INFO: rcu detected stall in sys

Kernel	Title	Repro	Cause bisect	Count	Last	Reported	Patched	Status
linux-5.15	INFO: rcu detected stall in sys_mkdir			1	32d	32d	0/3	upstream: reported on 2024/12/27 10:37
upstream	INFO: rcu detected stall in sys_mkdir (3) cgroups			1	1847d	1847d	0/28	closed as invalid on 2020/01/08 05:33
upstream	INFO: rcu detected stall in sys_mkdir (7) ext4			1	522d	522d	0/28	auto-obsoleted due to no activity on 2023/10/24 07:40
upstream	INFO: rcu detected stall in sys_mkdir mm			2	2016d	2017d	0/28	auto-closed as invalid on 2019/10/25 14:21
upstream	INFO: rcu detected stall in sys_mkdir (2) cgroups			5	1882d	1884d	0/28	closed as invalid on 2019/12/04 14:04
upstream	INFO: rcu detected stall in sys_mkdir (6) ext4			2	1094d	1103d	0/28	closed as invalid on 2022/02/08 09:50
upstream	INFO: rcu detected stall in sys_mkdir (4) kernel			2	1847d	1847d	0/28	closed as invalid on 2020/01/09 08:13
upstream	INFO: rcu detected stall in sys_mkdir (9) ext4	syz	done	1	7d22h	3d22h	0/28	upstream: reported syz repro on 2025/01/25 04:35
upstream	INFO: rcu detected stall in sys_mkdir (8) fs			1	121d	121d	0/28	auto-obsoleted due to no activity on 2024/12/28 09:04
android-5-15	BUG: soft lockup in sys_mkdir			2	256d	261d	0/2	auto-obsoleted due to no activity on 2024/08/15 15:43

rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 1-....: (1 GPs behind) idle=24f/1/0x4000000000000000 softirq=76493/76494 fqs=5241 (detected by 0, t=10502 jiffies, g=130157, q=580) Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 7044 Comm: syz-executor.0 Not tainted 5.14.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:native_apic_mem_read+0x36/0x40 arch/x86/include/asm/apic.h:115 Code: fb 48 8d bb 00 c0 5f ff 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 08 8b 83 00 c0 5f ff <5b> c3 e8 d3 b3 8a 00 eb f1 90 b8 01 00 00 00 c3 66 2e 0f 1f 84 00 RSP: 0018:ffffc90000dc0ac8 EFLAGS: 00000046 RAX: 00000000000400f6 RBX: 0000000000000300 RCX: ffffffff812a18b3 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffffff5fc300 RBP: fffffbfff1666d48 R08: 0000000000000000 R09: ffffffff8d6e6a07 R10: fffffbfff1adcd40 R11: 0000000000000000 R12: dffffc0000000000 R13: ffff8880b9d32870 R14: 0000000000000000 R15: ffffe8ffffd69c80 FS: 00007f8c29531700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8c29510718 CR3: 0000000053866000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> apic_read arch/x86/include/asm/apic.h:389 [inline] native_apic_wait_icr_idle+0x47/0x70 arch/x86/kernel/apic/apic.c:252 __irq_work_queue_local kernel/irq_work.c:59 [inline] __irq_work_queue_local+0x133/0x190 kernel/irq_work.c:53 irq_work_queue_on+0x146/0x160 kernel/irq_work.c:109 rcu_read_unlock_special kernel/rcu/tree_plugin.h:663 [inline] __rcu_read_unlock+0x436/0x570 kernel/rcu/tree_plugin.h:422 rcu_read_unlock include/linux/rcupdate.h:719 [inline] BPF_PROG_RUN_ARRAY include/linux/bpf.h:1269 [inline] trace_call_bpf+0x2f9/0x640 kernel/trace/bpf_trace.c:127 perf_trace_run_bpf_submit+0x91/0x210 kernel/events/core.c:9652 perf_trace_preemptirq_template+0x296/0x460 include/trace/events/preemptirq.h:14 trace_irq_enable_rcuidle include/trace/events/preemptirq.h:40 [inline] trace_irq_enable_rcuidle include/trace/events/preemptirq.h:40 [inline] trace_hardirqs_on+0x156/0x1c0 kernel/trace/trace_preemptirq.c:44 