bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5010/1:b..l.. P10216/1:b..l.. P10209/1:b..l..
rcu: (detected by 0, t=10502 jiffies, g=104041, q=793 ncpus=1)
task:syz.2.1371 state:R running task stack:26920 pid:10209 tgid:10208 ppid:5640 task_flags:0x40044c flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5583 [inline]
__schedule+0x17dd/0x5830 kernel/sched/core.c:7382
preempt_schedule_common+0x7f/0xd0 kernel/sched/core.c:7561
preempt_schedule_thunk+0x16/0x40 arch/x86/entry/thunk.S:12
__raw_spin_unlock include/linux/spinlock_api_smp.h:201 [inline]
_raw_spin_unlock+0x41/0x50 kernel/locking/spinlock.c:213
spin_unlock include/linux/spinlock.h:401 [inline]
zap_pte_range mm/memory.c:2061 [inline]
zap_pmd_range mm/memory.c:2119 [inline]
zap_pud_range mm/memory.c:2147 [inline]
zap_p4d_range mm/memory.c:2168 [inline]
__zap_vma_range+0x3d59/0x4b90 mm/memory.c:2208
unmap_vmas+0x38b/0x550 mm/memory.c:2277
exit_mmap+0x290/0xa40 mm/mmap.c:1315
__mmput+0x118/0x420 kernel/fork.c:1192
exit_mm+0x18e/0x240 kernel/exit.c:586
do_exit+0x6a8/0x2360 kernel/exit.c:967
do_group_exit+0x22d/0x2f0 kernel/exit.c:1123
get_signal+0x136a/0x1430 kernel/signal.c:3113
arch_do_signal_or_restart+0xbb/0x860 arch/x86/kernel/signal.c:337
__exit_to_user_mode_loop kernel/entry/common.c:66 [inline]
exit_to_user_mode_loop+0x10e/0x770 kernel/entry/common.c:101
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:343 [inline]
do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe6c559f559
RSP: 002b:00007fe6c646b0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fe6c5825fa8 RCX: 00007fe6c559f559
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fe6c5825fa8
RBP: 00007fe6c5825fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe6c5826038 R14: 00007ffe2b10efd0 R15: 00007ffe2b10f0b8
task:syz.5.1373 state:R running task stack:25608 pid:10216 tgid:10216 ppid:9025 task_flags:0x400040 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5583 [inline]
__schedule+0x17dd/0x5830 kernel/sched/core.c:7382
preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7662
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:543 [inline]
irqentry_exit+0x14f/0x9b0 kernel/entry/common.c:154
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:lock_acquire+0x232/0x350 kernel/locking/lockdep.c:5947
Code: ff ff ff e8 d0 ca 74 0a f7 44 24 10 00 02 00 00 0f 84 38 ff ff ff 65 48 8b 05 d2 54 46 13 48 3b 44 24 50 75 33 fb 48 83 c4 58 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 8d 3d c7 b5 1f
RSP: 0018:ffffc9000599f120 EFLAGS: 00000292
RAX: c89487b2f91d7700 RBX: 0000000000000000 RCX: 0000000000000046
RDX: 000000001ade326d RSI: ffffffff8ea7ab24 RDI: ffffffff8c8ff980
RBP: ffff88802c7d1f40 R08: ffffffff8178a98f R09: 0000000000000000
R10: ffffc9000599f258 R11: ffffffff81b3d670 R12: ffffffff9015a420
R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
rcu_read_lock include/linux/rcupdate.h:849 [inline]
class_rcu_constructor include/linux/rcupdate.h:1216 [inline]
unwind_next_frame+0xac/0x2550 arch/x86/kernel/unwind_orc.c:495
arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
save_stack+0x122/0x230 mm/page_owner.c:183
__reset_page_owner+0x73/0x2a0 mm/page_owner.c:338
reset_page_owner include/linux/page_owner.h:26 [inline]
