bridge0: received packet on veth0_to_bridge with own address as source address (addr:fe:8b:54:9c:c2:b9, vlan:0) rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5994/1:b..l rcu: (detected by 1, t=10503 jiffies, g=9701, q=2729 ncpus=2) task:syz.0.11 state:R running task stack:26856 pid:5994 tgid:5985 ppid:5834 task_flags:0x400140 flags:0x00024002 Call Trace: context_switch kernel/sched/core.c:5397 [inline] __schedule+0x16a2/0x4cb0 kernel/sched/core.c:6786 preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7109 irqentry_exit+0x6f/0x90 kernel/entry/common.c:307 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:on_stack arch/x86/include/asm/stacktrace.h:58 [inline] RIP: 0010:stack_access_ok arch/x86/kernel/unwind_orc.c:393 [inline] RIP: 0010:deref_stack_reg arch/x86/kernel/unwind_orc.c:403 [inline] RIP: 0010:unwind_next_frame+0xb54/0x2390 arch/x86/kernel/unwind_orc.c:585 Code: 00 fc ff df 48 8b 4c 24 20 0f b6 04 01 84 c0 0f 85 85 13 00 00 41 83 3e 00 0f 95 c0 49 39 df 0f 96 c1 20 c1 49 39 dc 0f 97 c0 <20> c8 3c 01 75 18 48 8d 43 08 4c 39 f8 0f 97 c1 4c 39 e0 0f 96 c0 RSP: 0018:ffffc900054173b8 EFLAGS: 00000206 RAX: 0000000000000001 RBX: ffffc90005417870 RCX: 1ffff92000a82e01 RDX: ffffffff903c1f54 RSI: 0000000000000002 RDI: ffffffff8be1b860 RBP: 1ffff92000a82e92 R08: 0000000000000009 R09: ffffffff8172aae5 R10: ffffc900054174d8 R11: ffffffff81acff90 R12: ffffc90005418000 R13: 1ffff92000a82e93 R14: ffffc90005417488 R15: ffffc90005410000 arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:377 [inline] __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:394 kasan_kmalloc include/linux/kasan.h:260 [inline] __do_kmalloc_node mm/slub.c:4328 [inline] __kmalloc_noprof+0x27a/0x4f0 mm/slub.c:4340 kmalloc_noprof include/linux/slab.h:909 [inline] io_cache_alloc_new+0x40/0x100 io_uring/alloc_cache.c:40 io_cache_alloc io_uring/alloc_cache.h:59 [inline] io_uring_alloc_async_data io_uring/io_uring.h:245 [inline] io_rw_alloc_async io_uring/rw.c:202 [inline] __io_prep_rw+0x23f/0xd80 io_uring/rw.c:261 io_prep_rw io_uring/rw.c:320 [inline] io_prep_rwv+0x8c/0x3d0 io_uring/rw.c:342 io_init_req io_uring/io_uring.c:2139 [inline] io_submit_sqe io_uring/io_uring.c:2186 [inline] io_submit_sqes+0x90c/0x1c50 io_uring/io_uring.c:2337 __do_sys_io_uring_enter io_uring/io_uring.c:3404 [inline] __se_sys_io_uring_enter+0x2df/0x2b20 io_uring/io_uring.c:3338 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8892d8e929 RSP: 002b:00007f8893c97038 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa RAX: ffffffffffffffda RBX: 00007f8892fb6080 RCX: 00007f8892d8e929 RDX: 0000000000000000 RSI: 0000000000003516 RDI: 0000000000000004 RBP: 00007f8892e10ca1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f8892fb6080 R15: 00007ffc0e66c4b8 bridge0: received packet on veth0_to_bridge with own address as source address (addr:fe:8b:54:9c:c2:b9, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:fe:8b:54:9c:c2:b9, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:fe:8b:54:9c:c2:b9, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:fe:8b:54:9c:c2:b9, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:fe:8b:54:9c:c2:b9, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:fe:8b:54:9c:c2:b9, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:fe:8b:54:9c:c2:b9, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:fe:8b:54:9c:c2:b9, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:fe:8b:54:9c:c2:b9, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:fe:8b:54:9c:c2:b9, vlan:0)