INFO: rcu detected stall in tc_modify_qdisc (2)

Status: upstream: reported C repro on 2024/11/08 00:04
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+3e756bb26a645ac581b7@syzkaller.appspotmail.com
First crash: 655d, last: 68d
Fix bisection: failed (error log, bisect log)
  
▶ ▼ Bug presence (1)
Date Name Commit Repro Result
2024/12/15 upstream (ToT) 2d8308bf5b67 C [report] INFO: rcu detected stall in do_idle
▶ ▼ Similar bugs (13)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.6 INFO: rcu detected stall in tc_modify_qdisc 1 1 431d 431d 0/2 auto-obsoleted due to no activity on 2025/09/27 23:42
linux-6.1 INFO: rcu detected stall in tc_modify_qdisc 1 3 771d 810d 0/3 auto-obsoleted due to no activity on 2024/10/23 00:42
linux-6.6 INFO: rcu detected stall in tc_modify_qdisc (2) 1 1 260d 260d 0/2 auto-obsoleted due to no activity on 2026/03/17 12:53
upstream INFO: rcu detected stall in tc_modify_qdisc prio:normal net 1 syz, C done 670 9h12m 2218d 0/29 upstream: reported C repro on 2020/07/29 05:53
linux-5.15 INFO: rcu detected stall in tc_modify_qdisc origin:lts-only 1 syz, C error 31 13d 741d 0/3 upstream: reported C repro on 2024/08/13 15:46
android-6-1 BUG: soft lockup in tc_modify_qdisc 1 syz, C done done 53 1001d 1033d 0/2 auto-obsoleted due to no activity on 2024/02/06 04:01
android-5-15 BUG: soft lockup in tc_modify_qdisc (2) origin:lts 1 syz, C 41 2d20h 184d 0/2 upstream: reported C repro on 2026/02/22 06:27
android-5-15 BUG: soft lockup in tc_modify_qdisc origin:lts 1 syz, C done done 254 1090d 1145d 0/2 auto-obsoleted due to no activity on 2023/11/09 01:01
linux-5.15 BUG: soft lockup in tc_modify_qdisc origin:upstream 1 syz, C error 1 1179d 1179d 0/3 auto-obsoleted due to no activity on 2023/09/11 01:53
android-6-1 BUG: soft lockup in tc_modify_qdisc (2) origin:lts 1 syz, C error 9 4d23h 173d 0/2 upstream: reported C repro on 2026/03/05 09:26
linux-6.1 BUG: soft lockup in tc_modify_qdisc origin:upstream 1 syz, C done 1 1178d 1178d 3/3 fixed on 2023/07/10 11:22
android-5-10 BUG: soft lockup in tc_modify_qdisc 1 syz, C done done 314 1092d 1145d 0/2 auto-obsoleted due to no activity on 2023/11/07 07:54
android-5-10 BUG: soft lockup in tc_modify_qdisc (2) 1 syz, C 103 2d01h 354d 0/2 upstream: reported C repro on 2025/09/05 07:56
▶ ▼ Fix bisection attempts (7)
Created Duration User Patch Repo Result
2026/02/08 22:48 0m bisect fix linux-6.1.y error job log
2025/09/11 00:33 2h09m bisect fix linux-6.1.y OK (0) job log log
2025/07/06 01:41 2h15m bisect fix linux-6.1.y OK (0) job log log
2025/04/30 06:49 2h03m bisect fix linux-6.1.y OK (0) job log log
2025/03/27 23:48 2h23m bisect fix linux-6.1.y OK (0) job log log
2025/02/23 08:19 1h46m bisect fix linux-6.1.y OK (0) job log log
2025/01/24 04:14 1h42m bisect fix linux-6.1.y OK (0) job log log

Sample crash report:
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (1 ticks this GP) idle=08bc/1/0x4000000000000000 softirq=10498/10498 fqs=0
	(detected by 0, t=10506 jiffies, g=10681, q=13 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4426 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:instrument_atomic_read include/linux/instrumented.h:72 [inline]
RIP: 0010:_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
RIP: 0010:cpumask_test_cpu include/linux/cpumask.h:444 [inline]
RIP: 0010:cpu_online include/linux/cpumask.h:1030 [inline]
RIP: 0010:trace_lock_acquire include/trace/events/lock.h:24 [inline]
