INFO: rcu detected stall in fib_nl

Kernel	Title	Rank 🛈	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-5.15	INFO: rcu detected stall in fib_nl_delrule	1				1	98d	98d	0/3	upstream: reported on 2025/09/10 19:08
rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2661 jiffies s: 80181 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 13666 Comm: syz.4.2265 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:hlock_class kernel/locking/lockdep.c:228 [inline]
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4748 [inline]
RIP: 0010:__lock_acquire+0x933/0x7c50 kernel/locking/lockdep.c:4999
Code: 89 c6 41 81 e6 ff 1f 00 00 c1 e8 03 25 f8 03 00 00 48 8d b8 40 82 8c 90 be 08 00 00 00 e8 25 02 6e 00 4c 0f a3 35 ad 71 29 0f <73> 1a 4b 8d 04 76 c1 e0 06 4c 8d b0 00 01 25 90 49 b8 00 00 00 00
RSP: 0018:ffffc90000006f00 EFLAGS: 00000057
RAX: 0000000000000001 RBX: 0000000000000002 RCX: ffffffff8163108b
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff908c8240
RBP: ffffc90000007150 R08: dffffc0000000000 R09: fffffbfff2119049
R10: fffffbfff2119049 R11: 1ffffffff2119048 R12: ffff88801cbf46d0
R13: ffff88801cbf4602 R14: 000000000000002c R15: ffff88801cbf46d0
FS:  00007f81b21b76c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000033000 CR3: 0000000081b11000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 lock_acquire+0x1b4/0x490 kernel/locking/lockdep.c:5662
 rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
 rcu_read_lock_sched include/linux/rcupdate.h:883 [inline]
 pfn_valid include/linux/mmzone.h:1857 [inline]
 __virt_addr_valid+0x1a5/0x540 arch/x86/mm/physaddr.c:65
 kasan_addr_to_slab+0x9/0xc0 mm/kasan/common.c:35
 __kasan_record_aux_stack+0xf/0xc0 mm/kasan/generic.c:471
 irq_work_queue_on+0x10f/0x260 kernel/irq_work.c:140
 rcu_read_unlock_special+0x3c7/0x500 kernel/rcu/tree_plugin.h:678
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 __perf_event_output kernel/events/core.c:7741 [inline]
 perf_event_output_forward+0x237/0x2a0 kernel/events/core.c:7750
 __perf_event_overflow+0x448/0x610 kernel/events/core.c:9496
 perf_tp_event+0x335/0xb60 kernel/events/core.c:10029
 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10002
 perf_trace_preemptirq_template+0x287/0x330 include/trace/events/preemptirq.h:14
 trace_irq_enable_rcuidle+0xd3/0x140 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x24/0x40 kernel/trace/trace_preemptirq.c:44
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:728
RIP: 0010:rcu_read_unlock_special+0x84/0x500 kernel/rcu/tree_plugin.h:685
Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 fd 86 96 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0018:ffffc90000007aa0 EFLAGS: 00000206
RAX: 59b3440c8b9e3100 RBX: 1ffff92000000f5c RCX: 59b3440c8b9e3100
RDX: dffffc0000000000 RSI: ffffffff8a6c0600 RDI: ffffffff8abef920
RBP: ffffc90000007b90 R08: dffffc0000000000 R09: fffffbfff2119049
R10: fffffbfff2119049 R11: 1ffffffff2119048 R12: 0000000000000246
R13: dffffc0000000000 R14: ffff8880b8e3b900 R15: 0000000000000001
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 ieee80211_iterate_active_interfaces_atomic+0x156/0x170 net/mac80211/util.c:826
 mac80211_hwsim_beacon+0xb7/0x1b0 drivers/net/wireless/mac80211_hwsim.c:2147
