bridge0: received packet on veth0_to_bridge with own address as source address (addr:82:f1:c5:d8:63:aa, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:82:f1:c5:d8:63:aa, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P28526/1:b..l
rcu: (detected by 1, t=10502 jiffies, g=184621, q=746 ncpus=1)
task:syz.0.4702 state:R running task stack:27496 pid:28526 tgid:28519 ppid:17874 task_flags:0x400040 flags:0x00004000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x116f/0x5de0 kernel/sched/core.c:6767
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7090
irqentry_exit+0x36/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x62/0x350 kernel/locking/lockdep.c:5870
Code: 66 0e 12 83 f8 07 0f 87 bc 02 00 00 89 c0 48 0f a3 05 92 bf ee 0e 0f 82 74 02 00 00 8b 35 0a ef ee 0e 85 f6 0f 85 8d 00 00 00 <48> 8b 44 24 30 65 48 2b 05 69 66 0e 12 0f 85 c7 02 00 00 48 83 c4
RSP: 0018:ffffc9000af9f230 EFLAGS: 00000206
RAX: 0000000000000046 RBX: ffffffff8e3bf440 RCX: 00000000ef9d33e4
RDX: 0000000000000000 RSI: ffffffff8dbc43ac RDI: ffffffff8bf44f80
RBP: 0000000000000002 R08: 0ac0d5affe09d4ff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
rcu_read_lock include/linux/rcupdate.h:841 [inline]
class_rcu_constructor include/linux/rcupdate.h:1155 [inline]
unwind_next_frame+0xd1/0x20a0 arch/x86/kernel/unwind_orc.c:479
arch_stack_walk+0x94/0x100 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:319 [inline]
__kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:345
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4161 [inline]
slab_alloc_node mm/slub.c:4210 [inline]
kmem_cache_alloc_noprof+0x1cb/0x3b0 mm/slub.c:4217
alloc_buffer_head+0x21/0x160 fs/buffer.c:2997
folio_alloc_buffers+0x2bd/0x830 fs/buffer.c:924
create_empty_buffers+0x36/0x480 fs/buffer.c:1662
folio_create_buffers+0x109/0x150 fs/buffer.c:1773
__block_write_begin_int+0x320/0x16d0 fs/buffer.c:2097
iomap_write_begin+0x5de/0x1680 fs/iomap/buffered-io.c:825
iomap_write_iter fs/iomap/buffered-io.c:952 [inline]
iomap_file_buffered_write+0x43b/0xcb0 fs/iomap/buffered-io.c:1033
blkdev_buffered_write block/fops.c:690 [inline]
blkdev_write_iter+0x57d/0xdf0 block/fops.c:749
new_sync_write fs/read_write.c:591 [inline]
vfs_write+0x5ba/0x1180 fs/read_write.c:684
ksys_write+0x12a/0x240 fs/read_write.c:736
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0x230 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f60df98e969
RSP: 002b:00007f60e0866038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f60dfbb6080 RCX: 00007f60df98e969
RDX: 00000000fffffdef RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007f60dfa10ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f60dfbb6080 R15: 00007ffe7993cf78
</TASK>
rcu: rcu_preempt kthread starved for 250 jiffies! g184621 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:27704 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00004000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x116f/0x5de0 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:6860
schedule_timeout+0x123/0x290 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x1ea/0xb00 kernel/rcu/tree.c:2046
rcu_gp_kthread+0x270/0x380 kernel/rcu/tree.c:2248
kthread+0x3c2/0x780 kernel/kthread.c:464
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
</TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 UID: 0 PID: 3403 Comm: kworker/R-bat_e Not tainted 6.15.0-rc3-syzkaller-00032-ga79be02bba5c #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: bat_events batadv_tt_purge
RIP: 0010:debug_smp_processor_id+0xb/0x20 lib/smp_processor_id.c:60
Code: 65 ff 0d e8 f3 36 08 e9 40 ff ff ff 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 c7 c6 00 4f f4 8b <48> c7 c7 40 4f f4 8b e9 f9 fe ff ff 66 0f 1f 84 00 00 00 00 00 90
RSP: 0018:ffffc90000a08870 EFLAGS: 00000246
RAX: ffff888060171080 RBX: 0000000000000001 RCX: ffffffff8a30e2b7
RDX: 1ffff1100c02e213 RSI: ffffffff8bf44f00 RDI: ffff888060171098
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 1ffff92000141130
R13: 0000000000000001 R14: ffff88805008e000 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff888124abf000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055bfd5c2ad88 CR3: 000000007e8da000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
ip6t_do_table+0x2a2/0x1be0 net/ipv6/netfilter/ip6_tables.c:283
nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
nf_hook_slow+0xbb/0x200 net/netfilter/core.c:626
nf_hook.constprop.0+0x422/0x750 include/linux/netfilter.h:269
NF_HOOK include/linux/netfilter.h:312 [inline]
ipv6_rcv+0xa4/0x680 net/ipv6/ip6_input.c:309
__netif_receive_skb_one_core+0x12d/0x1e0 net/core/dev.c:5887
__netif_receive_skb+0x1d/0x160 net/core/dev.c:6000
process_backlog+0x442/0x15e0 net/core/dev.c:6352
__napi_poll.constprop.0+0xb7/0x550 net/core/dev.c:7324
napi_poll net/core/dev.c:7388 [inline]
net_rx_action+0xa97/0x1010 net/core/dev.c:7510
handle_softirqs+0x216/0x8e0 kernel/softirq.c:579
do_softirq kernel/softirq.c:480 [inline]
do_softirq+0xb2/0xf0 kernel/softirq.c:467
</IRQ>
<TASK>
__local_bh_enable_ip+0x100/0x120 kernel/softirq.c:407
spin_unlock_bh include/linux/spinlock.h:396 [inline]
batadv_tt_local_purge+0x21c/0x3c0 net/batman-adv/translation-table.c:1315
batadv_tt_purge+0x8b/0xb80 net/batman-adv/translation-table.c:3509
process_one_work+0x9cc/0x1b70 kernel/workqueue.c:3238
process_scheduled_works kernel/workqueue.c:3319 [inline]
rescuer_thread+0x620/0xea0 kernel/workqueue.c:3496
kthread+0x3c2/0x780 kernel/kthread.c:464
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
</TASK>
net_ratelimit: 14610 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:82:f1:c5:d8:63:aa, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:82:f1:c5:d8:63:aa, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:82:f1:c5:d8:63:aa, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:82:f1:c5:d8:63:aa, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:82:f1:c5:d8:63:aa, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:82:f1:c5:d8:63:aa, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:82:f1:c5:d8:63:aa, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:82:f1:c5:d8:63:aa, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:82:f1:c5:d8:63:aa, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:82:f1:c5:d8:63:aa, vlan:0)
net_ratelimit: 14745 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:82:f1:c5:d8:63:aa, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:82:f1:c5:d8:63:aa, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:82:f1:c5:d8:63:aa, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:82:f1:c5:d8:63:aa, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:82:f1:c5:d8:63:aa, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:82:f1:c5:d8:63:aa, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:82:f1:c5:d8:63:aa, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:82:f1:c5:d8:63:aa, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:82:f1:c5:d8:63:aa, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:82:f1:c5:d8:63:aa, vlan:0)