bridge0: received packet on veth0_to_bridge with own address as source address (addr:0a:6c:41:0d:f0:d3, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P26300/1:b..l P26325/1:b..l P26321/1:b..l
rcu: (detected by 1, t=10502 jiffies, g=196509, q=714 ncpus=1)
task:syz.1.4040 state:R running task stack:26232 pid:26321 tgid:26313 ppid:17470 task_flags:0x20400140 flags:0x00080001
Call Trace:
context_switch kernel/sched/core.c:5325 [inline]
__schedule+0x1190/0x5de0 kernel/sched/core.c:6929
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7256
irqentry_exit+0x36/0x90 kernel/entry/common.c:211
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:on_stack arch/x86/include/asm/stacktrace.h:56 [inline]
RIP: 0010:unwind_next_frame+0x1655/0x20a0 arch/x86/kernel/unwind_orc.c:665
Code: 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 29 05 00 00 49 8d 7d 10 49 8b 6d 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa <48> c1 ea 03 80 3c 02 00 0f 85 fc 04 00 00 49 8b 45 10 48 39 dd 0f
RSP: 0018:ffffc9000bae7018 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffffc9000bae7950 RCX: ffffc9000bae8000
RDX: ffffc9000bae7098 RSI: ffffc9000bae7930 RDI: ffffc9000bae7098
RBP: ffffc9000bae0000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000037e12 R12: ffffc9000bae70c8
R13: ffffc9000bae7088 R14: ffffc9000bae7930 R15: ffffc9000bae70bc
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:56
kasan_save_track+0x14/0x30 mm/kasan/common.c:77
unpoison_slab_object mm/kasan/common.c:342 [inline]
__kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:368
kasan_slab_alloc include/linux/kasan.h:252 [inline]
slab_post_alloc_hook mm/slub.c:4962 [inline]
slab_alloc_node mm/slub.c:5272 [inline]
kmem_cache_alloc_noprof+0x250/0x6e0 mm/slub.c:5279
mempool_alloc_noprof+0x179/0x390 mm/mempool.c:406
bio_alloc_bioset+0x410/0x8d0 block/bio.c:562
bio_alloc_clone block/bio.c:870 [inline]
bio_split+0x13b/0x440 block/bio.c:1708
bio_submit_split_bioset+0x31/0xa70 block/blk-merge.c:122
bio_submit_split+0xa8/0x160 block/blk-merge.c:152
__bio_split_to_limits block/blk.h:403 [inline]
blk_mq_submit_bio+0x67a/0x3380 block/blk-mq.c:3173
__submit_bio+0x3cf/0x690 block/blk-core.c:637
__submit_bio_noacct_mq block/blk-core.c:724 [inline]
submit_bio_noacct_nocheck+0x53d/0xc10 block/blk-core.c:755
submit_bio_noacct+0xbbb/0x1f60 block/blk-core.c:879
bio_chain_and_submit block/bio.c:362 [inline]
bio_chain_and_submit+0x2e/0x40 block/bio.c:358
__blkdev_issue_zero_pages+0x368/0x5d0 block/blk-lib.c:223
blkdev_issue_zero_pages block/blk-lib.c:239 [inline]
blkdev_issue_zeroout+0x3ab/0x840 block/blk-lib.c:326
blk_ioctl_zeroout block/ioctl.c:250 [inline]
blkdev_common_ioctl+0x155a/0x2470 block/ioctl.c:580
blkdev_ioctl+0x1cb/0x6d0 block/ioctl.c:699
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:597 [inline]
__se_sys_ioctl fs/ioctl.c:583 [inline]
__x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:583
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f277f98efc9
RSP: 002b:00007f2780891038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f277fbe6090 RCX: 00007f277f98efc9
RDX: 0000000000000000 RSI: 000000000000127f RDI: 000000000000000b
RBP: 00007f277fa11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f277fbe6128 R14: 00007f277fbe6090 R15: 00007ffc79527308
task:sed state:R running task stack:27256 pid:26325 tgid:26325 ppid:26323 task_flags:0x400000 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5325 [inline]
__schedule+0x1190/0x5de0 kernel/sched/core.c:6929
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7256
irqentry_exit+0x36/0x90 kernel/entry/common.c:211
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:lock_is_held_type+0x107/0x150 kernel/locking/lockdep.c:5945
