bridge0: received packet on veth0_to_bridge with own address as source address (addr:8a:27:dc:78:9d:a9, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5839/1:b..l
rcu: (detected by 0, t=10503 jiffies, g=12145, q=1349 ncpus=2)
task:syz-executor state:R running task stack:20416 pid:5839 tgid:5839 ppid:5835 flags:0x00000000
Call Trace:
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0x184f/0x4c30 kernel/sched/core.c:6693
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7015
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:check_kcov_mode kernel/kcov.c:194 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x37/0x70 kernel/kcov.c:217
Code: c0 d7 03 00 65 8b 15 a0 ed 6e 7e 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 1c 16 00 00 00 74 2c 8b 91 f8 15 00 00 <83> fa 02 75 21 48 8b 91 00 16 00 00 48 8b 32 48 8d 7e 01 8b 89 fc
RSP: 0018:ffffc90003b8fa30 EFLAGS: 00000246
RAX: ffffffff8222aa62 RBX: 0000000000000000 RCX: ffff88802e583c00
RDX: 0000000000000000 RSI: ffffffff8e7de020 RDI: ffffffff8ea8eee0
RBP: ffff888012b3b5c4 R08: ffffffff82142ae1 R09: ffffffff821594ee
R10: 0000000000000002 R11: ffff88802e583c00 R12: dffffc0000000000
R13: 1ffff110025676bd R14: ffffffff8ea8eee0 R15: ffffffff8e7de020
make_vfsuid+0x52/0xa0 fs/mnt_idmapping.c:85
i_uid_into_vfsuid include/linux/fs.h:1436 [inline]
acl_permission_check fs/namei.c:352 [inline]
generic_permission+0xc6/0x550 fs/namei.c:414
do_inode_permission fs/namei.c:475 [inline]
inode_permission+0xa6/0x460 fs/namei.c:535
may_lookup fs/namei.c:1760 [inline]
link_path_walk+0x204/0xea0 fs/namei.c:2366
path_lookupat+0xa9/0x450 fs/namei.c:2579
filename_lookup+0x256/0x610 fs/namei.c:2609
user_path_at+0x3a/0x60 fs/namei.c:3016
ksys_umount fs/namespace.c:2033 [inline]
__do_sys_umount fs/namespace.c:2041 [inline]
__se_sys_umount fs/namespace.c:2039 [inline]
__x64_sys_umount+0xf1/0x170 fs/namespace.c:2039
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7a80d7fa47
RSP: 002b:00007ffe971ae488 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7a80d7fa47
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe971ae540
RBP: 00007ffe971ae540 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffe971af5c0
R13: 00007f7a80df15fc R14: 0000000000017529 R15: 00007ffe971af600
rcu: rcu_preempt kthread starved for 10483 jiffies! g12145 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:24816 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0x184f/0x4c30 kernel/sched/core.c:6693
__schedule_loop kernel/sched/core.c:6770 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6785
schedule_timeout+0x1be/0x310 kernel/time/timer.c:2615
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2045
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 16 Comm: ksoftirqd/0 Not tainted 6.12.0-rc7-syzkaller-00127-gea301aec8bb7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:fs_reclaim_acquire+0x0/0x130 mm/page_alloc.c:3860
Code: fe 48 c7 c7 80 74 a3 8e e9 9d 6d 80 ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 55 53 89 fd 65 48 8b 1c 25 c0 d7 03 00 48 83 c3 2c 48
RSP: 0018:ffffc90000157150 EFLAGS: 00000202
RAX: 048c06d474099600 RBX: 0000000000000820 RCX: ffff88801cec5a00
RDX: ffff88801cec5a00 RSI: 0000000000000820 RDI: 0000000000000820
RBP: 00000000000000b8 R08: ffffffff898fa702 R09: 0000000000000000
R10: ffff8880aa354b68 R11: ffffed101546a970 R12: 0000000000000000
R13: ffff88801da9bc80 R14: 0000000000000820 R15: ffffffff898fa7fd
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f22706656c0 CR3: 000000007dd24000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
might_alloc include/linux/sched/mm.h:318 [inline]
slab_pre_alloc_hook mm/slub.c:4036 [inline]
slab_alloc_node mm/slub.c:4114 [inline]
kmem_cache_alloc_noprof+0x3d/0x2a0 mm/slub.c:4141
__skb_ext_alloc net/core/skbuff.c:6924 [inline]
skb_ext_add+0x14d/0x910 net/core/skbuff.c:7027
nf_bridge_alloc include/net/netfilter/br_netfilter.h:12 [inline]
br_nf_pre_routing_ipv6+0x131/0x770 net/bridge/br_netfilter_ipv6.c:172
nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:277 [inline]
br_handle_frame+0x9fd/0x1530 net/bridge/br_input.c:424
__netif_receive_skb_core+0x13e8/0x4570 net/core/dev.c:5564
__netif_receive_skb_one_core net/core/dev.c:5668 [inline]
__netif_receive_skb+0x12f/0x650 net/core/dev.c:5783
process_backlog+0x662/0x15b0 net/core/dev.c:6115
__napi_poll+0xcb/0x490 net/core/dev.c:6779
napi_poll net/core/dev.c:6848 [inline]
net_rx_action+0x89b/0x1240 net/core/dev.c:6970
handle_softirqs+0x2c5/0x980 kernel/softirq.c:554
run_ksoftirqd+0xca/0x130 kernel/softirq.c:927
smpboot_thread_fn+0x544/0xa30 kernel/smpboot.c:164
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
bridge0: received packet on veth0_to_bridge with own address as source address (addr:8a:27:dc:78:9d:a9, vlan:0)
net_ratelimit: 37043 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:8a:27:dc:78:9d:a9, 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:8a:27:dc:78:9d:a9, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)