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INFO: rcu detected stall in lo_ioctl (6)

Status: auto-obsoleted due to no activity on 2025/05/14 17:06
Subsystems: block
[Documentation on labels]
First crash: 211d, last: 142d
▶ ▼ Similar bugs (7)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: rcu detected stall in lo_ioctl (4) block 2 701d 757d 0/29 auto-obsoleted due to no activity on 2023/11/02 10:53
linux-5.15 INFO: rcu detected stall in lo_ioctl 1 396d 396d 0/3 auto-obsoleted due to no activity on 2024/09/11 22:21
upstream INFO: rcu detected stall in lo_ioctl (2) kernel 2 2041d 2041d 0/29 closed as invalid on 2019/12/04 14:04
upstream INFO: rcu detected stall in lo_ioctl (3) kernfs 2 1285d 1289d 0/29 closed as invalid on 2022/02/08 10:00
upstream INFO: rcu detected stall in lo_ioctl block 193 2557d 2756d 0/29 closed as dup on 2018/05/04 17:09
upstream INFO: rcu detected stall in lo_ioctl (5) block 7 339d 428d 0/29 auto-obsoleted due to no activity on 2024/10/29 01:08
android-5-15 BUG: soft lockup in lo_ioctl 2 411d 433d 0/2 auto-obsoleted due to no activity on 2024/08/18 12:53

Sample crash report:
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (1 GPs behind) idle=ebcc/1/0x4000000000000000 softirq=116443/116444 fqs=61
rcu: 	(detected by 1, t=10502 jiffies, g=118385, q=183 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 17709 Comm: syz.5.2061 Not tainted 6.14.0-rc2-syzkaller-00041-g4dc1d1bec898 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:__lock_acquire+0x13ed/0x2100 kernel/locking/lockdep.c:5235
Code: 40 02 10 75 55 48 8b 44 24 58 80 3c 10 00 48 8b 5c 24 28 74 12 48 89 df e8 00 26 8b 00 48 ba 00 00 00 00 00 fc ff df 48 89 2b <48> 8b 44 24 30 0f b6 04 10 84 c0 0f 85 fd 09 00 00 48 8b 0c 24 8b
RSP: 0018:ffffc90000007930 EFLAGS: 00000046
RAX: 1ffff110055f9c9c RBX: ffff88802afce4e0 RCX: b7751c5647481100
RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffffffff942fb840
RBP: 97064f26aa3bd169 R08: ffffffff942fb847 R09: 1ffffffff285f708
R10: dffffc0000000000 R11: fffffbfff285f709 R12: ffff88802afcda00
R13: ffff88802afcda00 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f353f5066c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3534000000 CR3: 000000004b800000 CR4: 0000000000350ef0
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
 debug_object_deactivate+0x158/0x390 lib/debugobjects.c:873
 debug_hrtimer_deactivate kernel/time/hrtimer.c:460 [inline]
 debug_deactivate+0x1b/0x220 kernel/time/hrtimer.c:502
 __run_hrtimer kernel/time/hrtimer.c:1769 [inline]
 __hrtimer_run_queues+0x305/0xd30 kernel/time/hrtimer.c:1865
 hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1927
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x112/0x420 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 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:console_flush_all+0x996/0xeb0
Code: 48 21 c3 0f 85 16 02 00 00 e8 b6 8e 20 00 4c 8b 7c 24 10 4d 85 f6 75 07 e8 a7 8e 20 00 eb 06 e8 a0 8e 20 00 fb 48 8b 5c 24 18 <48> 8b 44 24 30 42 80 3c 28 00 74 08 48 89 df e8 a6 27 87 00 4c 8b
RSP: 0018:ffffc90003556ae0 EFLAGS: 00000287
RAX: ffffffff819ec100 RBX: ffffffff8f184dd8 RCX: 0000000000080000
RDX: ffffc90015129000 RSI: 000000000000603e RDI: 000000000000603f
