INFO: task kworker/0:0H:10 blocked for more than 150 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:0H    state:D stack:26760 pid:10    tgid:10    ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue: kblockd blk_mq_timeout_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5504 [inline]
 __schedule+0x17d9/0x56c0 kernel/sched/core.c:7228
 __schedule_loop kernel/sched/core.c:7307 [inline]
 schedule+0x164/0x360 kernel/sched/core.c:7322
 schedule_timeout+0xc0/0x2c0 kernel/time/sleep_timeout.c:75
 do_wait_for_common kernel/sched/completion.c:100 [inline]
 __wait_for_common kernel/sched/completion.c:121 [inline]
 wait_for_common kernel/sched/completion.c:132 [inline]
 wait_for_completion+0x2ca/0x5e0 kernel/sched/completion.c:153
 __synchronize_srcu+0x23b/0x2f0 kernel/rcu/srcutree.c:1496
 blk_mq_wait_quiesce_done block/blk-mq.c:284 [inline]
 blk_mq_timeout_work+0x195/0x3e0 block/blk-mq.c:1739
 process_one_work kernel/workqueue.c:3314 [inline]
 process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3397
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3478
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
 __sys_info lib/sys_info.c:157 [inline]
 sys_info+0x135/0x170 lib/sys_info.c:165
 check_hung_uninterruptible_tasks kernel/hung_task.c:353 [inline]
 watchdog+0xfd7/0x1030 kernel/hung_task.c:561
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Workqueue: events free_obj_work
RIP: 0010:__wrmsrq arch/x86/include/asm/msr.h:80 [inline]
RIP: 0010:arch_inlined_clockevent_set_next_coupled arch/x86/include/asm/clock_inlined.h:19 [inline]
RIP: 0010:clockevent_set_next_coupled kernel/time/clockevents.c:318 [inline]
RIP: 0010:clockevents_program_event+0x1b9/0x630 kernel/time/clockevents.c:360
Code: 3c 24 4c 89 fe e8 67 b5 fc ff 84 c0 0f 84 da 00 00 00 e8 aa ad 0f 00 48 8b 44 24 40 48 89 c2 48 c1 ea 20 b9 e0 06 00 00 0f 30 <4c> 8b 64 24 10 43 c6 44 2c 04 f8 31 c0 48 c7 44 24 20 0e 36 e0 45
RSP: 0018:ffffc90000006660 EFLAGS: 00000007
RAX: 000000e888e1491a RBX: ffff8880b8623c80 RCX: 00000000000006e0
RDX: 00000000000000e8 RSI: 0000000000000014 RDI: 0000000000000040
RBP: ffffc90000006710 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000003 R11: 0000000000000100 R12: ffff8880b8623cc8
R13: dffffc0000000000 R14: 0000000000000004 R15: 000000674d4898f4
FS:  0000000000000000(0000) GS:ffff88812527b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6fe0d8cff8 CR3: 000000007ce9c000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 hrtimer_rearm kernel/time/hrtimer.c:2141 [inline]
 __hrtimer_rearm_deferred+0x26c/0x420 kernel/time/hrtimer.c:2161
 hrtimer_rearm_deferred_tif include/linux/hrtimer_rearm.h:53 [inline]
 hrtimer_rearm_deferred include/linux/hrtimer_rearm.h:62 [inline]
 irqentry_exit_to_kernel_mode_after_preempt include/linux/irq-entry-common.h:505 [inline]
 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:542 [inline]
 irqentry_exit+0x8b7/0x8f0 kernel/entry/common.c:167
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:lowmem_page_address include/linux/mm.h:2973 [inline]
RIP: 0010:kmap_local_page include/linux/highmem-internal.h:188 [inline]
RIP: 0010:clear_highpage_kasan_tagged include/linux/highmem.h:342 [inline]
RIP: 0010:kernel_init_pages mm/page_alloc.c:1221 [inline]
RIP: 0010:post_alloc_hook+0x1cb/0x280 mm/page_alloc.c:1851
Code: 04 0c 49 c1 e5 06 4c 29 ef 4c 01 e7 b9 00 10 00 00 31 c0 f3 aa 0f 1f 44 00 00 49 81 c4 00 10 00 00 49 ff cf 0f 84 ee fe ff ff <48> b8 00 00 00 00 00 fc ff df 80 7c 05 00 00 74 0c 48 c7 c7 10 3f
RSP: 0018:ffffc90000006868 EFLAGS: 00000206
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880867d6000
RBP: 1ffffffff1c4e7e2 R08: ffffffff903116f7 R09: 0000000000000000
R10: ffffed1010cf8000 R11: fffffbfff20622df R12: fffa8000867d6000
