bridge0: received packet on veth0_to_bridge with own address as source address (addr:82:29:bf:50:ba:f3, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P9617/1:b..l
rcu: (detected by 0, t=10503 jiffies, g=35197, q=597 ncpus=2)
task:syz.0.749 state:R running task stack:23448 pid:9617 tgid:9617 ppid:5841 task_flags:0x400640 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5396 [inline]
__schedule+0x116a/0x5de0 kernel/sched/core.c:6785
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7108
irqentry_exit+0x36/0x90 kernel/entry/common.c:307
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:unwind_next_frame+0x182/0x20a0 arch/x86/kernel/unwind_orc.c:494
Code: f2 83 e2 07 38 d0 7f 08 84 c0 0f 85 e4 09 00 00 48 89 e9 41 0f b6 45 35 48 ba 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 11 00 <0f> 85 26 17 00 00 4d 8b 7d 48 3c 01 49 83 df 00 4d 85 ff 0f 84 e6
RSP: 0018:ffffc90004626310 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 1ffff920008c4c79
RDX: dffffc0000000000 RSI: ffffffff8c156220 RDI: ffffffff8df1dda0
RBP: ffffc900046263c8 R08: b96fd049cee38f27 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffffc900046263d0
R13: ffffc90004626380 R14: ffffc900046263b5 R15: ffff88801db4bc00
arch_stack_walk+0x94/0x100 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
save_stack+0x160/0x1f0 mm/page_owner.c:156
__set_page_owner+0x91/0x550 mm/page_owner.c:329
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1c0/0x230 mm/page_alloc.c:1704
prep_new_page mm/page_alloc.c:1712 [inline]
get_page_from_freelist+0x1321/0x3890 mm/page_alloc.c:3669
__alloc_frozen_pages_noprof+0x261/0x23f0 mm/page_alloc.c:4959
alloc_pages_mpol+0x1fb/0x550 mm/mempolicy.c:2419
folio_alloc_mpol_noprof+0x36/0x2f0 mm/mempolicy.c:2438
shmem_alloc_folio+0x135/0x160 mm/shmem.c:1851
shmem_alloc_and_add_folio+0x499/0xc20 mm/shmem.c:1890
shmem_get_folio_gfp+0x67f/0x1600 mm/shmem.c:2532
shmem_fault+0x1fe/0xa30 mm/shmem.c:2733
__do_fault+0x10d/0x490 mm/memory.c:5189
do_read_fault mm/memory.c:5610 [inline]
do_fault mm/memory.c:5744 [inline]
do_pte_missing mm/memory.c:4251 [inline]
handle_pte_fault mm/memory.c:6089 [inline]
__handle_mm_fault+0x3c2a/0x5490 mm/memory.c:6232
handle_mm_fault+0x589/0xd10 mm/memory.c:6401
faultin_page mm/gup.c:1186 [inline]
__get_user_pages+0x589/0x3b80 mm/gup.c:1488
__get_user_pages_locked mm/gup.c:1754 [inline]
get_dump_page+0x257/0x3d0 mm/gup.c:2258
dump_user_range+0x195/0xb60 fs/coredump.c:1180
elf_core_dump+0x288a/0x3a90 fs/binfmt_elf.c:2075
do_coredump+0x399f/0x4f10 fs/coredump.c:950
get_signal+0x22e3/0x26d0 kernel/signal.c:3019
arch_do_signal_or_restart+0x8f/0x790 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:330 [inline]
irqentry_exit_to_user_mode+0x12a/0x270 kernel/entry/common.c:184
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x53908f
RSP: 002b:0000200000000178 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f5807db6160 RCX: 00007f5807b8e929
RDX: 00002000000001c0 RSI: 0000200000000170 RDI: 0000000000000080
RBP: 00007f5807c10b39 R08: 00002000000002c0 R09: 00002000000002c0
R10: 0000200000000280 R11: 0000000000000202 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f5807db6160 R15: 00007ffe79e7a1e8
rcu: rcu_preempt kthread starved for 228 jiffies! g35197 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:27672 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5396 [inline]
__schedule+0x116a/0x5de0 kernel/sched/core.c:6785
__schedule_loop kernel/sched/core.c:6863 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:6878
schedule_timeout+0x123/0x290 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x1ea/0xb00 kernel/rcu/tree.c:2054
rcu_gp_kthread+0x270/0x380 kernel/rcu/tree.c:2256
kthread+0x3c5/0x780 kernel/kthread.c:464
ret_from_fork+0x5d7/0x6f0 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 2 Comm: kthreadd Tainted: G U 6.16.0-rc2-syzkaller-00318-g739a6c93cc75 #0 PREEMPT(full)
Tainted: [U]=USER
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:__sanitizer_cov_trace_pc+0x41/0x70 kernel/kcov.c:217
Code: a9 00 01 ff 00 74 1d f6 c4 01 74 43 a9 00 00 0f 00 75 3c a9 00 00 f0 00 75 35 8b 82 3c 16 00 00 85 c0 74 2b 8b 82 18 16 00 00 <83> f8 02 75 20 48 8b 8a 20 16 00 00 8b 92 1c 16 00 00 48 8b 01 48
RSP: 0018:ffffc90000077988 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff8880fc5eae00 RCX: ffffffff816c5733
RDX: ffff88801e691e00 RSI: ffffffff816c573d RDI: 0000000000000006
RBP: 000000007c5eae00 R08: 0000000000000006 R09: ffff8880fc5eae00
R10: 000000007c5eae00 R11: 0000000000000001 R12: 0000000000000000
R13: ffff88801fac5c80 R14: ffffc90000077a18 R15: ffff88807c5eae00
FS: 0000000000000000(0000) GS:ffff888124761000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4dc6400218 CR3: 000000000e382000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
phys_addr_valid arch/x86/mm/physaddr.h:7 [inline]
__phys_addr+0x7d/0x180 arch/x86/mm/physaddr.c:28
virt_to_folio include/linux/mm.h:1178 [inline]
virt_to_slab mm/slab.h:211 [inline]
___cache_free+0x22/0xd0 mm/slub.c:4701
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x4d/0x120 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x195/0x1e0 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4148 [inline]
slab_alloc_node mm/slub.c:4197 [inline]
kmem_cache_alloc_node_noprof+0x1d5/0x3b0 mm/slub.c:4249
alloc_task_struct_node kernel/fork.c:183 [inline]
dup_task_struct kernel/fork.c:869 [inline]
copy_process+0x4b6/0x76a0 kernel/fork.c:1999
kernel_clone+0xfc/0x960 kernel/fork.c:2599
kernel_thread+0xd4/0x120 kernel/fork.c:2661
create_kthread kernel/kthread.c:487 [inline]
kthreadd+0x503/0x800 kernel/kthread.c:847
ret_from_fork+0x5d7/0x6f0 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
net_ratelimit: 12685 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:82:29:bf:50:ba:f3, 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:82:29:bf:50:ba:f3, 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:82:29:bf:50:ba:f3, vlan:0)