rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-....: (10407 ticks this GP) idle=f6f4/1/0x4000000000000000 softirq=27001/27001 fqs=4292
rcu: hardirqs softirqs csw/system
rcu: number: 1474089 0 0
rcu: cputime: 17066 35413 63 ==> 52480(ms)
rcu: (t=10500 jiffies g=32397 q=974 ncpus=2)
CPU: 1 PID: 9044 Comm: syz.2.1148 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:seqcount_lockdep_reader_access+0x148/0x190 include/linux/seqlock.h:105
Code: 00 00 00 00 9c 8f 44 24 20 f7 44 24 20 00 02 00 00 41 c6 04 07 f8 75 42 41 f7 c5 00 02 00 00 74 01 fb 48 c7 04 24 0e 36 e0 45 <4b> c7 04 27 00 00 00 00 43 c7 44 27 08 00 00 00 00 65 48 8b 04 25
RSP: 0018:ffffc900001f04c0 EFLAGS: 00000206
RAX: dffffc0000000004 RBX: ffff88813fffa7c8 RCX: e12ab6885ab17800
RDX: dffffc0000000000 RSI: ffffffff8acac9e0 RDI: ffffffff8b1c8fa0
RBP: ffffc900001f0580 R08: ffffffff911c65cf R09: 1ffffffff2238cb9
R10: dffffc0000000000 R11: fffffbfff2238cba R12: dffffc0000000000
R13: 0000000000000a02 R14: ffffffff81d3ff5f R15: 1ffff9200003e098
FS: 00007fc83e3736c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe23f54da08 CR3: 000000002ee1f000 CR4: 00000000003506e0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
read_seqbegin include/linux/seqlock.h:893 [inline]
zone_span_seqbegin include/linux/memory_hotplug.h:134 [inline]
page_outside_zone_boundaries mm/page_alloc.c:475 [inline]
bad_range+0x5f/0x280 mm/page_alloc.c:494
rmqueue mm/page_alloc.c:2847 [inline]
get_page_from_freelist+0x1930/0x19e0 mm/page_alloc.c:3217
__alloc_pages+0x1f0/0x460 mm/page_alloc.c:4500
alloc_slab_page+0x5d/0x160 mm/slub.c:1881
allocate_slab mm/slub.c:2028 [inline]
new_slab+0x87/0x2d0 mm/slub.c:2081
___slab_alloc+0xc5d/0x12f0 mm/slub.c:3253
__slab_alloc mm/slub.c:3339 [inline]
__slab_alloc_node mm/slub.c:3392 [inline]
slab_alloc_node mm/slub.c:3485 [inline]
kmem_cache_alloc_node+0x1e6/0x320 mm/slub.c:3540
kmalloc_reserve+0x95/0x240 net/core/skbuff.c:562
__alloc_skb+0x138/0x2c0 net/core/skbuff.c:653
alloc_skb include/linux/skbuff.h:1316 [inline]
new_skb drivers/block/aoe/aoecmd.c:66 [inline]
aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:430 [inline]
aoecmd_cfg+0x2c5/0xa50 drivers/block/aoe/aoecmd.c:1374
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:generic_exec_single+0x481/0x4f0 kernel/smp.c:418
Code: 75 11 e8 42 05 0b 00 48 85 db 75 16 e8 38 05 0b 00 eb 15 e8 31 05 0b 00 e8 bc 4c 0a 09 48 85 db 74 ea e8 22 05 0b 00 fb 31 c0 <48> c7 44 24 20 0e 36 e0 45 4b c7 04 2c 00 00 00 00 43 c7 44 2c 08
RSP: 0018:ffffc9000512fa00 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000200 RCX: 0000000000080000
RDX: ffffc9000cce9000 RSI: 0000000000002d9c RDI: 0000000000002d9d
RBP: ffffc9000512fad0 R08: ffffffff911c65ff R09: 1ffffffff2238cbf
R10: dffffc0000000000 R11: fffffbfff2238cc0 R12: 1ffff92000a25f44
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff92000a25f65
smp_call_function_single+0x36d/0x5a0 kernel/smp.c:647
task_function_call kernel/events/core.c:120 [inline]
perf_install_in_context+0x5be/0x920 kernel/events/core.c:2959
__do_sys_perf_event_open kernel/events/core.c:12957 [inline]
__se_sys_perf_event_open+0x1836/0x1c50 kernel/events/core.c:12609
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: 0033:0x7fc83d59ce59
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:00007fc83e373028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007fc83d815fa0 RCX: 00007fc83d59ce59
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000140
RBP: 00007fc83d632d6f R08: 0000000000000002 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc83d816038 R14: 00007fc83d815fa0 R15: 00007ffec3fbe7f8