 __run_hrtimer kernel/time/hrtimer.c:1747 [inline]
 __hrtimer_run_queues+0x554/0xd60 kernel/time/hrtimer.c:1811
 hrtimer_run_softirq+0x183/0x2a0 kernel/time/hrtimer.c:1828
 handle_softirqs+0x2a1/0x920 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:console_emit_next_record+0xab0/0xc90 kernel/printk/printk.c:2786
Code: 06 5e 1a 00 4d 85 ff 75 16 e8 fc 5d 1a 00 eb 15 e8 f5 5d 1a 00 e8 b0 ea a9 08 4d 85 ff 74 ea e8 e6 5d 1a 00 fb 48 8b 5c 24 48 <48> c7 84 24 80 00 00 00 0e 36 e0 45 4a c7 04 2b 00 00 00 00 4a c7
RSP: 0018:ffffc90012696b80 EFLAGS: 00000283
RAX: ffffffff816681ea RBX: 1ffff920024d2d80 RCX: 0000000000080000
RDX: ffffc90015464000 RSI: 000000000000d3a0 RDI: 000000000000d3a1
RBP: ffffc90012696dc0 R08: dffffc0000000000 R09: fffffbfff2119049
R10: fffffbfff2119049 R11: 1ffffffff2119048 R12: ffffffff81667f6d
R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000200
 console_flush_all kernel/printk/printk.c:-1 [inline]
 console_unlock+0x223/0x630 kernel/printk/printk.c:2906
 vprintk_emit+0x489/0x680 kernel/printk/printk.c:2303
 _printk+0xcc/0x110 kernel/printk/printk.c:2328
 validate_nla lib/nlattr.c:395 [inline]
 __nla_validate_parse+0xd8b/0x2990 lib/nlattr.c:607
 __nla_parse+0x3c/0x50 lib/nlattr.c:704
 __nlmsg_parse include/net/netlink.h:748 [inline]
 nlmsg_parse_deprecated include/net/netlink.h:789 [inline]
 fib_nl_delrule+0x2c7/0x1d10 net/core/fib_rules.c:905
 rtnetlink_rcv_msg+0x79b/0xed0 net/core/rtnetlink.c:6150
 netlink_rcv_skb+0x1de/0x420 net/netlink/af_netlink.c:2511
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x74d/0x8d0 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x89e/0xbc0 net/netlink/af_netlink.c:1872
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg net/socket.c:730 [inline]
 sock_write_iter+0x2b5/0x3a0 net/socket.c:1143
 call_write_iter include/linux/fs.h:2265 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x44c/0x960 fs/read_write.c:584
 ksys_write+0x143/0x240 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f81b138f749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f81b21b7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f81b15e5fa0 RCX: 00007f81b138f749
RDX: 0000000000033fe0 RSI: 0000200000000000 RDI: 000000000000000c
RBP: 00007f81b1413f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f81b15e6038 R14: 00007f81b15e5fa0 R15: 00007fffb2b64898
 </TASK>
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (1 ticks this GP) idle=4cc4/1/0x4000000000000002 softirq=65336/65336 fqs=2099
	(detected by 1, t=10504 jiffies, g=89433, q=2079 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 13666 Comm: syz.4.2265 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:rcu_read_unlock_special+0x3c/0x500 kernel/rcu/tree_plugin.h:630
Code: 81 ec c0 00 00 00 65 48 8b 04 25 28 00 00 00 48 89 84 24 a0 00 00 00 49 bd 00 00 00 00 00 fc ff df 48 c7 44 24 40 b3 8a b5 41 <48> c7 44 24 48 b2 d5 1e 8c 48 c7 44 24 50 d0 e7 6b 81 48 8d 5c 24
RSP: 0018:ffffc90000007340 EFLAGS: 00000082
RAX: 59b3440c8b9e3100 RBX: ffff88801cbf3fbc RCX: ffff88801cbf3b80
RDX: 0000000000000100 RSI: ffffffff8abef900 RDI: ffff88801cbf3b80
RBP: ffffc90000007440 R08: dffffc0000000000 R09: fffffbfff1bfe1c6
R10: fffffbfff1bfe1c6 R11: 1ffffffff1bfe1c5 R12: 1ffff1100397e7f7
R13: dffffc0000000000 R14: ffff88801cbf3fc0 R15: dffffc0000000000
