Warning: Permanently added '10.128.0.140' (ED25519) to the list of known hosts. executing program [ 160.994132][ T5842] loop0: detected capacity change from 0 to 32768 [ 161.063671][ T5842] bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=metadata_checksum=none,data_checksum=none,compression=lz4,nojournal_transaction_names,version_upgrade=none [ 161.081021][ T5842] bcachefs (loop0): recovering from clean shutdown, journal seq 13 [ 161.105280][ T5842] bcachefs (loop0): accounting_read... done [ 161.112224][ T5842] bcachefs (loop0): alloc_read... done [ 161.117859][ T5842] bcachefs (loop0): stripes_read... done [ 161.123617][ T5842] bcachefs (loop0): snapshots_read... done [ 161.131970][ T5842] bcachefs (loop0): going read-write [ 161.139681][ T5842] bcachefs (loop0): journal_replay... done [ 161.145558][ T5842] bcachefs (loop0): resume_logged_ops... done [ 161.152362][ T5842] bcachefs (loop0): delete_dead_inodes... done executing program [ 161.161439][ T5842] bcachefs (loop0): done starting filesystem executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 191.519170][ T5852] Allocator stuck? Waited for 30 seconds [ 191.519217][ T5852] Allocator debug: [ 191.519228][ T5852] capacity1536 [ 191.519238][ T5852] reserved 31232 [ 191.519248][ T5852] hidden 0 [ 191.519258][ T5852] btree 0 [ 191.519269][ T5852] data 0 [ 191.519279][ T5852] cached 0 [ 191.519289][ T5852] reserved 0 [ 191.519300][ T5852] online_reserved 0 [ 191.519310][ T5852] nr_inodes 0 [ 191.519320][ T5852] [ 191.519329][ T5852] freelist_wait waiting [ 191.519340][ T5852] open buckets allocated1 [ 191.519350][ T5852] open buckets total 1024 [ 191.519361][ T5852] open_buckets_wait empty [ 191.519371][ T5852] open_buckets_btree 0 [ 191.519381][ T5852] open_buckets_user 0 [ 191.519392][ T5852] btree reserve cache 0 [ 191.519402][ T5852] [ 191.519410][ T5852] Dev 0: [ 191.519420][ T5852] buckets sectors fragmented [ 191.519433][ T5852] free 0 0 0 [ 191.519452][ T5852] sb 0 0 0 [ 191.519464][ T5852] journal 0 0 0 [ 191.519476][ T5852] btree 0 0 0 [ 191.519489][ T5852] user 0 0 0 [ 191.519500][ T5852] cached 0 0 0 [ 191.519512][ T5852] parity 0 0 0 [ 191.519525][ T5852] stripe 0 0 0 [ 191.519536][ T5852] need_gc_gens 0 0 0 [ 191.519549][ T5852] need_discard 0 0 0 [ 191.519561][ T5852] unstriped 0 0 0 [ 191.519572][ T5852] capacity 128 [ 191.519583][ T5852] [ 191.519592][ T5852] reserves: [ 191.519601][ T5852] stripe 60 [ 191.519612][ T5852] normal 58 [ 191.519623][ T5852] copygc 56 [ 191.519633][ T5852] btree 28 [ 191.519644][ T5852] btree_copygc 0 [ 191.519654][ T5852] reclaim 0 [ 191.519664][ T5852] interior_updates 0 [ 191.519675][ T5852] [ 191.519684][ T5852] open buckets 0 [ 191.519694][ T5852] buckets to invalidate 0 [ 191.519705][ T5852] [ 191.519714][ T5852] Copygc debug: [ 191.519723][ T5852] running: 1 [ 191.519733][ T5852] copygc_wait:0 [ 191.519743][ T5852] copygc_wait_at:0 [ 191.519753][ T5852] Currently waiting