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)
net_ratelimit: 14066 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 veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5213/1:b..l P5947/1:b..l P5202/1:b..l
rcu: (detected by 0, t=10503 jiffies, g=37285, q=310 ncpus=2)
task:klogd state:R running task stack:23624 pid:5202 tgid:5202 ppid:1 task_flags:0x400100 flags:0x00000002
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x1b88/0x5240 kernel/sched/core.c:6767
preempt_schedule_irq+0xfe/0x1c0 kernel/sched/core.c:7090
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:185 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:246 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x2f/0x90 kernel/kcov.c:314
Code: 8b 04 24 65 48 8b 14 25 08 60 68 93 65 8b 05 b8 9e a5 11 25 00 01 ff 00 74 10 3d 00 01 00 00 75 5b 83 ba 3c 16 00 00 00 74 52 <8b> 82 18 16 00 00 83 f8 03 75 47 48 8b 8a 20 16 00 00 44 8b 8a 1c
RSP: 0018:ffffc9000309f450 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffff88807b1abc00
RDX: ffff88807b1abc00 RSI: 0000000000000001 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff8238c9d9 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffea0001a31488
R13: ffffea0001a31480 R14: 0000000000000000 R15: ffffffff8238c9a8
rcu_read_lock include/linux/rcupdate.h:842 [inline]
__page_table_check_zero+0xe9/0x510 mm/page_table_check.c:138
page_table_check_free include/linux/page_table_check.h:41 [inline]
free_pages_prepare mm/page_alloc.c:1263 [inline]
__free_frozen_pages+0xdfc/0x10a0 mm/page_alloc.c:2725
discard_slab mm/slub.c:2730 [inline]
__put_partials+0x160/0x1c0 mm/slub.c:3199
put_cpu_partial+0x17e/0x250 mm/slub.c:3274
__slab_free+0x294/0x390 mm/slub.c:4526
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:329
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_node_noprof+0x1f2/0x3b0 mm/slub.c:4262
__alloc_skb+0x1c2/0x480 net/core/skbuff.c:658
alloc_skb include/linux/skbuff.h:1340 [inline]
alloc_skb_with_frags+0xc3/0x830 net/core/skbuff.c:6639
sock_alloc_send_pskb+0x91c/0xa70 net/core/sock.c:2954
unix_dgram_sendmsg+0x6d4/0x1ea0 net/unix/af_unix.c:2007
sock_sendmsg_nosec net/socket.c:712 [inline]
__sock_sendmsg+0x221/0x270 net/socket.c:727
__sys_sendto+0x365/0x4c0 net/socket.c:2180
__do_sys_sendto net/socket.c:2187 [inline]
__se_sys_sendto net/socket.c:2183 [inline]
__x64_sys_sendto+0xde/0x100 net/socket.c:2183
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf3/0x210 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f78333a49b5
RSP: 002b:00007ffe3d0102b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f78333a49b5
RDX: 00000000000000a1 RSI: 000055965b8f1b80 RDI: 0000000000000003
RBP: 000055965b8eb910 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000013
R13: 00007f7833532212 R14: 00007ffe3d0103b8 R15: 0000000000000000
task:udevd state:R running task stack:23840 pid:5947 tgid:5947 ppid:5213 task_flags:0x400140 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x1b88/0x5240 kernel/sched/core.c:6767
preempt_schedule_irq+0xfe/0x1c0 kernel/sched/core.c:7090
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:unwind_next_frame+0x11c/0x23b0 include/linux/rcupdate.h:-1
Code: 74 28 80 3d d1 0e dc 0e 00 75 1f c6 05 c8 0e dc 0e 01 48 c7 c7 40 22 48 8c be 4b 03 00 00 48 c7 c2 80 22 48 8c e8 b4 f9 30 00 <48> 89 5c 24 28 49 8d 5c 24 50 48 89 d8 48 c1 e8 03 48 89 44 24 40
RSP: 0018:ffffc9000ab57568 EFLAGS: 00000202
RAX: 0000000000000001 RBX: 1ffff9200156aed4 RCX: ffff8880278d5a00
RDX: 0000000000000000 RSI: ffffffff8ca1b660 RDI: ffffffff8ca1b620
RBP: ffffc9000ab576d8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffc9000ab576a0
R13: dffffc0000000000 R14: ffffffff8163dad7 R15: ffffffff816d9bc8
__unwind_start+0x59a/0x740 arch/x86/kernel/unwind_orc.c:758
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0xe7/0x150 arch/x86/kernel/stacktrace.c:24
stack_trace_save+0x11a/0x1d0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:576
poison_slab_object mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x59/0x70 mm/kasan/common.c:264
kasan_slab_free include/linux/kasan.h:233 [inline]
slab_free_hook mm/slub.c:2398 [inline]
slab_free mm/slub.c:4656 [inline]
kfree+0x198/0x430 mm/slub.c:4855
uevent_show+0x1fa/0x340 drivers/base/core.c:2741
dev_attr_show+0x55/0xc0 drivers/base/core.c:2424
sysfs_kf_seq_show+0x32b/0x4a0 fs/sysfs/file.c:65
seq_read_iter+0x461/0xda0 fs/seq_file.c:230
new_sync_read fs/read_write.c:489 [inline]
vfs_read+0x9a0/0xb90 fs/read_write.c:570
ksys_read+0x19d/0x2d0 fs/read_write.c:713
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf3/0x210 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0188116b6a
RSP: 002b:00007ffee291d928 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000563dd3751e70 RCX: 00007f0188116b6a
RDX: 0000000000001000 RSI: 0000563dd3755700 RDI: 0000000000000008
RBP: 0000563dd3751e70 R08: 0000000000000008 R09: 0000000000000020
R10: 000000000000010f R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000003fff R14: 00007ffee291de08 R15: 000000000000000a