FS:  00007f81b21b76c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000033000 CR3: 0000000081b11000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 __perf_event_output kernel/events/core.c:7741 [inline]
 perf_event_output_forward+0x237/0x2a0 kernel/events/core.c:7750
 __perf_event_overflow+0x448/0x610 kernel/events/core.c:9496
 perf_tp_event+0x335/0xb60 kernel/events/core.c:10029
 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10002
 perf_trace_preemptirq_template+0x287/0x330 include/trace/events/preemptirq.h:14
 trace_irq_enable_rcuidle+0xd3/0x140 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x24/0x40 kernel/trace/trace_preemptirq.c:44
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:728
RIP: 0010:rcu_read_unlock_special+0x84/0x500 kernel/rcu/tree_plugin.h:685
Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 fd 86 96 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0018:ffffc90000007aa0 EFLAGS: 00000206
RAX: 59b3440c8b9e3100 RBX: 1ffff92000000f5c RCX: 59b3440c8b9e3100
RDX: dffffc0000000000 RSI: ffffffff8a6c0600 RDI: ffffffff8abef920
RBP: ffffc90000007b90 R08: dffffc0000000000 R09: fffffbfff2119049
R10: fffffbfff2119049 R11: 1ffffffff2119048 R12: 0000000000000246
R13: dffffc0000000000 R14: ffff8880b8e3b900 R15: 0000000000000001
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 ieee80211_iterate_active_interfaces_atomic+0x156/0x170 net/mac80211/util.c:826
 mac80211_hwsim_beacon+0xb7/0x1b0 drivers/net/wireless/mac80211_hwsim.c:2147
 __run_hrtimer kernel/time/hrtimer.c:1747 [inline]
 __hrtimer_run_queues+0x554/0xd60 kernel/time/hrtimer.c:1811
 hrtimer_run_softirq+0x183/0x2a0 kernel/time/hrtimer.c:1828
 handle_softirqs+0x2a1/0x920 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:console_emit_next_record+0xab0/0xc90 kernel/printk/printk.c:2786
Code: 06 5e 1a 00 4d 85 ff 75 16 e8 fc 5d 1a 00 eb 15 e8 f5 5d 1a 00 e8 b0 ea a9 08 4d 85 ff 74 ea e8 e6 5d 1a 00 fb 48 8b 5c 24 48 <48> c7 84 24 80 00 00 00 0e 36 e0 45 4a c7 04 2b 00 00 00 00 4a c7
RSP: 0018:ffffc90012696b80 EFLAGS: 00000283
RAX: ffffffff816681ea RBX: 1ffff920024d2d80 RCX: 0000000000080000
RDX: ffffc90015464000 RSI: 000000000000d3a0 RDI: 000000000000d3a1
RBP: ffffc90012696dc0 R08: dffffc0000000000 R09: fffffbfff2119049
R10: fffffbfff2119049 R11: 1ffffffff2119048 R12: ffffffff81667f6d
R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000200
 console_flush_all kernel/printk/printk.c:-1 [inline]
 console_unlock+0x223/0x630 kernel/printk/printk.c:2906
 vprintk_emit+0x489/0x680 kernel/printk/printk.c:2303
 _printk+0xcc/0x110 kernel/printk/printk.c:2328
 validate_nla lib/nlattr.c:395 [inline]
 __nla_validate_parse+0xd8b/0x2990 lib/nlattr.c:607
 __nla_parse+0x3c/0x50 lib/nlattr.c:704
 __nlmsg_parse include/net/netlink.h:748 [inline]
 nlmsg_parse_deprecated include/net/netlink.h:789 [inline]
 fib_nl_delrule+0x2c7/0x1d10 net/core/fib_rules.c:905
 rtnetlink_rcv_msg+0x79b/0xed0 net/core/rtnetlink.c:6150
 netlink_rcv_skb+0x1de/0x420 net/netlink/af_netlink.c:2511
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x74d/0x8d0 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x89e/0xbc0 net/netlink/af_netlink.c:1872
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg net/socket.c:730 [inline]
 sock_write_iter+0x2b5/0x3a0 net/socket.c:1143
 call_write_iter include/linux/fs.h:2265 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x44c/0x960 fs/read_write.c:584
