| Title | Replies (including bot) | Last reply |
|---|---|---|
| Re: [PATCH 6.1] softirq: Add trace points for tasklet entry/exit | 3 (3) | 2025/08/21 22:05 |
| [PATCH 6.1] softirq: Add trace points for tasklet entry/exit | 1 (1) | 2025/08/21 18:40 |
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| Title | Replies (including bot) | Last reply |
|---|---|---|
| Re: [PATCH 6.1] softirq: Add trace points for tasklet entry/exit | 3 (3) | 2025/08/21 22:05 |
| [PATCH 6.1] softirq: Add trace points for tasklet entry/exit | 1 (1) | 2025/08/21 18:40 |
| Date | Name | Commit | Repro | Result |
|---|---|---|---|---|
| 2025/09/18 | linux-6.1.y (ToT) | 3db754f56897 | C | [report] INFO: rcu detected stall in smp_call_function |
| 2025/09/18 | upstream (ToT) | 86cc796e5e9b | C | Didn't crash |
| Created | Duration | User | Patch | Repo | Result |
|---|---|---|---|---|---|
| 2025/08/12 15:47 | 2h08m | sumanth.gavini@yahoo.com | patch | linux-6.1.y | OK log |
rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2676 jiffies s: 12257 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: 11110 Comm: syz.1.3143 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:cpu_max_bits_warn include/linux/cpumask.h:110 [inline]
RIP: 0010:cpumask_check include/linux/cpumask.h:117 [inline]
RIP: 0010:cpumask_test_cpu include/linux/cpumask.h:444 [inline]
RIP: 0010:cpu_online include/linux/cpumask.h:1030 [inline]
RIP: 0010:irq_work_queue_on+0x47/0x260 kernel/irq_work.c:134
Code: ff 48 c7 c0 b0 6c 1f 8e 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 a0 01 00 00 44 8b 35 d3 5d 92 0c 89 ef 44 89 f6 e8 d9 c8 f3 ff <44> 39 f5 0f 83 59 01 00 00 e8 6b c7 f3 ff 41 89 ee 89 e8 c1 e8 06
RSP: 0018:ffffc90000007308 EFLAGS: 00000046
RAX: ffffffff818d0ee7 RBX: ffff8880b8e3b9b0 RCX: 0000000000000100
RDX: ffff888078de5940 RSI: 0000000000000002 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffff8880b8e3b9b0
R10: ffffed10171c7738 R11: 1ffff110171c7736 R12: dffffc0000000000
R13: dffffc0000000000 R14: 0000000000000002 R15: 1ffff110171c773a
FS: 00007f35e4dfe6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2f063fff CR3: 0000000073280000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
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 ed 90 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:ffffc90000007ac0 EFLAGS: 00000206
RAX: 7c98a68c52952500 RBX: 1ffff92000000f60 RCX: 7c98a68c52952500
RDX: dffffc0000000000 RSI: ffffffff8a8c0580 RDI: ffffffff8adef760
RBP: ffffc90000007bc0 R08: dffffc0000000000 R09: fffffbfff215c451
R10: fffffbfff215c451 R11: 1ffffffff215c450 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_rx_napi+0x219/0x3c0 net/mac80211/rx.c:5330
ieee80211_rx include/net/mac80211.h:4846 [inline]
ieee80211_handle_queued_frames+0x105/0x1b0 net/mac80211/main.c:317
tasklet_action_common+0x298/0x400 kernel/softirq.c:826
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:bytes_is_nonzero mm/kasan/generic.c:84 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:102 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:128 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x68/0x290 mm/kasan/generic.c:189
Code: c1 eb 03 49 b8 00 00 00 00 00 fc ff df 4f 8d 0c 03 48 8d 5c 37 ff 48 c1 eb 03 4e 8d 14 3b 4d 89 d6 4d 29 ce 49 83 fe 10 7f 26 <4d> 85 f6 0f 84 39 01 00 00 48 f7 d3 4c 01 db 41 80 39 00 0f 85 c1
RSP: 0018:ffffc90003b87b60 EFLAGS: 00000283
RAX: ffff888078de5901 RBX: 1ffff1100f1bcdaf RCX: ffffffff81624f70
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888078de6d78
RBP: ffffc90003b87c30 R08: dffffc0000000000 R09: ffffed100f1bcdaf
R10: ffffed100f1bcdb0 R11: 1ffff1100f1bcdaf R12: 0000000000000000
R13: 1ffff92000770f74 R14: 0000000000000001 R15: dffffc0000000001
instrument_atomic_read include/linux/instrumented.h:72 [inline]
atomic_long_read include/linux/atomic/atomic-instrumented.h:1265 [inline]
__mutex_trylock_common+0x80/0x250 kernel/locking/mutex.c:107
__mutex_trylock kernel/locking/mutex.c:152 [inline]
__mutex_lock_common kernel/locking/mutex.c:606 [inline]
__mutex_lock+0x13b/0xaf0 kernel/locking/mutex.c:747
__do_sys_perf_event_open kernel/events/core.c:12796 [inline]
__se_sys_perf_event_open+0x1af0/0x1e60 kernel/events/core.c:12378
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: 0033:0x7f35e578f749
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:00007f35e4dfe038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f35e59e5fa0 RCX: 00007f35e578f749
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000480
RBP: 00007f35e5813f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f35e59e6038 R14: 00007f35e59e5fa0 R15: 00007ffe37abf138
