bridge0: received packet on veth0_to_bridge with own address as source address (addr:22:34:34:9f:4b:cf, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P6768/1:b..l P6763/1:b..l P5193/1:b..l
rcu: 	(detected by 1, t=10503 jiffies, g=19229, q=989 ncpus=2)
task:syslogd         state:R  running task     stack:23624 pid:5193  tgid:5193  ppid:1      task_flags:0x400000 flags:0x00000002
Call Trace:
 <TASK>
 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: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_acquire+0xc5/0x2f0 kernel/locking/lockdep.c:5862
Code: ca 11 85 c0 0f 85 e0 00 00 00 65 48 8b 04 25 08 60 68 93 83 b8 ec 0a 00 00 00 0f 85 ca 00 00 00 48 c7 44 24 10 00 00 00 00 9c <8f> 44 24 10 4c 8b 74 24 10 fa 48 c7 c7 2d 56 50 8e e8 05 48 91 0a
RSP: 0018:ffffc9000304f300 EFLAGS: 00000246
RAX: ffff88807e589e00 RBX: ffffffff8ed3df20 RCX: 0000000000000002
RDX: 0000000000000000 RSI: ffffffff816d9be5 RDI: 1ffffffff1da7be4
RBP: ffffffff93686020 R08: 0000000000000000 R09: 0000000000000000
R10: ffffc9000304f4b0 R11: ffffffff81ae6230 R12: 0000000000000000
R13: 0000000000000002 R14: ffffffff82220b1e 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+0xd5/0x23b0 arch/x86/kernel/unwind_orc.c:479
 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
 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]
 __do_kmalloc_node mm/slub.c:4340 [inline]
 __kmalloc_noprof+0x238/0x4d0 mm/slub.c:4353
 kmalloc_noprof include/linux/slab.h:909 [inline]
 tomoyo_realpath_from_path+0xcf/0x5e0 security/tomoyo/realpath.c:251
 tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
 tomoyo_path_perm+0x2be/0x640 security/tomoyo/file.c:822
 security_inode_getattr+0x130/0x330 security/security.c:2377
 vfs_getattr fs/stat.c:243 [inline]
 vfs_fstat fs/stat.c:265 [inline]
 vfs_fstatat+0xa5/0x150 fs/stat.c:366
 __do_sys_newfstatat fs/stat.c:532 [inline]
 __se_sys_newfstatat fs/stat.c:526 [inline]
 __x64_sys_newfstatat+0x11f/0x1a0 fs/stat.c:526
 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: 0033:0x7f601335c5f4
RSP: 002b:00007ffe420d3c08 EFLAGS: 00000206 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00005562d19cf910 RCX: 00007f601335c5f4
RDX: 00007ffe420d3c30 RSI: 00007f60133f9130 RDI: 0000000000000003
RBP: 00007ffe420d3d10 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000001000 R11: 0000000000000206 R12: 00005562d19cfc50
R13: 0000000068038794 R14: 0000000000000004 R15: 00005562d19cfa60
 </TASK>
task:syz.0.238       state:R  running task     stack:24616 pid:6763  tgid:6763  ppid:5857   task_flags:0x40044c flags:0x00004006
Call Trace:
 <TASK>
 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:lock_acquire+0x167/0x2f0 arch/x86/include/asm/irqflags.h:-1
Code: c7 44 24 10 00 00 00 00 9c 8f 44 24 10 f7 44 24 10 00 02 00 00 0f 85 fd 00 00 00 41 f7 c6 00 02 00 00 74 01 fb 65 48 8b 45 00 <48> 3b 44 24 38 0f 85 72 01 00 00 48 83 c4 40 5b 41 5c 41 5d 41 5e
RSP: 0018:ffffc9001da87398 EFLAGS: 00000206
RAX: 3c3ca1908e85dd00 RBX: ffffffff8ed3df20 RCX: 3c3ca1908e85dd00
RDX: 0000000000000000 RSI: ffffffff8e4db3f9 RDI: ffffffff8ca1b5c0
RBP: ffffffff93686020 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000002 R14: 0000000000000246 R15: 0000000000000000
 rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 rcu_read_lock include/linux/rcupdate.h:841 [inline]
 __update_page_owner_free_handle+0x4b/0x460 mm/page_owner.c:271
 __reset_page_owner+0x89/0x1e0 mm/page_owner.c:309
 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
 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_kmalloc+0x23/0xb0 mm/kasan/common.c:385
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __kmalloc_cache_noprof+0x236/0x370 mm/slub.c:4372
 kmalloc_noprof include/linux/slab.h:905 [inline]
 kzalloc_noprof include/linux/slab.h:1039 [inline]
 kobject_uevent_env+0x28b/0x8e0 lib/kobject_uevent.c:540
 device_remove drivers/base/dd.c:567 [inline]
 __device_release_driver drivers/base/dd.c:1273 [inline]
 device_release_driver_internal+0x4a9/0x7c0 drivers/base/dd.c:1296
 driver_detach+0x1fb/0x2d0 drivers/base/dd.c:1359
 bus_remove_driver+0x1f3/0x320 drivers/base/bus.c:747
 usb_gadget_unregister_driver+0x4e/0x70 drivers/usb/gadget/udc/core.c:1732
 raw_release+0xf6/0x1e0 drivers/usb/gadget/legacy/raw_gadget.c:462
 __fput+0x3e9/0x9f0 fs/file_table.c:465
 task_work_run+0x251/0x310 kernel/task_work.c:227
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0xa11/0x27f0 kernel/exit.c:953
 do_group_exit+0x207/0x2c0 kernel/exit.c:1102
 get_signal+0x1696/0x1730 kernel/signal.c:3034
 arch_do_signal_or_restart+0x98/0x810 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0xce/0x340 kernel/entry/common.c:218
