DUID 00:04:e3:38:52:80:67:3f:e9:c9:a2:47:22:a3:59:23:7d:1e forked to background, child pid 4886 [ 39.316880][ T4887] 8021q: adding VLAN 0 to HW filter on device bond0 [ 39.326725][ T4887] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller syzkaller login: [ 81.851873][ T47] cfg80211: failed to load regulatory.db Warning: Permanently added '10.128.1.239' (ED25519) to the list of known hosts. executing program [ 144.001046][ T5236] loop0: detected capacity change from 0 to 32768 [ 144.010668][ T5236] ======================================================= [ 144.010668][ T5236] WARNING: The mand mount option has been deprecated and [ 144.010668][ T5236] and is ignored by this kernel. Remove the mand [ 144.010668][ T5236] option from the mount to silence this warning. [ 144.010668][ T5236] ======================================================= [ 144.081464][ T5236] bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=errors=continue,compression=zstd,norecovery,recovery_pass_last=check_dirents,nojournal_transaction_names,version_upgrade=none [ 144.100431][ T5236] bcachefs (loop0): recovering from clean shutdown, journal seq 7 [ 144.116305][ T5236] invalid bkey u64s 11 type alloc_v4 0:14:0 len 0 ver 0: [ 144.116332][ T5236] gen 0 oldest_gen 0 data_type journal [ 144.116341][ T5236] journal_seq 1 [ 144.116349][ T5236] need_discard 1 [ 144.116357][ T5236] need_inc_gen 1 [ 144.116365][ T5236] dirty_sectors 256 [ 144.116373][ T5236] stripe_sectors 0 [ 144.116381][ T5236] cached_sectors 0 [ 144.116388][ T5236] stripe 67108864 [ 144.116397][ T5236] stripe_redundancy 0 [ 144.116404][ T5236] io_time[READ] 1 [ 144.116412][ T5236] io_time[WRITE] 1 [ 144.116420][ T5236] fragmentation 0 [ 144.116428][ T5236] bp_start 8 [ 144.116436][ T5236] [ 144.116443][ T5236] invalid data type (got 2 should be 7): delete?, fixing [ 144.195470][ T5236] bcachefs (loop0): accounting_read... done [ 144.201789][ T5236] bcachefs (loop0): alloc_read... done [ 144.207337][ T5236] bcachefs (loop0): stripes_read... done [ 144.213081][ T5236] bcachefs (loop0): snapshots_read... done [ 144.222370][ T5236] bcachefs (loop0): going read-write executing program [ 144.233580][ T5236] bcachefs (loop0): Fixed errors, running fsck a second time to verify fs is clean [ 144.245200][ T5236] 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 [ 174.660532][ T5246] Allocator stuck? Waited for 30 seconds [ 174.660553][ T5246] Allocator debug: [ 174.660564][ T5246] capacity1536 [ 174.660575][ T5246] reserved 31232 [ 174.660586][ T5246] hidden 0 [ 174.660598][ T5246] btree 0 [ 174.660608][ T5246] data 0 [ 174.660619][ T5246] cached 0 [ 174.660637][ T5246] reserved 0 [ 174.660648][ T5246] online_reserved 24 [ 174.660659][ T5246] nr_inodes 0 [ 174.660670][ T5246] [ 174.660680][ T5246] freelist_wait waiting [ 174.660691][ T5246] open buckets allocated1 [ 174.660702][ T5246] open buckets total 