bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:ba:54:fc:56:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:ba:54:fc:56:3c, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5828/1:b..l P10635/1:b..l P10681/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=42737, q=1505 ncpus=2)
task:syz.2.1008 state:R running task stack:23840 pid:10681 tgid:10681 ppid:5828 task_flags:0x40064c flags:0x00080001
Call Trace:
context_switch kernel/sched/core.c:5298 [inline]
__schedule+0xfee/0x6120 kernel/sched/core.c:6911
preempt_schedule_common+0x42/0xc0 kernel/sched/core.c:7095
preempt_schedule_thunk+0x16/0x30 arch/x86/entry/thunk.S:12
__raw_spin_unlock include/linux/spinlock_api_smp.h:169 [inline]
_raw_spin_unlock+0x3e/0x50 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:389 [inline]
zap_pte_range mm/memory.c:1959 [inline]
zap_pmd_range mm/memory.c:2021 [inline]
zap_pud_range mm/memory.c:2049 [inline]
zap_p4d_range mm/memory.c:2070 [inline]
unmap_page_range+0x152f/0x4840 mm/memory.c:2091
unmap_single_vma+0x153/0x240 mm/memory.c:2133
unmap_vmas+0x295/0x590 mm/memory.c:2171
exit_mmap+0x1ef/0xa30 mm/mmap.c:1302
__mmput+0x12a/0x410 kernel/fork.c:1175
mmput+0x67/0x80 kernel/fork.c:1198
exit_mm kernel/exit.c:581 [inline]
do_exit+0x819/0x2b60 kernel/exit.c:964
do_group_exit+0xd5/0x2a0 kernel/exit.c:1118
get_signal+0x1ec7/0x21e0 kernel/signal.c:3034
arch_do_signal_or_restart+0x91/0x770 arch/x86/kernel/signal.c:337
__exit_to_user_mode_loop kernel/entry/common.c:64 [inline]
exit_to_user_mode_loop kernel/entry/common.c:98 [inline]
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
irqentry_exit_to_user_mode_prepare include/linux/irq-entry-common.h:270 [inline]
irqentry_exit_to_user_mode include/linux/irq-entry-common.h:339 [inline]
irqentry_exit+0x1f8/0x670 kernel/entry/common.c:219
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x7fb47e39c7a1
RSP: 002b:0000000000000008 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007fb47e615fa0 RCX: 00007fb47e39c799
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
RBP: 00007fb47e432c99 R08: 0000000000000009 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb47e616038 R14: 00007fb47e615fa0 R15: 00007ffdab8f6ed8
task:syz.1.996 state:R running task stack:23160 pid:10635 tgid:10635 ppid:5830 task_flags:0x40064c flags:0x00080001
Call Trace:
context_switch kernel/sched/core.c:5298 [inline]
__schedule+0xfee/0x6120 kernel/sched/core.c:6911
preempt_schedule_common+0x42/0xc0 kernel/sched/core.c:7095
preempt_schedule_thunk+0x16/0x30 arch/x86/entry/thunk.S:12
__raw_spin_unlock include/linux/spinlock_api_smp.h:169 [inline]
_raw_spin_unlock+0x3e/0x50 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:389 [inline]
zap_pte_range mm/memory.c:1959 [inline]
zap_pmd_range mm/memory.c:2021 [inline]
zap_pud_range mm/memory.c:2049 [inline]
zap_p4d_range mm/memory.c:2070 [inline]
unmap_page_range+0x152f/0x4840 mm/memory.c:2091
unmap_single_vma+0x153/0x240 mm/memory.c:2133
unmap_vmas+0x295/0x590 mm/memory.c:2171
exit_mmap+0x1ef/0xa30 mm/mmap.c:1302
__mmput+0x12a/0x410 kernel/fork.c:1175
mmput+0x67/0x80 kernel/fork.c:1198
exit_mm kernel/exit.c:581 [inline]
do_exit+0x819/0x2b60 kernel/exit.c:964
do_group_exit+0xd5/0x2a0 kernel/exit.c:1118
get_signal+0x1ec7/0x21e0 kernel/signal.c:3034
arch_do_signal_or_restart+0x91/0x770 arch/x86/kernel/signal.c:337
__exit_to_user_mode_loop kernel/entry/common.c:64 [inline]
exit_to_user_mode_loop kernel/entry/common.c:98 [inline]
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
irqentry_exit_to_user_mode_prepare include/linux/irq-entry-common.h:270 [inline]
irqentry_exit_to_user_mode include/linux/irq-entry-common.h:339 [inline]
irqentry_exit+0x1f8/0x670 kernel/entry/common.c:219
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x7fc5c299c7a1
RSP: 002b:0000000000000008 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007fc5c2c15fa0 RCX: 00007fc5c299c799
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
RBP: 00007fc5c2a32c99 R08: 0000000000000009 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc5c2c16038 R14: 00007fc5c2c15fa0 R15: 00007fff427df1c8
task:syz-executor state:R running task stack:22920 pid:5828 tgid:5828 ppid:5821 task_flags:0x400140 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5298 [inline]
__schedule+0xfee/0x6120 kernel/sched/core.c:6911
preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7238
irqentry_exit+0x17b/0x670 kernel/entry/common.c:239
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:lock_acquire+0x5e/0x380 kernel/locking/lockdep.c:5872
Code: 05 fb 2d 29 12 83 f8 07 0f 87 f0 00 00 00 48 0f a3 05 c6 69 f5 0e 0f 82 c2 02 00 00 8b 35 8e 9d f5 0e 85 f6 0f 85 dd 00 00 00 <48> 8b 44 24 30 65 48 2b 05 9d 2d 29 12 0f 85 02 03 00 00 48 83 c4
RSP: 0018:ffffc90003ff7480 EFLAGS: 00000206
RAX: 0000000000000046 RBX: 0000000000000000 RCX: 0000000000000002
RDX: 0000000000000000 RSI: ffffffff8de5b10c RDI: ffffffff8c1b1220
RBP: ffffffff8e7e77a0 R08: 0000000068a8edb7 R09: 0000000000000007
R10: 0000000000000200 R11: 0000000000000000 R12: 0000000000000002
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:312 [inline]
