Warning: Permanently added '10.128.1.193' (ED25519) to the list of known hosts. executing program [ 175.525332][ T5647] loop0: detected capacity change from 0 to 32768 [ 175.550348][ T5647] gfs2: fsid=(œ[{{{+: Trying to join cluster "lock_nolock", "(œ[{{{+" [ 175.567864][ T5647] gfs2: fsid=(œ[{{{+: Now mounting FS (format 0)... [ 175.607947][ T5647] gfs2: fsid=(œ[{{{+.0: journal 0 mapped with 22 extents in 0ms [ 175.618968][ T10] gfs2: fsid=(œ[{{{+.0: jid=0, already locked for use [ 175.626732][ T10] gfs2: fsid=(œ[{{{+.0: jid=0: Looking at journal... [ 175.722800][ T10] gfs2: fsid=(œ[{{{+.0: jid=0: Journal head lookup took 96ms [ 175.730804][ T10] gfs2: fsid=(œ[{{{+.0: jid=0: Done [ 175.737091][ T5647] gfs2: fsid=(œ[{{{+.0: first mount done, others may mount [ 429.174917][ T31] INFO: task syz-executor243:5646 blocked for more than 143 seconds. [ 429.183619][ T31] Not tainted syzkaller #0 [ 429.188621][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 429.197348][ T31] task:syz-executor243 state:D stack:25928 pid:5646 tgid:5646 ppid:5645 task_flags:0x400100 flags:0x00080000 [ 429.209460][ T31] Call Trace: [ 429.212750][ T31] [ 429.215729][ T31] __schedule+0x1295/0x67a0 [ 429.220304][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 429.226056][ T31] ? __pfx___schedule+0x10/0x10 [ 429.230946][ T31] ? find_held_lock+0x2b/0x80 [ 429.235710][ T31] ? schedule+0x2bf/0x390 [ 429.240083][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 429.245795][ T31] schedule+0xdd/0x390 [ 429.249929][ T31] bit_wait+0xd/0xe0 [ 429.253880][ T31] __wait_on_bit+0x65/0x180 [ 429.258581][ T31] ? __pfx_bit_wait+0x10/0x10 [ 429.263371][ T31] out_of_line_wait_on_bit+0xdc/0x110 [ 429.268877][ T31] ? __pfx_out_of_line_wait_on_bit+0x10/0x10 [ 429.274985][ T31] ? __pfx_wake_bit_function+0x10/0x10 [ 429.280471][ T31] gfs2_glock_wait+0xe7/0x330 [ 429.285242][ T31] ? __pfx_gfs2_glock_wait+0x10/0x10 [ 429.290587][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 429.296336][ T31] gfs2_glock_nq+0xa03/0x14f0 [ 429.301070][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 429.306780][ T31] __gfs2_lookup+0x118/0x2a0 [ 429.311411][ T31] ? __pfx___gfs2_lookup+0x10/0x10 [ 429.316585][ T31] ? __pfx_d_alloc_parallel+0x10/0x10 [ 429.322014][ T31] ? __lookup_slow+0x251/0x460 [ 429.326874][ T31] ? lockdep_init_map_type+0x5c/0x250 [ 429.332290][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 429.338107][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 429.343812][ T31] ? lockdep_init_map_type+0x5c/0x250 [ 429.349287][ T31] __lookup_slow+0x251/0x460 [ 429.353919][ T31] ? __pfx___lookup_slow+0x10/0x10 [ 429.359096][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 429.364803][ T31] ? __d_lookup+0x266/0x4a0 [ 429.369363][ T31] lookup_slow+0x50/0x70 [ 429.373615][ T31] path_lookupat+0x5e8/0xc40 [ 429.378280][ T31] filename_lookup+0x202/0x590 [ 429.383104][ T31] ? __pfx_filename_lookup+0x10/0x10 [ 429.388509][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 429.394179][ T31] ? strncpy_from_user+0x19d/0x2d0 [ 429.399346][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 429.405045][ T31] user_path_at+0x3c/0x60 [ 429.409400][ T31] __x64_sys_umount+0x10a/0x1a0 [ 429.414258][ T31] ? __pfx___x64_sys_umount+0x10/0x10 [ 429.419674][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 429.425366][ T31] ? rcu_is_watching+0x12/0xc0 [ 429.430154][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 429.435838][ T31] do_syscall_64+0x10b/0xf80 [ 429.440490][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 429.446483][ T31] RIP: 0033:0x7f025767a2b7 [ 429.450915][ T31] RSP: 002b:00007fff711ca258 