bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:1)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P2/1:b..l P14145/1:b..l P5291/1:b..l P5623/1:b..l P10887/3:b..l P10892/3:b..l
rcu: (detected by 1, t=10504 jiffies, g=40301, q=714 ncpus=2)
task:kworker/u8:21 state:R running task stack:24552 pid:10892 tgid:10892 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: krds_cp_wq#3/5 rds_connect_worker
Call Trace:
context_switch kernel/sched/core.c:5387 [inline]
__schedule+0x17b4/0x5680 kernel/sched/core.c:7188
preempt_schedule_common+0x82/0xd0 kernel/sched/core.c:7369
preempt_schedule_thunk+0x16/0x30 arch/x86/entry/thunk.S:12
__local_bh_enable_ip+0xe1/0x130 kernel/softirq.c:457
local_bh_enable include/linux/bottom_half.h:33 [inline]
ip6t_do_table+0x137d/0x1560 net/ipv6/netfilter/ip6_tables.c:375
nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
nf_hook_slow+0xc5/0x220 net/netfilter/core.c:619
nf_hook+0x22a/0x3a0 include/linux/netfilter.h:273
NF_HOOK include/linux/netfilter.h:316 [inline]
ip6_xmit+0x112b/0x1af0 net/ipv6/ip6_output.c:379
inet6_csk_xmit+0x3bd/0x6c0 net/ipv6/inet6_connection_sock.c:115
__tcp_transmit_skb+0x26dd/0x4790 net/ipv4/tcp_output.c:1715
tcp_transmit_skb net/ipv4/tcp_output.c:1733 [inline]
tcp_connect+0x227d/0x53a0 net/ipv4/tcp_output.c:4373
tcp_v6_connect+0x128d/0x1b10 net/ipv6/tcp_ipv6.c:336
__inet_stream_connect+0x25a/0xdd0 net/ipv4/af_inet.c:684
inet_stream_connect+0x66/0xa0 net/ipv4/af_inet.c:755
kernel_connect+0x141/0x1c0 net/socket.c:3740
rds_tcp_conn_path_connect+0x6f6/0x930 net/rds/tcp_connect.c:205
rds_connect_worker+0x1d8/0x290 net/rds/threads.c:176
process_one_work kernel/workqueue.c:3302 [inline]
process_scheduled_works+0xb5d/0x1860 kernel/workqueue.c:3385
worker_thread+0xa53/0xfc0 kernel/workqueue.c:3466
kthread+0x388/0x470 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
task:kworker/u8:17 state:R running task stack:25416 pid:10887 tgid:10887 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: krds_cp_wq#3/3 rds_connect_worker
Call Trace:
context_switch kernel/sched/core.c:5387 [inline]
__schedule+0x17b4/0x5680 kernel/sched/core.c:7188
preempt_schedule_common+0x82/0xd0 kernel/sched/core.c:7369
preempt_schedule_thunk+0x16/0x30 arch/x86/entry/thunk.S:12
__local_bh_enable_ip+0xe1/0x130 kernel/softirq.c:457
local_bh_enable include/linux/bottom_half.h:33 [inline]
ip6t_do_table+0x137d/0x1560 net/ipv6/netfilter/ip6_tables.c:375
nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
nf_hook_slow+0xc5/0x220 net/netfilter/core.c:619
nf_hook+0x22a/0x3a0 include/linux/netfilter.h:273
NF_HOOK include/linux/netfilter.h:316 [inline]
ip6_xmit+0x112b/0x1af0 net/ipv6/ip6_output.c:379
inet6_csk_xmit+0x3bd/0x6c0 net/ipv6/inet6_connection_sock.c:115
__tcp_transmit_skb+0x26dd/0x4790 net/ipv4/tcp_output.c:1715
tcp_transmit_skb net/ipv4/tcp_output.c:1733 [inline]
tcp_connect+0x227d/0x53a0 net/ipv4/tcp_output.c:4373
tcp_v6_connect+0x128d/0x1b10 net/ipv6/tcp_ipv6.c:336
__inet_stream_connect+0x25a/0xdd0 net/ipv4/af_inet.c:684
inet_stream_connect+0x66/0xa0 net/ipv4/af_inet.c:755
kernel_connect+0x141/0x1c0 net/socket.c:3740
rds_tcp_conn_path_connect+0x6f6/0x930 net/rds/tcp_connect.c:205
rds_connect_worker+0x1d8/0x290 net/rds/threads.c:176
process_one_work kernel/workqueue.c:3302 [inline]
process_scheduled_works+0xb5d/0x1860 kernel/workqueue.c:3385
worker_thread+0xa53/0xfc0 kernel/workqueue.c:3466
kthread+0x388/0x470 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
