rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-....: (10500 ticks this GP) idle=6504/1/0x4000000000000000 softirq=113793/113793 fqs=4305
rcu: hardirqs softirqs csw/system
rcu: number: 1261016 0 0
rcu: cputime: 17188 35301 66 ==> 52490(ms)
rcu: (t=10500 jiffies g=160793 q=4257 ncpus=2)
CPU: 0 PID: 25971 Comm: syz.2.6032 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:kasan_check_range+0x1c0/0x290 mm/kasan/generic.c:-1
Code: 49 8d 5c 24 07 4d 85 e4 49 0f 49 dc 48 83 e3 f8 49 29 dc 74 0e 41 80 3b 00 75 6b 49 ff c3 49 ff cc 75 f2 5b 41 5c 41 5d 41 5e <41> 5f 5d c3 45 84 ff 0f 85 91 00 00 00 41 f7 c7 00 ff 00 00 0f 85
RSP: 0018:ffffc90000007208 EFLAGS: 00000256
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff8168ad76
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8e8b19a8
RBP: ffffc90000007338 R08: ffffffff8e8b19af R09: 1ffffffff1d16335
R10: dffffc0000000000 R11: fffffbfff1d16336 R12: ffffffff819477b6
R13: dffffc0000000000 R14: 00007fc24b19cdd9 R15: 1ffffffff1d16335
FS: 00007fc24c05f6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000003780 CR3: 000000006b2dd000 CR4: 00000000003506f0
DR0: 0000000000000002 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
instrument_atomic_read include/linux/instrumented.h:68 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
cpumask_test_cpu include/linux/cpumask.h:504 [inline]
cpu_online include/linux/cpumask.h:1082 [inline]
trace_lock_release include/trace/events/lock.h:69 [inline]
lock_release+0xa6/0x8c0 kernel/locking/lockdep.c:5765
rcu_lock_release include/linux/rcupdate.h:344 [inline]
rcu_read_unlock include/linux/rcupdate.h:819 [inline]
is_bpf_text_address+0x28f/0x2a0 kernel/bpf/core.c:743
kernel_text_address+0xa0/0xd0 kernel/extable.c:125
__kernel_text_address+0xd/0x30 kernel/extable.c:79
unwind_get_return_address+0x5d/0xc0 arch/x86/kernel/unwind_orc.c:369
arch_stack_walk+0x11d/0x190 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0xaa/0x100 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x4e/0x70 mm/kasan/common.c:53
____kasan_kmalloc mm/kasan/common.c:375 [inline]
__kasan_kmalloc+0x8f/0xa0 mm/kasan/common.c:384
kmalloc include/linux/slab.h:600 [inline]
kzalloc include/linux/slab.h:721 [inline]
ref_tracker_alloc+0x162/0x4c0 lib/ref_tracker.c:203
__netdev_tracker_alloc include/linux/netdevice.h:4110 [inline]
netdev_hold include/linux/netdevice.h:4139 [inline]
switchdev_deferred_enqueue+0x111/0x240 net/switchdev/switchdev.c:123
br_switchdev_host_mdb_one net/bridge/br_switchdev.c:565 [inline]
br_switchdev_host_mdb net/bridge/br_switchdev.c:577 [inline]
br_switchdev_mdb_notify+0x40a/0x860 net/bridge/br_switchdev.c:652
br_mdb_notify+0x68/0x960 net/bridge/br_mdb.c:519
br_multicast_host_leave net/bridge/br_multicast.c:1497 [inline]
br_multicast_group_expired+0x300/0x5e0 net/bridge/br_multicast.c:655
call_timer_fn+0x189/0x540 kernel/time/timer.c:1701
expire_timers kernel/time/timer.c:1752 [inline]
__run_timers+0x542/0x800 kernel/time/timer.c:2023
run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2036
handle_softirqs+0x280/0x820 kernel/softirq.c:578
__do_softirq kernel/softirq.c:612 [inline]
invoke_softirq kernel/softirq.c:452 [inline]
__irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661
irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:___slab_alloc+0x111a/0x12f0 mm/slub.c:3318
Code: c7 44 24 68 00 00 00 00 9c 8f 44 24 68 f7 44 24 68 00 02 00 00 75 7a 41 f7 c6 00 02 00 00 74 01 fb 65 48 8b 04 25 28 00 00 00 <48> 3b 44 24 70 0f 85 ef 00 00 00 4c 89 e8 48 83 c4 78 5b 41 5c 41
RSP: 0018:ffffc90003607c28 EFLAGS: 00000206
RAX: c0ac9e66a7dc0700 RBX: ffff8880b8e42b70 RCX: c0ac9e66a7dc0700
RDX: dffffc0000000000 RSI: ffffffff8acac9e0 RDI: ffffffff8b1c8fa0
RBP: ffffffff81debf2f R08: ffffffff8e8b19af R09: 1ffffffff1d16335
R10: dffffc0000000000 R11: fffffbfff1d16336 R12: 0000000000000000
R13: ffff88805cecf318 R14: 0000000000000246 R15: 0000000000000000
__slab_alloc mm/slub.c:3339 [inline]
__slab_alloc_node mm/slub.c:3392 [inline]
slab_alloc_node mm/slub.c:3485 [inline]
slab_alloc mm/slub.c:3503 [inline]
__kmem_cache_alloc_lru mm/slub.c:3510 [inline]
kmem_cache_alloc_lru+0x1aa/0x2d0 mm/slub.c:3526
__d_alloc+0x31/0x730 fs/dcache.c:1773
d_alloc_pseudo+0x1d/0x70 fs/dcache.c:1905
alloc_file_pseudo+0xe4/0x210 fs/file_table.c:329
sock_alloc_file+0xb7/0x280 net/socket.c:469
sock_map_fd net/socket.c:494 [inline]
__sys_socket+0x13d/0x1a0 net/socket.c:1723
__do_sys_socket net/socket.c:1728 [inline]
__se_sys_socket net/socket.c:1726 [inline]
__x64_sys_socket+0x7a/0x90 net/socket.c:1726
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fc24b19cdd9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc24c05f028 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 00007fc24b415fa0 RCX: 00007fc24b19cdd9
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000011
RBP: 00007fc24b232d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc24b416038 R14: 00007fc24b415fa0 R15: 00007ffe1c0dfa38