x400 [ 54.083743][ T102] ? queue_io+0x382/0x400 [ 54.088163][ T102] ? trace_writeback_queue_io+0xe8/0x2d0 [ 54.093910][ T102] wb_writeback+0x41f/0x7b0 [ 54.098451][ T102] ? trace_writeback_exec+0x2c0/0x2c0 [ 54.104086][ T102] ? rcu_read_lock_sched_held+0x87/0x110 [ 54.109738][ T102] ? do_raw_spin_unlock+0x134/0x8a0 [ 54.115133][ T102] wb_workfn+0x3cb/0xef0 [ 54.119405][ T102] ? inode_wait_for_writeback+0x2c0/0x2c0 [ 54.125222][ T102] ? rcu_read_lock_sched_held+0x87/0x110 [ 54.130985][ T102] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 54.137022][ T102] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 54.143146][ T102] ? do_raw_spin_unlock+0x134/0x8a0 [ 54.148362][ T102] process_one_work+0x877/0xdb0 [ 54.153299][ T102] ? worker_detach_from_pool+0x260/0x260 [ 54.158964][ T102] ? _raw_spin_lock_irq+0xba/0xf0 [ 54.164133][ T102] ? _raw_spin_lock_irqsave+0x100/0x100 [ 54.169697][ T102] worker_thread+0xb14/0x1330 [ 54.174456][ T102] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 54.180371][ T102] kthread+0x266/0x300 [ 54.184548][ T102] ? rcu_lock_release+0x20/0x20 [ 54.189407][ T102] ? kthread_blkcg+0xd0/0xd0 [ 54.194179][ T102] ret_from_fork+0x1f/0x30 [ 54.198840][ T102] [ 54.201974][ T102] Kernel panic - not syncing: panic_on_warn set ... [ 54.208569][ T102] CPU: 0 PID: 102 Comm: kworker/u4:4 Not tainted 6.1.0-rc6-syzkaller-00308-g644e9524388a #0 [ 54.218618][ T102] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 54.228868][ T102] Workqueue: writeback wb_workfn (flush-7:0) [ 54.234870][ T102] Call Trace: [ 54.238147][ T102] [ 54.241074][ T102] dump_stack_lvl+0x1b1/0x28e [ 54.245744][ T102] ? nf_tcp_handle_invalid+0x62e/0x62e [ 54.251190][ T102] ? panic+0x710/0x710 [ 54.255253][ T102] ? vscnprintf+0x59/0x80 [ 54.259570][ T102] ? hfsplus_cat_write_inode+0xae0/0xfe0 [ 54.265209][ T102] panic+0x2d6/0x710 [ 54.269106][ T102] ? __warn+0x131/0x220 [ 54.273298][ T102] ? memcpy_page_flushcache+0xfc/0xfc [ 54.278678][ T102] ? ret_from_fork+0x1f/0x30 [ 54.283270][ T102] ? hfsplus_cat_write_inode+0xb13/0xfe0 [ 54.288892][ T102] __warn+0x1fa/0x220 [ 54.292863][ T102] ? hfsplus_cat_write_inode+0xb13/0xfe0 [ 54.299019][ T102] report_bug+0x1b3/0x2d0 [ 54.303357][ T102] handle_bug+0x3d/0x70 [ 54.307517][ T102] exc_invalid_op+0x16/0x40 [ 54.312021][ T102] asm_exc_invalid_op+0x16/0x20 [ 54.316872][ T102] RIP: 0010:hfsplus_cat_write_inode+0xb13/0xfe0 [ 54.323137][ T102] 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 89 98 2f ff 0f 0b e9 d1 f7 ff ff e8 7d 98 2f ff <0f> 0b e9 7f fa ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 13 f6 ff [ 54.342779][ T102] RSP: 0018:ffffc90001597120 EFLAGS: 00010293 [ 54.348855][ T102] RAX: ffffffff825aff33 RBX: 0000000000000058 RCX: ffff88801935ba80 [ 