./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1086237273 <...> Warning: Permanently added '10.128.0.149' (ED25519) to the list of known hosts. execve("./syz-executor1086237273", ["./syz-executor1086237273"], 0x7ffd75b8a490 /* 10 vars */) = 0 brk(NULL) = 0x55557f422000 brk(0x55557f422d00) = 0x55557f422d00 arch_prctl(ARCH_SET_FS, 0x55557f422380) = 0 set_tid_address(0x55557f422650) = 5843 set_robust_list(0x55557f422660, 24) = 0 rseq(0x55557f422ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1086237273", 4096) = 28 getrandom("\x3a\x7c\x4a\x00\x7a\xe1\x9e\x9b", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557f422d00 brk(0x55557f443d00) = 0x55557f443d00 brk(0x55557f444000) = 0x55557f444000 mprotect(0x7f86cca97000, 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 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557f422650) = 5844 ./strace-static-x86_64: Process 5844 attached [pid 5844] set_robust_list(0x55557f422660, 24) = 0 [pid 5844] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5844] setpgid(0, 0) = 0 [pid 5844] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5844] write(3, "1000", 4) = 4 [pid 5844] close(3) = 0 executing program [pid 5844] write(1, "executing program\n", 18) = 18 [pid 5844] memfd_create("syzkaller", 0) = 3 [pid 5844] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c4400000 [pid 5844] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5844] munmap(0x7f86c4400000, 138412032) = 0 [pid 5844] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5844] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5844] close(3) = 0 [pid 5844] close(4) = 0 [pid 5844] mkdir("./bus", 0777) = 0 [pid 5844] mount("/dev/loop0", "./bus", "jfs", MS_NODEV|MS_I_VERSION|MS_LAZYTIME, "") = 0 [pid 5844] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5844] chdir("./bus") = 0 [pid 5844] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 278.531860][ T5844] loop0: detected capacity change from 0 to 32768 [pid 5844] rename("./file0", "./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5843] kill(-5844, SIGKILL) = 0 [pid 5843] kill(5844, SIGKILL) = 0 [pid 5843] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5843] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5843] getdents64(3, 0x55557f4236f0 /* 2 entries */, 32768) = 48 [pid 5843] getdents64(3, 0x55557f4236f0 /* 0 entries */, 32768) = 0 [pid 5843] close(3) = 0 [ 429.976000][ T30] INFO: task kworker/u8:10:3513 blocked for more than 143 seconds. [ 429.984062][ T30] Not tainted 6.13.0-rc4-syzkaller-00012-g9b2ffa6148b1 #0 [ 429.992437][ T30] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 430.001750][ T30] task:kworker/u8:10 state:D stack:22288 pid:3513 tgid:3513 ppid:2 flags:0x00004000 [ 430.012211][ T30] Workqueue: writeback wb_workfn (flush-7:0) [ 430.018533][ T30] Call Trace: [ 430.021827][ T30] [ 430.024772][ T30] __schedule+0x17fb/0x4be0 [ 430.029559][ T30] ? __pfx___schedule+0x10/0x10 [ 430.034433][ T30] ? __blk_flush_plug+0x449/0x500 [ 430.039964][ T30] ? __pfx_lock_release+0x10/0x10 [ 430.045024][ T30] ? kthread_data+0x52/0xd0 [ 430.049868][ T30] ? schedule+0x90/0x320 [ 430.054135][ T30] ? wq_worker_sleeping+0x66/0x240 [ 430.059657][ T30] ? schedule+0x90/0x320 [ 430.063921][ T30] schedule+0x14b/0x320 [ 430.068453][ T30] schedule_preempt_disabled+0x13/0x30 [ 430.073932][ T30] __mutex_lock+0x7e7/0xee0 [ 430.078835][ T30] ? __mutex_lock+0x5ef/0xee0 [ 430.083546][ T30] ? jfs_commit_inode+0x24a/0x590 [ 430.088934][ T30] ? __pfx___mutex_lock+0x10/0x10 [ 430.094003][ T30] jfs_commit_inode+0x24a/0x590 [ 430.099246][ T30] ? __pfx_jfs_commit_inode+0x10/0x10 [ 430.104646][ T30] ? do_raw_spin_unlock+0x13c/0x8b0 [ 430.110778][ T30] jfs_write_inode+0x143/0x220 [ 430.115576][ T30] __writeback_single_inode+0x708/0x10d0 [ 430.121640][ T30] writeback_sb_inodes+0x820/0x1360 [ 430.127191][ T30] ? mark_lock+0x2ae/0x360 [ 430.131675][ T30] ? __pfx_writeback_sb_inodes+0x10/0x10 [ 430.137770][ T30] ? __pfx___up_read+0x10/0x10 [ 430.142571][ T30] ? do_raw_spin_lock+0x14f/0x370 [ 430.147936][ T30] __writeback_inodes_wb+0x11b/0x260 [ 430.153263][ T30] wb_writeback+0x427/0xb80 [ 430.158192][ T30] ? queue_io+0x2e1/0x5a0 [ 430.162547][ T30] ? __pfx_wb_writeback+0x10/0x10 [ 430.167967][ T30] wb_workfn+0xc4b/0x1080 [ 430.172342][ T30] ? __pfx_wb_workfn+0x10/0x10 [ 430.177526][ T30] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 430.183530][ T30] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 430.190426][ T30] ? process_scheduled_works+0x976/0x1840 [ 430.196570][ T30] process_scheduled_works+0xa66/0x1840 [ 430.202180][ T30] ? __pfx_process_scheduled_works+0x10/0x10 [ 430.208574][ T30] ? assign_work+0x364/0x3d0 [ 430.213203][ T30] worker_thread+0x870/0xd30 [ 430.218720][ T30] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 430.224674][ T30] ? __kthread_parkme+0x169/0x1d0 [ 430.230202][ T30] ? __pfx_worker_thread+0x10/0x10 [ 430.235346][ T30] kthread+0x2f0/0x390 [ 430.239829][ T30] ? __pfx_worker_thread+0x10/0x10 [ 430.244967][ T30] ? __pfx_kthread+0x10/0x10 [ 430.249994][ T30] ret_from_fork+0x4b/0x80 [ 430.254437][ T30] ? __pfx_kthread+0x10/0x10 [ 430.259733][ T30] ret_from_fork_asm+0x1a/0x30 [ 430.264544][ T30] [ 430.267858][ T30] [ 430.267858][ T30] Showing all locks held in the system: [ 430.275584][ T30] 1 lock held by khungtaskd/30: [ 430.280929][ T30] #0: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 [ 430.291134][ T30] 4 locks held by kworker/u8:10/3513: [ 430.296771][ T30] #0: ffff8880206b4148 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 [ 430.308283][ T30] #1: ffffc9000c18fd00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 [ 430.321079][ T30] #2: ffff88807f3740e0 (&type->s_umount_key#43){.+.+}-{4:4}, at: super_trylock_shared+0x22/0xf0 [ 430.332412][ T30] #3: ffff8880739c2fe0 (&jfs_ip->commit_mutex){+.+.}-{4:4}, at: jfs_commit_inode+0x24a/0x590 [ 430.343017][ T30] 2 locks held by getty/5577: [ 430.347954][ T30] #0: ffff8880353620a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 430.357994][ T30] #1: ffffc90002fde2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x6a6/0x1e00 [ 430.368370][ T30] 4 locks held by syz-executor108/5844: [ 430.373926][ T30] [ 430.376616][ T30] ============================================= [ 430.376616][ T30] [ 430.385074][ T30] NMI backtrace for cpu 1 [ 430.389424][ T30] CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc4-syzkaller-00012-g9b2ffa6148b1 #0 [ 430.399933][ T30] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 430.410002][ T30] Call Trace: [ 430.413298][ T30] [ 430.416244][ T30] dump_stack_lvl+0x241/0x360 [ 430.420943][ T30] ? __pfx_dump_stack_lvl+0x10/0x10 [ 430.426161][ T30] ? __pfx__printk+0x10/0x10 [ 430.430773][ T30] nmi_cpu_backtrace+0x49c/0x4d0 [ 430.435724][ T30] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 430.441195][ T30] ? _printk+0xd5/0x120 [ 430.445357][ T30] ? __pfx__printk+0x10/0x10 [ 430.449963][ T30] ? __wake_up_klogd+0xcc/0x110 [ 430.454837][ T30] ? __pfx__printk+0x10/0x10 [ 430.459440][ T30] ? __rcu_read_unlock+0xa1/0x110 [ 430.464474][ T30] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 430.470476][ T30] nmi_trigger_cpumask_backtrace+0x198/0x320 [ 430.476477][ T30] watchdog+0xff6/0x1040 [ 430.480737][ T30] ? watchdog+0x1ea/0x1040 [ 430.485165][ T30] ? __pfx_watchdog+0x10/0x10 [ 430.489857][ T30] kthread+0x2f0/0x390 [ 430.493937][ T30] ? __pfx_watchdog+0x10/0x10 [ 430.498622][ T30] ? __pfx_kthread+0x10/0x10 [ 430.503221][ T30] ret_from_fork+0x4b/0x80 [ 430.507643][ T30] ? __pfx_kthread+0x10/0x10 [ 430.512243][ T30] ret_from_fork_asm+0x1a/0x30 [ 430.517035][ T30] [ 430.520171][ T30] Sending NMI from CPU 1 to CPUs 0: [ 430.525401][ C0] NMI backtrace for cpu 0 [ 430.525418][ C0] CPU: 0 UID: 0 PID: 5844 Comm: syz-executor108 Not tainted 6.13.0-rc4-syzkaller-00012-g9b2ffa6148b1 #0 [ 430.525438][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 430.525451][ C0] RIP: 0010:__sanitizer_cov_trace_pc+0x5d/0x70 [ 430.525471][ C0] Code: f8 15 00 00 83 fa 02 75 21 48 8b 91 00 16 00 00 48 8b 32 48 8d 7e 01 8b 89 fc 15 00 00 48 39 cf 73 08 48 89 3a 48 89 44 f2 08 cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90 90 90 [ 430.525485][ C0] RSP: 0018:ffffc9000407f138 EFLAGS: 00000293 [ 430.525500][ C0] RAX: ffffffff832f5a6e RBX: ffff888034af9000 RCX: ffff88807dcc3c00 [ 430.525513][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000000000ff [ 430.525523][ C0] RBP: ffffc9000407f330 R08: ffffffff832f5a40 R09: 0000000000000000 [ 430.525535][ C0] R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff1100695f200 [ 430.525546][ C0] R13: dffffc0000000000 R14: ffff8880739c3248 R15: 0000000000000000 [ 430.525558][ C0] FS: 000055557f422380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 [ 430.525572][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 430.525584][ C0] CR2: 00007ffd2adb0398 CR3: 0000000074a02000 CR4: 00000000003526f0 [ 430.525598][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 430.525608][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 430.525618][ C0] Call Trace: [ 430.525625][ C0] [ 430.525632][ C0] ? nmi_cpu_backtrace+0x3c2/0x4d0 [ 430.525650][ C0] ? __pfx_lock_acquire+0x10/0x10 [ 430.525669][ C0] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 430.525687][ C0] ? nmi_handle+0x2a/0x5a0 [ 430.525711][ C0] ? nmi_cpu_backtrace_handler+0xc/0x20 [ 430.525734][ C0] ? nmi_handle+0x14f/0x5a0 [ 430.525753][ C0] ? nmi_handle+0x2a/0x5a0 [ 430.525772][ C0] ? __sanitizer_cov_trace_pc+0x5d/0x70 [ 430.525787][ C0] ? default_do_nmi+0x63/0x160 [ 430.525805][ C0] ? exc_nmi+0x123/0x1f0 [ 430.525821][ C0] ? end_repeat_nmi+0xf/0x53 [ 430.525838][ C0] ? dtSplitRoot+0x8b0/0x1930 [ 430.525858][ C0] ? dtSplitRoot+0x8de/0x1930 [ 430.525878][ C0] ? __sanitizer_cov_trace_pc+0x5d/0x70 [ 430.525894][ C0] ? __sanitizer_cov_trace_pc+0x5d/0x70 [ 430.525911][ C0] ? __sanitizer_cov_trace_pc+0x5d/0x70 [ 430.525926][ C0] [ 430.525932][ C0] [ 430.525937][ C0] dtSplitRoot+0x8de/0x1930 [ 430.525969][ C0] ? __pfx_dtSplitRoot+0x10/0x10 [ 430.525989][ C0] ? __pfx_dbAlloc+0x10/0x10 [ 430.526007][ C0] ? __kasan_kmalloc+0x98/0xb0 [ 430.526030][ C0] ? __kmalloc_cache_noprof+0x243/0x390 [ 430.526045][ C0] ? dtInsert+0x857/0x6c10 [ 430.526066][ C0] dtInsert+0x12cd/0x6c10 [ 430.526088][ C0] ? kasan_save_track+0x51/0x80 [ 430.526107][ C0] ? kasan_save_free_info+0x40/0x50 [ 430.526126][ C0] ? __x64_sys_rename+0x82/0x90 [ 430.526155][ C0] ? mark_lock+0x9a/0x360 [ 430.526173][ C0] ? __pfx_dtInsert+0x10/0x10 [ 430.526192][ C0] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 430.526210][ C0] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 430.526230][ C0] ? kasan_quarantine_put+0xdc/0x230 [ 430.526256][ C0] ? lockdep_hardirqs_on+0x99/0x150 [ 430.526278][ C0] ? dtSearch+0x1d59/0x2520 [ 430.526297][ C0] ? kfree+0x196/0x430 [ 430.526319][ C0] ? dtSearch+0x1d59/0x2520 [ 430.526355][ C0] jfs_rename+0xafe/0x1bf0 [ 430.526382][ C0] ? __pfx_jfs_rename+0x10/0x10 [ 430.526421][ C0] ? do_raw_spin_unlock+0x13c/0x8b0 [ 430.526443][ C0] ? __asan_memcpy+0x40/0x70 [ 430.526462][ C0] ? __pfx_jfs_rename+0x10/0x10 [ 430.526485][ C0] vfs_rename+0xbdb/0xf00 [ 430.526512][ C0] ? __pfx_vfs_rename+0x10/0x10 [ 430.526537][ C0] ? bpf_lsm_path_rename+0x9/0x10 [ 430.526558][ C0] do_renameat2+0xd94/0x13f0 [ 430.526591][ C0] ? __pfx_do_renameat2+0x10/0x10 [ 430.526617][ C0] ? __virt_addr_valid+0x183/0x530 [ 430.526634][ C0] ? __virt_addr_valid+0x45f/0x530 [ 430.526652][ C0] ? __phys_addr_symbol+0x2f/0x70 [ 430.526672][ C0] ? strncpy_from_user+0x152/0x270 [ 430.526697][ C0] ? getname_flags+0x1e3/0x540 [ 430.526714][ C0] __x64_sys_rename+0x82/0x90 [ 430.526736][ C0] do_syscall_64+0xf3/0x230 [ 430.526760][ C0] ? clear_bhb_loop+0x35/0x90 [ 430.526776][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 430.526799][ C0] RIP: 0033:0x7f86cca1da59 [ 430.526822][ C0] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 430.526834][ C0] RSP: 002b:00007ffc56ee43c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 [ 430.526851][ C0] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f86cca1da59 [ 430.526862][ C0] RDX: 0000000000000000 RSI: 0000000020000f40 RDI: 00000000200003c0 [ 430.526873][ C0] RBP: 00007f86cca975f0 R08: 000000000000618e R09: 000055557f4234c0 [ 430.526884][ C0] R10: 00007ffc56ee4290 R11: 0000000000000246 R12: 00007ffc56ee43f0 [ 430.526895][ C0] R13: 00007ffc56ee4618 R14: 431bde82d7b634db R15: 00007f86cca6603b [ 430.526914][ C0] [ 430.526922][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.521 msecs [ 431.023369][ T30] Kernel panic - not syncing: hung_task: blocked tasks [ 431.030238][ T30] CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc4-syzkaller-00012-g9b2ffa6148b1 #0 [ 431.040751][ T30] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 431.050802][ T30] Call Trace: [ 431.054076][ T30] [ 431.057001][ T30] dump_stack_lvl+0x241/0x360 [ 431.061680][ T30] ? __pfx_dump_stack_lvl+0x10/0x10 [ 431.066874][ T30] ? __pfx__printk+0x10/0x10 [ 431.071456][ T30] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 431.077439][ T30] ? vscnprintf+0x5d/0x90 [ 431.081769][ T30] panic+0x349/0x880 [ 431.085663][ T30] ? nmi_trigger_cpumask_backtrace+0x244/0x320 [ 431.091809][ T30] ? __pfx_panic+0x10/0x10 [ 431.096221][ T30] ? tick_nohz_tick_stopped+0x82/0xb0 [ 431.101598][ T30] ? __irq_work_queue_local+0x137/0x410 [ 431.107140][ T30] ? preempt_schedule_thunk+0x1a/0x30 [ 431.112505][ T30] ? nmi_trigger_cpumask_backtrace+0x244/0x320 [ 431.118655][ T30] ? nmi_trigger_cpumask_backtrace+0x2d4/0x320 [ 431.124804][ T30] ? nmi_trigger_cpumask_backtrace+0x2d9/0x320 [ 431.130953][ T30] watchdog+0x1035/0x1040 [ 431.135279][ T30] ? watchdog+0x1ea/0x1040 [ 431.139693][ T30] ? __pfx_watchdog+0x10/0x10 [ 431.144362][ T30] kthread+0x2f0/0x390 [ 431.148425][ T30] ? __pfx_watchdog+0x10/0x10 [ 431.153111][ T30] ? __pfx_kthread+0x10/0x10 [ 431.157709][ T30] ret_from_fork+0x4b/0x80 [ 431.162120][ T30] ? __pfx_kthread+0x10/0x10 [ 431.166705][ T30] ret_from_fork_asm+0x1a/0x30 [ 431.171479][ T30] [ 431.174738][ T30] Kernel Offset: disabled [ 431.179080][ T30] Rebooting in 86400 seconds..