for:0 B [ 191.519763][ T5852] Currently waiting since:640 KiB [ 191.519774][ T5852] Currently calculated wait:0 B [ 191.519784][ T5852] [ 191.519793][ T5852] Journal debug: [ 191.519804][ T5852] flags: replay_done,running,may_skip_flush,need_flush_write [ 191.519816][ T5852] dirty journal entries: 0/32768 [ 191.519827][ T5852] seq: 13 [ 191.519838][ T5852] seq_ondisk: 13 [ 191.519848][ T5852] last_seq: 14 [ 191.519858][ T5852] last_seq_ondisk: 14 [ 191.519869][ T5852] flushed_seq_ondisk: 13 [ 191.519879][ T5852] watermark: stripe [ 191.519890][ T5852] each entry reserved: 321 [ 191.519901][ T5852] nr flush writes: 0 [ 191.519911][ T5852] nr noflush writes: 0 [ 191.519921][ T5852] average write size: 0 B executing program [ 191.519932][ T5852] nr direct reclaim: 0 [ 191.519942][ T5852] nr background reclaim: 0 [ 191.519952][ T5852] reclaim kicked: 0 [ 191.519963][ T5852] reclaim runs in: 0 ms [ 191.519985][ T5852] blocked: 0 [ 191.519995][ T5852] current entry sectors: 256 [ 191.520006][ T5852] current entry error: ok [ 191.520016][ T5852] current entry: closed [ 191.520026][ T5852] unwritten entries: [ 191.520036][ T5852] last buf closed [ 191.520045][ T5852] space: [ 191.520054][ T5852] discarded 256:1792 [ 191.520065][ T5852] clean ondisk 256:1792 [ 191.520075][ T5852] clean 256:1792 [ 191.520086][ T5852] total 256:2048 [ 191.520096][ T5852] dev 0: [ 191.520105][ T5852] durability 1: [ 191.520114][ T5852] nr 8 [ 191.520125][ T5852] bucket size 256 [ 191.520135][ T5852] available 6:256 [ 191.520145][ T5852] discard_idx 0 [ 191.520155][ T5852] dirty_ondisk 0 (seq 0) [ 191.520182][ T5852] dirty_idx 0 (seq 0) [ 191.520191][ T5852] cur_idx 0 (seq 0) [ 191.520202][ T5852] replicas want 1 need 1 [ 191.520211][ T5852] executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 430.868608][ T31] INFO: task bch-copygc/loop:5852 blocked for more than 143 seconds. [ 430.877942][ T31] Not tainted 6.14.0-rc7-syzkaller-00202-g183601b78a9b #0 [ 430.887574][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 430.898601][ T31] task:bch-copygc/loop state:D stack:18736 pid:5852 tgid:5852 ppid:2 task_flags:0x240040 flags:0x00004000 [ 430.911465][ T31] Call Trace: [ 430.914825][ T31] [ 430.917800][ T31] __schedule+0x18bc/0x4c40 [ 430.923356][ T31] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 430.929929][ T31] ? __pfx___schedule+0x10/0x10 [ 430.934982][ T31] ? __pfx_lock_release+0x10/0x10 [ 430.940577][ T31] ? bch2_print_allocator_stuck+0x165/0xcb0 [ 430.947094][ T31] ? bch2_print_allocator_stuck+0xc24/0xcb0 [ 430.953583][ T31] ? schedule+0x90/0x320 [ 430.958013][ T31] schedule+0x14b/0x320 [ 430.962900][ T31] __closure_sync+0x259/0x2f0 [ 430.967681][ T31] ? __closure_sync+0x149/0x2f0 [ 430.973225][ T31] ? __pfx___closure_sync+0x10/0x10 [ 430.978880][ T31] ? __bch2_wait_on_allocator+0x1d6/0x250 [ 430.985102][ T31] __bch2_write+0x5376/0x5a80 [ 430.991026][ T31] ? __pfx___might_resched+0x10/0x10 [ 