task:syz-executor state:R running task stack:21544 pid:5623 tgid:5623 ppid:5616 task_flags:0x400140 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5387 [inline]
__schedule+0x17b4/0x5680 kernel/sched/core.c:7188
preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7512
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:547 [inline]
irqentry_exit+0x14f/0x730 kernel/entry/common.c:164
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:__asan_memset+0x5/0x50 mm/kasan/shadow.c:83
Code: 01 00 00 00 e9 5c e5 ff ff 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 <41> 56 53 48 89 d3 89 f5 49 89 fe 48 8b 4c 24 18 48 89 d6 ba 01 00
RSP: 0018:ffffc90003d472c8 EFLAGS: 00000246
RAX: 1ffff920007a8e7c RBX: ffffc90003d473f8 RCX: 1ffff920007a8e01
RDX: 0000000000000010 RSI: 0000000000000000 RDI: ffffc90003d473f8
RBP: dffffc0000000000 R08: 000000000000000c R09: ffffffff8e95cd60
R10: ffffc90003d473f8 R11: ffffffff81b0d880 R12: ffffc90003d477d0
R13: 1ffff920007a8e77 R14: ffffc90003d473a8 R15: ffffc90003d473f0
unwind_next_frame+0xf33/0x2550 arch/x86/kernel/unwind_orc.c:621
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:165
__reset_page_owner+0x71/0x1f0 mm/page_owner.c:320
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1402 [inline]
__free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943
__slab_free+0x274/0x2c0 mm/slub.c:5608
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:350
kasan_slab_alloc include/linux/kasan.h:253 [inline]
slab_post_alloc_hook mm/slub.c:4569 [inline]
slab_alloc_node mm/slub.c:4898 [inline]
__do_kmalloc_node mm/slub.c:5294 [inline]
__kmalloc_noprof+0x316/0x760 mm/slub.c:5307
kmalloc_noprof include/linux/slab.h:954 [inline]
kzalloc_noprof include/linux/slab.h:1188 [inline]
tomoyo_encode2 security/tomoyo/realpath.c:45 [inline]
tomoyo_encode+0x28b/0x550 security/tomoyo/realpath.c:80
tomoyo_realpath_from_path+0x58d/0x5d0 security/tomoyo/realpath.c:283
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_path_perm+0x283/0x560 security/tomoyo/file.c:827
security_inode_getattr+0x12b/0x310 security/security.c:1895
vfs_getattr+0x23/0x70 fs/stat.c:259
vfs_statx_path+0x2b/0x230 fs/stat.c:299
vfs_statx+0x12e/0x200 fs/stat.c:356
vfs_fstatat+0x11b/0x170 fs/stat.c:373
__do_sys_newfstatat fs/stat.c:538 [inline]
__se_sys_newfstatat fs/stat.c:532 [inline]
__x64_sys_newfstatat+0x151/0x200 fs/stat.c:532
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f32fef9b41a
RSP: 002b:00007ffea2e13288 EFLAGS: 00000286 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f32fef9b41a
RDX: 00007ffea2e132b0 RSI: 00007ffea2e13340 RDI: 00000000ffffff9c
RBP: 00007ffea2e13340 R08: 00007ffea2e14340 R09: 00000000ffffffff
R10: 0000000000000100 R11: 0000000000000286 R12: 00007ffea2e143d0
R13: 00007f32ff032120 R14: 00000000000698e3 R15: 00007ffea2e14410
task:dhcpcd state:R running task stack:21368 pid:5291 tgid:5291 ppid:5290 task_flags:0x400140 flags:0x00080801
Call Trace:
context_switch kernel/sched/core.c:5387 [inline]
__schedule+0x17b4/0x5680 kernel/sched/core.c:7188
preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7512
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:547 [inline]
irqentry_exit+0x14f/0x730 kernel/entry/common.c:164
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:deref_stack_reg arch/x86/kernel/unwind_orc.c:422 [inline]
RIP: 0010:unwind_next_frame+0xeed/0x2550 arch/x86/kernel/unwind_orc.c:614
Code: 96 c0 20 c8 3c 01 0f 85 54 0c 00 00 48 89 df e8 c9 22 00 00 48 89 c3 48 bd 00 00 00 00 00 fc ff df 48 8b 44 24 30 80 3c 28 00 <4c> 8b 7c 24 10 74 08 4c 89 ff e8 e4 ee b9 00 49 89 1f 48 8b 44 24
