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timer: addrconf_rs_timer+0x0/0x610 net/ipv6/addrconf.c:6568 preempt leak: 00000103 -> 00000102
WARNING: CPU: 1 PID: 3549 at kernel/time/timer.c:1481 call_timer_fn+0x2f0/0x6b0 kernel/time/timer.c:1480
Modules linked in:
CPU: 1 PID: 3549 Comm: syz-executor369 Not tainted 6.1.76-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
RIP: 0010:call_timer_fn+0x2f0/0x6b0 kernel/time/timer.c:1480
Code: 11 00 c6 05 b8 f0 e5 0c 01 65 8b 0d c2 21 89 7e 81 e1 ff ff ff 7f 48 c7 c7 a0 d4 ed 8a 48 8b 74 24 10 44 89 fa e8 20 1b d9 ff <0f> 0b eb 05 e8 c7 1a 11 00 65 8b 0d 98 21 89 7e 89 ca 81 e2 00 00
RSP: 0018:ffffc900001e0b80 EFLAGS: 00010246
RAX: db9b514e7a87fc00 RBX: 0000000000000102 RCX: ffff88802890bb80
RDX: 0000000000000102 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900001e0c70 R08: ffffffff81526b4e R09: fffff5200003c0d1
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff9200003c174 R14: 0000000000000001 R15: 0000000000000103
FS: 0000555555645480(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555555645788 CR3: 0000000075f9b000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
expire_timers kernel/time/timer.c:1519 [inline]
__run_timers+0x67c/0x890 kernel/time/timer.c:1790
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1803
__do_softirq+0x2e9/0xa4c kernel/softirq.c:571
invoke_softirq kernel/softirq.c:445 [inline]
__irq_exit_rcu+0x155/0x240 kernel/softirq.c:650
irq_exit_rcu+0x5/0x20 kernel/softirq.c:662
sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xd4/0x130 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 b2 54 4d f7 f6 44 24 21 02 75 4e 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 67 b0 c9 f6 65 8b 05 e8 f3 6d 75 85 c0 74 3f 48 c7 04 24 0e 36
RSP: 0018:ffffc90003b3fc40 EFLAGS: 00000206
RAX: db9b514e7a87fc00 RBX: 1ffff92000767f8c RCX: ffffffff91c88103
RDX: dffffc0000000000 RSI: ffffffff8aebebc0 RDI: 0000000000000001
RBP: ffffc90003b3fcd0 R08: dffffc0000000000 R09: fffffbfff1a310bd
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff92000767f88 R14: ffffc90003b3fc60 R15: 0000000000000246
____bpf_trace_printk kernel/trace/bpf_trace.c:394 [inline]
bpf_trace_printk+0x1a3/0x200 kernel/trace/bpf_trace.c:376
</TASK>
----------------
Code disassembly (best guess):
0: 9c pushf
1: 8f 44 24 20 pop 0x20(%rsp)
5: 42 80 3c 23 00 cmpb $0x0,(%rbx,%r12,1)
a: 74 08 je 0x14
c: 4c 89 f7 mov %r14,%rdi
f: e8 b2 54 4d f7 call 0xf74d54c6
14: f6 44 24 21 02 testb $0x2,0x21(%rsp)
19: 75 4e jne 0x69
1b: 41 f7 c7 00 02 00 00 test $0x200,%r15d
22: 74 01 je 0x25
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 67 b0 c9 f6 call 0xf6c9b096 <-- trapping instruction
2f: 65 8b 05 e8 f3 6d 75 mov %gs:0x756df3e8(%rip),%eax # 0x756df41e
36: 85 c0 test %eax,%eax
38: 74 3f je 0x79
3a: 48 rex.W
3b: c7 .byte 0xc7
3c: 04 24 add $0x24,%al
3e: 0e (bad)
3f: 36 ss