430.996544][ T31] ? __pfx___bch2_write+0x10/0x10 [ 431.002341][ T31] ? __bch2_read_extent+0x2e99/0x4bf0 [ 431.008019][ T31] ? __pfx___bch2_read_extent+0x10/0x10 [ 431.014389][ T31] bch2_write+0x865/0x1660 [ 431.019395][ T31] ? __pfx_bch2_write+0x10/0x10 [ 431.024335][ T31] ? bch2_trans_srcu_unlock+0x441/0x5c0 [ 431.030738][ T31] ? bch2_data_update_read_done+0xfd/0x330 [ 431.036647][ T31] bch2_data_update_read_done+0x22e/0x330 [ 431.043188][ T31] ? __pfx_bch2_data_update_read_done+0x10/0x10 [ 431.049937][ T31] ? bch2_trans_srcu_unlock+0x450/0x5c0 [ 431.055712][ T31] bch2_moving_ctxt_do_pending_writes+0x44c/0x8d0 [ 431.062829][ T31] ? __pfx_bch2_moving_ctxt_do_pending_writes+0x10/0x10 [ 431.070305][ T31] bch2_move_ratelimit+0x76c/0xeb0 [ 431.075505][ T31] ? __pfx_bch2_move_ratelimit+0x10/0x10 [ 431.081936][ T31] ? bch2_backpointer_get_key+0x302/0x570 [ 431.087744][ T31] ? bch2_path_put+0xe1d/0x2290 [ 431.093333][ T31] ? bch2_btree_iter_advance+0x372/0x870 [ 431.100185][ T31] bch2_evacuate_bucket+0xfe9/0x3280 [ 431.105698][ T31] ? bch2_evacuate_bucket+0x2f6/0x3280 [ 431.112407][ T31] ? __pfx_bch2_evacuate_bucket+0x10/0x10 executing program [ 431.118726][ T31] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 431.124795][ T31] ? register_lock_class+0x102/0x980 [ 431.130684][ T31] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 431.136922][ T31] ? stack_trace_save+0x118/0x1d0 [ 431.142504][ T31] ? bch2_backpointer_get_key+0x229/0x570 [ 431.148568][ T31] ? __lock_acquire+0x1397/0x2100 [ 431.153680][ T31] ? bch2_evacuate_bucket+0x2f6/0x3280 [ 431.159620][ T31] ? mark_lock+0x9a/0x360 [ 431.164054][ T31] ? __pfx_lock_release+0x10/0x10 [ 431.169579][ T31] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 431.175657][ T31] bch2_copygc+0x415d/0x4fa0 [ 431.187869][ T31] ? bch2_copygc+0x483/0x4fa0 [ 431.192940][ T31] ? __pfx_bch2_copygc+0x10/0x10 [ 431.197955][ T31] ? __pfx_lock_acquire+0x10/0x10 [ 431.203391][ T31] ? __pfx_lock_release+0x10/0x10 [ 431.208728][ T31] ? bch2_copygc+0x483/0x4fa0 [ 431.213466][ T31] ? bch2_copygc_wait_amount+0xc90/0xcf0 [ 431.219622][ T31] ? bch2_copygc+0x483/0x4fa0 [ 431.224389][ T31] ? bch2_trans_srcu_unlock+0x450/0x5c0 [ 431.230344][ T31] bch2_copygc_thread+0x6ef/0xba0 [ 431.235462][ T31] ? __pfx_bch2_copygc_thread+0x10/0x10 [ 431.241394][ T31] ? bch2_copygc_thread+0x1ae/0xba0 [ 431.246709][ T31] ? _raw_spin_unlock_irqrestore+0x8f/0x140 [ 431.252981][ T31] ? lockdep_hardirqs_on+0x99/0x150 [ 431.258705][ T31] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 431.264704][ T31] ? __kthread_parkme+0x169/0x1d0 [ 431.270137][ T31] ? __pfx_bch2_copygc_thread+0x10/0x10 [ 431.275864][ T31] kthread+0x7a9/0x920 [ 431.280370][ T31] ? __pfx_kthread+0x10/0x10 [ 431.285083][ T31] ? __pfx_bch2_copygc_thread+0x10/0x10 [ 431.291004][ T31] ? __pfx_kthread+0x10/0x10 [ 431.295669][ T31] ? __pfx_kthread+0x10/0x10 [ 431.300684][ T31] ? __pfx_kthread+0x10/0x10 [ 