task:udevd state:R running task stack:22600 pid:5213 tgid:5213 ppid:1 task_flags:0x400140 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x1b88/0x5240 kernel/sched/core.c:6767
preempt_schedule_irq+0xfe/0x1c0 kernel/sched/core.c:7090
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:unwind_next_frame+0x564/0x23b0 arch/x86/kernel/unwind_orc.c:515
Code: 00 0f 85 21 17 00 00 41 0f b7 1f c1 eb 0b 80 e3 01 48 8b 44 24 20 42 0f b6 04 28 84 c0 0f 85 24 17 00 00 48 8b 44 24 08 88 18 <41> 0f b7 1f 83 e3 0f 83 fb 05 0f 8f 94 00 00 00 83 fb 03 0f 8f 1f
RSP: 0018:ffffc9000304f1c8 EFLAGS: 00000246
RAX: ffffc9000304f2d5 RBX: 0000000000000000 RCX: ffffffff907c63f8
RDX: ffffffff90f8d842 RSI: ffffffff8ca1b660 RDI: ffffffff8ca1b620
RBP: ffffffff90f8d842 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffc9000304f2a0
R13: dffffc0000000000 R14: ffffc9000304f2d8 R15: ffffffff90f8d846
arch_stack_walk+0x11e/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x11a/0x1d0 kernel/stacktrace.c:122
save_stack+0xfc/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x76/0x1e0 mm/page_owner.c:308
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1262 [inline]
__free_frozen_pages+0xde8/0x10a0 mm/page_alloc.c:2725
__slab_free+0x2c6/0x390 mm/slub.c:4567
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:329
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]
__kmalloc_cache_noprof+0x1c8/0x370 mm/slub.c:4367
kmalloc_noprof include/linux/slab.h:905 [inline]
kzalloc_noprof include/linux/slab.h:1039 [inline]
kernfs_fop_open+0x3a3/0xdf0 fs/kernfs/file.c:623
do_dentry_open+0xdec/0x1960 fs/open.c:956
vfs_open+0x3b/0x370 fs/open.c:1086
do_open fs/namei.c:3880 [inline]
path_openat+0x2caf/0x35d0 fs/namei.c:4039
do_filp_open+0x284/0x4e0 fs/namei.c:4066
do_sys_openat2+0x12b/0x1d0 fs/open.c:1429
do_sys_open fs/open.c:1444 [inline]
__do_sys_openat fs/open.c:1460 [inline]
__se_sys_openat fs/open.c:1455 [inline]
__x64_sys_openat+0x249/0x2a0 fs/open.c:1455
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf3/0x210 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f01881169a4
RSP: 002b:00007ffee2921f80 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 00007f01881169a4
RDX: 0000000000080000 RSI: 00007ffee29220b8 RDI: 00000000ffffff9c
RBP: 00007ffee29220b8 R08: 0000000000000008 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000080000
R13: 0000563dcd359b42 R14: 0000000000000001 R15: 0000000000000000
rcu: rcu_preempt kthread starved for 7037 jiffies! g37285 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:26952 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x1b88/0x5240 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0x163/0x360 kernel/sched/core.c:6860
schedule_timeout+0x15b/0x2b0 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x2e1/0x1340 kernel/rcu/tree.c:2046
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2248
kthread+0x7b7/0x940 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.15.0-rc3-syzkaller-00001-g9d7a0577c9db #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:pv_native_safe_halt+0x13/0x20 arch/x86/kernel/paravirt.c:81
Code: cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 53 7e 18 00 f3 0f 1e fa fb f4 cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90000197dc0 EFLAGS: 000002c6
RAX: fa0f4092e99adf00 RBX: ffffffff8197272e RCX: ffffffff8c2fb89c
RDX: 0000000000000001 RSI: ffffffff8e6497f7 RDI: ffffffff8ca1b680
RBP: ffffc90000197f20 R08: ffff8880b8732b5b R09: 1ffff110170e656b
R10: dffffc0000000000 R11: ffffed10170e656c R12: 1ffff92000032fd2
R13: 1ffff11003addb40 R14: 0000000000000001 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff88812509a000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000002ed030 CR3: 0000000061086000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_safe_halt arch/x86/include/asm/paravirt.h:107 [inline]
default_idle+0x13/0x20 arch/x86/kernel/process.c:748
default_idle_call+0x74/0xb0 kernel/sched/idle.c:117
cpuidle_idle_call kernel/sched/idle.c:185 [inline]
do_idle+0x22e/0x5d0 kernel/sched/idle.c:325
cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:423
start_secondary+0xfe/0x100 arch/x86/kernel/smpboot.c:315
common_startup_64+0x13e/0x147
bridge0: received packet on veth0_to_bridge with own address as source address (addr:ae:a3:d5:48:6c:8d, 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:ae:a3:d5:48:6c:8d, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:ae:a3:d5:48:6c:8d, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:ae:a3:d5:48:6c:8d, 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: 9246 callbacks suppressed
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:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:ae:a3:d5:48:6c:8d, 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 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:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:ae:a3:d5:48:6c:8d, 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)