RSP: 0018:ffffc90002e776b8 EFLAGS: 00000246
RAX: 1ffff920005cef06 RBX: ffffffff81b0d819 RCX: 1ffff920005cee01
RDX: ffffffff90c3e902 RSI: 0000000000000002 RDI: ffffc90002e77878
RBP: dffffc0000000000 R08: 0000000000000007 R09: ffffffff8e95cd60
R10: ffffc90002e77838 R11: fffff520005cef09 R12: ffffc90002e78000
R13: 1ffff920005ceeff R14: ffffc90002e777e8 R15: ffffc90002e70000
__unwind_start+0x5b8/0x760 arch/x86/kernel/unwind_orc.c:787
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0xe3/0x150 arch/x86/kernel/stacktrace.c:24
stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
save_stack+0x122/0x230 mm/page_owner.c:165
__reset_page_owner+0x71/0x1f0 mm/page_owner.c:320
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1402 [inline]
__free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943
__slab_free+0x274/0x2c0 mm/slub.c:5608
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:350
kasan_slab_alloc include/linux/kasan.h:253 [inline]
slab_post_alloc_hook mm/slub.c:4569 [inline]
slab_alloc_node mm/slub.c:4898 [inline]
kmem_cache_alloc_noprof+0x2bc/0x650 mm/slub.c:4905
lsm_file_alloc security/security.c:171 [inline]
security_file_alloc+0x34/0x310 security/security.c:2406
init_file+0x90/0x2b0 fs/file_table.c:184
alloc_empty_file+0x74/0x1d0 fs/file_table.c:266
alloc_file fs/file_table.c:396 [inline]
alloc_file_pseudo+0x155/0x240 fs/file_table.c:425
sock_alloc_file+0xb8/0x2e0 net/socket.c:543
__sys_socketpair+0x2da/0x560 net/socket.c:1893
__do_sys_socketpair net/socket.c:1922 [inline]
__se_sys_socketpair net/socket.c:1919 [inline]
__x64_sys_socketpair+0x9b/0xb0 net/socket.c:1919
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc1ea9ac73a
RSP: 002b:00007ffcdf492908 EFLAGS: 00000246 ORIG_RAX: 0000000000000035
RAX: ffffffffffffffda RBX: 000055d6ab658920 RCX: 00007fc1ea9ac73a
RDX: 0000000000000000 RSI: 0000000000080805 RDI: 0000000000000001
RBP: 00007ffcdf4b2d30 R08: 0000000000000000 R09: 0000000000000001
R10: 00007ffcdf492920 R11: 0000000000000246 R12: 00007ffcdf492920
R13: 0000000000000001 R14: 0000000000000000 R15: 000055d670d82ac0
task:syz.1.2159 state:R running task stack:24792 pid:14145 tgid:14144 ppid:5636 task_flags:0x400140 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5387 [inline]
__schedule+0x17b4/0x5680 kernel/sched/core.c:7188
preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7512
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:547 [inline]
irqentry_exit+0x14f/0x730 kernel/entry/common.c:164
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:lock_acquire+0x221/0x350 kernel/locking/lockdep.c:5872
Code: ff ff ff e8 e1 54 06 0a f7 44 24 08 00 02 00 00 0f 84 3a ff ff ff 65 48 8b 05 cb 2f 97 11 48 3b 44 24 58 75 33 fb 48 83 c4 60 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 8d 3d 98 50 92
RSP: 0018:ffffc9000650f018 EFLAGS: 00000286
RAX: c3414b8f41112600 RBX: 0000000000000000 RCX: 0000000000000046
RDX: 000000002e67de2a RSI: ffffffff8e2176f3 RDI: ffffffff8c28aa60
RBP: ffffffff8176e256 R08: ffffffff8176e256 R09: ffffffff8e95cd60
R10: ffffc9000650f178 R11: ffffffff81b0d880 R12: 0000000000000002
R13: ffffffff8e95cd60 R14: 0000000000000000 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
rcu_read_lock include/linux/rcupdate.h:838 [inline]
class_rcu_constructor include/linux/rcupdate.h:1181 [inline]
unwind_next_frame+0xc3/0x2550 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:165