 ksys_write+0x143/0x240 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f81b138f749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f81b21b7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f81b15e5fa0 RCX: 00007f81b138f749
RDX: 0000000000033fe0 RSI: 0000200000000000 RDI: 000000000000000c
RBP: 00007f81b1413f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f81b15e6038 R14: 00007f81b15e5fa0 R15: 00007fffb2b64898
 </TASK>
rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 10916 jiffies s: 80181 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 13666 Comm: syz.4.2265 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:rcu_rdp_cpu_online kernel/rcu/tree.c:236 [inline]
RIP: 0010:rcu_lockdep_current_cpu_online+0x83/0x120 kernel/rcu/tree.c:776
Code: 3c 30 00 74 08 48 89 df e8 ea f0 65 00 48 8b 03 48 8d 98 80 b9 03 00 48 8d b8 a0 b9 03 00 48 89 f8 48 c1 e8 03 42 80 3c 30 00 <74> 05 e8 c6 f0 65 00 4c 8b 7b 20 48 83 c3 18 48 89 d8 48 c1 e8 03
RSP: 0018:ffffc90000007310 EFLAGS: 00000046
RAX: 1ffff110171c7734 RBX: ffff8880b8e3b980 RCX: 59b3440c8b9e3100
RDX: ffff88801cbf3b80 RSI: ffffffff8abef900 RDI: ffff8880b8e3b9a0
RBP: ffffc90000007470 R08: dffffc0000000000 R09: fffffbfff2119049
R10: fffffbfff2119049 R11: 1ffffffff2119048 R12: 1ffff92000000e78
R13: 0000000000000010 R14: dffffc0000000000 R15: ffffc90000007680
FS:  00007f81b21b76c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000033000 CR3: 0000000081b11000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 rcu_read_lock_held_common kernel/rcu/update.c:112 [inline]
 rcu_read_lock_held+0x1a/0x40 kernel/rcu/update.c:309
 __perf_output_begin kernel/events/ring_buffer.c:170 [inline]
 perf_output_begin_forward+0x1c8/0xa80 kernel/events/ring_buffer.c:272
 __perf_event_output kernel/events/core.c:7732 [inline]
 perf_event_output_forward+0x179/0x2a0 kernel/events/core.c:7750
 __perf_event_overflow+0x448/0x610 kernel/events/core.c:9496
 perf_tp_event+0x335/0xb60 kernel/events/core.c:10029
 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10002
 perf_trace_preemptirq_template+0x287/0x330 include/trace/events/preemptirq.h:14
 trace_irq_enable_rcuidle+0xd3/0x140 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x24/0x40 kernel/trace/trace_preemptirq.c:44
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:728
RIP: 0010:rcu_read_unlock_special+0x84/0x500 kernel/rcu/tree_plugin.h:685
Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 fd 86 96 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0018:ffffc90000007aa0 EFLAGS: 00000206
RAX: 59b3440c8b9e3100 RBX: 1ffff92000000f5c RCX: 59b3440c8b9e3100
RDX: dffffc0000000000 RSI: ffffffff8a6c0600 RDI: ffffffff8abef920
RBP: ffffc90000007b90 R08: dffffc0000000000 R09: fffffbfff2119049
R10: fffffbfff2119049 R11: 1ffffffff2119048 R12: 0000000000000246
R13: dffffc0000000000 R14: ffff8880b8e3b900 R15: 0000000000000001
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 ieee80211_iterate_active_interfaces_atomic+0x156/0x170 net/mac80211/util.c:826
 mac80211_hwsim_beacon+0xb7/0x1b0 drivers/net/wireless/mac80211_hwsim.c:2147
 __run_hrtimer kernel/time/hrtimer.c:1747 [inline]
 __hrtimer_run_queues+0x554/0xd60 kernel/time/hrtimer.c:1811
 hrtimer_run_softirq+0x183/0x2a0 kernel/time/hrtimer.c:1828
