[v5.15] INFO: rcu detected stall in rtnl_dump_ifinfo
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syzbot
Mar 24, 2026, 9:05:31 PM (2 days ago) Mar 24
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 91d48252ad4b Linux 5.15.202
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=1502d6da580000
kernel config: https://syzkaller.appspot.com/x/.config?x=353ae28c40b35af5
dashboard link: https://syzkaller.appspot.com/bug?extid=4ad5319111bc1c4f0ac2
compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/1f63ca11335d/disk-91d48252.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/85d7c8824423/vmlinux-91d48252.xz
kernel image: https://storage.googleapis.com/syzbot-assets/11897ccd5b62/bzImage-91d48252.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+4ad531...@syzkaller.appspotmail.com
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-....: (1 GPs behind) idle=343/1/0x4000000000000002 softirq=51458/51459 fqs=5093
(detected by 1, t=10502 jiffies, g=72241, q=1070)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 18209 Comm: syz.1.3993 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:irq_work_run_list+0x0/0x340 kernel/irq_work.c:166
Code: c7 c7 60 10 38 8c 48 89 de e8 2c e7 7e 02 e9 63 ff ff ff e8 22 15 f4 ff 48 c7 c7 80 10 38 8c 48 89 de e8 13 e7 7e 02 eb a3 90 <55> 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec 80 00
RSP: 0018:ffffc90000007840 EFLAGS: 00000082
RAX: 1ffffffff17c6304 RBX: ffffffff8be31820 RCX: ffff88802c0d9dc0
RDX: 0000000000010100 RSI: 0000000000000000 RDI: ffff8880b9033d70
RBP: 0000000000000000 R08: ffffffff8d89e36f R09: 1ffffffff1b13c6d
R10: dffffc0000000000 R11: fffffbfff1b13c6e R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
FS: 00007f682c2326c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffa2b7d26b8 CR3: 000000005a21b000 CR4: 00000000003506f0
DR0: 0000000000000004 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
<IRQ>
irq_work_run+0x63/0xe0 kernel/irq_work.c:186
__sysvec_irq_work+0x98/0x240 arch/x86/kernel/irq_work.c:22
instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline]
sysvec_irq_work+0x4a/0xc0 arch/x86/kernel/irq_work.c:17
asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:rcu_read_unlock_special+0x7f/0x4a0 kernel/rcu/tree_plugin.h:674
Code: eb 03 48 b8 f1 f1 f1 f1 f8 f2 f2 f2 4a 89 04 2b 42 c7 44 2b 08 f8 f3 f3 f3 65 44 8b 35 12 f2 9c 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc90000007940 EFLAGS: 00000206
RAX: 22dd85cef0e10400 RBX: 1ffff92000000f2c RCX: 22dd85cef0e10400
RDX: dffffc0000000000 RSI: ffffffff8a2b2780 RDI: ffffffff8a79f980
RBP: ffffc90000007a20 R08: ffffffff901d41bf R09: 1ffffffff203a837
R10: dffffc0000000000 R11: fffffbfff203a838 R12: ffffffff8c322f00
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
__rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
rcu_read_unlock include/linux/rcupdate.h:772 [inline]
aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:451 [inline]
aoecmd_cfg+0x885/0x910 drivers/block/aoe/aoecmd.c:1371
call_timer_fn+0x17b/0x540 kernel/time/timer.c:1648
expire_timers kernel/time/timer.c:1699 [inline]
__run_timers+0x53e/0x800 kernel/time/timer.c:1970
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1983
handle_softirqs+0x339/0x830 kernel/softirq.c:576
__do_softirq kernel/softirq.c:610 [inline]
invoke_softirq kernel/softirq.c:450 [inline]
__irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659
irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:console_unlock+0xcad/0x1120 kernel/printk/printk.c:2749
Code: 75 11 e8 36 da 18 00 4d 85 ff 75 16 e8 2c da 18 00 eb 15 e8 25 da 18 00 e8 e0 21 5c 08 4d 85 ff 74 ea e8 16 da 18 00 fb 31 ff <89> de e8 6c dd 18 00 85 db 0f 94 c0 22 44 24 17 3c 01 75 1f e8 fa
RSP: 0018:ffffc90002e8eda0 EFLAGS: 00000246
RAX: ffffffff816046fa RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc900137a9000 RSI: 0000000000001fde RDI: 0000000000000000
RBP: ffffc90002e8f010 R08: ffffffff901d40c7 R09: 1ffffffff203a818
R10: dffffc0000000000 R11: fffffbfff203a819 R12: 1ffffffff198d6fd
R13: 0000000000000057 R14: 0000000000000000 R15: 0000000000000200
vprintk_emit+0xc0/0x150 kernel/printk/printk.c:2274
_printk+0xda/0x130 kernel/printk/printk.c:2299
validate_nla lib/nlattr.c:379 [inline]
__nla_validate_parse+0x1746/0x2780 lib/nlattr.c:591
__nla_parse+0x3c/0x50 lib/nlattr.c:688
__nlmsg_parse include/net/netlink.h:733 [inline]
nlmsg_parse_deprecated include/net/netlink.h:772 [inline]
rtnl_valid_dump_ifinfo_req net/core/rtnetlink.c:2104 [inline]
rtnl_dump_ifinfo+0x40e/0x1470 net/core/rtnetlink.c:2129
netlink_dump+0x694/0xcf0 net/netlink/af_netlink.c:2283
netlink_recvmsg+0x672/0xe20 net/netlink/af_netlink.c:2001
____sys_recvmsg+0x2cd/0x5e0 net/socket.c:-1
___sys_recvmsg+0x21a/0x5c0 net/socket.c:2706
__sys_recvmsg net/socket.c:2736 [inline]
__do_sys_recvmsg net/socket.c:2746 [inline]
__se_sys_recvmsg net/socket.c:2743 [inline]
__x64_sys_recvmsg+0x1f9/0x2c0 net/socket.c:2743
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f682dfd8799
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:00007f682c232028 EFLAGS: 00000246 ORIG_RAX: 000000000000002f
RAX: ffffffffffffffda RBX: 00007f682e251fa0 RCX: 00007f682dfd8799
RDX: 0000000000000000 RSI: 0000200000000900 RDI: 0000000000000003
RBP: 00007f682e06ec99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f682e252038 R14: 00007f682e251fa0 R15: 00007fff927dec28
</TASK>
NMI backtrace for cpu 0
CPU: 0 PID: 18209 Comm: syz.1.3993 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:debug_smp_processor_id+0x0/0x10 lib/smp_processor_id.c:60
Code: 32 8a e8 43 01 00 00 65 c7 05 b8 db 46 76 00 00 00 00 48 c7 c7 20 e8 32 8a e8 2c 01 00 00 65 ff 0d a1 db 46 76 5b c3 00 00 cc <48> c7 c7 20 f9 79 8a 48 c7 c6 60 f9 79 8a eb 00 55 41 57 41 56 53
RSP: 0018:ffffc90000007708 EFLAGS: 00000046
RAX: ffffffff819872cd RBX: 0000000000000014 RCX: ffff88802c0d9dc0
RDX: 0000000000000100 RSI: 0000000000000014 RDI: 0000000000002000
RBP: ffffc90000007848 R08: ffff8880b903b30b R09: 1ffff11017207661
R10: dffffc0000000000 R11: ffffed1017207662 R12: ffffe8ffffc35418
R13: dffffc0000000000 R14: ffffc900000077c0 R15: ffffc900000077e0
FS: 00007f682c2326c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffa2b7d26b8 CR3: 000000005a21b000 CR4: 00000000003506f0
DR0: 0000000000000004 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
<IRQ>
perf_swevent_get_recursion_context+0x12/0x150 kernel/events/core.c:9742
perf_trace_buf_alloc+0x54/0x300 kernel/trace/trace_event_perf.c:414
perf_trace_preemptirq_template+0x180/0x360 include/trace/events/preemptirq.h:14
trace_irq_enable_rcuidle+0x108/0x180 include/trace/events/preemptirq.h:40