asm_sysvec_irq_work+0x12/0x20 arch/x86/include/asm/idtentry.h:664 RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:__rcu_read_unlock+0xc4/0x570 kernel/rcu/tree_plugin.h:425 Code: b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e b6 01 00 00 8b 85 d8 03 00 00 85 c0 75 54 <65> 48 8b 1c 25 40 f0 01 00 48 8d bb d4 03 00 00 48 b8 00 00 00 00 RSP: 0018:ffffc90000dc0e48 EFLAGS: 00000206 RAX: 0000000000000002 RBX: ffff8880b9d32840 RCX: 1ffffffff1fa75a2 RDX: 0000000000000000 RSI: 0000000000000100 RDI: 0000000000000000 RBP: ffffffff8b988ac0 R08: 0000000000000001 R09: ffffffff8fd0097f R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000001 R13: 00000000000b5a00 R14: 0000000000000200 R15: fffffbfff16c1e30 rcu_read_unlock include/linux/rcupdate.h:719 [inline] rebalance_domains+0x278/0xda0 kernel/sched/fair.c:10256 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:636 irq_exit_rcu+0x5/0x20 kernel/softirq.c:648 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097 </IRQ> asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:163 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:197 Code: 01 f0 4d 89 03 e9 63 fd ff ff b9 ff ff ff ff ba 08 00 00 00 4d 8b 03 48 0f bd ca 49 8b 45 00 48 63 c9 e9 64 ff ff ff 0f 1f 00 <65> 8b 05 e9 ce 8b 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b RSP: 0018:ffffc9000184f900 EFLAGS: 00000287 RAX: 0000000000000000 RBX: 000000000000000a RCX: ffff88801d275580 RDX: 0000000000000000 RSI: ffff88801d275580 RDI: 0000000000000003 RBP: ffff888018cd9980 R08: 0000000000000000 R09: 000000000000000a R10: ffffffff83a25a4a R11: 0000000000000010 R12: 0000000000000030 R13: 00000000000003de R14: dffffc0000000000 R15: 0000000000000000 tomoyo_domain_quota_is_ok+0x2f1/0x550 security/tomoyo/util.c:1093 tomoyo_supervisor+0x2f2/0xf00 security/tomoyo/common.c:2089 tomoyo_audit_path_number_log security/tomoyo/file.c:235 [inline] tomoyo_path_number_perm+0x419/0x590 security/tomoyo/file.c:734 tomoyo_path_mkdir+0x98/0xe0 security/tomoyo/tomoyo.c:166 security_path_mkdir+0xe8/0x160 security/security.c:1140 do_mkdirat+0x143/0x300 fs/namei.c:3907 __do_sys_mkdir fs/namei.c:3931 [inline] __se_sys_mkdir fs/namei.c:3929 [inline] __x64_sys_mkdir+0xf2/0x140 fs/namei.c:3929 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f8c2bfba739 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f8c29531188 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007f8c2c0bef80 RCX: 00007f8c2bfba739 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000240 RBP: 00007f8c2c014cc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8c2c0bef80 R13: 00007ffef6c39c9f R14: 00007f8c29531300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: fb sti 1: 48 8d bb 00 c0 5f ff lea -0xa04000(%rbx),%rdi 8: 48 89 fa mov %rdi,%rdx b: 48 c1 ea 03 shr $0x3,%rdx f: 0f b6 14 02 movzbl (%rdx,%rax,1),%edx 13: 48 89 f8 mov %rdi,%rax 16: 83 e0 07 and $0x7,%eax 19: 83 c0 03 add $0x3,%eax 1c: 38 d0 cmp %dl,%al 1e: 7c 04 jl 0x24 20: 84 d2 test %dl,%dl 22: 75 08 jne 0x2c 24: 8b 83 00 c0 5f ff mov -0xa04000(%rbx),%eax * 2a: 5b pop %rbx <-- trapping instruction 2b: c3 retq 2c: e8 d3 b3 8a 00 callq 0x8ab404 31: eb f1 jmp 0x24 33: 90 nop 34: b8 01 00 00 00 mov $0x1,%eax 39: c3 retq 3a: 66 data16 3b: 2e cs 3c: 0f .byte 0xf 3d: 1f (bad) 3e: 84 00 test %al,(%rax)