INFO: rcu detected stall in ip6addrlbl_newdel

Status: auto-obsoleted due to no activity on 2025/05/18 08:33
Subsystems: net
[Documentation on labels]
First crash: 609d, last: 609d

Sample crash report:
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...0: (1 GPs behind) idle=4824/1/0x4000000000000000 softirq=294407/294408 fqs=2100
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:        0          0            0
rcu: 	cputime:        0          0            0   ==> 52500(ms)
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P12/1:b..l
rcu: 	(detected by 1, t=10505 jiffies, g=253213, q=269 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 16662 Comm: syz.7.13282 Not tainted 6.14.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:iterate_chain_key kernel/locking/lockdep.c:450 [inline]
RIP: 0010:__lock_acquire+0xd2c/0x3c40 kernel/locking/lockdep.c:5216
Code: 24 98 29 d8 8b 5c 24 68 31 d8 8b 5c 24 58 89 c2 29 c1 c1 c2 06 31 ca 01 d8 29 d3 89 d9 89 d3 01 c2 c1 c3 08 31 cb 89 d9 29 d8 <01> d3 c1 c1 10 89 de 31 c8 89 c1 29 c2 01 d8 c1 c9 0d 31 d1 89 ca
RSP: 0018:ffffc90000007b38 EFLAGS: 00000016
RAX: 00000000039c8bbd RBX: 00000000fc6365fb RCX: 00000000fc6365fb
RDX: 00000000fffc52b2 RSI: 0000000000000008 RDI: ffffffff96f74640
RBP: ffffffff96ec2978 R08: 0000000000000000 R09: fffffbfff2dd83d1
R10: ffffffff96ec1e8f R11: 0000000000000002 R12: ffff8880360253b9
R13: ffff888036024880 R14: 0000000000000003 R15: ffff8880360253c0
FS:  00007ff8adfd56c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff8adfb4d58 CR3: 000000004937a000 CR4: 00000000003526f0
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5851
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:351 [inline]
 advance_sched+0xd8/0xc60 net/sched/sch_taprio.c:924
 __run_hrtimer kernel/time/hrtimer.c:1801 [inline]
 __hrtimer_run_queues+0x20a/0xae0 kernel/time/hrtimer.c:1865
 hrtimer_interrupt+0x392/0x8e0 kernel/time/hrtimer.c:1927
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x10f/0x400 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:memchr+0x0/0x80 lib/string.c:799
Code: e8 85 b4 c9 f6 48 8b 14 24 e9 79 ff ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 55 48 01 fa 48 bd 00 00 00 00 00 fc ff df 53 48 83 ec
RSP: 0018:ffffc90003496e40 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 000000000000004d RCX: 0000000000000007
RDX: 000000000000004d RSI: 000000000000000a RDI: ffffffff9a87b4c0
RBP: ffffc90003496fa0 R08: 0000000000000007 R09: 0000000000000000
R10: 000000007fffffff R11: 00000000001645b0 R12: 0000000000000017
R13: 0000000000000800 R14: 0000000000000000 R15: ffffffff9a87b4c0
 memchr include/linux/fortify-string.h:739 [inline]
 record_print_text+0x16b/0x400 kernel/printk/printk.c:1465
 printk_get_next_message+0x2be/0x690 kernel/printk/printk.c:3008
 console_emit_next_record kernel/printk/printk.c:3076 [inline]
 console_flush_all+0x6ec/0xc60 kernel/printk/printk.c:3210
 __console_flush_and_unlock kernel/printk/printk.c:3269 [inline]
 console_unlock+0xd9/0x210 kernel/printk/printk.c:3309
 vprintk_emit+0x424/0x6f0 kernel/printk/printk.c:2432
 _printk+0xc8/0x100 kernel/printk/printk.c:2457
 __nla_validate_parse+0x753/0x2880 lib/nlattr.c:647
 __nla_parse+0x40/0x60 lib/nlattr.c:732
 __nlmsg_parse include/net/netlink.h:764 [inline]
 nlmsg_parse_deprecated include/net/netlink.h:805 [inline]
 ip6addrlbl_newdel+0x17c/0x970 net/ipv6/addrlabel.c:395
 rtnetlink_rcv_msg+0x95b/0xea0 net/core/rtnetlink.c:6912
 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2543
 netlink_unicast_kernel net/netlink/af_netlink.c:1322 [inline]
 netlink_unicast+0x53c/0x7f0 net/netlink/af_netlink.c:1348
 netlink_sendmsg+0x8b8/0xd70 net/netlink/af_netlink.c:1892
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg net/socket.c:733 [inline]
 ____sys_sendmsg+0xaaf/0xc90 net/socket.c:2573
 ___sys_sendmsg+0x135/0x1e0 net/socket.c:2627
 __sys_sendmsg+0x16e/0x220 net/socket.c:2659
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff8b018cde9
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:00007ff8adfd5038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007ff8b03a6080 RCX: 00007ff8b018cde9
RDX: 0000000000000000 RSI: 0000400000000000 RDI: 0000000000000004
RBP: 00007ff8b020e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007ff8b03a6080 R15: 00007ffd7d6e2e48
