bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...!: (1 GPs behind) idle=277c/1/0x4000000000000000 softirq=62073/62073 fqs=1
rcu: (detected by 1, t=10502 jiffies, g=73069, q=653 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 15960 Comm: syz.1.3511 Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
RIP: 0010:_raw_spin_unlock_irqrestore+0x6/0x80 kernel/locking/spinlock.c:220
Code: e8 ff 77 37 f5 5b c3 cc cc cc cc cc 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 41 56 <53> 48 89 f3 49 89 fe 48 83 c7 18 48 8b 74 24 10 e8 35 52 a8 f5 4c
RSP: 0018:ffffc90000007cf8 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff888030ae4300 RCX: 0000000000000001
RDX: 0000000000000001 RSI: 0000000000000096 RDI: ffffffff9bc61400
RBP: ffff88807b1d1fd0 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000000f8c R12: ffff88807b1d1fd8
R13: ffff88807b1d1fc0 R14: dffffc0000000000 R15: 1ffff1100f63a3fa
FS: 00007f22276376c0(0000) GS:ffff888123a6f000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000140 CR3: 0000000078c22000 CR4: 00000000003526f0
Call Trace:
debug_object_activate+0x2ec/0x420 lib/debugobjects.c:891
debug_hrtimer_activate kernel/time/hrtimer.c:486 [inline]
debug_activate kernel/time/hrtimer.c:529 [inline]
enqueue_hrtimer+0xa9/0x2c0 kernel/time/hrtimer.c:1137
__run_hrtimer kernel/time/hrtimer.c:2091 [inline]
__hrtimer_run_queues+0x4ce/0xa10 kernel/time/hrtimer.c:2132
hrtimer_interrupt+0x4cd/0xaa0 kernel/time/hrtimer.c:2251
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1051 [inline]
__sysvec_apic_timer_interrupt+0x102/0x430 arch/x86/kernel/apic/apic.c:1068
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:lock_release+0x2e1/0x3c0 kernel/locking/lockdep.c:5968
Code: 34 f7 12 00 00 00 00 eb b5 e8 eb e2 54 0a f7 c3 00 02 00 00 74 b9 65 48 8b 05 03 ed f6 12 48 3b 44 24 28 75 48 fb 48 83 c4 30 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 8d 3d d8 5d da
RSP: 0018:ffffc90005fe7430 EFLAGS: 00000286
RAX: b29f5fd02ce69100 RBX: 0000000000000206 RCX: 0000000000000046
RDX: 000000005bc233d9 RSI: ffffffff8e703f00 RDI: ffffffff8c6e8c80
RBP: ffff888079fd6998 R08: ffffffff8248e425 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff94000270909 R12: 0000000000000001
R13: 0000000000000001 R14: ffffffff8fd5a4a0 R15: ffff888079fd5dc0
rcu_lock_release include/linux/rcupdate.h:319 [inline]
rcu_read_unlock include/linux/rcupdate.h:880 [inline]
get_mem_cgroup_from_mm+0x1ad/0x290 mm/memcontrol.c:1226
__mem_cgroup_charge+0x15/0x80 mm/memcontrol.c:5389
mem_cgroup_charge include/linux/memcontrol.h:682 [inline]
shmem_alloc_and_add_folio+0x7bb/0xf60 mm/shmem.c:2193
shmem_get_folio_gfp+0x594/0x1330 mm/shmem.c:2736
shmem_fault+0x179/0x390 mm/shmem.c:2930
__do_fault+0x138/0x2a0 mm/memory.c:5660
do_read_fault mm/memory.c:6095 [inline]
do_fault mm/memory.c:6229 [inline]
do_pte_missing+0x21d2/0x3570 mm/memory.c:4762
handle_pte_fault mm/memory.c:6648 [inline]
__handle_mm_fault mm/memory.c:6797 [inline]
handle_mm_fault+0x1a2a/0x3540 mm/memory.c:6964
faultin_page mm/gup.c:1126 [inline]
__get_user_pages+0x1670/0x2750 mm/gup.c:1428
populate_vma_page_range+0x311/0x3f0 mm/gup.c:1864
__mm_populate+0x25f/0x390 mm/gup.c:1967
mm_populate include/linux/mm.h:4450 [inline]