R13: fffa800000000000 R14: 1ffffffff1c4e7e0 R15: 000000000000000a
 prep_new_page mm/page_alloc.c:1861 [inline]
 get_page_from_freelist+0x24ae/0x2530 mm/page_alloc.c:3941
 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5221
 alloc_pages_mpol+0x212/0x380 mm/mempolicy.c:2490
 ___kmalloc_large_node+0x4c/0x120 mm/slub.c:5275
 __kmalloc_large_node_noprof+0x18/0x90 mm/slub.c:5306
 __do_kmalloc_node mm/slub.c:5322 [inline]
 __kmalloc_node_track_caller_noprof+0x155/0x7b0 mm/slub.c:5438
 kmalloc_reserve net/core/skbuff.c:637 [inline]
 pskb_expand_head+0x22c/0x13a0 net/core/skbuff.c:2306
 netif_skb_check_for_xdp net/core/dev.c:5571 [inline]
 netif_receive_generic_xdp net/core/dev.c:5602 [inline]
 do_xdp_generic+0x9a5/0x12d0 net/core/dev.c:5670
 __netif_receive_skb_core+0x10e0/0x30b0 net/core/dev.c:6016
 __netif_receive_skb_one_core net/core/dev.c:6204 [inline]
 __netif_receive_skb net/core/dev.c:6319 [inline]
 netif_receive_skb_internal net/core/dev.c:6405 [inline]
 netif_receive_skb+0x1fe/0xbf0 net/core/dev.c:6464
 NF_HOOK+0xa4/0x3a0 include/linux/netfilter.h:318
 br_handle_frame_finish+0x1192/0x1990 net/bridge/br_input.c:-1
 br_nf_hook_thresh net/bridge/br_netfilter_hooks.c:1165 [inline]
 br_nf_pre_routing_finish+0x138a/0x1a10 net/bridge/br_netfilter_hooks.c:430
 NF_HOOK+0x64e/0x6e0 include/linux/netfilter.h:318
 br_nf_pre_routing+0xec2/0x14b0 net/bridge/br_netfilter_hooks.c:539
 nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
 nf_hook_bridge_pre net/bridge/br_input.c:291 [inline]
 br_handle_frame+0x127f/0x1510 net/bridge/br_input.c:442
 __netif_receive_skb_core+0x989/0x30b0 net/core/dev.c:6093
 __netif_receive_skb_one_core net/core/dev.c:6204 [inline]
 __netif_receive_skb net/core/dev.c:6319 [inline]
 process_backlog+0x706/0x1860 net/core/dev.c:6670
 __napi_poll+0xaa/0x330 net/core/dev.c:7729
 napi_poll net/core/dev.c:7792 [inline]
 net_rx_action+0x61d/0xf50 net/core/dev.c:7949
 handle_softirqs+0x225/0x840 kernel/softirq.c:622
 __do_softirq kernel/softirq.c:656 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0xca/0x220 kernel/softirq.c:735
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:stackdepot_memcmp lib/stackdepot.c:584 [inline]
RIP: 0010:find_stack lib/stackdepot.c:618 [inline]
RIP: 0010:stack_depot_save_flags+0x1b4/0x800 lib/stackdepot.c:676
Code: 24 04 85 db 75 5d 4d 8b 3f 4d 39 e7 74 52 41 39 6f 10 75 f2 45 39 57 14 75 ec 31 c0 49 8b 0c c6 49 3b 4c c7 20 75 df 48 ff c0 <41> 39 c5 75 ed 83 fe 02 72 2f 49 8d 7f 1c 41 8b 5f 1c 85 db 74 11
RSP: 0018:ffffc900000e7718 EFLAGS: 00000206
RAX: 0000000000000009 RBX: 0000000000000000 RCX: ffffffff816b7ab4
RDX: 00000000de7ac964 RSI: 0000000000000001 RDI: 00000000df107b52
RBP: 000000002980dc57 R08: 0000000053b5aea1 R09: 000000007a756ab1
R10: 000000000000000a R11: ffffffff81b10630 R12: ffff88823aedc570
R13: 000000000000000a R14: ffffc900000e7770 R15: ffff888034f691e0
 kasan_save_stack mm/kasan/common.c:58 [inline]
 kasan_save_track+0x4f/0x80 mm/kasan/common.c:78
 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:584
 poison_slab_object mm/kasan/common.c:253 [inline]
 __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:285
 kasan_slab_free include/linux/kasan.h:235 [inline]
 slab_free_hook mm/slub.c:2700 [inline]
 slab_free mm/slub.c:6310 [inline]
 kmem_cache_free+0x182/0x650 mm/slub.c:6437
 free_object_list lib/debugobjects.c:326 [inline]
 free_obj_work+0x357/0x490 lib/debugobjects.c:530
 process_one_work kernel/workqueue.c:3314 [inline]
 process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3397
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3478
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
net_ratelimit: 16191 callbacks suppressed
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)