 </TASK>
task:kworker/u8:1    state:R  running task     stack:22144 pid:12    tgid:12    ppid:2      task_flags:0x4208160 flags:0x00004000
Workqueue: bat_events batadv_nc_worker
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5378 [inline]
 __schedule+0xf43/0x5890 kernel/sched/core.c:6765
 preempt_schedule_notrace+0x62/0xe0 kernel/sched/core.c:7037
 preempt_schedule_notrace_thunk+0x1a/0x30 arch/x86/entry/thunk.S:13
 rcu_is_watching+0x8e/0xc0 kernel/rcu/tree.c:717
 trace_lock_acquire+0x14e/0x1f0 include/trace/events/lock.h:24
 lock_acquire+0x2f/0xb0 kernel/locking/lockdep.c:5822
 rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 rcu_read_lock include/linux/rcupdate.h:849 [inline]
 batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
 batadv_nc_worker+0x16a/0x1060 net/batman-adv/network-coding.c:719
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3317 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
 kthread+0x3af/0x750 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 16662 Comm: syz.7.13282 Not tainted 6.14.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:rb_link_node include/linux/rbtree.h:63 [inline]
RIP: 0010:rb_add_cached include/linux/rbtree.h:182 [inline]
RIP: 0010:timerqueue_add+0x240/0x330 lib/timerqueue.c:40
Code: 3c 02 00 0f 85 ca 00 00 00 48 8d 7d 10 48 c7 45 08 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 <0f> 85 92 00 00 00 48 8b 04 24 48 c7 45 10 00 00 00 00 48 89 28 e8
RSP: 0018:ffffc90000007df0 EFLAGS: 00000046
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff8b534c18
RDX: 1ffff1100ca00e6a RSI: ffffffff8b534dad RDI: ffff888065007350
RBP: ffff888065007340 R08: 0000000000000006 R09: ffff888065007340
R10: ffff888065007340 R11: 0000000000000003 R12: ffff888065007340
R13: ffff8880b862c780 R14: ffff8880b862c680 R15: ffffffff896a5f80
FS:  00007ff8adfd56c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff8adfb4d58 CR3: 000000004937a000 CR4: 00000000003526f0
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 __run_hrtimer kernel/time/hrtimer.c:1818 [inline]
 __hrtimer_run_queues+0x903/0xae0 kernel/time/hrtimer.c:1865
 hrtimer_interrupt+0x392/0x8e0 kernel/time/hrtimer.c:1927
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x10f/0x400 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:memchr+0x0/0x80 lib/string.c:799
Code: e8 85 b4 c9 f6 48 8b 14 24 e9 79 ff ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 55 48 01 fa 48 bd 00 00 00 00 00 fc ff df 53 48 83 ec
RSP: 0018:ffffc90003496e40 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 000000000000004d RCX: 0000000000000007
RDX: 000000000000004d RSI: 000000000000000a RDI: ffffffff9a87b4c0
RBP: ffffc90003496fa0 R08: 0000000000000007 R09: 0000000000000000
R10: 000000007fffffff R11: 00000000001645b0 R12: 0000000000000017
R13: 0000000000000800 R14: 0000000000000000 R15: ffffffff9a87b4c0
 memchr include/linux/fortify-string.h:739 [inline]
 record_print_text+0x16b/0x400 kernel/printk/printk.c:1465
 printk_get_next_message+0x2be/0x690 kernel/printk/printk.c:3008
 console_emit_next_record kernel/printk/printk.c:3076 [inline]
 console_flush_all+0x6ec/0xc60 kernel/printk/printk.c:3210
 __console_flush_and_unlock kernel/printk/printk.c:3269 [inline]
 console_unlock+0xd9/0x210 kernel/printk/printk.c:3309
 vprintk_emit+0x424/0x6f0 kernel/printk/printk.c:2432
 _printk+0xc8/0x100 kernel/printk/printk.c:2457
 __nla_validate_parse+0x753/0x2880 lib/nlattr.c:647
 __nla_parse+0x40/0x60 lib/nlattr.c:732
 __nlmsg_parse include/net/netlink.h:764 [inline]
 nlmsg_parse_deprecated include/net/netlink.h:805 [inline]
 ip6addrlbl_newdel+0x17c/0x970 net/ipv6/addrlabel.c:395
 rtnetlink_rcv_msg+0x95b/0xea0 net/core/rtnetlink.c:6912
 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2543
 netlink_unicast_kernel net/netlink/af_netlink.c:1322 [inline]
 netlink_unicast+0x53c/0x7f0 net/netlink/af_netlink.c:1348
 netlink_sendmsg+0x8b8/0xd70 net/netlink/af_netlink.c:1892
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg net/socket.c:733 [inline]
 ____sys_sendmsg+0xaaf/0xc90 net/socket.c:2573
 ___sys_sendmsg+0x135/0x1e0 net/socket.c:2627
 __sys_sendmsg+0x16e/0x220 net/socket.c:2659
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff8b018cde9
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:00007ff8adfd5038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007ff8b03a6080 RCX: 00007ff8b018cde9