__free_pages_prepare mm/page_alloc.c:1403 [inline]
__free_frozen_pages+0xc97/0xd90 mm/page_alloc.c:2957
__slab_free+0x269/0x2c0 mm/slub.c:5926
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x99/0x100 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:361
kasan_slab_alloc include/linux/kasan.h:253 [inline]
slab_post_alloc_hook mm/slub.c:4720 [inline]
slab_alloc_node mm/slub.c:5033 [inline]
kmem_cache_alloc_noprof+0x2b4/0x600 mm/slub.c:5047
vm_area_dup+0x32/0x8e0 mm/vma_init.c:128
__split_vma+0x2c2/0xa40 mm/vma.c:542
split_vma mm/vma.c:626 [inline]
vma_modify+0xa08/0x24f0 mm/vma.c:1785
vma_modify_flags+0x2a4/0x3c0 mm/vma.c:1805
mprotect_fixup+0x54f/0xf20 mm/mprotect.c:823
do_mprotect_pkey+0x8e7/0xd40 mm/mprotect.c:1001
__do_sys_mprotect mm/mprotect.c:1022 [inline]
__se_sys_mprotect mm/mprotect.c:1019 [inline]
__x64_sys_mprotect+0x80/0x90 mm/mprotect.c:1019
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: 0033:0x7f546f39f357
RSP: 002b:00007ffd2dc139b8 EFLAGS: 00000206 ORIG_RAX: 000000000000000a
RAX: ffffffffffffffda RBX: 00007f54701ed6c0 RCX: 00007f546f39f357
RDX: 0000000000000003 RSI: 0000000000020000 RDI: 00007f54701ce000
RBP: 0000000000000000 R08: 00000000ffffffff R09: 0000000000000000
R10: 0000000000021000 R11: 0000000000000206 R12: 00007ffd2dc13b10
R13: ffffffffffffffc0 R14: 0000000000001000 R15: 0000000000000000
task:udevd state:R running task stack:22408 pid:5010 tgid:5010 ppid:1 task_flags:0x400140 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5583 [inline]
__schedule+0x17dd/0x5830 kernel/sched/core.c:7382
preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7662
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:543 [inline]
irqentry_exit+0x14f/0x9b0 kernel/entry/common.c:154
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:path_init+0x1be/0x1300 fs/namei.c:2699
Code: c8 52 70 ff eb 24 e8 c1 52 70 ff c6 05 2b 0b 51 0f 01 48 c7 c7 e0 6e 40 8c be 53 03 00 00 48 c7 c2 20 6f 40 8c e8 c2 a4 4b ff <49> 8d 7d 38 48 89 f8 48 c1 e8 03 42 0f b6 04 38 84 c0 0f 85 b1 0d
RSP: 0018:ffffc90002fe77f8 EFLAGS: 00000293
RAX: ffffffff8258f156 RBX: 0000000000000101 RCX: ffff88807e5d5dc0
RDX: 0000000000000000 RSI: ffffffff8c8ff960 RDI: ffffffff8c8ff920
RBP: 0000000000000001 R08: ffffffff8258f114 R09: 0000000000000000
R10: ffffc90002fe79c0 R11: fffff520005fcf3a R12: ffff88805c9a5618
R13: ffffc90002fe79c0 R14: 1ffff1100b934ac3 R15: dffffc0000000000
path_lookupat+0x2a/0x8c0 fs/namei.c:2809
filename_lookup+0x265/0x5d0 fs/namei.c:2848
vfs_statx+0xfc/0x200 fs/stat.c:357
vfs_fstatat+0x11b/0x170 fs/stat.c:377
__do_sys_newfstatat fs/stat.c:542 [inline]
__se_sys_newfstatat+0x118/0x3a0 fs/stat.c:536
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: 0033:0x7ff4c2711b0a
RSP: 002b:00007ffceb562be8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00005627fec7e410 RCX: 00007ff4c2711b0a
RDX: 00007ffceb562bf0 RSI: 00005627fec6c2a8 RDI: 00000000ffffff9c
RBP: 000056281c34d198 R08: 00063478c1c69200 R09: 3fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffceb562bf0 R14: 0000000000000000 R15: 00063478c1c69200
rcu: rcu_preempt kthread starved for 465 jiffies! g104041 f0x0 RCU_GP_WAIT_FQS(5) ->state=R ->cpu=0
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:27368 pid:17 tgid:17 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5583 [inline]
__schedule+0x17dd/0x5830 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: 0 UID: 0 PID: 3237 Comm: kworker/R-bat_e Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/15/2026
Workqueue: bat_events batadv_tt_purge