__reset_page_owner+0x71/0x1f0 mm/page_owner.c:320
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1402 [inline]
__free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943
__slab_free+0x274/0x2c0 mm/slub.c:5608
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_kmalloc+0x22/0xb0 mm/kasan/common.c:406
kasan_kmalloc include/linux/kasan.h:263 [inline]
__do_kmalloc_node mm/slub.c:5295 [inline]
__kvmalloc_node_noprof+0x528/0x8a0 mm/slub.c:6828
allocate_hook_entries_size net/netfilter/core.c:54 [inline]
__nf_hook_entries_try_shrink+0x328/0x700 net/netfilter/core.c:253
__nf_unregister_net_hook+0x4cc/0x6f0 net/netfilter/core.c:513
nf_unregister_net_hook net/netfilter/core.c:-1 [inline]
nf_unregister_net_hooks+0xcb/0x140 net/netfilter/core.c:606
nf_ct_netns_do_put net/netfilter/nf_conntrack_proto.c:537 [inline]
nf_ct_netns_put+0x36d/0x520 net/netfilter/nf_conntrack_proto.c:-1
cleanup_entry+0x298/0x360 net/ipv6/netfilter/ip6_tables.c:669
translate_table+0x1ecd/0x20b0 net/ipv6/netfilter/ip6_tables.c:744
do_replace net/ipv6/netfilter/ip6_tables.c:1154 [inline]
do_ip6t_set_ctl+0x9fe/0xe10 net/ipv6/netfilter/ip6_tables.c:1644
nf_setsockopt+0x26f/0x290 net/netfilter/nf_sockopt.c:101
rawv6_setsockopt+0x276/0x5f0 net/ipv6/raw.c:1048
do_sock_setsockopt+0x17c/0x1b0 net/socket.c:2381
__sys_setsockopt net/socket.c:2406 [inline]
__do_sys_setsockopt net/socket.c:2412 [inline]
__se_sys_setsockopt net/socket.c:2409 [inline]
__x64_sys_setsockopt+0x13d/0x1b0 net/socket.c:2409
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5ae8f9cdd9
RSP: 002b:00007f5ae9e1f028 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007f5ae9215fa0 RCX: 00007f5ae8f9cdd9
RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000004
RBP: 00007f5ae9032d69 R08: 0000000000000528 R09: 0000000000000000
R10: 0000200000000440 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5ae9216038 R14: 00007f5ae9215fa0 R15: 00007fff31f0ca28
task:kthreadd state:R running task stack:26040 pid:2 tgid:2 ppid:0 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5387 [inline]
__schedule+0x17b4/0x5680 kernel/sched/core.c:7188
preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7512
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:547 [inline]
irqentry_exit+0x14f/0x730 kernel/entry/common.c:164
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:__orc_find arch/x86/kernel/unwind_orc.c:103 [inline]
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:238 [inline]
RIP: 0010:unwind_next_frame+0x523/0x2550 arch/x86/kernel/unwind_orc.c:510
Code: 4c 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 84 c0 75 27 49 63 07 4c 01 f8 49 8d 4f 04 4c 39 e0 48 0f 46 e9 <49> 8d 47 fc 48 0f 47 d8 4d 0f 46 ef 48 39 dd 76 a2 e9 7b fd ff ff
RSP: 0018:ffffc900000772b8 EFLAGS: 00000206
RAX: ffffffff84627df4 RBX: ffffffff9069eb9c RCX: ffffffff9069eb90
RDX: ffffffff9069eb80 RSI: ffffffff90f6165a RDI: ffffffff8c28aa00
RBP: ffffffff9069eb80 R08: 0000000000000008 R09: ffffffff8e95cd60
R10: ffffc900000773d8 R11: ffffffff81b0d880 R12: ffffffff84627d31
R13: ffffffff9069eb80 R14: ffffc90000077388 R15: ffffffff9069eb8c
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:165
__reset_page_owner+0x71/0x1f0 mm/page_owner.c:320
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1402 [inline]
__free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943
__slab_free+0x274/0x2c0 mm/slub.c:5608
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_kmalloc+0x22/0xb0 mm/kasan/common.c:406
kasan_kmalloc include/linux/kasan.h:263 [inline]