RDX: 0000000000000000 RSI: 0000400000000000 RDI: 0000000000000004
RBP: 00007ff8b020e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007ff8b03a6080 R15: 00007ffd7d6e2e48
 </TASK>
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 16662 Comm: syz.7.13282 Not tainted 6.14.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:__raw_callee_save___pv_queued_spin_unlock+0x10/0x18
Code: 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 52 b8 01 00 00 00 31 d2 f0 0f b0 17 <75> 06 5a c3 cc cc cc cc 56 0f b6 f0 e8 9f ff ff ff 5e 5a c3 cc cc
RSP: 0018:ffffc90000007de8 EFLAGS: 00000046
RAX: 0000000000000001 RBX: ffff8880b862c680 RCX: ffffffff81971ed3
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8880b862c680
RBP: ffff8880b862c688 R08: 0000000000000000 R09: ffffed10170c58d0
R10: ffff8880b862c683 R11: 0000000000000003 R12: ffff8880b862c690
R13: ffff8880b862c780 R14: ffff8880b862c680 R15: ffffffff896a5f80
FS:  00007ff8adfd56c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff8adfb4d58 CR3: 000000004937a000 CR4: 00000000003526f0
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 pv_queued_spin_unlock arch/x86/include/asm/paravirt.h:582 [inline]
 queued_spin_unlock arch/x86/include/asm/qspinlock.h:57 [inline]
 do_raw_spin_unlock+0x172/0x230 kernel/locking/spinlock_debug.c:142
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:150 [inline]
 _raw_spin_unlock_irqrestore+0x22/0x80 kernel/locking/spinlock.c:194
 __run_hrtimer kernel/time/hrtimer.c:1797 [inline]
 __hrtimer_run_queues+0x53d/0xae0 kernel/time/hrtimer.c:1865
 hrtimer_interrupt+0x392/0x8e0 kernel/time/hrtimer.c:1927
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x10f/0x400 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:memchr+0x0/0x80 lib/string.c:799
Code: e8 85 b4 c9 f6 48 8b 14 24 e9 79 ff ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 55 48 01 fa 48 bd 00 00 00 00 00 fc ff df 53 48 83 ec
RSP: 0018:ffffc90003496e40 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 000000000000004d RCX: 0000000000000007
RDX: 000000000000004d RSI: 000000000000000a RDI: ffffffff9a87b4c0
RBP: ffffc90003496fa0 R08: 0000000000000007 R09: 0000000000000000
R10: 000000007fffffff R11: 00000000001645b0 R12: 0000000000000017
R13: 0000000000000800 R14: 0000000000000000 R15: ffffffff9a87b4c0
 memchr include/linux/fortify-string.h:739 [inline]
 record_print_text+0x16b/0x400 kernel/printk/printk.c:1465
 printk_get_next_message+0x2be/0x690 kernel/printk/printk.c:3008
 console_emit_next_record kernel/printk/printk.c:3076 [inline]
 console_flush_all+0x6ec/0xc60 kernel/printk/printk.c:3210
 __console_flush_and_unlock kernel/printk/printk.c:3269 [inline]
 console_unlock+0xd9/0x210 kernel/printk/printk.c:3309
 vprintk_emit+0x424/0x6f0 kernel/printk/printk.c:2432
 _printk+0xc8/0x100 kernel/printk/printk.c:2457
 __nla_validate_parse+0x753/0x2880 lib/nlattr.c:647
 __nla_parse+0x40/0x60 lib/nlattr.c:732
 __nlmsg_parse include/net/netlink.h:764 [inline]
 nlmsg_parse_deprecated include/net/netlink.h:805 [inline]
 ip6addrlbl_newdel+0x17c/0x970 net/ipv6/addrlabel.c:395
 rtnetlink_rcv_msg+0x95b/0xea0 net/core/rtnetlink.c:6912
 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2543
 netlink_unicast_kernel net/netlink/af_netlink.c:1322 [inline]
 netlink_unicast+0x53c/0x7f0 net/netlink/af_netlink.c:1348
 netlink_sendmsg+0x8b8/0xd70 net/netlink/af_netlink.c:1892
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg net/socket.c:733 [inline]
 ____sys_sendmsg+0xaaf/0xc90 net/socket.c:2573
 ___sys_sendmsg+0x135/0x1e0 net/socket.c:2627
 __sys_sendmsg+0x16e/0x220 net/socket.c:2659
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff8b018cde9
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:00007ff8adfd5038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007ff8b03a6080 RCX: 00007ff8b018cde9
RDX: 0000000000000000 RSI: 0000400000000000 RDI: 0000000000000004
RBP: 00007ff8b020e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007ff8b03a6080 R15: 00007ffd7d6e2e48
 </TASK>

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/02/17 08:31 upstream 0ad2507d5d93 40a34ec9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: rcu detected stall in ip6addrlbl_newdel
* Struck through repros no longer work on HEAD.