bridge0: received packet on veth0_to_bridge with own address as source address (addr:a2:a8:3b:f7:bd:db, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5773/1:b..l P5137/1:b..l P501/1:b..l
rcu: (detected by 0, t=10503 jiffies, g=10429, q=913 ncpus=2)
task:kworker/u4:5 state:R running task stack:24248 pid:501 ppid:2 flags:0x00004000
Workqueue: bat_events batadv_nc_worker
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1553/0x45a0 kernel/sched/core.c:6700
preempt_schedule_irq+0xbf/0x150 kernel/sched/core.c:7010
irqentry_exit+0x67/0x70 kernel/entry/common.c:438
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:26 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:89 [inline]
RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:107 [inline]
RIP: 0010:lock_acquire+0x142/0x420 kernel/locking/lockdep.c:5750
Code: 42 0f b6 04 38 84 c0 0f 85 09 02 00 00 41 83 3e 00 0f 85 17 01 00 00 43 c6 44 3c 08 00 48 c7 84 24 a0 00 00 00 00 00 00 00 9c <8f> 84 24 a0 00 00 00 4c 8b b4 24 a0 00 00 00 43 c6 44 3c 08 f8 fa
RSP: 0018:ffffc900032d7a38 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: eb4a44edbc8be800
RDX: 0000000000000000 RSI: ffffffff8b1c8e40 RDI: ffffffff8b1c8e00
RBP: ffffc900032d7b48 R08: ffffffff8e8b14ef R09: 1ffffffff1d1629d
R10: dffffc0000000000 R11: fffffbfff1d1629e R12: 1ffff9200065af54
R13: ffffffff8d1320a0 R14: ffff88801eb664dc R15: dffffc0000000000
rcu_lock_acquire include/linux/rcupdate.h:334 [inline]
rcu_read_lock include/linux/rcupdate.h:786 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
batadv_nc_worker+0xef/0x610 net/batman-adv/network-coding.c:719
process_one_work kernel/workqueue.c:2653 [inline]
process_scheduled_works+0xa5d/0x15d0 kernel/workqueue.c:2730
worker_thread+0xa55/0xfc0 kernel/workqueue.c:2811
kthread+0x2fa/0x390 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
task:udevd state:R running task stack:25160 pid:5137 ppid:1 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1553/0x45a0 kernel/sched/core.c:6700
preempt_schedule_common+0x82/0xc0 kernel/sched/core.c:6867
preempt_schedule+0xc0/0xd0 kernel/sched/core.c:6891
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
_raw_spin_unlock_irqrestore+0x111/0x120 kernel/locking/spinlock.c:194
spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
__wake_up_common_lock kernel/sched/wait.c:140 [inline]
__wake_up_sync_key+0x12c/0x1a0 kernel/sched/wait.c:213
sock_def_readable+0x1e1/0x420 net/core/sock.c:3354
__netlink_sendskb net/netlink/af_netlink.c:1266 [inline]
netlink_sendskb+0x9b/0x130 net/netlink/af_netlink.c:1272
netlink_sendmsg+0x8d0/0xbf0 net/netlink/af_netlink.c:1894
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg net/socket.c:745 [inline]
____sys_sendmsg+0x5ba/0x960 net/socket.c:2594
___sys_sendmsg+0x2a6/0x360 net/socket.c:2648
__sys_sendmsg net/socket.c:2677 [inline]
__do_sys_sendmsg net/socket.c:2686 [inline]
__se_sys_sendmsg+0x1c2/0x2b0 net/socket.c:2684
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7ff4cfaa7407
RSP: 002b:00007ffdedd5b590 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007ff4d0178880 RCX: 00007ff4cfaa7407
RDX: 0000000000000000 RSI: 00007ffdedd5b5f0 RDI: 0000000000000004
RBP: 000055f08b295660 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 00000000000000b2
R13: 000055f08b28d9e0 R14: 0000000000000000 R15: 0000000000000000
task:syz-executor state:R running task stack:21384 pid:5773 ppid:5761 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1553/0x45a0 kernel/sched/core.c:6700
preempt_schedule_common+0x82/0xc0 kernel/sched/core.c:6867
preempt_schedule+0xc0/0xd0 kernel/sched/core.c:6891
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45
__raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
_raw_spin_unlock+0x3a/0x40 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:391 [inline]
copy_pte_range mm/memory.c:1107 [inline]
copy_pmd_range mm/memory.c:1168 [inline]
copy_pud_range mm/memory.c:1205 [inline]
copy_p4d_range mm/memory.c:1229 [inline]
copy_page_range+0x2ba0/0x3670 mm/memory.c:1323
dup_mmap kernel/fork.c:768 [inline]
dup_mm kernel/fork.c:1693 [inline]
copy_mm+0x1281/0x1d80 kernel/fork.c:1742
copy_process+0x16f7/0x3d80 kernel/fork.c:2507
kernel_clone+0x24b/0x8a0 kernel/fork.c:2915
__do_sys_clone kernel/fork.c:3058 [inline]
__se_sys_clone kernel/fork.c:3042 [inline]
__x64_sys_clone+0x1b7/0x230 kernel/fork.c:3042
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fa7349c5292
RSP: 002b:00007ffe8c3c1d00 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007ffe8c3c1d00 RCX: 00007fa7349c5292
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007ffe8c3c1e8c R08: 0000000000000000 R09: 0000000000000001