RIP: 0010:lock_acquire+0xca/0x4a0 kernel/locking/lockdep.c:5633
Code: 03 42 0f b6 04 38 84 c0 0f 85 9d 02 00 00 44 3b 35 6b eb bb 0c 0f 83 a2 01 00 00 45 89 f4 41 c1 ee 06 4a 8d 3c f5 e8 29 20 8e <be> 08 00 00 00 e8 3c 44 6f 00 4c 0f a3 25 3c e9 bb 0c 73 0d e8 6d
RSP: 0018:ffffc900001e0b20 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8e2029e8
RBP: ffffc900001e0c28 R08: 0000000000000001 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed10047bba6b R12: 0000000000000001
R13: 1ffff9200003c170 R14: 0000000000000000 R15: dffffc0000000000
FS:  000055558fd74500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000012c0 CR3: 000000007c997000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xb0/0x100 kernel/locking/spinlock.c:162
 debug_object_deactivate+0x62/0x390 lib/debugobjects.c:753
 debug_hrtimer_deactivate kernel/time/hrtimer.c:453 [inline]
 __run_hrtimer kernel/time/hrtimer.c:1719 [inline]
 __hrtimer_run_queues+0x2d5/0xd50 kernel/time/hrtimer.c:1815
 hrtimer_interrupt+0x3c5/0x9c0 kernel/time/hrtimer.c:1877
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1107 [inline]
 __sysvec_apic_timer_interrupt+0x153/0x5a0 arch/x86/kernel/apic/apic.c:1124
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0x9b/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:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xbc/0x120 kernel/locking/spinlock.c:194
Code: c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f7 44 24 20 00 02 00 00 41 c6 04 07 f8 75 4b f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> af 7f 1f f7 65 8b 05 80 ff c8 75 85 c0 74 3c 48 c7 04 24 0e 36
RSP: 0018:ffffc90003456d00 EFLAGS: 00000206
RAX: dffffc0000000004 RBX: 0000000000000a06 RCX: 038d18f477788d00
RDX: dffffc0000000000 RSI: ffffffff8a8c1aa0 RDI: 0000000000000001
RBP: ffffc90003456d90 R08: ffffffff90aff32f R09: 1ffffffff215fe65
R10: dffffc0000000000 R11: fffffbfff215fe66 R12: dffffc0000000000
R13: 0000000000000a06 R14: ffff888023ddd2e8 R15: 1ffff9200068ada0
 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
 taprio_change+0x4474/0x5490 net/sched/sch_taprio.c:1695
 qdisc_create+0x7eb/0x10b0 net/sched/sch_api.c:1305
 tc_modify_qdisc+0xb5f/0x1d10 net/sched/sch_api.c:-1
 rtnetlink_rcv_msg+0x87c/0xfc0 net/core/rtnetlink.c:6158
 netlink_rcv_skb+0x1fb/0x450 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+0x8ad/0xbd0 net/netlink/af_netlink.c:1872
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg net/socket.c:730 [inline]
 ____sys_sendmsg+0x5be/0x970 net/socket.c:2518
 ___sys_sendmsg+0x2a2/0x360 net/socket.c:2572
 __sys_sendmsg net/socket.c:2601 [inline]
 __do_sys_sendmsg net/socket.c:2610 [inline]
 __se_sys_sendmsg+0x1bb/0x2a0 net/socket.c:2608
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fd03699ce59
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:00007ffdd5987228 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fd036c15fa0 RCX: 00007fd03699ce59
RDX: 0000000000000010 RSI: 00002000000012c0 RDI: 0000000000000005
RBP: 00007fd036a32d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd036c15fac R14: 00007fd036c15fa0 R15: 00007fd036c15fa0
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10505 jiffies! g10681 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=3013
rcu: rcu_preempt kthread starved for 10506 jiffies! g10681 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:I stack:27760 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5245 [inline]