</TASK>
| Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025/11/28 11:38 | linux-6.1.y | f6e38ae624cf | d6526ea3 | .config | console log | report | syz / log | C | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in perf_event_open | |
| 2025/11/26 08:09 | linux-6.1.y | f6e38ae624cf | 64219f15 | .config | console log | report | syz / log | C | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in perf_event_open | |
| 2025/11/22 14:20 | linux-6.1.y | f6e38ae624cf | 4fb8ef37 | .config | console log | report | syz / log | C | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in perf_event_open | |
| 2025/09/09 04:26 | linux-6.1.y | 28c695c365e1 | d291dd2d | .config | console log | report | syz / log | C | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in perf_event_open | |
| 2025/02/28 09:23 | linux-6.1.y | 3a8358583626 | 6a8fcbc4 | .config | console log | report | syz / log | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in sys_perf_event_open | ||
| 2024/11/22 03:43 | linux-6.1.y | b67dc5c9ade9 | 4b25d554 | .config | console log | report | syz / log | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in sys_perf_event_open | ||
| 2025/11/10 11:23 | linux-6.1.y | f6e38ae624cf | 4e1406b4 | .config | console log | report | syz / log | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in perf_event_open | ||
| 2025/10/18 08:51 | linux-6.1.y | c2fda4b3f577 | 1c8c8cd8 | .config | console log | report | syz / log | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in perf_event_open | ||
| 2025/10/14 22:18 | linux-6.1.y | 882efbdd9d34 | b6605ba8 | .config | console log | report | syz / log | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in perf_event_open | ||
| 2025/10/06 09:44 | linux-6.1.y | 882efbdd9d34 | 49379ee0 | .config | console log | report | syz / log | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in perf_event_open | ||
| 2025/09/27 10:08 | linux-6.1.y | 7b34dc04e4ff | 001c9061 | .config | console log | report | syz / log | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in perf_event_open | ||
| 2025/09/14 01:11 | linux-6.1.y | 3db754f56897 | e2beed91 | .config | console log | report | syz / log | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in perf_event_open | ||
| 2025/08/16 16:05 | linux-6.1.y | 0bc96de781b4 | 1804e95e | .config | console log | report | syz / log | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in perf_event_open | ||
| 2025/08/10 03:31 | linux-6.1.y | 3594f306da12 | 32a0e5ed | .config | console log | report | syz / log | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in perf_event_open | ||
| 2025/07/11 06:25 | linux-6.1.y | dfc486ec9cce | 3cda49cf | .config | console log | report | syz / log | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in perf_event_open | ||
| 2025/01/12 02:40 | linux-6.1.y | c63962be84ef | 6dbc6a9b | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in sys_perf_event_open | ||
| 2024/09/23 05:54 | linux-6.1.y | e526b12bf916 | 6f888b75 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in sys_perf_event_open | ||
| 2025/11/26 10:22 | linux-6.1.y | f6e38ae624cf | 64219f15 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in perf_event_open | ||
| 2025/11/17 14:44 | linux-6.1.y | f6e38ae624cf | ef766cd7 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in perf_event_open | ||
| 2025/11/03 02:47 | linux-6.1.y | f6e38ae624cf | 2c50b6a9 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in perf_event_open | ||
| 2025/10/26 12:06 | linux-6.1.y | 8e6e2188d949 | c0460fcd | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in perf_event_open | ||
| 2025/10/14 14:28 | linux-6.1.y | 882efbdd9d34 | b6605ba8 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in perf_event_open | ||
| 2025/10/03 15:05 | linux-6.1.y | 882efbdd9d34 | 49379ee0 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in perf_event_open | ||
| 2025/09/22 09:04 | linux-6.1.y | 363a599da6d9 | 67c37560 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in perf_event_open | ||
| 2025/09/21 00:25 | linux-6.1.y | 363a599da6d9 | 67c37560 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in perf_event_open | ||
| 2025/09/19 22:03 | linux-6.1.y | 363a599da6d9 | 67c37560 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in perf_event_open | ||
| 2025/09/02 12:41 | linux-6.1.y | f89b6e15694c | 807a3b61 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in perf_event_open | ||
| 2025/08/10 01:37 | linux-6.1.y | 3594f306da12 | 32a0e5ed | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in perf_event_open |