431.305361][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 431.310955][ T31] ? lockdep_hardirqs_on+0x99/0x150 [ 431.316239][ T31] ? __pfx_kthread+0x10/0x10 [ 431.321279][ T31] ret_from_fork+0x4b/0x80 [ 431.325774][ T31] ? __pfx_kthread+0x10/0x10 [ 431.330907][ T31] ret_from_fork_asm+0x1a/0x30 [ 431.335769][ T31] [ 431.339357][ T31] [ 431.339357][ T31] Showing all locks held in the system: [ 431.347153][ T31] 1 lock held by khungtaskd/31: [ 431.352451][ T31] #0: ffffffff8eb393e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 [ 431.364351][ T31] 2 locks held by getty/5593: [ 431.369402][ T31] #0: ffff888035a980a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 431.380820][ T31] #1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x616/0x1770 [ 431.391476][ T31] 2 locks held by syz-executor408/6984: [ 431.397171][ T31] [ 431.399920][ T31] ============================================= [ 431.399920][ T31] [ 431.408882][ T31] NMI backtrace for cpu 1 [ 431.408916][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.14.0-rc7-syzkaller-00202-g183601b78a9b #0 [ 431.408941][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 431.408956][ T31] Call Trace: [ 431.408965][ T31] [ 431.408975][ T31] dump_stack_lvl+0x241/0x360 [ 431.409013][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 431.409037][ T31] ? __pfx__printk+0x10/0x10 [ 431.409087][ T31] nmi_cpu_backtrace+0x49c/0x4d0 [ 431.409126][ T31] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 431.409166][ T31] ? _printk+0xd5/0x120 [ 431.409200][ T31] ? __pfx__printk+0x10/0x10 [ 431.409235][ T31] ? __wake_up_klogd+0xcc/0x110 [ 431.409265][ T31] ? __pfx__printk+0x10/0x10 [ 431.409301][ T31] ? __rcu_read_unlock+0xa1/0x110 [ 431.409334][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 431.409366][ T31] nmi_trigger_cpumask_backtrace+0x198/0x320 [ 431.409401][ T31] watchdog+0x1058/0x10a0 [ 431.409437][ T31] ? watchdog+0x1ea/0x10a0 [ 431.409476][ T31] ? __pfx_watchdog+0x10/0x10 [ 431.409509][ T31] kthread+0x7a9/0x920 [ 431.409542][ T31] ? __pfx_kthread+0x10/0x10 [ 431.409578][ T31] ? __pfx_watchdog+0x10/0x10 [ 431.409612][ T31] ? __pfx_kthread+0x10/0x10 [ 431.409644][ T31] ? __pfx_kthread+0x10/0x10 [ 431.409682][ T31] ? __pfx_kthread+0x10/0x10 [ 431.409713][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 431.409744][ T31] ? lockdep_hardirqs_on+0x99/0x150 [ 431.409777][ T31] ? __pfx_kthread+0x10/0x10 [ 431.409812][ T31] ret_from_fork+0x4b/0x80 [ 431.409842][ T31] ? __pfx_kthread+0x10/0x10 [ 431.409876][ T31] ret_from_fork_asm+0x1a/0x30 [ 431.409938][ T31] [ 431.409947][ T31] Sending NMI from CPU 1 to CPUs 0: [ 431.580930][ C0] NMI backtrace for cpu 0 [ 431.580954][ C0] CPU: 0 UID: 0 PID: 6984 Comm: syz-executor408 Not tainted 6.14.0-rc7-syzkaller-00202-g183601b78a9b #0 [ 431.580977][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 431.580989][ C0] RIP: 0010:check_preemption_disabled+0x2/0x120 [ 431.581020][ C0] Code: 2c 80 8c 48 