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 429.459407][ T31] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f025767a2b7 [ 429.467438][ T31] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff711ca310 [ 429.475461][ T31] RBP: 00007fff711ca310 R08: 00007fff711cb310 R09: 00000000ffffffff [ 429.483452][ T31] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fff711cb400 [ 429.491502][ T31] R13: 000055558f1e27f0 R14: 000055558f1d13d8 R15: 00007fff711cd580 [ 429.499560][ T31] [ 429.502584][ T31] [ 429.502584][ T31] Showing all locks held in the system: [ 429.510391][ T31] 1 lock held by khungtaskd/31: [ 429.515292][ T31] #0: ffffffff8e7e54e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x3d/0x184 [ 429.525293][ T31] 2 locks held by getty/5375: [ 429.529980][ T31] #0: ffff888037f580a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 [ 429.539831][ T31] #1: ffffc900032332e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x419/0x14f0 [ 429.550086][ T31] 1 lock held by syz-executor243/5646: [ 429.555581][ T31] #0: ffff88807789ae18 (&type->i_mutex_dir_key#6){.+.+}-{4:4}, at: lookup_slow+0x42/0x70 [ 429.565776][ T31] [ 429.568109][ T31] ============================================= [ 429.568109][ T31] [ 429.576580][ T31] NMI backtrace for cpu 0 [ 429.576603][ T31] CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) [ 429.576643][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 429.576665][ T31] Call Trace: [ 429.576679][ T31] [ 429.576694][ T31] dump_stack_lvl+0x100/0x190 [ 429.576742][ T31] nmi_cpu_backtrace.cold+0x12d/0x151 [ 429.576789][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 429.576833][ T31] nmi_trigger_cpumask_backtrace+0x1d7/0x230 [ 429.576883][ T31] sys_info+0x141/0x190 [ 429.576918][ T31] watchdog+0xcb1/0x1030 [ 429.576998][ T31] ? _raw_spin_unlock_irqrestore+0x52/0x80 [ 429.577053][ T31] ? __pfx_watchdog+0x10/0x10 [ 429.577093][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 429.577143][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 429.577190][ T31] ? __kthread_parkme+0x18c/0x230 [ 429.577259][ T31] ? kthread+0x13a/0x450 [ 429.577301][ T31] ? __pfx_watchdog+0x10/0x10 [ 429.577342][ T31] kthread+0x370/0x450 [ 429.577384][ T31] ? __pfx_kthread+0x10/0x10 [ 429.577431][ T31] ret_from_fork+0x72b/0xd50 [ 429.577482][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 429.577532][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 429.577580][ T31] ? __switch_to+0x800/0x1100 [ 429.577638][ T31] ? __switch_to_asm+0x39/0x70 [ 429.577693][ T31] ? __pfx_kthread+0x10/0x10 [ 429.577740][ T31] ret_from_fork_asm+0x1a/0x30 [ 429.577815][ T31] [ 429.577829][ T31] Sending NMI from CPU 0 to CPUs 1: [ 429.724638][ C1] NMI backtrace for cpu 1 [ 429.724663][ C1] CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted syzkaller #0 PREEMPT(full) [ 429.724701][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 429.724721][ C1] RIP: 0010:irqentry_enter+0x20/0x130 [ 429.724779][ C1] Code: 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6 55 53 f6 87 88 00 00 00 03 75 47 65 48 8b 05 a1 ad 81 08 48 8b 7c 24 10 f6 40 2c 02 <75> 17 e8 59 fb ff ff 90 66 90 e8 d1 95 87 f6 90 31 c0 5b 5d e9 72 [ 429.724811][ C1] RSP: 0018:ffffc90000197d18 EFLAGS: 00000002 [ 429.724836][ C1] RAX: ffff88801e688000 RBX: ffffc90000197d48 RCX: ffffffff8100178a [ 429.724859][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8b89322e [ 429.724880][ C1] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 429.724899][ C1] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 429.724919][ C1] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 429.724941][ C1] FS: 