trace_hardirqs_on+0x57/0x80 kernel/trace/trace_preemptirq.c:44
asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:rcu_read_unlock_special+0x7f/0x4a0 kernel/rcu/tree_plugin.h:674
Code: eb 03 48 b8 f1 f1 f1 f1 f8 f2 f2 f2 4a 89 04 2b 42 c7 44 2b 08 f8 f3 f3 f3 65 44 8b 35 12 f2 9c 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc90000007940 EFLAGS: 00000206
RAX: 22dd85cef0e10400 RBX: 1ffff92000000f2c RCX: 22dd85cef0e10400
RDX: dffffc0000000000 RSI: ffffffff8a2b2780 RDI: ffffffff8a79f980
RBP: ffffc90000007a20 R08: ffffffff901d41bf R09: 1ffffffff203a837
R10: dffffc0000000000 R11: fffffbfff203a838 R12: ffffffff8c322f00
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
__rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
rcu_read_unlock include/linux/rcupdate.h:772 [inline]
aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:451 [inline]
aoecmd_cfg+0x885/0x910 drivers/block/aoe/aoecmd.c:1371
call_timer_fn+0x17b/0x540 kernel/time/timer.c:1648
expire_timers kernel/time/timer.c:1699 [inline]
__run_timers+0x53e/0x800 kernel/time/timer.c:1970
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1983
handle_softirqs+0x339/0x830 kernel/softirq.c:576
__do_softirq kernel/softirq.c:610 [inline]
invoke_softirq kernel/softirq.c:450 [inline]
__irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659
irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:console_unlock+0xcad/0x1120 kernel/printk/printk.c:2749
Code: 75 11 e8 36 da 18 00 4d 85 ff 75 16 e8 2c da 18 00 eb 15 e8 25 da 18 00 e8 e0 21 5c 08 4d 85 ff 74 ea e8 16 da 18 00 fb 31 ff <89> de e8 6c dd 18 00 85 db 0f 94 c0 22 44 24 17 3c 01 75 1f e8 fa
RSP: 0018:ffffc90002e8eda0 EFLAGS: 00000246
RAX: ffffffff816046fa RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc900137a9000 RSI: 0000000000001fde RDI: 0000000000000000
RBP: ffffc90002e8f010 R08: ffffffff901d40c7 R09: 1ffffffff203a818
R10: dffffc0000000000 R11: fffffbfff203a819 R12: 1ffffffff198d6fd
R13: 0000000000000057 R14: 0000000000000000 R15: 0000000000000200
vprintk_emit+0xc0/0x150 kernel/printk/printk.c:2274
_printk+0xda/0x130 kernel/printk/printk.c:2299
validate_nla lib/nlattr.c:379 [inline]
__nla_validate_parse+0x1746/0x2780 lib/nlattr.c:591
__nla_parse+0x3c/0x50 lib/nlattr.c:688
__nlmsg_parse include/net/netlink.h:733 [inline]
nlmsg_parse_deprecated include/net/netlink.h:772 [inline]
rtnl_valid_dump_ifinfo_req net/core/rtnetlink.c:2104 [inline]
rtnl_dump_ifinfo+0x40e/0x1470 net/core/rtnetlink.c:2129
netlink_dump+0x694/0xcf0 net/netlink/af_netlink.c:2283
netlink_recvmsg+0x672/0xe20 net/netlink/af_netlink.c:2001
____sys_recvmsg+0x2cd/0x5e0 net/socket.c:-1
___sys_recvmsg+0x21a/0x5c0 net/socket.c:2706
__sys_recvmsg net/socket.c:2736 [inline]
__do_sys_recvmsg net/socket.c:2746 [inline]
__se_sys_recvmsg net/socket.c:2743 [inline]
__x64_sys_recvmsg+0x1f9/0x2c0 net/socket.c:2743
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f682dfd8799
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:00007f682c232028 EFLAGS: 00000246 ORIG_RAX: 000000000000002f
RAX: ffffffffffffffda RBX: 00007f682e251fa0 RCX: 00007f682dfd8799
RDX: 0000000000000000 RSI: 0000200000000900 RDI: 0000000000000003
RBP: 00007f682e06ec99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f682e252038 R14: 00007f682e251fa0 R15: 00007fff927dec28
</TASK>
---