c7 c6 c0 2c 80 8c eb 1c 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 57 <41> 56 41 54 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24 [ 431.581034][ C0] RSP: 0018:ffffc9000ecef570 EFLAGS: 00000046 [ 431.581052][ C0] RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffff888079891e00 [ 431.581064][ C0] RDX: ffff888079891e00 RSI: ffffffff8c2ac600 RDI: ffffffff8c802ce0 [ 431.581077][ C0] RBP: 0000000000000001 R08: ffffffff81fac5f4 R09: 1ffffffff2077a2e [ 431.581089][ C0] R10: dffffc0000000000 R11: fffffbfff2077a2f R12: 0000000000000246 [ 431.581101][ C0] R13: ffff888079891e00 R14: 00000000ffffffff R15: ffff88807a870a48 [ 431.581114][ C0] FS: 0000555567901380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 [ 431.581129][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 431.581140][ C0] CR2: 00007f86c8472290 CR3: 0000000032e4e000 CR4: 00000000003526f0 [ 431.581156][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 431.581166][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 431.581176][ C0] Call Trace: [ 431.581183][ C0] [ 431.581190][ C0] ? nmi_cpu_backtrace+0x3c2/0x4d0 [ 431.581215][ C0] ? __pfx_lock_acquire+0x10/0x10 [ 431.581253][ C0] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 431.581281][ C0] ? nmi_cpu_backtrace_handler+0xc/0x20 [ 431.581303][ C0] ? nmi_handle+0x14f/0x5a0 [ 431.581329][ C0] ? nmi_handle+0x2a/0x5a0 [ 431.581352][ C0] ? check_preemption_disabled+0x2/0x120 [ 431.581368][ C0] ? default_do_nmi+0x63/0x160 [ 431.581391][ C0] ? exc_nmi+0x123/0x1f0 [ 431.581409][ C0] ? end_repeat_nmi+0xf/0x53 [ 431.581440][ C0] ? xas_reload+0xe4/0x470 [ 431.581466][ C0] ? check_preemption_disabled+0x2/0x120 [ 431.581483][ C0] ? check_preemption_disabled+0x2/0x120 [ 431.581500][ C0] ? check_preemption_disabled+0x2/0x120 [ 431.581516][ C0] [ 431.581522][ C0] [ 431.581528][ C0] lock_is_held_type+0x101/0x190 [ 431.581555][ C0] xas_reload+0xfd/0x470 [ 431.581579][ C0] find_lock_entries+0x2d4/0xbb0 [ 431.581603][ C0] ? find_lock_entries+0x1b2/0xbb0 [ 431.581630][ C0] ? __pfx_find_lock_entries+0x10/0x10 [ 431.581657][ C0] ? folio_batch_remove_exceptionals+0x18a/0x1f0 [ 431.581688][ C0] shmem_undo_range+0x2d4/0x1820 [ 431.581718][ C0] ? __pfx_shmem_undo_range+0x10/0x10 [ 431.581747][ C0] ? validate_chain+0x11e/0x5920 [ 431.581764][ C0] ? __kernel_text_address+0xd/0x40 [ 431.581781][ C0] ? unwind_get_return_address+0x4d/0x90 [ 431.581818][ C0] ? mark_lock+0x9a/0x360 [ 431.581847][ C0] shmem_evict_inode+0x29b/0xa80 [ 431.581866][ C0] ? inode_wait_for_writeback+0x111/0x2a0 [ 431.581888][ C0] ? __pfx_shmem_evict_inode+0x10/0x10 [ 431.581907][ C0] ? do_raw_spin_unlock+0x13c/0x8b0 [ 431.581929][ C0] ? __pfx_shmem_evict_inode+0x10/0x10 [ 431.581945][ C0] evict+0x4e8/0x9a0 [ 431.581974][ C0] ? __pfx_evict+0x10/0x10 [ 431.581998][ C0] ? _raw_spin_unlock+0x28/0x50 [ 431.582021][ C0] ? iput+0x713/0xa50 [ 431.582041][ C0] __dentry_kill+0x20d/0x630 [ 431.582063][ C0] ? dput+0x37/0x2b0 [ 431.582078][ C0] dput+0x19f/0x2b0 [ 431.582094][ C0] __fput+0x60b/0x9f0 [ 431.582120][ C0] __x64_sys_close+0x7f/0x110 [ 431.582140][ C0] do_syscall_64+0xf3/0x230 [ 431.582168][ C0] ? clear_bhb_loop+0x35/0x90 [ 431.582193][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 431.582221][ C0] RIP: 0033:0x7f86c8437cf0 [ 431.582245][ C0] Code: ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 80 3d 91 83 08 00 00 74 17 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c [ 431.582259][ C0] RSP: 002b:00007ffee7d02be8 EFLAGS: 00000202 ORIG_RAX: 0000000000000003 [ 431.582275][ C0] RAX: ffffffffffffffda RBX: 00007ffee7d02c00 RCX: 00007f86c8437cf0 [ 431.582287][ C0] RDX: 0000000000000010 RSI: 0000000000004c00 RDI: 0000000000000003 [ 431.582298][ C0] RBP: 000020000000f680 R08: 00007f86bfe00000 R09: 000000000000f624 [ 431.582310][ C0] R10: 0000000000000000 R11: 0000000000000202 R12: 000020000000f640 [ 431.582321][ C0] R13: 00007ffee7d02c40 R14: 0000000000000003 R15: 0000000000000000 [ 431.582338][ C0] [ 431.582346][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.417 msecs [ 431.582975][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 432.034782][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.14.0-rc7-syzkaller-00202-g183601b78a9b #0 [ 432.045324][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 432.055439][ T31] Call Trace: [ 432.058740][ T31] [ 432.061694][ T31] dump_stack_lvl+0x241/0x360 [ 432.066404][ T31] ? __pfx_vprintk_emit+0x10/0x10 [ 432.071451][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 432.076676][ T31] ? __pfx__printk+0x10/0x10 [ 432.081302][ T31] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 432.087330][ T31] ? vscnprintf+0x5d/0x90 [ 432.091737][ T31] panic+0x349/0x880 [ 432.095681][ T31] ? nmi_trigger_cpumask_backtrace+0x244/0x320 [ 432.101857][ T31] ? __pfx_panic+0x10/0x10 [ 432.106298][ T31] ? preempt_schedule_thunk+0x1a/0x30 [ 432.111689][ T31] ? nmi_trigger_cpumask_backtrace+0x244/0x320 [ 432.117860][ T31] ? nmi_trigger_cpumask_backtrace+0x2d4/0x320 [ 432.124037][ T31] ? nmi_trigger_cpumask_backtrace+0x2d9/0x320 [ 432.130295][ T31] watchdog+0x1097/0x10a0 [ 432.134644][ T31] ? watchdog+0x1ea/0x10a0 [ 432.139089][ T31] ? __pfx_watchdog+0x10/0x10 [ 432.143783][ T31] kthread+0x7a9/0x920 [ 432.147872][ T31] ? __pfx_kthread+0x10/0x10 [ 432.152483][ T31] ? __pfx_watchdog+0x10/0x10 [ 432.157217][ T31] ? __pfx_kthread+0x10/0x10 [ 432.161852][ T31] ? __pfx_kthread+0x10/0x10 [ 432.166479][ T31] ? __pfx_kthread+0x10/0x10 [ 432.171103][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 432.176342][ T31] ? lockdep_hardirqs_on+0x99/0x150 [ 432.181575][ T31] ? __pfx_kthread+0x10/0x10 [ 432.186202][ T31] ret_from_fork+0x4b/0x80 [ 432.190650][ T31] ? __pfx_kthread+0x10/0x10 [ 432.195275][ T31] ret_from_fork_asm+0x1a/0x30 [ 432.200075][ T31] [ 432.203468][ T31] Kernel Offset: disabled [ 432.207811][ T31] Rebooting in 86400 seconds..