./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor596428450
<...>
Warning: Permanently added '10.128.0.194' (ED25519) to the list of known hosts.
execve("./syz-executor596428450", ["./syz-executor596428450"], 0x7ffc98505920 /* 10 vars */) = 0
brk(NULL) = 0x5555806f5000
brk(0x5555806f5d00) = 0x5555806f5d00
arch_prctl(ARCH_SET_FS, 0x5555806f5380) = 0
set_tid_address(0x5555806f5650) = 5837
set_robust_list(0x5555806f5660, 24) = 0
rseq(0x5555806f5ca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor596428450", 4096) = 27
getrandom("\x54\x79\xd8\xf0\x10\x28\x55\xf3", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x5555806f5d00
brk(0x555580716d00) = 0x555580716d00
brk(0x555580717000) = 0x555580717000
mprotect(0x7f64f1e5a000, 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./strace-static-x86_64: Process 5838 attached
<unfinished ...>
[pid 5838] set_robust_list(0x5555806f5660, 24 <unfinished ...>
[pid 5837] <... clone resumed>, child_tidptr=0x5555806f5650) = 5838
[pid 5838] <... set_robust_list resumed>) = 0
[pid 5838] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5838] setpgid(0, 0) = 0
[pid 5838] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5838] write(3, "1000", 4) = 4
[pid 5838] close(3) = 0
executing program
[pid 5838] write(1, "executing program\n", 18) = 18
[pid 5838] memfd_create("syzkaller", 0) = 3
[pid 5838] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f64e9800000
[pid 5838] 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 5838] munmap(0x7f64e9800000, 138412032) = 0
[pid 5838] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5838] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5838] close(3) = 0
[pid 5838] close(4) = 0
[pid 5838] mkdir("./bus", 0777) = 0
[pid 5838] mount("/dev/loop0", "./bus", "jfs", 0, "") = 0
[pid 5838] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3
[pid 5838] chdir("./bus") = 0
[pid 5838] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 220.608667][ T5838] loop0: detected capacity change from 0 to 32768
[pid 5838] mkdir("./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 <unfinished ...>
[pid 5837] kill(-5838, SIGKILL) = 0
[pid 5837] kill(5838, SIGKILL) = 0
[pid 5837] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid 5837] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0
[pid 5837] getdents64(3, 0x5555806f66f0 /* 2 entries */, 32768) = 48
[pid 5837] getdents64(3, 0x5555806f66f0 /* 0 entries */, 32768) = 0
[pid 5837] close(3) = 0
[ 430.003815][ T30] INFO: task kworker/u8:4:63 blocked for more than 143 seconds.
[ 430.011685][ T30] Not tainted 6.13.0-rc1-syzkaller-00337-g7503345ac5f5 #0
[ 430.020337][ T30] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 430.029560][ T30] task:kworker/u8:4 state:D stack:19640 pid:63 tgid:63 ppid:2 flags:0x00004000
[ 430.040263][ T30] Workqueue: writeback wb_workfn (flush-7:0)
[ 430.046550][ T30] Call Trace:
[ 430.049868][ T30] <TASK>
[ 430.052826][ T30] __schedule+0x17fb/0x4be0
[ 430.057715][ T30] ? __pfx___schedule+0x10/0x10
[ 430.062607][ T30] ? __blk_flush_plug+0x449/0x500
[ 430.067888][ T30] ? __pfx_lock_release+0x10/0x10
[ 430.072943][ T30] ? kthread_data+0x52/0xd0
[ 430.077707][ T30] ? schedule+0x90/0x320
[ 430.081984][ T30] ? wq_worker_sleeping+0x66/0x240
[ 430.087345][ T30] ? schedule+0x90/0x320
[ 430.091622][ T30] schedule+0x14b/0x320
[ 430.096006][ T30] schedule_preempt_disabled+0x13/0x30