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If you want to undo deduplication, reply with:
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syzbot found the following issue on:
HEAD commit: 91d48252ad4b Linux 5.15.202
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=1502d6da580000
kernel config: https://syzkaller.appspot.com/x/.config?x=353ae28c40b35af5
dashboard link: https://syzkaller.appspot.com/bug?extid=4ad5319111bc1c4f0ac2
compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/1f63ca11335d/disk-91d48252.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/85d7c8824423/vmlinux-91d48252.xz
kernel image: https://storage.googleapis.com/syzbot-assets/11897ccd5b62/bzImage-91d48252.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+4ad531...@syzkaller.appspotmail.com
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-....: (1 GPs behind) idle=343/1/0x4000000000000002 softirq=51458/51459 fqs=5093
(detected by 1, t=10502 jiffies, g=72241, q=1070)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 18209 Comm: syz.1.3993 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:irq_work_run_list+0x0/0x340 kernel/irq_work.c:166
Code: c7 c7 60 10 38 8c 48 89 de e8 2c e7 7e 02 e9 63 ff ff ff e8 22 15 f4 ff 48 c7 c7 80 10 38 8c 48 89 de e8 13 e7 7e 02 eb a3 90 <55> 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec 80 00
RSP: 0018:ffffc90000007840 EFLAGS: 00000082
RAX: 1ffffffff17c6304 RBX: ffffffff8be31820 RCX: ffff88802c0d9dc0
RDX: 0000000000010100 RSI: 0000000000000000 RDI: ffff8880b9033d70
RBP: 0000000000000000 R08: ffffffff8d89e36f R09: 1ffffffff1b13c6d
R10: dffffc0000000000 R11: fffffbfff1b13c6e R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
FS: 00007f682c2326c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffa2b7d26b8 CR3: 000000005a21b000 CR4: 00000000003506f0
DR0: 0000000000000004 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
<IRQ>
irq_work_run+0x63/0xe0 kernel/irq_work.c:186
__sysvec_irq_work+0x98/0x240 arch/x86/kernel/irq_work.c:22
instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline]
sysvec_irq_work+0x4a/0xc0 arch/x86/kernel/irq_work.c:17
asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:rcu_read_unlock_special+0x7f/0x4a0 kernel/rcu/tree_plugin.h:674
Code: eb 03 48 b8 f1 f1 f1 f1 f8 f2 f2 f2 4a 89 04 2b 42 c7 44 2b 08 f8 f3 f3 f3 65 44 8b 35 12 f2 9c 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc90000007940 EFLAGS: 00000206
RAX: 22dd85cef0e10400 RBX: 1ffff92000000f2c RCX: 22dd85cef0e10400
RDX: dffffc0000000000 RSI: ffffffff8a2b2780 RDI: ffffffff8a79f980
RBP: ffffc90000007a20 R08: ffffffff901d41bf R09: 1ffffffff203a837
R10: dffffc0000000000 R11: fffffbfff203a838 R12: ffffffff8c322f00
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
__rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
rcu_read_unlock include/linux/rcupdate.h:772 [inline]
aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:451 [inline]
aoecmd_cfg+0x885/0x910 drivers/block/aoe/aoecmd.c:1371
call_timer_fn+0x17b/0x540 kernel/time/timer.c:1648
expire_timers kernel/time/timer.c:1699 [inline]
__run_timers+0x53e/0x800 kernel/time/timer.c:1970
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1983
handle_softirqs+0x339/0x830 kernel/softirq.c:576
__do_softirq kernel/softirq.c:610 [inline]
invoke_softirq kernel/softirq.c:450 [inline]
__irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659
irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:console_unlock+0xcad/0x1120 kernel/printk/printk.c:2749
Code: 75 11 e8 36 da 18 00 4d 85 ff 75 16 e8 2c da 18 00 eb 15 e8 25 da 18 00 e8 e0 21 5c 08 4d 85 ff 74 ea e8 16 da 18 00 fb 31 ff <89> de e8 6c dd 18 00 85 db 0f 94 c0 22 44 24 17 3c 01 75 1f e8 fa
RSP: 0018:ffffc90002e8eda0 EFLAGS: 00000246
RAX: ffffffff816046fa RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc900137a9000 RSI: 0000000000001fde RDI: 0000000000000000
RBP: ffffc90002e8f010 R08: ffffffff901d40c7 R09: 1ffffffff203a818
R10: dffffc0000000000 R11: fffffbfff203a819 R12: 1ffffffff198d6fd
R13: 0000000000000057 R14: 0000000000000000 R15: 0000000000000200
vprintk_emit+0xc0/0x150 kernel/printk/printk.c:2274
_printk+0xda/0x130 kernel/printk/printk.c:2299
validate_nla lib/nlattr.c:379 [inline]
__nla_validate_parse+0x1746/0x2780 lib/nlattr.c:591
__nla_parse+0x3c/0x50 lib/nlattr.c:688
__nlmsg_parse include/net/netlink.h:733 [inline]
nlmsg_parse_deprecated include/net/netlink.h:772 [inline]
rtnl_valid_dump_ifinfo_req net/core/rtnetlink.c:2104 [inline]
rtnl_dump_ifinfo+0x40e/0x1470 net/core/rtnetlink.c:2129
netlink_dump+0x694/0xcf0 net/netlink/af_netlink.c:2283
netlink_recvmsg+0x672/0xe20 net/netlink/af_netlink.c:2001
____sys_recvmsg+0x2cd/0x5e0 net/socket.c:-1
___sys_recvmsg+0x21a/0x5c0 net/socket.c:2706
__sys_recvmsg net/socket.c:2736 [inline]
__do_sys_recvmsg net/socket.c:2746 [inline]
__se_sys_recvmsg net/socket.c:2743 [inline]
__x64_sys_recvmsg+0x1f9/0x2c0 net/socket.c:2743
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f682dfd8799
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:00007f682c232028 EFLAGS: 00000246 ORIG_RAX: 000000000000002f
RAX: ffffffffffffffda RBX: 00007f682e251fa0 RCX: 00007f682dfd8799
RDX: 0000000000000000 RSI: 0000200000000900 RDI: 0000000000000003
RBP: 00007f682e06ec99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f682e252038 R14: 00007f682e251fa0 R15: 00007fff927dec28
</TASK>
NMI backtrace for cpu 0
CPU: 0 PID: 18209 Comm: syz.1.3993 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:debug_smp_processor_id+0x0/0x10 lib/smp_processor_id.c:60
Code: 32 8a e8 43 01 00 00 65 c7 05 b8 db 46 76 00 00 00 00 48 c7 c7 20 e8 32 8a e8 2c 01 00 00 65 ff 0d a1 db 46 76 5b c3 00 00 cc <48> c7 c7 20 f9 79 8a 48 c7 c6 60 f9 79 8a eb 00 55 41 57 41 56 53
RSP: 0018:ffffc90000007708 EFLAGS: 00000046
RAX: ffffffff819872cd RBX: 0000000000000014 RCX: ffff88802c0d9dc0
RDX: 0000000000000100 RSI: 0000000000000014 RDI: 0000000000002000
RBP: ffffc90000007848 R08: ffff8880b903b30b R09: 1ffff11017207661
R10: dffffc0000000000 R11: ffffed1017207662 R12: ffffe8ffffc35418
R13: dffffc0000000000 R14: ffffc900000077c0 R15: ffffc900000077e0
FS: 00007f682c2326c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffa2b7d26b8 CR3: 000000005a21b000 CR4: 00000000003506f0
DR0: 0000000000000004 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
<IRQ>
perf_swevent_get_recursion_context+0x12/0x150 kernel/events/core.c:9742
perf_trace_buf_alloc+0x54/0x300 kernel/trace/trace_event_perf.c:414
perf_trace_preemptirq_template+0x180/0x360 include/trace/events/preemptirq.h:14
trace_irq_enable_rcuidle+0x108/0x180 include/trace/events/preemptirq.h:40
trace_hardirqs_on+0x57/0x80 kernel/trace/trace_preemptirq.c:44
asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:rcu_read_unlock_special+0x7f/0x4a0 kernel/rcu/tree_plugin.h:674
Code: eb 03 48 b8 f1 f1 f1 f1 f8 f2 f2 f2 4a 89 04 2b 42 c7 44 2b 08 f8 f3 f3 f3 65 44 8b 35 12 f2 9c 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc90000007940 EFLAGS: 00000206
RAX: 22dd85cef0e10400 RBX: 1ffff92000000f2c RCX: 22dd85cef0e10400
RDX: dffffc0000000000 RSI: ffffffff8a2b2780 RDI: ffffffff8a79f980
RBP: ffffc90000007a20 R08: ffffffff901d41bf R09: 1ffffffff203a837
R10: dffffc0000000000 R11: fffffbfff203a838 R12: ffffffff8c322f00
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
__rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
rcu_read_unlock include/linux/rcupdate.h:772 [inline]
aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:451 [inline]
aoecmd_cfg+0x885/0x910 drivers/block/aoe/aoecmd.c:1371
call_timer_fn+0x17b/0x540 kernel/time/timer.c:1648
expire_timers kernel/time/timer.c:1699 [inline]
__run_timers+0x53e/0x800 kernel/time/timer.c:1970
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1983
handle_softirqs+0x339/0x830 kernel/softirq.c:576
__do_softirq kernel/softirq.c:610 [inline]
invoke_softirq kernel/softirq.c:450 [inline]
__irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659
irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:console_unlock+0xcad/0x1120 kernel/printk/printk.c:2749
Code: 75 11 e8 36 da 18 00 4d 85 ff 75 16 e8 2c da 18 00 eb 15 e8 25 da 18 00 e8 e0 21 5c 08 4d 85 ff 74 ea e8 16 da 18 00 fb 31 ff <89> de e8 6c dd 18 00 85 db 0f 94 c0 22 44 24 17 3c 01 75 1f e8 fa
RSP: 0018:ffffc90002e8eda0 EFLAGS: 00000246
RAX: ffffffff816046fa RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc900137a9000 RSI: 0000000000001fde RDI: 0000000000000000
RBP: ffffc90002e8f010 R08: ffffffff901d40c7 R09: 1ffffffff203a818
R10: dffffc0000000000 R11: fffffbfff203a819 R12: 1ffffffff198d6fd
R13: 0000000000000057 R14: 0000000000000000 R15: 0000000000000200
vprintk_emit+0xc0/0x150 kernel/printk/printk.c:2274
_printk+0xda/0x130 kernel/printk/printk.c:2299
validate_nla lib/nlattr.c:379 [inline]
__nla_validate_parse+0x1746/0x2780 lib/nlattr.c:591
__nla_parse+0x3c/0x50 lib/nlattr.c:688
__nlmsg_parse include/net/netlink.h:733 [inline]
nlmsg_parse_deprecated include/net/netlink.h:772 [inline]
rtnl_valid_dump_ifinfo_req net/core/rtnetlink.c:2104 [inline]
rtnl_dump_ifinfo+0x40e/0x1470 net/core/rtnetlink.c:2129
netlink_dump+0x694/0xcf0 net/netlink/af_netlink.c:2283
netlink_recvmsg+0x672/0xe20 net/netlink/af_netlink.c:2001
____sys_recvmsg+0x2cd/0x5e0 net/socket.c:-1
___sys_recvmsg+0x21a/0x5c0 net/socket.c:2706
__sys_recvmsg net/socket.c:2736 [inline]
__do_sys_recvmsg net/socket.c:2746 [inline]
__se_sys_recvmsg net/socket.c:2743 [inline]
__x64_sys_recvmsg+0x1f9/0x2c0 net/socket.c:2743
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f682dfd8799
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:00007f682c232028 EFLAGS: 00000246 ORIG_RAX: 000000000000002f
RAX: ffffffffffffffda RBX: 00007f682e251fa0 RCX: 00007f682dfd8799
RDX: 0000000000000000 RSI: 0000200000000900 RDI: 0000000000000003
RBP: 00007f682e06ec99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f682e252038 R14: 00007f682e251fa0 R15: 00007fff927dec28
</TASK>
---
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