__do_kmalloc_node mm/slub.c:5295 [inline]
__kmalloc_noprof+0x35c/0x760 mm/slub.c:5307
kmalloc_noprof include/linux/slab.h:954 [inline]
kzalloc_noprof include/linux/slab.h:1188 [inline]
lsm_blob_alloc security/security.c:218 [inline]
lsm_cred_alloc security/security.c:235 [inline]
security_prepare_creds+0x52/0x360 security/security.c:2866
prepare_creds+0x57d/0x820 kernel/cred.c:215
copy_creds+0x10e/0xa30 kernel/cred.c:286
copy_process+0xd6c/0x4450 kernel/fork.c:2123
kernel_clone+0x284/0x8f0 kernel/fork.c:2723
kernel_thread+0x13f/0x1b0 kernel/fork.c:2784
create_kthread kernel/kthread.c:459 [inline]
kthreadd+0x4ec/0x6e0 kernel/kthread.c:817
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: rcu_preempt kthread starved for 10587 jiffies! g40301 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:26784 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5387 [inline]
__schedule+0x17b4/0x5680 kernel/sched/core.c:7188
__schedule_loop kernel/sched/core.c:7267 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7282
schedule_timeout+0x158/0x2c0 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x312/0x11d0 kernel/rcu/tree.c:2095
rcu_gp_kthread+0x9e/0x2b0 kernel/rcu/tree.c:2297
kthread+0x388/0x470 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:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 5749 Comm: kworker/0:8 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Workqueue: events ovs_dp_masks_rebalance
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:109 [inline]
RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:127 [inline]
RIP: 0010:lock_is_held_type+0x4b/0x150 kernel/locking/lockdep.c:5936
Code: 8b 05 39 1e 91 07 85 c0 0f 85 d5 00 00 00 65 4c 8b 2d 81 d8 90 07 41 83 bd 8c 0b 00 00 00 0f 85 bf 00 00 00 89 f5 49 89 fe 9c <41> 5c fa 48 c7 c7 ef da fb 8d e8 b6 19 00 00 65 ff 05 ff 1d 91 07
RSP: 0018:ffffc90000006dc0 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 00000000ffffffff RCX: 0000000000010100
RDX: ffff88801f2f3d80 RSI: 00000000ffffffff RDI: ffff8880b8628298
RBP: 00000000ffffffff R08: ffff888028c2f317 R09: 0000000000000000
R10: ffff888028c2f308 R11: ffffed1005185e63 R12: ffff8880b8628280
R13: ffff88801f2f3d80 R14: ffff8880b8628298 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff888125293000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000000c0 CR3: 000000007f33a000 CR4: 00000000003526f0
Call Trace:
lock_is_held include/linux/lockdep.h:249 [inline]
__run_hrtimer kernel/time/hrtimer.c:1896 [inline]
__hrtimer_run_queues+0x20c/0xa20 kernel/time/hrtimer.c:1994
hrtimer_interrupt+0x44b/0x950 kernel/time/hrtimer.c:2113
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
__sysvec_apic_timer_interrupt+0x102/0x430 arch/x86/kernel/apic/apic.c:1067
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline]
sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1061
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:console_trylock_spinning kernel/printk/printk.c:2039 [inline]
RIP: 0010:vprintk_emit+0x45d/0x560 kernel/printk/printk.c:2478
Code: 0f 84 44 ff ff ff e8 72 1e 21 00 fb eb 44 e8 6a 1e 21 00 e8 d5 6f 03 0a 4d 85 f6 74 94 e8 5b 1e 21 00 fb 48 c7 c7 a0 f1 94 8e <31> f6 ba 01 00 00 00 31 c9 41 b8 01 00 00 00 45 31 c9 53 e8 cb 18
RSP: 0018:ffffc900000070e0 EFLAGS: 00000246
RAX: ffffffff81a48555 RBX: ffffffff81a483cf RCX: ffff88801f2f3d80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffffffff8e94f1a0
RBP: ffffc90000007190 R08: ffffffff90309af7 R09: 1ffffffff206135e