 handle_softirqs+0x2a1/0x920 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:console_emit_next_record+0xab0/0xc90 kernel/printk/printk.c:2786
Code: 06 5e 1a 00 4d 85 ff 75 16 e8 fc 5d 1a 00 eb 15 e8 f5 5d 1a 00 e8 b0 ea a9 08 4d 85 ff 74 ea e8 e6 5d 1a 00 fb 48 8b 5c 24 48 <48> c7 84 24 80 00 00 00 0e 36 e0 45 4a c7 04 2b 00 00 00 00 4a c7
RSP: 0018:ffffc90012696b80 EFLAGS: 00000283
RAX: ffffffff816681ea RBX: 1ffff920024d2d80 RCX: 0000000000080000
RDX: ffffc90015464000 RSI: 000000000000d3a0 RDI: 000000000000d3a1
RBP: ffffc90012696dc0 R08: dffffc0000000000 R09: fffffbfff2119049
R10: fffffbfff2119049 R11: 1ffffffff2119048 R12: ffffffff81667f6d
R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000200
 console_flush_all kernel/printk/printk.c:-1 [inline]
 console_unlock+0x223/0x630 kernel/printk/printk.c:2906
 vprintk_emit+0x489/0x680 kernel/printk/printk.c:2303
 _printk+0xcc/0x110 kernel/printk/printk.c:2328
 validate_nla lib/nlattr.c:395 [inline]
 __nla_validate_parse+0xd8b/0x2990 lib/nlattr.c:607
 __nla_parse+0x3c/0x50 lib/nlattr.c:704
 __nlmsg_parse include/net/netlink.h:748 [inline]
 nlmsg_parse_deprecated include/net/netlink.h:789 [inline]
 fib_nl_delrule+0x2c7/0x1d10 net/core/fib_rules.c:905
 rtnetlink_rcv_msg+0x79b/0xed0 net/core/rtnetlink.c:6150
 netlink_rcv_skb+0x1de/0x420 net/netlink/af_netlink.c:2511
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x74d/0x8d0 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x89e/0xbc0 net/netlink/af_netlink.c:1872
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg net/socket.c:730 [inline]
 sock_write_iter+0x2b5/0x3a0 net/socket.c:1143
 call_write_iter include/linux/fs.h:2265 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x44c/0x960 fs/read_write.c:584
 ksys_write+0x143/0x240 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f81b138f749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f81b21b7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f81b15e5fa0 RCX: 00007f81b138f749
RDX: 0000000000033fe0 RSI: 0000200000000000 RDI: 000000000000000c
RBP: 00007f81b1413f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f81b15e6038 R14: 00007f81b15e5fa0 R15: 00007fffb2b64898
 </TASK>
NMI backtrace for cpu 0
CPU: 0 PID: 13666 Comm: syz.4.2265 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:pvclock_clocksource_read+0x703/0x760 arch/x86/kernel/pvclock.c:111
Code: 48 39 dd 72 3a 48 c7 c7 60 e0 7d 8f be 08 00 00 00 e8 81 f3 98 00 48 89 d8 f0 48 0f b1 2d 15 c1 45 0e 48 89 c3 48 39 e8 75 d6 <48> 89 e8 48 81 c4 a0 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48
RSP: 0018:ffffc90000007800 EFLAGS: 00000002
RAX: 0000000000000001 RBX: 000000000000000a RCX: 0000000000000001
RDX: 1ffffffff1efba00 RSI: ffffffff8f7dd01c RDI: ffffffff8f7dd000
RBP: 000000bc426816b0 R08: ffffffff8f7dd008 R09: ffffffff8f7dd018
R10: ffffffff8f7dd010 R11: ffffffff8f7dd003 R12: dffffc0000000000
R13: 000000bc0ee67bff R14: 1ffffffff1efba00 R15: 0000000000000001
FS:  00007f81b21b76c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000033000 CR3: 0000000081b11000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 kvm_clock_read arch/x86/kernel/kvmclock.c:79 [inline]
 kvm_sched_clock_read+0x14/0x40 arch/x86/kernel/kvmclock.c:91
 sched_clock_cpu+0x6e/0x250 kernel/sched/clock.c:369
 irqtime_account_irq+0x6a/0x1b0 kernel/sched/cputime.c:60