 __schedule+0x11d1/0x40e0 kernel/sched/core.c:6562
 schedule+0xb9/0x180 kernel/sched/core.c:6638
 schedule_timeout+0x184/0x2d0 kernel/time/timer.c:2168
 rcu_gp_fqs_loop+0x303/0x1340 kernel/rcu/tree.c:1706
 rcu_gp_kthread+0x99/0x3b0 kernel/rcu/tree.c:1905
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4426 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:__this_cpu_preempt_check+0x0/0x10 lib/smp_processor_id.c:65
Code: 48 89 da e8 b2 b1 f4 ff 48 8b 74 24 30 48 c7 c7 e0 20 df 8a e8 a1 b1 f4 ff e8 ba 8b ff ff eb a8 e8 35 ea ff ff 0f 1f 44 00 00 <48> 89 fe 48 c7 c7 60 20 df 8a e9 e1 fe ff ff 00 eb 1e 0f 1f 00 48
RSP: 0018:ffffc900001e0c60 EFLAGS: 00000046
RAX: 0000000000000001 RBX: ffff88807c360000 RCX: 0000000000000001
RDX: ffff88807c360000 RSI: ffff888023ddd300 RDI: ffffffff8a8c2c20
RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff5200003c184 R12: 0000000000000002
R13: 0000000000000046 R14: ffff888023ddd300 R15: ffff88807c360b30
FS:  000055558fd74500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000012c0 CR3: 000000007c997000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 lockdep_recursion_finish kernel/locking/lockdep.c:467 [inline]
 lock_is_held_type+0x100/0x190 kernel/locking/lockdep.c:5706
 lock_is_held include/linux/lockdep.h:283 [inline]
 advance_sched+0x13b/0x950 net/sched/sch_taprio.c:710
 __run_hrtimer kernel/time/hrtimer.c:1751 [inline]
 __hrtimer_run_queues+0x54a/0xd50 kernel/time/hrtimer.c:1815
 hrtimer_interrupt+0x3c5/0x9c0 kernel/time/hrtimer.c:1877
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1107 [inline]
 __sysvec_apic_timer_interrupt+0x153/0x5a0 arch/x86/kernel/apic/apic.c:1124
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0x9b/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:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xbc/0x120 kernel/locking/spinlock.c:194
Code: c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f7 44 24 20 00 02 00 00 41 c6 04 07 f8 75 4b f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> af 7f 1f f7 65 8b 05 80 ff c8 75 85 c0 74 3c 48 c7 04 24 0e 36
RSP: 0018:ffffc90003456d00 EFLAGS: 00000206
RAX: dffffc0000000004 RBX: 0000000000000a06 RCX: 038d18f477788d00
RDX: dffffc0000000000 RSI: ffffffff8a8c1aa0 RDI: 0000000000000001
RBP: ffffc90003456d90 R08: ffffffff90aff32f R09: 1ffffffff215fe65
R10: dffffc0000000000 R11: fffffbfff215fe66 R12: dffffc0000000000
R13: 0000000000000a06 R14: ffff888023ddd2e8 R15: 1ffff9200068ada0
 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
 taprio_change+0x4474/0x5490 net/sched/sch_taprio.c:1695
 qdisc_create+0x7eb/0x10b0 net/sched/sch_api.c:1305
 tc_modify_qdisc+0xb5f/0x1d10 net/sched/sch_api.c:-1
 rtnetlink_rcv_msg+0x87c/0xfc0 net/core/rtnetlink.c:6158
 netlink_rcv_skb+0x1fb/0x450 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+0x8ad/0xbd0 net/netlink/af_netlink.c:1872
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg net/socket.c:730 [inline]
 ____sys_sendmsg+0x5be/0x970 net/socket.c:2518
 ___sys_sendmsg+0x2a2/0x360 net/socket.c:2572
 __sys_sendmsg net/socket.c:2601 [inline]
 __do_sys_sendmsg net/socket.c:2610 [inline]
 __se_sys_sendmsg+0x1bb/0x2a0 net/socket.c:2608
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fd03699ce59
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:00007ffdd5987228 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fd036c15fa0 RCX: 00007fd03699ce59
RDX: 0000000000000010 RSI: 00002000000012c0 RDI: 0000000000000005
