rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P26688/2:b..l rcu: (detected by 1, t=10503 jiffies, g=182417, q=266 ncpus=2) task:syz-executor state:R running task stack:26976 pid:26688 tgid:26688 ppid:22774 task_flags:0x400040 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5378 [inline] __schedule+0x190e/0x4c90 kernel/sched/core.c:6765 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7087 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+0x264/0x550 kernel/locking/lockdep.c:5855 Code: 2b 00 74 08 4c 89 f7 e8 5a 48 8c 00 f6 44 24 61 02 0f 85 85 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25 RSP: 0018:ffffc9000c9cf400 EFLAGS: 00000206 RAX: 0000000000000001 RBX: 1ffff92001939e8c RCX: ffff8880316964e8 RDX: dffffc0000000000 RSI: ffffffff8c2ab6a0 RDI: ffffffff8c80ed80 RBP: ffffc9000c9cf550 R08: ffffffff94546847 R09: 1ffffffff28a8d08 R10: dffffc0000000000 R11: fffffbfff28a8d09 R12: 1ffff92001939e88 R13: dffffc0000000000 R14: ffffc9000c9cf460 R15: 0000000000000246 rcu_lock_acquire include/linux/rcupdate.h:337 [inline] rcu_read_lock include/linux/rcupdate.h:849 [inline] is_bpf_text_address+0x46/0x2a0 kernel/bpf/core.c:772 kernel_text_address+0xa7/0xe0 kernel/extable.c:125 __kernel_text_address+0xd/0x40 kernel/extable.c:79 unwind_get_return_address+0x4d/0x90 arch/x86/kernel/unwind_orc.c:369 arch_stack_walk+0xfd/0x150 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122 save_stack+0xfb/0x1f0 mm/page_owner.c:156 __reset_page_owner+0x76/0x430 mm/page_owner.c:297 reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1127 [inline] free_frozen_pages+0xe0d/0x10e0 mm/page_alloc.c:2660 discard_slab mm/slub.c:2684 [inline] __put_partials+0x160/0x1c0 mm/slub.c:3153 put_cpu_partial+0x17c/0x250 mm/slub.c:3228 __slab_free+0x290/0x380 mm/slub.c:4479 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:4115 [inline] slab_alloc_node mm/slub.c:4164 [inline] __do_kmalloc_node mm/slub.c:4293 [inline] __kmalloc_noprof+0x236/0x4c0 mm/slub.c:4306 kmalloc_noprof include/linux/slab.h:905 [inline] kmalloc_array_noprof include/linux/slab.h:946 [inline] security_inode_init_security+0x126/0x480 security/security.c:1829 shmem_symlink+0x167/0x610 mm/shmem.c:4089 vfs_symlink+0x137/0x2e0 fs/namei.c:4671 do_symlinkat+0x222/0x3a0 fs/namei.c:4697 __do_sys_symlinkat fs/namei.c:4713 [inline] __se_sys_symlinkat fs/namei.c:4710 [inline] __x64_sys_symlinkat+0x95/0xb0 fs/namei.c:4710 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe23d18c367 RSP: 002b:00007fe23d4cfda8 EFLAGS: 00000202 ORIG_RAX: 000000000000010a RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe23d18c367 RDX: 00007fe23d20fb00 RSI: 00000000ffffff9c RDI: 00007fe23d4cfe40 RBP: 00007fe23d4cfdec R08: 0000000000000017 R09: 00007fe23d4cfaf7 R10: 0000000000000000 R11: 0000000000000202 R12: 00000000000000a7 R13: 0000555562452590 R14: 000000000010d86d R15: 00007fe23d4cfe40 bridge0: received packet on veth0_to_bridge with own address as source address (addr:8a:5c:0d:3a:cc:71, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:8a:5c:0d:3a:cc:71, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:8a:5c:0d:3a:cc:71, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:8a:5c:0d:3a:cc:71, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:8a:5c:0d:3a:cc:71, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:8a:5c:0d:3a:cc:71, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:8a:5c:0d:3a:cc:71, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:8a:5c:0d:3a:cc:71, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:8a:5c:0d:3a:cc:71, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:8a:5c:0d:3a:cc:71, vlan:0)