bridge0: received packet on veth0_to_bridge with own address as source address (addr:66:2d:55:32:6f:20, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:66:2d:55:32:6f:20, vlan:0) rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: (detected by 1, t=10502 jiffies, g=9121, q=1328 ncpus=2) rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294964650-4294954147), jiffies_till_next_fqs=1, root ->qsmask 0x0 rcu: rcu_preempt kthread starved for 10504 jiffies! g9121 f0x2 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:25856 pid:17 tgid:17 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5328 [inline] __schedule+0x18af/0x4bd0 kernel/sched/core.c:6690 __schedule_loop kernel/sched/core.c:6767 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6782 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2615 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2045 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 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: 32 Comm: kworker/R-write Not tainted 6.12.0-rc5-syzkaller-00194-g249cfa318fb1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: writeback wb_workfn (flush-8:0) RIP: 0010:__in6_dev_get include/net/addrconf.h:330 [inline] RIP: 0010:ip6_ignore_linkdown include/net/addrconf.h:421 [inline] RIP: 0010:find_match+0xb2/0xc10 net/ipv6/route.c:744 Code: e8 43 ec 91 f7 4c 89 64 24 40 48 89 d8 bb c0 00 00 00 48 03 18 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 <74> 08 48 89 df e8 14 ec 91 f7 4c 8b 23 e8 ac 61 5a 01 89 c3 31 ff RSP: 0018:ffffc90000006f60 EFLAGS: 00000246 RAX: 1ffff1100b552418 RBX: ffff88805aa920c0 RCX: dffffc0000000000 RDX: ffff88801daa5a00 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff88804a71c4b8 R08: ffffffff8a6cac6f R09: ffffc90000007290 R10: ffffc90000007280 R11: fffff52000000e1e R12: ffffc90000007290 R13: ffff88804a71c4cf R14: 1ffff110094e3899 R15: 1ffff110094e3897 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f78728656c0 CR3: 0000000079888000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __find_rr_leaf+0x275/0x8e0 net/ipv6/route.c:832 find_rr_leaf net/ipv6/route.c:853 [inline] rt6_select net/ipv6/route.c:897 [inline] fib6_table_lookup+0x413/0xbb0 net/ipv6/route.c:2195 ip6_pol_route+0x273/0x15d0 net/ipv6/route.c:2231 pol_lookup_func include/net/ip6_fib.h:616 [inline] fib6_rule_lookup+0x58c/0x790 net/ipv6/fib6_rules.c:117 ip6_route_input_lookup net/ipv6/route.c:2300 [inline] ip6_route_input+0x859/0xd90 net/ipv6/route.c:2596 ip6_rcv_finish+0x144/0x180 net/ipv6/ip6_input.c:77 NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314 __netif_receive_skb_one_core net/core/dev.c:5670 [inline] __netif_receive_skb+0x1ea/0x650 net/core/dev.c:5783 process_backlog+0x662/0x15b0 net/core/dev.c:6115 __napi_poll+0xcb/0x490 net/core/dev.c:6779 napi_poll net/core/dev.c:6848 [inline] net_rx_action+0x89b/0x1240 net/core/dev.c:6970 handle_softirqs+0x2c5/0x980 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194 Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 9e d3 2d f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 33 6a 92 f5 65 8b 05 64 12 33 74 85 c0 74 43 48 c7 04 24 0e 36 RSP: 0018:ffffc90000a86200 EFLAGS: 00000206 RAX: ff1ef1e768a3c200 RBX: 1ffff92000150c44 RCX: ffffffff8170bfba RDX: dffffc0000000000 RSI: ffffffff8c0acac0 RDI: 0000000000000001 RBP: ffffc90000a86290 R08: ffffffff942cc807 R09: 1ffffffff2859900 R10: dffffc0000000000 R11: fffffbfff2859901 R12: dffffc0000000000 R13: 1ffff92000150c40 R14: ffffc90000a86220 R15: 0000000000000246 free_unref_page_commit+0x582/0x1140 mm/page_alloc.c:2613 free_unref_page+0x6a2/0xf20 mm/page_alloc.c:2661 discard_slab mm/slub.c:2677 [inline] __put_partials+0xeb/0x130 mm/slub.c:3145 put_cpu_partial+0x17c/0x250 mm/slub.c:3220 __slab_free+0x2ea/0x3d0 mm/slub.c:4449 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:257 [inline] __do_kmalloc_node mm/slub.c:4264 [inline] __kmalloc_noprof+0x1fc/0x400 mm/slub.c:4276 kmalloc_noprof include/linux/slab.h:882 [inline] kmalloc_array_noprof include/linux/slab.h:923 [inline] ext4_find_extent+0x22a/0xd50 fs/ext4/extents.c:916 ext4_ext_map_blocks+0x2f3/0x7e40 fs/ext4/extents.c:4205 ext4_map_create_blocks fs/ext4/inode.c:516 [inline] ext4_map_blocks+0x8c2/0x1960 fs/ext4/inode.c:702 mpage_map_one_extent fs/ext4/inode.c:2208 [inline] mpage_map_and_submit_extent fs/ext4/inode.c:2261 [inline] ext4_do_writepages+0x20f7/0x3d20 fs/ext4/inode.c:2724 ext4_writepages+0x213/0x3c0 fs/ext4/inode.c:2813 do_writepages+0x35d/0x870 mm/page-writeback.c:2683 __writeback_single_inode+0x14f/0x10d0 fs/fs-writeback.c:1658 writeback_sb_inodes+0x80c/0x1370 fs/fs-writeback.c:1954 __writeback_inodes_wb+0x11b/0x260 fs/fs-writeback.c:2025 writeback_inodes_wb+0x1d6/0x290 fs/fs-writeback.c:2055 wb_workfn+0x1054/0x1090 fs/fs-writeback.c:2330 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310 rescuer_thread+0x63f/0x10a0 kernel/workqueue.c:3487 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 net_ratelimit: 15915 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 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:66:2d:55:32:6f:20, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:66:2d:55:32:6f:20, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:66:2d:55:32:6f:20, 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:66:2d:55:32:6f:20, 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:0c, vlan:0) net_ratelimit: 20216 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:66:2d:55:32:6f:20, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:66:2d:55:32:6f:20, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:66:2d:55:32:6f:20, 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:66:2d:55:32:6f:20, 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: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:aa:aa:aa:aa:aa:0c, vlan:0)