Code: 00 00 b8 ff ff ff ff 65 0f c1 05 fc 1a 44 08 83 f8 01 75 2d 9c 58 f6 c4 02 75 43 48 f7 04 24 00 02 00 00 74 01 fb 48 83 c4 08 <44> 89 e8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 45 31 ed eb
RSP: 0000:ffffc9000ba87cd0 EFLAGS: 00000292
RAX: 0000000000000046 RBX: ffff88805740c7b0 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8da01492 RDI: ffffffff8bf07240
RBP: ffffffff8e3c42e0 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffff88805740bc80
R13: 0000000000000001 R14: 00000000ffffffff R15: 0000000000000000
vma_start_read+0x372/0x910 mm/mmap_lock.c:148
lock_vma_under_rcu+0x117/0x530 mm/mmap_lock.c:238
do_user_addr_fault+0x452/0x1370 arch/x86/mm/fault.c:1327
handle_page_fault arch/x86/mm/fault.c:1476 [inline]
exc_page_fault+0x64/0xc0 arch/x86/mm/fault.c:1532
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x7f9125c01608
RSP: 002b:00007fff755d4f40 EFLAGS: 00010202
RAX: 0000000000000040 RBX: 00007f9125c34310 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fff755d5440 R08: 0000000000000000 R09: 0000000000000000
R10: 00007f9125c34310 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000026a12a6fc66 R15: 0000000000000000
task:syz.6.4035 state:R running task stack:26856 pid:26300 tgid:26283 ppid:25610 task_flags:0x400140 flags:0x00080001
Call Trace:
context_switch kernel/sched/core.c:5325 [inline]
__schedule+0x1190/0x5de0 kernel/sched/core.c:6929
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7256
irqentry_exit+0x36/0x90 kernel/entry/common.c:211
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:lock_acquire+0x62/0x350 kernel/locking/lockdep.c:5872
Code: 7c 08 12 83 f8 07 0f 87 bc 02 00 00 89 c0 48 0f a3 05 b2 c6 e9 0e 0f 82 74 02 00 00 8b 35 0a f7 e9 0e 85 f6 0f 85 8d 00 00 00 <48> 8b 44 24 30 65 48 2b 05 c9 7b 08 12 0f 85 c7 02 00 00 48 83 c4
RSP: 0018:ffffc9000b0a7550 EFLAGS: 00000206
RAX: 0000000000000046 RBX: ffffffff8e3c42e0 RCX: 00000000ef9d33e4
RDX: 0000000000000000 RSI: ffffffff8da01492 RDI: ffffffff8bf07240
RBP: 0000000000000002 R08: 0ac0d5affe09d4ff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
rcu_read_lock include/linux/rcupdate.h:867 [inline]
__page_table_check_zero+0x13d/0x5d0 mm/page_table_check.c:138
page_table_check_free include/linux/page_table_check.h:43 [inline]
free_pages_prepare mm/page_alloc.c:1395 [inline]
__free_frozen_pages+0x7d0/0x1160 mm/page_alloc.c:2906
__folio_put+0x329/0x450 mm/swap.c:112
folio_put include/linux/mm.h:1425 [inline]
migrate_folio_done+0x236/0x2c0 mm/migrate.c:1189
migrate_folio_move mm/migrate.c:1403 [inline]
migrate_folios_move mm/migrate.c:1712 [inline]
migrate_pages_batch+0x1ca0/0x3bb0 mm/migrate.c:1968
migrate_pages_sync+0x12d/0x8a0 mm/migrate.c:1998
migrate_pages+0x1b5f/0x23a0 mm/migrate.c:2107
do_mbind+0x6e2/0xf20 mm/mempolicy.c:1539
kernel_mbind+0x1e3/0x1f0 mm/mempolicy.c:1682
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdc0ad8efc9
RSP: 002b:00007fdc0bc5a038 EFLAGS: 00000246 ORIG_RAX: 00000000000000ed
RAX: ffffffffffffffda RBX: 00007fdc0afe6180 RCX: 00007fdc0ad8efc9
RDX: 0000000100000000 RSI: 0000000100000004 RDI: 0000000000002000
RBP: 00007fdc0ae11f91 R08: 0000000000000006 R09: 0000000000000002
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdc0afe6218 R14: 00007fdc0afe6180 R15: 00007fff677dcbb8
rcu: rcu_preempt kthread starved for 10365 jiffies! g196509 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:28232 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5325 [inline]
__schedule+0x1190/0x5de0 kernel/sched/core.c:6929
__schedule_loop kernel/sched/core.c:7011 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:7026
schedule_timeout+0x123/0x290 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x1ea/0xaf0 kernel/rcu/tree.c:2083
rcu_gp_kthread+0x26d/0x380 kernel/rcu/tree.c:2285