54.356826][ T102] RDX: 0000000000000000 RSI: 0000000000000058 RDI: 00000000000000f8 [ 54.364802][ T102] RBP: ffffc900015974d0 R08: ffffffff825af9a8 R09: ffffed100f677461 [ 54.372956][ T102] R10: ffffed100f677461 R11: 1ffff1100f677460 R12: dffffc0000000000 [ 54.380926][ T102] R13: ffffc900015971e0 R14: ffffc90001597180 R15: ffff88807b3ba300 [ 54.388939][ T102] ? hfsplus_cat_write_inode+0x588/0xfe0 [ 54.394576][ T102] ? hfsplus_cat_write_inode+0xb13/0xfe0 [ 54.400219][ T102] ? hfsplus_get_perms+0x7d0/0x7d0 [ 54.405343][ T102] ? __mutex_lock_common+0x45f/0x26e0 [ 54.410713][ T102] ? mpage_writepages+0x15c/0x1c0 [ 54.415766][ T102] ? __mutex_unlock_slowpath+0x222/0x770 [ 54.421430][ T102] ? hfsplus_ext_write_extent+0x87/0x1e0 [ 54.427075][ T102] ? mutex_unlock+0x10/0x10 [ 54.431580][ T102] ? rcu_read_lock_sched_held+0x87/0x110 [ 54.437216][ T102] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 54.443229][ T102] ? hfsplus_ext_write_extent+0x177/0x1e0 [ 54.448988][ T102] ? hfsplus_ext_cmp_key+0x2e0/0x2e0 [ 54.454313][ T102] ? rcu_read_lock_sched_held+0x87/0x110 [ 54.459979][ T102] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 54.465976][ T102] ? hfsplus_write_inode+0x185/0x5c0 [ 54.471286][ T102] __writeback_single_inode+0x4d6/0x670 [ 54.476863][ T102] writeback_sb_inodes+0xb3b/0x18f0 [ 54.482082][ T102] ? __lock_acquire+0x1f60/0x1f60 [ 54.487134][ T102] ? move_expired_inodes+0x889/0x8e0 [ 54.492447][ T102] ? queue_io+0x400/0x400 [ 54.496832][ T102] ? queue_io+0x382/0x400 [ 54.501199][ T102] ? trace_writeback_queue_io+0xe8/0x2d0 [ 54.506945][ T102] wb_writeback+0x41f/0x7b0 [ 54.511474][ T102] ? trace_writeback_exec+0x2c0/0x2c0 [ 54.516858][ T102] ? rcu_read_lock_sched_held+0x87/0x110 [ 54.522525][ T102] ? do_raw_spin_unlock+0x134/0x8a0 [ 54.527731][ T102] wb_workfn+0x3cb/0xef0 [ 54.532082][ T102] ? inode_wait_for_writeback+0x2c0/0x2c0 [ 54.537819][ T102] ? rcu_read_lock_sched_held+0x87/0x110 [ 54.543534][ T102] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 54.549530][ T102] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 54.555431][ T102] ? do_raw_spin_unlock+0x134/0x8a0 [ 54.560637][ T102] process_one_work+0x877/0xdb0 [ 54.565500][ T102] ? worker_detach_from_pool+0x260/0x260 [ 54.571133][ T102] ? _raw_spin_lock_irq+0xba/0xf0 [ 54.576340][ T102] ? _raw_spin_lock_irqsave+0x100/0x100 [ 54.581894][ T102] worker_thread+0xb14/0x1330 [ 54.586678][ T102] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 54.592596][ T102] kthread+0x266/0x300 [ 54.596659][ T102] ? rcu_lock_release+0x20/0x20 [ 54.601593][ T102] ? kthread_blkcg+0xd0/0xd0 [ 54.606529][ T102] ret_from_fork+0x1f/0x30 [ 54.610974][ T102] [ 54.614147][ T102] Kernel Offset: disabled [ 54.618569][ T102] Rebooting in 86400 seconds..