1024 [ 174.660713][ T5246] open_buckets_wait empty [ 174.660724][ T5246] open_buckets_btree 0 [ 174.660735][ T5246] open_buckets_user 0 [ 174.660746][ T5246] btree reserve cache 0 [ 174.660757][ T5246] executing program [ 174.660766][ T5246] Dev 0: [ 174.660776][ T5246] buckets sectors fragmented [ 174.660789][ T5246] free 0 0 0 [ 174.660802][ T5246] sb 0 0 0 [ 174.660815][ T5246] journal 0 0 0 [ 174.660828][ T5246] btree 0 0 0 [ 174.660840][ T5246] user 0 0 0 [ 174.660853][ T5246] cached 0 0 0 [ 174.660866][ T5246] parity 0 0 0 [ 174.660879][ T5246] stripe 0 0 0 [ 174.660891][ T5246] need_gc_gens 0 0 0 [ 174.660904][ T5246] need_discard 0 0 0 [ 174.660917][ T5246] unstriped 0 0 0 [ 174.660929][ T5246] capacity 128 [ 174.660940][ T5246] [ 174.660950][ T5246] reserves: [ 174.660960][ T5246] stripe 60 [ 174.660971][ T5246] normal 58 [ 174.660983][ T5246] copygc 56 [ 174.660994][ T5246] btree 28 [ 174.661005][ T5246] btree_copygc 0 [ 174.661021][ T5246] reclaim 0 [ 174.661032][ T5246] interior_updates 0 [ 174.661043][ T5246] [ 174.661053][ T5246] open buckets 0 [ 174.661064][ T5246] buckets to invalidate 0 [ 174.661075][ T5246] [ 174.661085][ T5246] Copygc debug: [ 174.661095][ T5246] running: 0 [ 174.661105][ T5246] copygc_wait:0 [ 174.661116][ T5246] copygc_wait_at:0 [ 174.661126][ T5246] Currently waiting for:0 B [ 174.661138][ T5246] Currently waiting since:640 KiB [ 174.661149][ T5246] Currently calculated wait:0 B [ 174.661160][ T5246] [ 174.661170][ T5246] Journal debug: [ 174.661180][ T5246] flags: running,may_skip_flush [ 174.661192][ T5246] dirty journal entries: 0/32768 [ 174.661208][ T5246] seq: 8 [ 174.661220][ T5246] seq_ondisk: 8 [ 174.661231][ T5246] last_seq: 9 [ 174.661242][ T5246] last_seq_ondisk: 8 [ 174.661253][ T5246] flushed_seq_ondisk: 8 [ 174.661264][ T5246] watermark: stripe [ 174.661275][ T5246] each entry reserved: 321 [ 174.661287][ T5246] nr flush writes: 1 [ 174.661298][ T5246] nr noflush writes: 0 [ 174.661309][ T5246] average write size: 1.23 KiB [ 174.661320][ T5246] nr direct reclaim: 0 [ 174.661331][ T5246] nr background reclaim: 0 [ 174.661342][ T5246] reclaim kicked: 0 [ 174.661353][ T5246] reclaim runs in: 0 ms [ 174.661365][ T5246] blocked: 0 [ 174.661376][ T5246] current entry sectors: 256 [ 174.661387][ T5246] current entry error: ok [ 174.661398][ T5246] current entry: closed [ 174.661409][ T5246] unwritten entries: [ 174.661420][ T5246] last buf closed [ 174.661430][ T5246] space: [ 174.661441][ T5246] discarded 256:1536 [ 174.661452][ T5246] clean ondisk 256:1536 [ 174.661463][ T5246] clean 256:1536 [ 174.661475][ T5246] total 256:2048 [ 174.661486][ T5246] dev 0: [ 174.661497][ T5246] nr 8 [ 174.661508][ T5246] bucket size 256 [ 174.661519][ T5246] available 6:248 [ 174.661530][ T5246] discard_idx 0 executing program [ 174.661542][ T5246] dirty_ondisk 0 (seq 8) [ 174.661553][ T5246] dirty_idx 0 (seq 8) [ 