0000000000000000(0000) GS:ffff888124471000(0000) knlGS:0000000000000000 [ 429.724970][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 429.724991][ C1] CR2: 0000555e97f0f660 CR3: 000000000e596000 CR4: 0000000000350ef0 [ 429.725013][ C1] Call Trace: [ 429.725024][ C1] [ 429.725038][ C1] sysvec_call_function_single+0xe/0xc0 [ 429.725087][ C1] asm_sysvec_call_function_single+0x1a/0x20 [ 429.725126][ C1] RIP: 0010:pv_native_safe_halt+0xf/0x20 [ 429.725176][ C1] Code: e6 93 02 e9 ae 08 87 f5 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d e3 40 22 00 fb f4 87 08 87 f5 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 [ 429.725212][ C1] RSP: 0018:ffffc90000197df0 EFLAGS: 00000246 [ 429.725237][ C1] RAX: 000000000006a635 RBX: ffff88801e688000 RCX: ffffffff8b895095 [ 429.725258][ C1] RDX: 0000000000000000 RSI: ffffffff8df1ee30 RDI: ffffffff8c1c3880 [ 429.725279][ C1] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed10170a67b5 [ 429.725300][ C1] R10: ffff8880b8533dab R11: 0000000000000000 R12: 0000000000000001 [ 429.725320][ C1] R13: ffffed1003cd1000 R14: 0000000000000001 R15: ffffffff90d7dd50 [ 429.725348][ C1] ? ct_kernel_exit+0x125/0x180 [ 429.725404][ C1] default_idle+0x9/0x10 [ 429.725434][ C1] default_idle_call+0x6c/0xb0 [ 429.725467][ C1] do_idle+0x464/0x590 [ 429.725521][ C1] ? __pfx_do_idle+0x10/0x10 [ 429.725573][ C1] ? do_idle+0x13/0x590 [ 429.725627][ C1] cpu_startup_entry+0x4f/0x60 [ 429.725680][ C1] start_secondary+0x21d/0x2d0 [ 429.725716][ C1] ? __pfx_start_secondary+0x10/0x10 [ 429.725757][ C1] common_startup_64+0x13e/0x148 [ 429.725815][ C1] [ 429.725828][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.190 msecs [ 429.726637][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 429.726660][ T31] CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) [ 429.726702][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 429.726724][ T31] Call Trace: [ 429.726738][ T31] [ 429.726752][ T31] dump_stack_lvl+0x100/0x190 [ 429.726797][ T31] vpanic+0x552/0x970 [ 429.726834][ T31] ? __pfx_vpanic+0x10/0x10 [ 429.726871][ T31] ? nmi_trigger_cpumask_backtrace+0x182/0x230 [ 429.726918][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 429.726968][ T31] ? rcu_is_watching+0x12/0xc0 [ 429.727024][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 429.727077][ T31] panic+0xd1/0xe0 [ 429.727113][ T31] ? __pfx_panic+0x10/0x10 [ 429.727153][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 429.727198][ T31] ? wq_watchdog_touch+0xec/0x1a0 [ 429.727241][ T31] ? nmi_trigger_cpumask_backtrace+0x1be/0x230 [ 429.727286][ T31] ? watchdog.cold+0x1ec/0x234 [ 429.727328][ T31] ? watchdog+0xcc1/0x1030 [ 429.727373][ T31] watchdog.cold+0x1fd/0x234 [ 429.727426][ T31] ? _raw_spin_unlock_irqrestore+0x52/0x80 [ 429.727481][ T31] ? __pfx_watchdog+0x10/0x10 [ 429.727525][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 429.727573][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 429.727618][ T31] ? __kthread_parkme+0x18c/0x230 [ 429.727684][ T31] ? kthread+0x13a/0x450 [ 429.727729][ T31] ? __pfx_watchdog+0x10/0x10 [ 429.727772][ T31] kthread+0x370/0x450 [ 429.727814][ T31] ? __pfx_kthread+0x10/0x10 [ 429.727860][ T31] ret_from_fork+0x72b/0xd50 [ 429.727909][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 429.727961][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 429.728006][ T31] ? __switch_to+0x800/0x1100 [ 429.728061][ T31] ? __switch_to_asm+0x39/0x70 [ 429.728116][ T31] ? __pfx_kthread+0x10/0x10 [ 429.728161][ T31] ret_from_fork_asm+0x1a/0x30 [ 429.728236][ T31] [ 430.177003][ T31] Kernel Offset: disabled [ 430.181318][ T31] Rebooting in 86400 seconds..