kthread+0x3c5/0x780 kernel/kthread.c:463
ret_from_fork+0x675/0x7d0 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: 3409 Comm: kworker/R-bat_e Tainted: G U syzkaller #0 PREEMPT(full)
Tainted: [U]=USER
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Workqueue: bat_events batadv_dat_purge
RIP: 0010:rcu_lockdep_current_cpu_online+0x1e/0x150 kernel/rcu/tree.c:4029
Code: 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 65 8b 15 25 8c ff 11 81 e2 00 00 f0 00 b8 01 00 00 00 75 0a 8b 15 9e d7 e0 0e <85> d2 75 05 c3 cc cc cc cc 55 53 65 ff 05 00 8c ff 11 e8 eb c6 bb
RSP: 0018:ffffc90000a084e0 EFLAGS: 00000246
RAX: 0000000000000001 RBX: ffff888077689800 RCX: ffffffff8a088b8b
RDX: 0000000000000001 RSI: ffffffff8bf071c0 RDI: ffffffff8dcccee8
RBP: dffffc0000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001
R13: ffffc90000a087f8 R14: 0000000000000000 R15: ffff888027d140c8
FS: 0000000000000000(0000) GS:ffff888124b12000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000560575a8ea38 CR3: 000000007985e000 CR4: 00000000003526f0
Call Trace:
rcu_read_lock_held_common kernel/rcu/update.c:113 [inline]
rcu_read_lock_held+0x27/0x50 kernel/rcu/update.c:349
__find_rr_leaf+0x36c/0xe00 net/ipv6/route.c:833
find_rr_leaf net/ipv6/route.c:889 [inline]
rt6_select net/ipv6/route.c:933 [inline]
fib6_table_lookup+0x57c/0xa30 net/ipv6/route.c:2233
ip6_pol_route+0x1cc/0x1230 net/ipv6/route.c:2269
pol_lookup_func include/net/ip6_fib.h:617 [inline]
fib6_rule_lookup+0x536/0x720 net/ipv6/fib6_rules.c:120
ip6_route_input_lookup net/ipv6/route.c:2338 [inline]
ip6_route_input+0x662/0xc70 net/ipv6/route.c:2641
ip6_rcv_finish_core.constprop.0+0x1a0/0x5d0 net/ipv6/ip6_input.c:66
ip6_rcv_finish net/ipv6/ip6_input.c:77 [inline]
NF_HOOK include/linux/netfilter.h:318 [inline]
NF_HOOK include/linux/netfilter.h:312 [inline]
ipv6_rcv+0x1e8/0x650 net/ipv6/ip6_input.c:311
__netif_receive_skb_one_core+0x12d/0x1e0 net/core/dev.c:6079
__netif_receive_skb+0x1d/0x160 net/core/dev.c:6192
process_backlog+0x439/0x15e0 net/core/dev.c:6544
__napi_poll.constprop.0+0xba/0x550 net/core/dev.c:7594
napi_poll net/core/dev.c:7657 [inline]
net_rx_action+0x97f/0xef0 net/core/dev.c:7784
handle_softirqs+0x219/0x8e0 kernel/softirq.c:622
do_softirq kernel/softirq.c:523 [inline]
do_softirq+0xb2/0xf0 kernel/softirq.c:510
__local_bh_enable_ip+0x100/0x120 kernel/softirq.c:450
spin_unlock_bh include/linux/spinlock.h:396 [inline]
__batadv_dat_purge.part.0+0x279/0x3a0 net/batman-adv/distributed-arp-table.c:185
__batadv_dat_purge net/batman-adv/distributed-arp-table.c:166 [inline]
batadv_dat_purge+0x4b/0xa0 net/batman-adv/distributed-arp-table.c:204
process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3263
process_scheduled_works kernel/workqueue.c:3346 [inline]
rescuer_thread+0x620/0xea0 kernel/workqueue.c:3523
kthread+0x3c5/0x780 kernel/kthread.c:463
ret_from_fork+0x675/0x7d0 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
net_ratelimit: 12955 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: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 veth0_to_bridge with own address as source address (addr:0a:6c:41:0d:f0:d3, 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 veth0_to_bridge with own address as source address (addr:0a:6c:41:0d:f0:d3, 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)
net_ratelimit: 12738 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: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 veth0_to_bridge with own address as source address (addr:0a:6c:41:0d:f0:d3, 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 veth0_to_bridge with own address as source address (addr:0a:6c:41:0d:f0:d3, 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)