vm_mmap_pgoff+0x36e/0x520 mm/util.c:586
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f222679f559
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2227637028 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f2226a25fa0 RCX: 00007f222679f559
RDX: b635773f06ebbeee RSI: 0000000000b36000 RDI: 0000200000000000
RBP: 00007f2226836b20 R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000008031 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2226a26038 R14: 00007f2226a25fa0 R15: 00007ffcd0d770a8
rcu: rcu_preempt kthread starved for 10500 jiffies! g73069 f0x0 RCU_GP_WAIT_FQS(5) ->state=R ->cpu=1
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:R running task stack:27496 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5583 [inline]
__schedule+0x17dd/0x5820 kernel/sched/core.c:7382
__schedule_loop kernel/sched/core.c:7459 [inline]
schedule+0x164/0x2b0 kernel/sched/core.c:7474
schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x30c/0x1230 kernel/rcu/tree.c:2122
rcu_gp_kthread+0x9c/0x340 kernel/rcu/tree.c:2330
kthread+0x38b/0x480 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
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 UID: 0 PID: 14217 Comm: syz-executor Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
RIP: 0010:csd_lock_wait kernel/smp.c:389 [inline]
RIP: 0010:csd_lock kernel/smp.c:422 [inline]
RIP: 0010:smp_call_function_many_cond+0x61e/0x1500 kernel/smp.c:970
Code: b6 04 04 84 c0 0f 85 d5 03 00 00 44 8b 3b 44 89 fe 83 e6 01 31 ff e8 81 79 0c 00 41 83 e7 01 75 07 e8 66 74 0c 00 eb 3f f3 90 <48> b8 00 00 00 00 00 fc ff df 41 0f b6 04 04 84 c0 75 0f f7 03 01
RSP: 0018:ffffc9000368f420 EFLAGS: 00000293
RAX: ffffffff81bc72de RBX: ffff8880b8444048 RCX: ffff88807f9fbe80
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000368f570 R08: ffff88807f9fd41f R09: 1ffff1100ff3fa83
R10: dffffc0000000000 R11: 0000000000000000 R12: 1ffff11017088809
R13: 0000000000000000 R14: ffff8880b8444040 R15: 0000000000000001
FS: 0000555562828500(0000) GS:ffff888123b6f000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b34123ffc CR3: 0000000056d1c000 CR4: 00000000003526f0
Call Trace:
__flush_tlb_multi arch/x86/include/asm/paravirt.h:46 [inline]
flush_tlb_multi arch/x86/mm/tlb.c:1361 [inline]
flush_tlb_mm_range+0x910/0x10b0 arch/x86/mm/tlb.c:1435
dup_mmap+0x17dd/0x1e10 mm/mmap.c:1884
dup_mm kernel/fork.c:1542 [inline]
copy_mm+0x115/0x470 kernel/fork.c:1594
copy_process+0x1ecc/0x44b0 kernel/fork.c:2320
kernel_clone+0x2d7/0x940 kernel/fork.c:2784
__do_sys_clone kernel/fork.c:2926 [inline]
__se_sys_clone kernel/fork.c:2910 [inline]
__x64_sys_clone+0x1b6/0x230 kernel/fork.c:2910
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2bfbbc7fd2
Code: 89 e7 e8 71 8b f7 ff 45 31 c0 31 d2 31 f6 64 48 8b 04 25 10 00 00 00 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 66 89 c5 85 c0 75 3b 64 48 8b 04 25 10 00 00
RSP: 002b:00007ffe590d42c0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007ffe590d42c0 RCX: 00007f2bfbbc7fd2
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007ffe590d444c R08: 0000000000000000 R09: 0000000000000001
R10: 00005555628287d0 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000000927c0 R14: 000000000007672e R15: 00007ffe590d44a0