174.661565][ T5246] cur_idx 0 (seq 8) [ 174.661576][ T5246] executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 430.009680][ T31] INFO: task bch-copygc/loop:5246 blocked for more than 143 seconds. [ 430.018118][ T31] Not tainted 6.11.0-syzkaller-04744-gbdf56c7580d2 #0 [ 430.025510][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 430.034848][ T31] task:bch-copygc/loop state:D stack:20272 pid:5246 tgid:5246 ppid:2 flags:0x00004000 [ 430.045462][ T31] Call Trace: [ 430.048785][ T31] [ 430.051810][ T31] __schedule+0x17ae/0x4a10 [ 430.056664][ T31] ? __pfx___schedule+0x10/0x10 [ 430.061672][ T31] ? kfree+0x1a1/0x440 [ 430.066030][ T31] ? __pfx_lock_release+0x10/0x10 [ 430.071239][ T31] ? bch2_print_allocator_stuck+0x165/0xcb0 [ 430.077422][ T31] ? bch2_print_allocator_stuck+0xc24/0xcb0 [ 430.083883][ T31] ? schedule+0x90/0x320 [ 430.088320][ T31] schedule+0x14b/0x320 [ 430.093746][ T31] __closure_sync+0x259/0x2f0 [ 430.098479][ T31] ? __closure_sync+0x149/0x2f0 [ 430.103508][ T31] ? __pfx___closure_sync+0x10/0x10 [ 430.109069][ T31] ? __bch2_wait_on_allocator+0x1d6/0x250 [ 430.114897][ T31] __bch2_write+0x55a7/0x5d20 [ 430.119932][ T31] ? bch2_btree_iter_peek_upto+0x57cf/0x6f90 [ 430.126033][ T31] ? __pfx___bch2_write+0x10/0x10 [ 430.131341][ T31] ? __pfx_validate_chain+0x10/0x10 [ 430.136787][ T31] ? __pfx_validate_chain+0x10/0x10 [ 430.142262][ T31] ? __lock_acquire+0x1384/0x2050 [ 430.147368][ T31] bch2_write+0x947/0x1670 [ 430.151873][ T31] ? mark_lock+0x9a/0x360 executing program [ 430.156530][ T31] ? __pfx_bch2_write+0x10/0x10 [ 430.161561][ T31] ? bch2_data_update_read_done+0xfd/0x330 [ 430.167599][ T31] bch2_data_update_read_done+0x22e/0x330 [ 430.173475][ T31] ? __pfx_bch2_data_update_read_done+0x10/0x10 [ 430.180098][ T31] ? bch2_trans_srcu_unlock+0x57/0x5b0 [ 430.185780][ T31] bch2_moving_ctxt_do_pending_writes+0x44c/0x8d0 [ 430.192311][ T31] ? __pfx_bch2_moving_ctxt_do_pending_writes+0x10/0x10 [ 430.199569][ T31] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 430.205516][ T31] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 430.211997][ T31] ? finish_wait+0xd4/0x1e0 [ 430.216786][ T31] move_buckets_wait+0x2ba/0x1290 [ 430.221927][ T31] ? __pfx_move_buckets_wait+0x10/0x10 [ 430.227434][ T31] ? bch2_get_next_online_dev+0x2b/0x4f0 [ 430.233393][ T31] ? __pfx_autoremove_wake_function+0x10/0x10 [ 430.239558][ T31] ? bch2_get_next_online_dev+0x4b9/0x4f0 [ 430.245466][ T31] ? bch2_get_next_online_dev+0x2b/0x4f0 [ 430.251414][ T31] bch2_copygc_thread+0x83f/0xc20 [ 430.256502][ T31] ? __pfx_bch2_copygc_thread+0x10/0x10 [ 430.262130][ T31] ? bch2_copygc_thread+0x1a2/0xc20 [ 430.267590][ T31] ? _raw_spin_unlock_irqrestore+0x8f/0x140 [ 430.273620][ T31] ? lockdep_hardirqs_on+0x99/0x150 [ 430.278879][ T31] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 430.285065][ T31] ? __kthread_parkme+0x169/0x1d0 [ 430.290244][ T31] ? __pfx_bch2_copygc_thread+0x10/0x10 [ 430.295928][ T31] kthread+0x2f0/0x390 [ 430.300086][ T31] ? __pfx_bch2_copygc_thread+0x10/0x10 [ 430.305865][ T31] ? __pfx_kthread+0x10/0x10 [ 430.310606][ T31] ret_from_fork+0x4b/0x80 [ 430.315066][ T31] ? __pfx_kthread+0x10/0x10 [ 430.319919][ T31] ret_from_fork_asm+0x1a/0x30 [ 430.324755][ T31] [ 430.327859][ T31] [ 430.327859][ T31] Showing all locks held in the system: [ 430.335718][ T31] 1 lock held by khungtaskd/31: [ 430.341003][ T31] #0: ffffffff8e938aa0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 430.351071][ T31] 2 locks held by getty/4979: [ 430.355956][ T31] #0: ffff8880321820a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 430.365860][ T31] #1: ffffc900031232f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a6/0x1e00 [ 430.376339][ T31] 3 locks held by syz-executor165/7632: [ 430.382070][ T31] [ 430.384591][ T31] ============================================= [ 430.384591][ T31] [ 430.393145][ T31] NMI backtrace for cpu 1 [ 430.397520][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.11.0-syzkaller-04744-gbdf56c7580d2 #0 [ 430.407724][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 [ 430.417846][ T31] Call Trace: [ 430.421160][ T31] [ 430.424121][ T31] dump_stack_lvl+0x241/0x360 [ 430.428844][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 430.434087][ T31] ? __pfx__printk+0x10/0x10 [ 430.438746][ T31] nmi_cpu_backtrace+0x49c/0x4d0 [ 430.443725][ T31] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 430.449218][ T31] ? _printk+0xd5/0x120 [ 430.453406][ T31] ? __pfx__printk+0x10/0x10 [ 430.458009][ T31] ? __wake_up_klogd+0xcc/0x110 [ 430.462876][ T31] ? __pfx__printk+0x10/0x10 [ 430.467478][ T31] ? __rcu_read_unlock+0xa1/0x110 [ 430.472516][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 430.478510][ T31] nmi_trigger_cpumask_backtrace+0x198/0x320 [ 430.484500][ T31] watchdog+0xff4/0x1040 [ 430.488760][ T31] ? watchdog+0x1ea/0x1040 [ 430.493190][ T31] ? __pfx_watchdog+0x10/0x10 [ 430.497872][ T31] kthread+0x2f0/0x390 [ 430.501952][ T31] ? __pfx_watchdog+0x10/0x10 [ 430.506635][ T31] ? __pfx_kthread+0x10/0x10 [ 430.511230][ T31] ret_from_fork+0x4b/0x80 [ 430.515660][ T31] ? __pfx_kthread+0x10/0x10 [ 430.520263][ T31] ret_from_fork_asm+0x1a/0x30 [ 430.525052][ T31] [ 430.528224][ T31] Sending NMI from CPU 1 to CPUs 0: [ 430.533519][ C0] NMI backtrace for cpu 0 [ 430.533532][ C0] CPU: 0 UID: 0 PID: 7632 Comm: syz-executor165 Not tainted 6.11.0-syzkaller-04744-gbdf56c7580d2 #0 [ 430.533552][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 [ 430.533567][ C0] RIP: 0010:__this_cpu_preempt_check+0x0/0x20 [ 430.533596][ C0] Code: d4 fc ff e8 62 7d ff ff eb a8 e8 4b e0 ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 48 89 fe 48 c7 c7 80 da 5f 8c e9 bd fe ff ff 66 2e 0f [ 430.533610][ C0] RSP: 0018:ffffc900040776d8 EFLAGS: 00000046 [ 430.533626][ C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: 0000000080000000 [ 430.533637][ C0] RDX: dffffc0000000000 RSI: ffffffff8e938aa0 RDI: ffffffff8c0aea80 [ 430.533650][ C0] RBP: 0000000000000002 R08: ffffffff9420c887 R09: 1ffffffff2841910 [ 430.533662][ C0] R10: dffffc0000000000 R11: fffffbfff2841911 R12: 0000000000000246 [ 430.533674][ C0] R13: ffff88802d100000 R14: 00000000ffffffff R15: ffffffff8e938aa0 [ 430.533687][ C0] FS: 00007fa73dcb26c0(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000 [ 430.533706][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 430.533718][ C0] CR2: 00007fa7367ff000 CR3: 00000000245ee000 CR4: 00000000003506f0 [ 430.533732][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 430.533742][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 430.533753][ C0] Call Trace: [ 430.533759][ C0] [ 430.533765][ C0] ? nmi_cpu_backtrace+0x3c2/0x4d0 [ 430.533783][ C0] ? __pfx_lock_acquire+0x10/0x10 [ 430.533808][ C0] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 430.533831][ C0] ? nmi_cpu_backtrace_handler+0xc/0x20 [ 430.533853][ C0] ? nmi_handle+0x14f/0x5a0 [ 430.533869][ C0] ? nmi_handle+0x2a/0x5a0 [ 430.533885][ C0] ? __pfx___this_cpu_preempt_check+0x10/0x10 [ 430.533910][ C0] ? default_do_nmi+0x63/0x160 [ 430.533927][ C0] ? exc_nmi+0x123/0x1f0 [ 430.533943][ C0] ? end_repeat_nmi+0xf/0x53 [ 430.533969][ C0] ? __pfx___this_cpu_preempt_check+0x10/0x10 [ 430.533995][ C0] ? __pfx___this_cpu_preempt_check+0x10/0x10 [ 430.534021][ C0] ? __pfx___this_cpu_preempt_check+0x10/0x10 [ 430.534046][ C0] [ 430.534051][ C0] [ 430.534057][ C0] lock_is_held_type+0x101/0x190 [ 430.534080][ C0] mem_cgroup_from_task+0x9a/0x120 [ 430.534097][ C0] ? get_mem_cgroup_from_mm+0x38/0x2a0 [ 430.534112][ C0] get_mem_cgroup_from_mm+0xd7/0x2a0 [ 430.534148][ C0] __mem_cgroup_charge+0x16/0x80 [ 430.534170][ C0] shmem_alloc_and_add_folio+0x88f/0x14f0 [ 430.534190][ C0] ? filemap_get_entry+0x328/0x3b0 [ 430.534208][ C0] ? __pfx_filemap_get_entry+0x10/0x10 [ 430.534225][ C0] ? __pfx_shmem_alloc_and_add_folio+0x10/0x10 [ 430.534243][ C0] ? preempt_schedule_common+0x84/0xd0 [ 430.534265][ C0] ? preempt_schedule+0xe1/0xf0 [ 430.534285][ C0] ? __pfx_preempt_schedule+0x10/0x10 [ 430.534307][ C0] shmem_get_folio_gfp+0x8dc/0x2370 [ 430.534339][ C0] ? __pfx_shmem_get_folio_gfp+0x10/0x10 [ 430.534366][ C0] ? fault_in_readable+0x1a6/0x2b0 [ 430.534391][ C0] shmem_write_begin+0x170/0x450 [ 430.534408][ C0] ? __pfx_shmem_write_begin+0x10/0x10 [ 430.534427][ C0] ? fault_in_iov_iter_readable+0x229/0x280 [ 430.534450][ C0] generic_perform_write+0x37e/0x730 [ 430.534475][ C0] ? __pfx_generic_perform_write+0x10/0x10 [ 430.534495][ C0] ? preempt_count_add+0x93/0x190 [ 430.534517][ C0] ? mnt_put_write_access_file+0xb8/0x100 [ 430.534543][ C0] ? file_update_time+0x3be/0x430 [ 430.534570][ C0] shmem_file_write_iter+0xf9/0x120 [ 430.534588][ C0] vfs_write+0xa6d/0xc90 [ 430.534606][ C0] ? __pfx_shmem_file_write_iter+0x10/0x10 [ 430.534625][ C0] ? __pfx_vfs_write+0x10/0x10 [ 430.534647][ C0] ? __fdget_pos+0x19a/0x320 [ 430.534669][ C0] ksys_write+0x1a0/0x2c0 [ 430.534687][ C0] ? __pfx_ksys_write+0x10/0x10 [ 430.534710][ C0] ? exc_page_fault+0x590/0x8c0 [ 430.534733][ C0] ? do_syscall_64+0xb6/0x230 [ 430.534758][ C0] do_syscall_64+0xf3/0x230 [ 430.534781][ C0] ? clear_bhb_loop+0x35/0x90 [ 430.534804][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 430.534824][ C0] RIP: 0033:0x7fa73dcfb80f [ 430.534843][ C0] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 99 63 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 ec 63 02 00 48 [ 430.534856][ C0] RSP: 002b:00007fa73dcb2060 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 [ 430.534873][ C0] RAX: ffffffffffffffda RBX: 00007fa73dcb20a0 RCX: 00007fa73dcfb80f [ 430.534886][ C0] RDX: 0000000001000000 RSI: 00007fa735800000 RDI: 0000000000000003 [ 430.534897][ C0] RBP: 00007fa735800000 R08: 0000000000000000 R09: 0000000000005daf [ 430.534909][ C0] R10: 0000000000000032 R11: 0000000000000293 R12: 00007fa73dcb20e0 [ 430.534920][ C0] R13: 3d72656e776f662c R14: 0000000000000003 R15: 0000000001000000 [ 430.534938][ C0] [ 430.534946][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.427 msecs [ 430.535571][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 431.024356][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.11.0-syzkaller-04744-gbdf56c7580d2 #0 [ 431.034691][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 [ 431.044752][ T31] Call Trace: [ 431.048218][ T31] [ 431.051155][ T31] dump_stack_lvl+0x241/0x360 [ 431.055858][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 431.061071][ T31] ? __pfx__printk+0x10/0x10 [ 431.065672][ T31] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 431.071683][ T31] ? vscnprintf+0x5d/0x90 [ 431.076288][ T31] panic+0x349/0x870 [ 431.080200][ T31] ? nmi_trigger_cpumask_backtrace+0x244/0x320 [ 431.086368][ T31] ? __pfx_panic+0x10/0x10 [ 431.090799][ T31] ? tick_nohz_tick_stopped+0x82/0xb0 [ 431.096185][ T31] ? __irq_work_queue_local+0x137/0x410 [ 431.101765][ T31] ? preempt_schedule_thunk+0x1a/0x30 [ 431.107147][ T31] ? nmi_trigger_cpumask_backtrace+0x244/0x320 [ 431.113305][ T31] ? nmi_trigger_cpumask_backtrace+0x2d4/0x320 [ 431.119470][ T31] ? nmi_trigger_cpumask_backtrace+0x2d9/0x320 [ 431.125636][ T31] watchdog+0x1033/0x1040 [ 431.129976][ T31] ? watchdog+0x1ea/0x1040 [ 431.134403][ T31] ? __pfx_watchdog+0x10/0x10 [ 431.139107][ T31] kthread+0x2f0/0x390 [ 431.143185][ T31] ? __pfx_watchdog+0x10/0x10 [ 431.147868][ T31] ? __pfx_kthread+0x10/0x10 [ 431.152463][ T31] ret_from_fork+0x4b/0x80 [ 431.156891][ T31] ? __pfx_kthread+0x10/0x10 [ 431.161486][ T31] ret_from_fork_asm+0x1a/0x30 [ 431.166271][ T31] [ 431.169670][ T31] Kernel Offset: disabled [ 431.174002][ T31] Rebooting in 86400 seconds..