RBP: 00007fd036a32d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd036c15fac R14: 00007fd036c15fa0 R15: 00007fd036c15fa0
 </TASK>

Crashes (27):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/06/14 13:18 linux-6.1.y 228da13e907e 1d2f3589 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in tc_modify_qdisc
2026/01/09 22:41 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in tc_modify_qdisc
2025/11/03 11:30 linux-6.1.y f6e38ae624cf 2c50b6a9 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in tc_modify_qdisc
2025/10/03 13:28 linux-6.1.y 882efbdd9d34 49379ee0 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in tc_modify_qdisc
2025/05/30 18:45 linux-6.1.y da3c5173c55f 3d2f584d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in tc_modify_qdisc
2024/12/14 12:35 linux-6.1.y e4d90d63d385 7cbfbb3a .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in tc_modify_qdisc
2025/06/04 09:48 linux-6.1.y da3c5173c55f a30356b7 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in tc_modify_qdisc
2025/05/30 14:24 linux-6.1.y da3c5173c55f 3d2f584d .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in tc_modify_qdisc
2026/06/18 07:11 linux-6.1.y 228da13e907e b62b3ded .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in tc_modify_qdisc
2026/06/18 07:09 linux-6.1.y 228da13e907e b62b3ded .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in tc_modify_qdisc
2026/06/15 09:25 linux-6.1.y 228da13e907e 1d2f3589 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in tc_modify_qdisc
2026/06/15 09:20 linux-6.1.y 228da13e907e 1d2f3589 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in tc_modify_qdisc
2026/06/14 10:39 linux-6.1.y 228da13e907e 1d2f3589 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in tc_modify_qdisc
2026/06/14 10:38 linux-6.1.y 228da13e907e 1d2f3589 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in tc_modify_qdisc
2025/12/07 16:31 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in tc_modify_qdisc
2025/12/07 16:29 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in tc_modify_qdisc
2025/12/05 09:44 linux-6.1.y f6e38ae624cf d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in tc_modify_qdisc
2025/10/09 08:08 linux-6.1.y 882efbdd9d34 7e2882b3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in tc_modify_qdisc
2025/10/03 12:04 linux-6.1.y 882efbdd9d34 49379ee0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in tc_modify_qdisc
2025/10/03 11:01 linux-6.1.y 882efbdd9d34 49379ee0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in tc_modify_qdisc
2025/08/02 16:40 linux-6.1.y 3594f306da12 7368264b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in tc_modify_qdisc
2025/08/02 16:37 linux-6.1.y 3594f306da12 7368264b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in tc_modify_qdisc
2025/08/02 08:08 linux-6.1.y 3594f306da12 7368264b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in tc_modify_qdisc
2025/08/02 08:06 linux-6.1.y 3594f306da12 7368264b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in tc_modify_qdisc
2024/11/08 00:03 linux-6.1.y 7c15117f9468 867e44df .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in tc_modify_qdisc
2025/12/21 20:05 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: soft lockup in tc_modify_qdisc
2025/07/11 12:21 linux-6.1.y dfc486ec9cce 3cda49cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: soft lockup in tc_modify_qdisc
* Struck through repros no longer work on HEAD.