 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline]
 sysvec_irq_work+0x45/0xc0 arch/x86/kernel/irq_work.c:17
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:728
RIP: 0010:rcu_read_unlock_special+0x84/0x500 kernel/rcu/tree_plugin.h:685
Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 fd 86 96 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0018:ffffc90000007aa0 EFLAGS: 00000206
RAX: 59b3440c8b9e3100 RBX: 1ffff92000000f5c RCX: 59b3440c8b9e3100
RDX: dffffc0000000000 RSI: ffffffff8a6c0600 RDI: ffffffff8abef920
RBP: ffffc90000007b90 R08: dffffc0000000000 R09: fffffbfff2119049
R10: fffffbfff2119049 R11: 1ffffffff2119048 R12: 0000000000000246
R13: dffffc0000000000 R14: ffff8880b8e3b900 R15: 0000000000000001
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 ieee80211_iterate_active_interfaces_atomic+0x156/0x170 net/mac80211/util.c:826
 mac80211_hwsim_beacon+0xb7/0x1b0 drivers/net/wireless/mac80211_hwsim.c:2147
 __run_hrtimer kernel/time/hrtimer.c:1747 [inline]
 __hrtimer_run_queues+0x554/0xd60 kernel/time/hrtimer.c:1811
 hrtimer_run_softirq+0x183/0x2a0 kernel/time/hrtimer.c:1828
 handle_softirqs+0x2a1/0x920 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:console_emit_next_record+0xab0/0xc90 kernel/printk/printk.c:2786
Code: 06 5e 1a 00 4d 85 ff 75 16 e8 fc 5d 1a 00 eb 15 e8 f5 5d 1a 00 e8 b0 ea a9 08 4d 85 ff 74 ea e8 e6 5d 1a 00 fb 48 8b 5c 24 48 <48> c7 84 24 80 00 00 00 0e 36 e0 45 4a c7 04 2b 00 00 00 00 4a c7
RSP: 0018:ffffc90012696b80 EFLAGS: 00000283
RAX: ffffffff816681ea RBX: 1ffff920024d2d80 RCX: 0000000000080000
RDX: ffffc90015464000 RSI: 000000000000d3a0 RDI: 000000000000d3a1
RBP: ffffc90012696dc0 R08: dffffc0000000000 R09: fffffbfff2119049
R10: fffffbfff2119049 R11: 1ffffffff2119048 R12: ffffffff81667f6d
R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000200
 console_flush_all kernel/printk/printk.c:-1 [inline]
 console_unlock+0x223/0x630 kernel/printk/printk.c:2906
 vprintk_emit+0x489/0x680 kernel/printk/printk.c:2303
 _printk+0xcc/0x110 kernel/printk/printk.c:2328
 validate_nla lib/nlattr.c:395 [inline]
 __nla_validate_parse+0xd8b/0x2990 lib/nlattr.c:607
 __nla_parse+0x3c/0x50 lib/nlattr.c:704
 __nlmsg_parse include/net/netlink.h:748 [inline]
 nlmsg_parse_deprecated include/net/netlink.h:789 [inline]
 fib_nl_delrule+0x2c7/0x1d10 net/core/fib_rules.c:905
 rtnetlink_rcv_msg+0x79b/0xed0 net/core/rtnetlink.c:6150
 netlink_rcv_skb+0x1de/0x420 net/netlink/af_netlink.c:2511
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x74d/0x8d0 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x89e/0xbc0 net/netlink/af_netlink.c:1872
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg net/socket.c:730 [inline]
 sock_write_iter+0x2b5/0x3a0 net/socket.c:1143
 call_write_iter include/linux/fs.h:2265 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x44c/0x960 fs/read_write.c:584
 ksys_write+0x143/0x240 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f81b138f749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f81b21b7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f81b15e5fa0 RCX: 00007f81b138f749
RDX: 0000000000033fe0 RSI: 0000200000000000 RDI: 000000000000000c
RBP: 00007f81b1413f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f81b15e6038 R14: 00007f81b15e5fa0 R15: 00007fffb2b64898
 </TASK>