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WARNING: CPU: 1 PID: 964 at kernel/rcu/tree_stall.h:990 rcu_check_gp_start_stall+0x2cf/0x460 kernel/rcu/tree_stall.h:990
Modules linked in:
CPU: 1 PID: 964 Comm: kworker/u8:5 Not tainted 6.8.0-syzkaller-05271-gf99c5f563c17 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:rcu_check_gp_start_stall+0x2cf/0x460 kernel/rcu/tree_stall.h:990
Code: c7 c0 14 50 94 be 04 00 00 00 e8 1c 32 7c 00 b8 01 00 00 00 87 05 c1 0d d4 12 85 c0 0f 85 1a ff ff ff 48 c7 c0 40 65 13 8e 90 <0f> 0b 90 49 39 c7 74 47 48 c7 c0 9c e1 86 8f 48 c1 e8 03 42 0f b6
RSP: 0018:ffffc90000a08bd8 EFLAGS: 00010046
RAX: ffffffff8e136540 RBX: 00000000ffffd40f RCX: ffffffff817c06f4
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff945014c0
RBP: ffffc90000a08e30 R08: 0000000000000003 R09: fffffbfff28a0298
R10: dffffc0000000000 R11: fffffbfff28a0298 R12: dffffc0000000000
R13: ffff8880b953f040 R14: 0000000000000246 R15: ffffffff8e136540
FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb3cfcc12d0 CR3: 000000000df32000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_core+0x694/0x1830 kernel/rcu/tree.c:2466
__do_softirq+0x2bc/0x943 kernel/softirq.c:554
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu+0xf2/0x1c0 kernel/softirq.c:633
irq_exit_rcu+0x9/0x30 kernel/softirq.c:645
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:csd_lock_wait kernel/smp.c:311 [inline]
RIP: 0010:smp_call_function_many_cond+0x1850/0x2960 kernel/smp.c:855
Code: 45 8b 65 00 44 89 e6 83 e6 01 31 ff e8 d9 d5 0b 00 41 83 e4 01 49 bc 00 00 00 00 00 fc ff df 75 07 e8 84 d1 0b 00 eb 38 f3 90 <42> 0f b6 04 23 84 c0 75 11 41 f7 45 00 01 00 00 00 74 1e e8 68 d1
RSP: 0018:ffffc90003a776e0 EFLAGS: 00000293
RAX: ffffffff81891f08 RBX: 1ffff11017288ba5 RCX: ffff8880204fda00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90003a778e0 R08: ffffffff81891ed7 R09: 1ffffffff2598ea0
R10: dffffc0000000000 R11: fffffbfff2598ea1 R12: dffffc0000000000
R13: ffff8880b9445d28 R14: ffff8880b953f280 R15: 0000000000000000
on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1023
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:2086 [inline]
text_poke_bp_batch+0x352/0xb30 arch/x86/kernel/alternative.c:2296
text_poke_flush arch/x86/kernel/alternative.c:2487 [inline]
text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2494
arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
static_key_enable_cpuslocked+0x136/0x260 kernel/jump_label.c:205
static_key_enable+0x1a/0x20 kernel/jump_label.c:218
toggle_allocation_gate+0xb5/0x250 mm/kfence/core.c:826
process_one_work kernel/workqueue.c:3254 [inline]
process_scheduled_works+0xa00/0x1770 kernel/workqueue.c:3335
worker_thread+0x86d/0xd70 kernel/workqueue.c:3416
kthread+0x2f0/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243
----------------
Code disassembly (best guess):
0: 45 8b 65 00 mov 0x0(%r13),%r12d
4: 44 89 e6 mov %r12d,%esi
7: 83 e6 01 and $0x1,%esi
a: 31 ff xor %edi,%edi
c: e8 d9 d5 0b 00 call 0xbd5ea
11: 41 83 e4 01 and $0x1,%r12d
15: 49 bc 00 00 00 00 00 movabs $0xdffffc0000000000,%r12
1c: fc ff df
1f: 75 07 jne 0x28
21: e8 84 d1 0b 00 call 0xbd1aa
26: eb 38 jmp 0x60
28: f3 90 pause
* 2a: 42 0f b6 04 23 movzbl (%rbx,%r12,1),%eax <-- trapping instruction
2f: 84 c0 test %al,%al
31: 75 11 jne 0x44
33: 41 f7 45 00 01 00 00 testl $0x1,0x0(%r13)
3a: 00
3b: 74 1e je 0x5b
3d: e8 .byte 0xe8
3e: 68 .byte 0x68
3f: d1 .byte 0xd1