RBP: ffffc90003556c90 R08: ffffffff819ec0d7 R09: 1ffffffff285f708
R10: dffffc0000000000 R11: fffffbfff285f709 R12: ffffffff8f184d80
R13: dffffc0000000000 R14: 0000000000000200 R15: ffffc90003556ce0
 __console_flush_and_unlock kernel/printk/printk.c:3269 [inline]
 console_unlock+0x14f/0x3b0 kernel/printk/printk.c:3309
 vprintk_emit+0x730/0xa10 kernel/printk/printk.c:2432
 _printk+0xd5/0x120 kernel/printk/printk.c:2457
 set_capacity_and_notify+0x211/0x2d0 block/genhd.c:93
 loop_set_size+0x44/0xb0 drivers/block/loop.c:234
 loop_configure+0xa82/0xf20 drivers/block/loop.c:1106
 lo_ioctl+0x86f/0x2600
 blkdev_ioctl+0x57f/0x6a0 block/ioctl.c:693
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:906 [inline]
 __se_sys_ioctl+0xf7/0x170 fs/ioctl.c:892
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f353e78c9eb
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007f353f505dc0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000000000a RCX: 00007f353e78c9eb
RDX: 0000000000000009 RSI: 0000000000004c00 RDI: 000000000000000a
RBP: 0000000000000000 R08: 0000000000000000 R09: 00000000000001c6
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000009
R13: 00007f353f505ef0 R14: 00007f353f505eb0 R15: 00007f3534000000
 </TASK>
rcu: rcu_preempt kthread starved for 10195 jiffies! g118385 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:R  running task     stack:25136 pid:17    tgid:17    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5377 [inline]
 __schedule+0x190e/0x4c90 kernel/sched/core.c:6764
 __schedule_loop kernel/sched/core.c:6841 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6856
 schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2024
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2226
 kthread+0x7ab/0x920 kernel/kthread.c:464
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 UID: 0 PID: 12297 Comm: syz-executor Not tainted 6.14.0-rc2-syzkaller-00041-g4dc1d1bec898 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline]
RIP: 0010:smp_call_function_many_cond+0x1bae/0x2d30 kernel/smp.c:885
Code: 89 e6 83 e6 01 31 ff e8 b0 e8 0b 00 41 83 e4 01 4c 8b 64 24 68 75 07 e8 60 e4 0b 00 eb 41 f3 90 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 03 84 c0 75 11 41 f7 45 00 01 00 00 00 74 1e e8 3b e4 0b
RSP: 0000:ffffc900036a7460 EFLAGS: 00000293
RAX: dffffc0000000000 RBX: 1ffff110170c8c99 RCX: ffff888046ef1e00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900036a7660 R08: ffffffff81b36b30 R09: 1ffffffff285f708
R10: dffffc0000000000 R11: fffffbfff285f709 R12: ffff8880b873fb48
R13: ffff8880b86464c8 R14: ffff8880b873fb40 R15: 0000000000000000
FS:  000055557ea57500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055557ea725c8 CR3: 000000002c07e000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1052
 __flush_tlb_multi arch/x86/include/asm/paravirt.h:91 [inline]
 flush_tlb_multi arch/x86/mm/tlb.c:966 [inline]
 flush_tlb_mm_range+0x42d/0x710 arch/x86/mm/tlb.c:1054
 flush_tlb_page arch/x86/include/asm/tlbflush.h:255 [inline]
 ptep_clear_flush+0x11a/0x170 mm/pgtable-generic.c:101
 wp_page_copy mm/memory.c:3501 [inline]
 do_wp_page+0x1c64/0x49b0 mm/memory.c:3827
 handle_pte_fault mm/memory.c:5905 [inline]
 __handle_mm_fault+0x24d5/0x70f0 mm/memory.c:6032
 handle_mm_fault+0x3e5/0x8d0 mm/memory.c:6201