[ 430.101493][ T30] __mutex_lock+0x7e7/0xee0
[ 430.106251][ T30] ? __mutex_lock+0x5ef/0xee0
[ 430.110959][ T30] ? jfs_commit_inode+0x24a/0x590
[ 430.116217][ T30] ? __pfx___mutex_lock+0x10/0x10
[ 430.121283][ T30] jfs_commit_inode+0x24a/0x590
[ 430.126366][ T30] ? __pfx_jfs_commit_inode+0x10/0x10
[ 430.131773][ T30] ? do_raw_spin_unlock+0x13c/0x8b0
[ 430.137714][ T30] jfs_write_inode+0x143/0x220
[ 430.142514][ T30] __writeback_single_inode+0x708/0x10d0
[ 430.148398][ T30] writeback_sb_inodes+0x820/0x1360
[ 430.153631][ T30] ? mark_lock+0x2ae/0x360
[ 430.158335][ T30] ? __pfx_writeback_sb_inodes+0x10/0x10
[ 430.164195][ T30] ? __pfx___up_read+0x10/0x10
[ 430.168994][ T30] ? do_raw_spin_lock+0x14f/0x370
[ 430.174372][ T30] __writeback_inodes_wb+0x11b/0x260
[ 430.179703][ T30] wb_writeback+0x427/0xb80
[ 430.184456][ T30] ? queue_io+0x2f1/0x5a0
[ 430.188815][ T30] ? __pfx_wb_writeback+0x10/0x10
[ 430.194087][ T30] wb_workfn+0xc4b/0x1080
[ 430.198462][ T30] ? __pfx_wb_workfn+0x10/0x10
[ 430.203253][ T30] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 430.209497][ T30] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 430.216008][ T30] ? preempt_schedule_thunk+0x1a/0x30
[ 430.221401][ T30] ? process_scheduled_works+0x976/0x1840
[ 430.227343][ T30] process_scheduled_works+0xa66/0x1840
[ 430.232944][ T30] ? __pfx_process_scheduled_works+0x10/0x10
[ 430.239190][ T30] ? assign_work+0x364/0x3d0
[ 430.244447][ T30] worker_thread+0x870/0xd30
[ 430.249074][ T30] ? __kthread_parkme+0x169/0x1d0
[ 430.254355][ T30] ? __pfx_worker_thread+0x10/0x10
[ 430.259499][ T30] kthread+0x2f0/0x390
[ 430.263583][ T30] ? __pfx_worker_thread+0x10/0x10
[ 430.268989][ T30] ? __pfx_kthread+0x10/0x10
[ 430.273606][ T30] ret_from_fork+0x4b/0x80
[ 430.278410][ T30] ? __pfx_kthread+0x10/0x10
[ 430.283034][ T30] ret_from_fork_asm+0x1a/0x30
[ 430.288053][ T30] </TASK>
[ 430.291217][ T30]
[ 430.291217][ T30] Showing all locks held in the system:
[ 430.299234][ T30] 1 lock held by khungtaskd/30:
[ 430.304263][ T30] #0: ffffffff8e937aa0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0
[ 430.314679][ T30] 4 locks held by kworker/u8:4/63:
[ 430.319797][ T30] #0: ffff88801e680948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840
[ 430.331282][ T30] #1: ffffc90001547d00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840
[ 430.343950][ T30] #2: ffff88803298e0e0 (&type->s_umount_key#43){.+.+}-{4:4}, at: super_trylock_shared+0x22/0xf0
[ 430.355271][ T30] #3: ffff888071ddafe0 (&jfs_ip->commit_mutex){+.+.}-{4:4}, at: jfs_commit_inode+0x24a/0x590
[ 430.365969][ T30] 2 locks held by getty/5574:
[ 430.370668][ T30] #0: ffff88814ea500a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
[ 430.380845][ T30] #1: ffffc90002fde2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x6a6/0x1e00
[ 430.391248][ T30] 4 locks held by syz-executor596/5838:
[ 430.397044][ T30]
[ 430.399381][ T30] =============================================
[ 430.399381][ T30]
[ 430.408345][ T30] NMI backtrace for cpu 0
[ 430.412702][ T30] CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc1-syzkaller-00337-g7503345ac5f5 #0
[ 430.423211][ T30] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
[ 430.433273][ T30] Call Trace:
[ 430.436564][ T30] <TASK>
[ 430.439503][ T30] dump_stack_lvl+0x241/0x360
[ 430.444198][ T30] ? __pfx_dump_stack_lvl+0x10/0x10
[ 430.449421][ T30] ? __pfx__printk+0x10/0x10
[ 430.454032][ T30] nmi_cpu_backtrace+0x49c/0x4d0