rcu_read_lock include/linux/rcupdate.h:850 [inline]
page_ext_get+0x36/0x1a0 mm/page_ext.c:531
__reset_page_owner+0x2b/0x190 mm/page_owner.c:306
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1433 [inline]
__free_frozen_pages+0x7e1/0x10d0 mm/page_alloc.c:2978
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x47/0xe0 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x1a0/0x1f0 mm/kasan/quarantine.c:286
__kasan_kmalloc+0x8a/0xb0 mm/kasan/common.c:406
kasan_kmalloc include/linux/kasan.h:263 [inline]
__do_kmalloc_node mm/slub.c:5260 [inline]
__kmalloc_noprof+0x301/0x850 mm/slub.c:5272
kmalloc_noprof include/linux/slab.h:954 [inline]
kzalloc_noprof include/linux/slab.h:1188 [inline]
tomoyo_encode2+0xfb/0x3c0 security/tomoyo/realpath.c:45
tomoyo_encode+0x29/0x50 security/tomoyo/realpath.c:80
tomoyo_realpath_from_path+0x18c/0x690 security/tomoyo/realpath.c:283
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_check_open_permission+0x2af/0x3c0 security/tomoyo/file.c:776
tomoyo_file_open+0x6b/0x90 security/tomoyo/tomoyo.c:334
security_file_open+0xb5/0x1e0 security/security.c:2637
do_dentry_open+0x5aa/0x1660 fs/open.c:926
vfs_open+0x82/0x3f0 fs/open.c:1081
do_open fs/namei.c:4671 [inline]
path_openat+0x208c/0x31a0 fs/namei.c:4830
do_file_open+0x20e/0x430 fs/namei.c:4859
do_sys_openat2+0x10d/0x1e0 fs/open.c:1366
do_sys_open fs/open.c:1372 [inline]
__do_sys_openat fs/open.c:1388 [inline]
__se_sys_openat fs/open.c:1383 [inline]
__x64_sys_openat+0x12d/0x210 fs/open.c:1383
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb47e39babc
RSP: 002b:00007ffdab8f71d0 EFLAGS: 00000206 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000407 RCX: 00007fb47e39babc
RDX: 0000000000090800 RSI: 00007fb47e4325db RDI: 00000000ffffff9c
RBP: 00007ffdab8f727c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000105
R13: 0000000000000000 R14: 0000000000059e71 R15: 00007ffdab8f72d0
rcu: rcu_preempt kthread starved for 9887 jiffies! g42737 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:26408 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5298 [inline]
__schedule+0xfee/0x6120 kernel/sched/core.c:6911
__schedule_loop kernel/sched/core.c:6993 [inline]
schedule+0xdd/0x390 kernel/sched/core.c:7008
schedule_timeout+0x127/0x280 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x1a9/0x900 kernel/rcu/tree.c:2095
rcu_gp_kthread+0x179/0x230 kernel/rcu/tree.c:2297
kthread+0x370/0x450 kernel/kthread.c:436
ret_from_fork+0x754/0xd80 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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:63
Code: 18 85 02 c3 cc cc cc cc 0f 1f 00 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 43 90 1d 00 fb f4 fc 35 03 00 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
RSP: 0018:ffffc90000197df0 EFLAGS: 00000246
RAX: 00000000001c0e05 RBX: ffff88801e690000 RCX: ffffffff8b8dfc75
RDX: 0000000000000000 RSI: ffffffff8de811d8 RDI: ffffffff8c1b1220
RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed10170a679d
R10: ffff8880b8533ceb R11: 0000000000000000 R12: 0000000000000001
R13: ffffed1003cd2000 R14: 0000000000000001 R15: ffffffff90d9dc10
FS: 0000000000000000(0000) GS:ffff888124446000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8afdff29b8 CR3: 0000000074a98000 CR4: 00000000003526f0
Call Trace:
arch_safe_halt arch/x86/include/asm/paravirt.h:73 [inline]
default_idle+0x9/0x10 arch/x86/kernel/process.c:767
default_idle_call+0x6c/0xb0 kernel/sched/idle.c:122
cpuidle_idle_call kernel/sched/idle.c:199 [inline]
do_idle+0x464/0x590 kernel/sched/idle.c:352
cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:451
start_secondary+0x21d/0x2d0 arch/x86/kernel/smpboot.c:312
common_startup_64+0x13e/0x148
net_ratelimit: 4121 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:ba:54:fc:56:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:ba:54:fc:56:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:ba:54:fc:56:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:ba:54:fc:56:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:ba:54:fc:56:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:ba:54:fc:56:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:ba:54:fc:56:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:ba:54:fc:56:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:ba:54:fc:56:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:ba:54:fc:56:3c, vlan:0)
net_ratelimit: 5553 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:ba:54:fc:56:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:ba:54:fc:56:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:ba:54:fc:56:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:ba:54:fc:56:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:ba:54:fc:56:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:ba:54:fc:56:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:ba:54:fc:56:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:ba:54:fc:56:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:ba:54:fc:56:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:ba:54:fc:56:3c, vlan:0)