R10: 000055555af2b7d0 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000000927c0 R14: 0000000000017803 R15: 00007ffe8c3c1ee0
rcu: rcu_preempt kthread starved for 205 jiffies! g10429 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:27656 pid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1553/0x45a0 kernel/sched/core.c:6700
schedule+0xbd/0x170 kernel/sched/core.c:6774
schedule_timeout+0x188/0x2d0 kernel/time/timer.c:2168
rcu_gp_fqs_loop+0x313/0x1590 kernel/rcu/tree.c:1667
rcu_gp_kthread+0x9d/0x3b0 kernel/rcu/tree.c:1866
kthread+0x2fa/0x390 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 PID: 5863 Comm: syz.3.9 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:rb_first+0x2f/0x70 lib/rbtree.c:471
Code: 57 41 56 53 48 89 fb 49 bf 00 00 00 00 00 fc ff df 48 89 f8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 04 15 69 f7 48 8b 03 <48> 85 c0 75 13 31 db 48 89 d8 5b 41 5e 41 5f c3 49 8b 06 48 85 c0
RSP: 0018:ffffc90000007b70 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff888143fab100 RCX: 0000000000000001
RDX: ffff888143fab068 RSI: 0000000000000004 RDI: ffff888143fab100
RBP: ffffc90000007cb0 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000000f60 R12: 1ffff92000000f7c
R13: ffff888143fab010 R14: ffff888143fab060 R15: dffffc0000000000
FS: 00007f75d66a96c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f75d6667d58 CR3: 0000000024cb4000 CR4: 00000000003506f0
Call Trace:
garp_gid_event net/802/garp.c:398 [inline]
garp_join_timer+0x31/0x120 net/802/garp.c:419
call_timer_fn+0x189/0x540 kernel/time/timer.c:1701
expire_timers kernel/time/timer.c:1752 [inline]
__run_timers+0x542/0x800 kernel/time/timer.c:2023
run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2036
handle_softirqs+0x280/0x820 kernel/softirq.c:578
__do_softirq kernel/softirq.c:612 [inline]
invoke_softirq kernel/softirq.c:452 [inline]
__irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661
irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:qlink_free mm/kasan/quarantine.c:166 [inline]
RIP: 0010:qlist_free_all+0x63/0xd0 mm/kasan/quarantine.c:185
Code: 49 89 c4 49 8b 2f 49 63 84 24 c0 00 00 00 49 29 c7 4c 89 e7 4c 89 fe e8 ab e8 ff ff 66 90 4c 89 f8 48 c1 e8 03 42 c6 04 28 fb <48> 8d 15 00 00 00 00 4c 89 e7 4c 89 fe e8 0b 1e ff ff 48 85 ed 75
RSP: 0018:ffffc9000509f990 EFLAGS: 00000a02
RAX: 1ffff11005ac85a4 RBX: ffffc9000509f9c8 RCX: 0000000000000000
RDX: ffff88802d642d20 RSI: ffff88802d642d20 RDI: ffff888019e4d280
RBP: ffff888026784640 R08: ffffea0001ed6800 R09: ffff88807b5a2200
R10: 0000000000042b00 R11: fffffbfff2238aa6 R12: ffff888019e4d280
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88802d642d20
kasan_quarantine_reduce+0x143/0x160 mm/kasan/quarantine.c:292
__kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:306
kasan_slab_alloc include/linux/kasan.h:188 [inline]
slab_post_alloc_hook+0x6e/0x4b0 mm/slab.h:767
slab_alloc_node mm/slub.c:3495 [inline]
__kmem_cache_alloc_node+0x13a/0x250 mm/slub.c:3534
kmalloc_trace+0x2a/0xe0 mm/slab_common.c:1098
kmalloc include/linux/slab.h:600 [inline]
kzalloc include/linux/slab.h:721 [inline]
percpu_ref_init+0xc3/0x360 lib/percpu-refcount.c:76
css_create kernel/cgroup/cgroup.c:5569 [inline]
cgroup_apply_control_enable+0x423/0xb00 kernel/cgroup/cgroup.c:3219
cgroup_mkdir+0xc48/0xe30 kernel/cgroup/cgroup.c:5779
kernfs_iop_mkdir+0x250/0x3d0 fs/kernfs/dir.c:1246
vfs_mkdir+0x296/0x440 fs/namei.c:4121
do_mkdirat+0x1dc/0x450 fs/namei.c:4144
__do_sys_mkdirat fs/namei.c:4159 [inline]
__se_sys_mkdirat fs/namei.c:4157 [inline]
__x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4157
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f75d579c819
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:00007f75d66a9028 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f75d5a15fa0 RCX: 00007f75d579c819
RDX: 00000000000001ff RSI: 0000200000000000 RDI: ffffffffffffff9c
RBP: 00007f75d5832c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f75d5a16038 R14: 00007f75d5a15fa0 R15: 00007fff4d24b488
net_ratelimit: 2485 callbacks suppressed
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:1b, 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 veth0_to_bridge with own address as source address (addr:a2:a8:3b:f7:bd:db, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:a2:a8:3b:f7:bd:db, vlan:0)
net_ratelimit: 16883 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:a2:a8:3b:f7:bd:db, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:a2:a8:3b:f7:bd:db, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:a2:a8:3b:f7:bd:db, 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:1b, vlan:0)