[ 430.458992][ T30] ? __pfx_nmi_cpu_backtrace+0x10/0x10
[ 430.464472][ T30] ? _printk+0xd5/0x120
[ 430.468641][ T30] ? __pfx__printk+0x10/0x10
[ 430.473242][ T30] ? __wake_up_klogd+0xcc/0x110
[ 430.478110][ T30] ? __pfx__printk+0x10/0x10
[ 430.482717][ T30] ? __rcu_read_unlock+0xa1/0x110
[ 430.487774][ T30] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10
[ 430.493796][ T30] nmi_trigger_cpumask_backtrace+0x198/0x320
[ 430.499807][ T30] watchdog+0xff6/0x1040
[ 430.504066][ T30] ? watchdog+0x1ea/0x1040
[ 430.508538][ T30] ? __pfx_watchdog+0x10/0x10
[ 430.513221][ T30] kthread+0x2f0/0x390
[ 430.517310][ T30] ? __pfx_watchdog+0x10/0x10
[ 430.522053][ T30] ? __pfx_kthread+0x10/0x10
[ 430.526652][ T30] ret_from_fork+0x4b/0x80
[ 430.531072][ T30] ? __pfx_kthread+0x10/0x10
[ 430.535697][ T30] ret_from_fork_asm+0x1a/0x30
[ 430.540508][ T30] </TASK>
[ 430.543701][ T30] Sending NMI from CPU 0 to CPUs 1:
[ 430.548962][ C1] NMI backtrace for cpu 1
[ 430.548978][ C1] CPU: 1 UID: 0 PID: 5838 Comm: syz-executor596 Not tainted 6.13.0-rc1-syzkaller-00337-g7503345ac5f5 #0
[ 430.548998][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
[ 430.549008][ C1] RIP: 0010:dtSplitRoot+0x8c7/0x1930
[ 430.549032][ C1] Code: 88 3b 49 0f be df 0f b6 f3 bf ff 00 00 00 e8 70 f6 69 fe 84 db 78 44 e8 67 f3 69 fe 48 c1 e3 05 4c 01 e3 49 89 dc 49 c1 ec 03 <43> 0f b6 04 2c 84 c0 75 15 44 0f b6 3b 45 84 ff 78 34 e8 42 f3 69
[ 430.549045][ C1] RSP: 0018:ffffc90003eff4a0 EFLAGS: 00000a06
[ 430.549061][ C1] RAX: ffffffff83357e59 RBX: ffff88807492b000 RCX: ffff88807dc08000
[ 430.549074][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000000000ff
[ 430.549084][ C1] RBP: ffffc90003eff690 R08: ffffffff83357e50 R09: 0000000000000000
[ 430.549096][ C1] R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff1100e925600
[ 430.549106][ C1] R13: dffffc0000000000 R14: ffff888071ddb248 R15: 0000000000000000
[ 430.549118][ C1] FS: 00005555806f5380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
[ 430.549132][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 430.549144][ C1] CR2: 0000560734eed680 CR3: 000000007f796000 CR4: 00000000003526f0
[ 430.549158][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 430.549167][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 430.549178][ C1] Call Trace:
[ 430.549186][ C1] <NMI>
[ 430.549193][ C1] ? nmi_cpu_backtrace+0x3c2/0x4d0
[ 430.549212][ C1] ? __pfx_lock_acquire+0x10/0x10
[ 430.549232][ C1] ? __pfx_nmi_cpu_backtrace+0x10/0x10
[ 430.549250][ C1] ? nmi_handle+0x2a/0x5a0
[ 430.549274][ C1] ? nmi_cpu_backtrace_handler+0xc/0x20
[ 430.549297][ C1] ? nmi_handle+0x14f/0x5a0
[ 430.549314][ C1] ? nmi_handle+0x2a/0x5a0
[ 430.549331][ C1] ? dtSplitRoot+0x8c7/0x1930
[ 430.549348][ C1] ? default_do_nmi+0x63/0x160
[ 430.549366][ C1] ? exc_nmi+0x123/0x1f0
[ 430.549382][ C1] ? end_repeat_nmi+0xf/0x53
[ 430.549404][ C1] ? dtSplitRoot+0x8b0/0x1930
[ 430.549421][ C1] ? dtSplitRoot+0x8b9/0x1930
[ 430.549438][ C1] ? dtSplitRoot+0x8c7/0x1930
[ 430.549456][ C1] ? dtSplitRoot+0x8c7/0x1930
[ 430.549473][ C1] ? dtSplitRoot+0x8c7/0x1930
[ 430.549491][ C1] </NMI>
[ 430.549496][ C1] <TASK>
[ 430.549514][ C1] ? __pfx_dtSplitRoot+0x10/0x10
[ 430.549531][ C1] ? __pfx_dbAlloc+0x10/0x10
[ 430.549547][ C1] ? __kasan_kmalloc+0x98/0xb0
[ 430.549570][ C1] ? __kmalloc_cache_noprof+0x243/0x390
[ 430.549588][ C1] ? dtInsert+0x857/0x6c10