 do_syscall_64+0x100/0x210 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fec68b8e169
RSP: 002b:00007fec68edfb88 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffff92 RBX: 00000000000289af RCX: 00007fec68b8e169
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fec68db5fac
RBP: 0000000000000bea R08: 7fffffffffffffff R09: 0000000468edfe7f
R10: 00007fec68edfc80 R11: 0000000000000246 R12: 00007fec68db5fac
R13: 00007fec68edfc80 R14: 0000000000029599 R15: 00007fec68edfca0
 </TASK>
task:syz.3.237       state:R  running task     stack:25512 pid:6768  tgid:6764  ppid:5861   task_flags:0x400040 flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x1b88/0x5240 kernel/sched/core.c:6767
 preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6947
 preempt_schedule+0xe4/0xf0 kernel/sched/core.c:6971
 preempt_schedule_thunk+0x16/0x30 arch/x86/entry/thunk.S:12
 __raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
 _raw_spin_unlock+0x3e/0x50 kernel/locking/spinlock.c:186
 spin_unlock include/linux/spinlock.h:391 [inline]
 wp_page_copy mm/memory.c:3579 [inline]
 do_wp_page+0x20ee/0x5e00 mm/memory.c:3939
 handle_pte_fault+0xfaf/0x61c0 mm/memory.c:6013
 __handle_mm_fault mm/memory.c:6140 [inline]
 handle_mm_fault+0x1129/0x1bf0 mm/memory.c:6309
 do_user_addr_fault arch/x86/mm/fault.c:1388 [inline]
 handle_page_fault arch/x86/mm/fault.c:1480 [inline]
 exc_page_fault+0x2bb/0x920 arch/x86/mm/fault.c:1538
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0010:__put_user_nocheck_4+0x3/0x10 arch/x86/lib/putuser.S:104
Code: d9 0f 01 cb 89 01 31 c9 0f 01 ca c3 cc cc cc cc 0f 1f 80 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 01 cb <89> 01 31 c9 0f 01 ca c3 cc cc cc cc 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000b4cf8f8 EFLAGS: 00050202
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000200000112030
RDX: ffff88803154bc00 RSI: 0000000000000002 RDI: 00000000ffffffff
RBP: ffffc9000b4cfa70 R08: ffffffff89dfc3b4 R09: 1ffff92001699ed4
R10: dffffc0000000000 R11: fffff52001699ed5 R12: 0000200000112000
R13: 0000000000000002 R14: 0000000000000000 R15: ffffc9000b4cfd00
 ____sys_recvmsg+0x2ac/0x480 net/socket.c:2799
 ___sys_recvmsg net/socket.c:2828 [inline]
 do_recvmmsg+0x428/0xab0 net/socket.c:2923
 __sys_recvmmsg net/socket.c:2997 [inline]
 __do_sys_recvmmsg net/socket.c:3020 [inline]
 __se_sys_recvmmsg net/socket.c:3013 [inline]
 __x64_sys_recvmmsg+0x1ab/0x260 net/socket.c:3013
 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: 0033:0x7f0c1d78e169
RSP: 002b:00007f0c1e6ac038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f0c1d9b6080 RCX: 00007f0c1d78e169
RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000005
RBP: 00007f0c1d810a68 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f0c1d9b6080 R15: 00007f0c1dadfa28
 </TASK>
rcu: rcu_preempt kthread starved for 1934 jiffies! g19229 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:26376 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 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
 </TASK>
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: 0 Comm: swapper/0 Not tainted 6.15.0-rc2-syzkaller-00400-g3088d26962e8 #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 8e 18 00 f3 0f 1e fa fb f4 <c3> cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffffff8ea07d60 EFLAGS: 000002c6
RAX: 5d9debc87b7bc100 RBX: ffffffff8197272e RCX: ffffffff8c2fa89c
RDX: 0000000000000001 RSI: ffffffff8e64973a RDI: ffffffff8ca1b5c0
RBP: ffffffff8ea07eb8 R08: ffff8880b8632b5b R09: 1ffff110170c656b
R10: dffffc0000000000 R11: ffffed10170c656c R12: 1ffffffff1d40fc6
R13: 1ffffffff1d52cb0 R14: 0000000000000000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888124f9a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000075030 CR3: 000000002fee6000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 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
 rest_init+0x2dc/0x300 init/main.c:743
 start_kernel+0x484/0x510 init/main.c:1099
 x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:513
 x86_64_start_kernel+0x66/0x70 arch/x86/kernel/head64.c:494
 common_startup_64+0x13e/0x147
 </TASK>
net_ratelimit: 19480 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:22:34:34:9f:4b:cf, 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:22:34:34:9f:4b:cf, 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:22:34:34:9f:4b:cf, 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:22:34:34:9f:4b:cf, 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:22:34:34:9f:4b:cf, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)