R10: dffffc0000000000 R11: fffffbfff206135f R12: 0000000000000000
R13: 000000000000006e R14: 0000000000000200 R15: 1ffff92000000e20
_printk+0xdd/0x130 kernel/printk/printk.c:2504
br_fdb_update+0x62d/0x690 net/bridge/br_fdb.c:986
br_handle_frame_finish+0x573/0x1c80 net/bridge/br_input.c:144
br_nf_hook_thresh+0x3dd/0x4c0 net/bridge/br_netfilter_hooks.c:-1
br_nf_pre_routing_finish_ipv6+0x91f/0xc30 net/bridge/br_netfilter_ipv6.c:-1
NF_HOOK include/linux/netfilter.h:318 [inline]
br_nf_pre_routing_ipv6+0x374/0x6f0 net/bridge/br_netfilter_ipv6.c:183
nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:291 [inline]
br_handle_frame+0x1277/0x1510 net/bridge/br_input.c:442
__netif_receive_skb_core+0x98f/0x3170 net/core/dev.c:6089
__netif_receive_skb_one_core net/core/dev.c:6200 [inline]
__netif_receive_skb net/core/dev.c:6315 [inline]
process_backlog+0x76d/0x1950 net/core/dev.c:6666
__napi_poll+0xae/0x340 net/core/dev.c:7730
napi_poll net/core/dev.c:7793 [inline]
net_rx_action+0x627/0xf70 net/core/dev.c:7950
handle_softirqs+0x22a/0x840 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xca/0x220 kernel/softirq.c:735
irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:_compound_head include/linux/page-flags.h:247 [inline]
RIP: 0010:page_slab mm/slab.h:134 [inline]
RIP: 0010:virt_to_slab mm/slab.h:168 [inline]
RIP: 0010:qlink_to_cache mm/kasan/quarantine.c:131 [inline]
RIP: 0010:qlist_free_all+0x4a/0x100 mm/kasan/quarantine.c:176
Code: 89 ef 4d 89 f4 4d 85 f6 75 42 4c 8b 25 cf be f4 0b 4c 89 ff e8 b7 c2 47 ff 48 c1 e8 06 48 83 e0 c0 49 8d 0c 04 49 8b 44 04 08 <89> c2 83 e2 01 48 ff ca 48 09 c2 48 21 ca 0f b6 42 33 c1 e0 18 3d
RSP: 0018:ffffc90004f17910 EFLAGS: 00000206
RAX: ffff88814044ab40 RBX: ffffc90004f17948 RCX: ffffea0001edfb00
RDX: 0000000000000007 RSI: ffffffff8dfa40d5 RDI: ffff88807b7ec200
RBP: ffff88807b7ec200 R08: ffffffff90309af7 R09: 1ffffffff206135e
R10: dffffc0000000000 R11: fffffbfff206135f R12: ffffea0000000000
R13: 0000000000000000 R14: 0000000000000000 R15: ffff88807b7ec200
kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
__kasan_kmalloc+0x22/0xb0 mm/kasan/common.c:406
kasan_kmalloc include/linux/kasan.h:263 [inline]
__do_kmalloc_node mm/slub.c:5295 [inline]
__kmalloc_noprof+0x35c/0x760 mm/slub.c:5307
kmalloc_noprof include/linux/slab.h:954 [inline]
ovs_flow_masks_rebalance+0xf9/0xc30 net/openvswitch/flow_table.c:1112
ovs_dp_masks_rebalance+0x56/0xe0 net/openvswitch/datapath.c:2593
process_one_work kernel/workqueue.c:3302 [inline]
process_scheduled_works+0xb5d/0x1860 kernel/workqueue.c:3385
worker_thread+0xa53/0xfc0 kernel/workqueue.c:3466
kthread+0x388/0x470 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
bridge0: received packet on veth0_to_bridge with own address as source address (addr:d6:e3:6f:99:05:64, vlan:1)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:1)
net_ratelimit: 13507 callbacks suppressed
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:1)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:d6:e3:6f:99:05:64, vlan:1)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:1)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:1)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:d6:e3:6f:99:05:64, vlan:1)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:1)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:1)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:1)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:1)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:d6:e3:6f:99:05:64, vlan:1)