[ 430.549605][ C1] dtInsert+0x12cd/0x6c10
[ 430.549638][ C1] ? __pfx_dtInsert+0x10/0x10
[ 430.549656][ C1] ? __pfx_lock_acquire+0x10/0x10
[ 430.549672][ C1] ? txLock+0x2b8/0x1f40
[ 430.549693][ C1] ? __pfx_lock_release+0x10/0x10
[ 430.549708][ C1] ? do_raw_spin_lock+0x14f/0x370
[ 430.549734][ C1] ? do_raw_spin_unlock+0x13c/0x8b0
[ 430.549775][ C1] ? dtInitRoot+0x234/0x6a0
[ 430.549793][ C1] jfs_mkdir+0x7fb/0xba0
[ 430.549816][ C1] ? __pfx_jfs_mkdir+0x10/0x10
[ 430.549851][ C1] ? bpf_lsm_inode_mkdir+0x9/0x10
[ 430.549870][ C1] ? security_inode_mkdir+0xbe/0x340
[ 430.549887][ C1] vfs_mkdir+0x2f9/0x4f0
[ 430.549913][ C1] do_mkdirat+0x264/0x3a0
[ 430.549934][ C1] ? __phys_addr_symbol+0x2f/0x70
[ 430.549949][ C1] ? __check_object_size+0x48e/0x900
[ 430.549968][ C1] ? __pfx_do_mkdirat+0x10/0x10
[ 430.549990][ C1] ? strncpy_from_user+0x152/0x270
[ 430.550016][ C1] ? getname_flags+0x1e3/0x540
[ 430.550035][ C1] __x64_sys_mkdir+0x6c/0x80
[ 430.550059][ C1] do_syscall_64+0xf3/0x230
[ 430.550082][ C1] ? clear_bhb_loop+0x35/0x90
[ 430.550097][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 430.550121][ C1] RIP: 0033:0x7f64f1de0a59
[ 430.550201][ C1] 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
[ 430.550214][ C1] RSP: 002b:00007fffb68f4128 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
[ 430.550231][ C1] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f64f1de0a59
[ 430.550242][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100
[ 430.550252][ C1] RBP: 00007f64f1e5a5f0 R08: 000000000000618e R09: 00005555806f64c0
[ 430.550263][ C1] R10: 00007fffb68f3ff0 R11: 0000000000000246 R12: 00007fffb68f4150
[ 430.550274][ C1] R13: 00007fffb68f4378 R14: 431bde82d7b634db R15: 00007f64f1e2903b
[ 430.550293][ C1] </TASK>
[ 430.550301][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.339 msecs
[ 430.994274][ T30] Kernel panic - not syncing: hung_task: blocked tasks
[ 431.001136][ T30] CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc1-syzkaller-00337-g7503345ac5f5 #0
[ 431.011645][ T30] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
[ 431.021707][ T30] Call Trace:
[ 431.025002][ T30] <TASK>
[ 431.027945][ T30] dump_stack_lvl+0x241/0x360
[ 431.032643][ T30] ? __pfx_dump_stack_lvl+0x10/0x10
[ 431.037854][ T30] ? __pfx__printk+0x10/0x10
[ 431.042457][ T30] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 431.048456][ T30] ? vscnprintf+0x5d/0x90
[ 431.052833][ T30] panic+0x349/0x880
[ 431.056745][ T30] ? nmi_trigger_cpumask_backtrace+0x244/0x320
[ 431.062912][ T30] ? __pfx_panic+0x10/0x10
[ 431.067346][ T30] ? tick_nohz_tick_stopped+0x82/0xb0
[ 431.072738][ T30] ? __irq_work_queue_local+0x137/0x410
[ 431.078294][ T30] ? preempt_schedule_thunk+0x1a/0x30
[ 431.083676][ T30] ? nmi_trigger_cpumask_backtrace+0x244/0x320
[ 431.089839][ T30] ? nmi_trigger_cpumask_backtrace+0x2d4/0x320
[ 431.096003][ T30] ? nmi_trigger_cpumask_backtrace+0x2d9/0x320
[ 431.102170][ T30] watchdog+0x1035/0x1040
[ 431.106511][ T30] ? watchdog+0x1ea/0x1040
[ 431.110939][ T30] ? __pfx_watchdog+0x10/0x10
[ 431.115631][ T30] kthread+0x2f0/0x390
[ 431.119796][ T30] ? __pfx_watchdog+0x10/0x10
[ 431.124481][ T30] ? __pfx_kthread+0x10/0x10
[ 431.129080][ T30] ret_from_fork+0x4b/0x80
[ 431.133782][ T30] ? __pfx_kthread+0x10/0x10
[ 431.138444][ T30] ret_from_fork_asm+0x1a/0x30
[ 431.143255][ T30] </TASK>
[ 431.146452][ T30] Kernel Offset: disabled
[ 431.150883][ T30] Rebooting in 86400 seconds..