RIP: 0010:lock_release+0x2e1/0x3c0 kernel/locking/lockdep.c:5968
Code: 69 46 13 00 00 00 00 eb b5 e8 3b 98 74 0a f7 c3 00 02 00 00 74 b9 65 48 8b 05 43 22 46 13 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 a8 86 1f
RSP: 0018:ffffc90000006de8 EFLAGS: 00000286
RAX: b9eead40e63eab00 RBX: 0000000000000206 RCX: 8000000000000101
RDX: ffffc90000006f01 RSI: ffffffff8ea7ab24 RDI: ffffffff8c8ff980
RBP: ffff888033bccaa8 R08: ffffc90000007f50 R09: 0000000000000000
R10: ffffc90000006f18 R11: fffff52000000de5 R12: 0000000000000003
R13: 0000000000000003 R14: ffffffff9015a420 R15: ffff888033bcbe80
FS: 0000000000000000(0000) GS:ffff888123376000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555585fe54e8 CR3: 000000007b762000 CR4: 00000000003526f0
DR0: fffffffffffffefe DR1: 000000007fffffff DR2: 000000000000000c
DR3: 0000000000000009 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
rcu_lock_release include/linux/rcupdate.h:319 [inline]
rcu_read_unlock include/linux/rcupdate.h:880 [inline]
class_rcu_destructor include/linux/rcupdate.h:1216 [inline]
unwind_next_frame+0x1baa/0x2550 arch/x86/kernel/unwind_orc.c:709
arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:57 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
unpoison_slab_object mm/kasan/common.c:351 [inline]
__kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:377
kasan_slab_alloc include/linux/kasan.h:253 [inline]
slab_post_alloc_hook mm/slub.c:4720 [inline]
slab_alloc_node mm/slub.c:5033 [inline]
kmem_cache_alloc_node_noprof+0x34f/0x600 mm/slub.c:5105
__alloc_skb+0x1db/0x7a0 net/core/skbuff.c:705
alloc_skb include/linux/skbuff.h:1390 [inline]
nlmsg_new include/net/netlink.h:1055 [inline]
fdb_notify+0xa6/0x160 net/bridge/br_fdb.c:188
__fdb_update net/bridge/br_fdb.c:1060 [inline]
br_fdb_update+0x5f7/0x870 net/bridge/br_fdb.c:1079
br_handle_frame_finish+0x5e2/0x1ae0 net/bridge/br_input.c:146
br_nf_hook_thresh+0x3dd/0x4c0 net/bridge/br_netfilter_hooks.c:-1
br_nf_pre_routing_finish_ipv6+0x90c/0xc40 net/bridge/br_netfilter_ipv6.c:-1
NF_HOOK include/linux/netfilter.h:325 [inline]
br_nf_pre_routing_ipv6+0x382/0x6f0 net/bridge/br_netfilter_ipv6.c:183
nf_hook_entry_hookfn include/linux/netfilter.h:165 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:293 [inline]
br_handle_frame+0x1329/0x1600 net/bridge/br_input.c:453
__netif_receive_skb_core+0x989/0x30f0 net/core/dev.c:6312
__netif_receive_skb_one_core net/core/dev.c:6431 [inline]
__netif_receive_skb net/core/dev.c:6546 [inline]
process_backlog+0x727/0x18b0 net/core/dev.c:6897
__napi_poll+0xaa/0x330 net/core/dev.c:7966
napi_poll net/core/dev.c:8029 [inline]
net_rx_action+0x61d/0xf50 net/core/dev.c:8186
handle_softirqs+0x265/0x8d0 kernel/softirq.c:669
do_softirq+0x77/0xd0 kernel/softirq.c:569
__local_bh_enable_ip+0x100/0x140 kernel/softirq.c:473
spin_unlock_bh include/linux/spinlock.h:407 [inline]
batadv_tt_local_purge+0x277/0x300 net/batman-adv/translation-table.c:1798
batadv_tt_purge+0x35/0xa40 net/batman-adv/translation-table.c:4269
process_one_work kernel/workqueue.c:3495 [inline]
process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3578
rescuer_thread+0x84a/0x12a0 kernel/workqueue.c:3803
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
net_ratelimit: 3133 callbacks suppressed
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)