 do_user_addr_fault arch/x86/mm/fault.c:1337 [inline]
 handle_page_fault arch/x86/mm/fault.c:1480 [inline]
 exc_page_fault+0x459/0x8b0 arch/x86/mm/fault.c:1538
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f353e74b23f
Code: 8d 34 19 48 39 d5 48 89 75 60 0f 95 c2 48 29 d8 48 83 c1 10 0f b6 d2 48 83 c8 01 48 c1 e2 02 48 09 da 48 83 ca 01 48 89 51 f8 <48> 89 46 08 eb 80 48 8d 0d 01 c0 0e 00 48 8d 15 05 d2 0e 00 bf 01
RSP: 002b:00007ffdfb483cd0 EFLAGS: 00010206
RAX: 0000000000018a41 RBX: 0000000000008040 RCX: 000055557ea6a590
RDX: 0000000000008041 RSI: 000055557ea725c0 RDI: 0000000000000004
RBP: 00007f353e97cca0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000001000 R11: 0000000000000802 R12: 0000000000008030
R13: 0000000000000076 R14: 00007f353e97cd00 R15: 0000000000000000
 </TASK>
watchdog: BUG: soft lockup - CPU#1 stuck for 225s! [syz-executor:12297]
Modules linked in:
irq event stamp: 2671220
hardirqs last  enabled at (2671219): [<ffffffff8bf5e8e3>] irqentry_exit+0x63/0x90 kernel/entry/common.c:357
hardirqs last disabled at (2671220): [<ffffffff8bf5c4ee>] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1049
softirqs last  enabled at (2671212): [<ffffffff8181b547>] __do_softirq kernel/softirq.c:595 [inline]
softirqs last  enabled at (2671212): [<ffffffff8181b547>] invoke_softirq kernel/softirq.c:435 [inline]
softirqs last  enabled at (2671212): [<ffffffff8181b547>] __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662
softirqs last disabled at (2671203): [<ffffffff8181b547>] __do_softirq kernel/softirq.c:595 [inline]
softirqs last disabled at (2671203): [<ffffffff8181b547>] invoke_softirq kernel/softirq.c:435 [inline]
softirqs last disabled at (2671203): [<ffffffff8181b547>] __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662
CPU: 1 UID: 0 PID: 12297 Comm: syz-executor Not tainted 6.14.0-rc2-syzkaller-00041-g4dc1d1bec898 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline]
RIP: 0010:smp_call_function_many_cond+0x1bae/0x2d30 kernel/smp.c:885
Code: 89 e6 83 e6 01 31 ff e8 b0 e8 0b 00 41 83 e4 01 4c 8b 64 24 68 75 07 e8 60 e4 0b 00 eb 41 f3 90 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 03 84 c0 75 11 41 f7 45 00 01 00 00 00 74 1e e8 3b e4 0b
RSP: 0000:ffffc900036a7460 EFLAGS: 00000293
RAX: dffffc0000000000 RBX: 1ffff110170c8c99 RCX: ffff888046ef1e00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900036a7660 R08: ffffffff81b36b30 R09: 1ffffffff285f708
R10: dffffc0000000000 R11: fffffbfff285f709 R12: ffff8880b873fb48
R13: ffff8880b86464c8 R14: ffff8880b873fb40 R15: 0000000000000000
FS:  000055557ea57500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055557ea725c8 CR3: 000000002c07e000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1052
 __flush_tlb_multi arch/x86/include/asm/paravirt.h:91 [inline]
 flush_tlb_multi arch/x86/mm/tlb.c:966 [inline]
 flush_tlb_mm_range+0x42d/0x710 arch/x86/mm/tlb.c:1054
 flush_tlb_page arch/x86/include/asm/tlbflush.h:255 [inline]
 ptep_clear_flush+0x11a/0x170 mm/pgtable-generic.c:101
 wp_page_copy mm/memory.c:3501 [inline]
 do_wp_page+0x1c64/0x49b0 mm/memory.c:3827
 handle_pte_fault mm/memory.c:5905 [inline]
 __handle_mm_fault+0x24d5/0x70f0 mm/memory.c:6032
 handle_mm_fault+0x3e5/0x8d0 mm/memory.c:6201
 do_user_addr_fault arch/x86/mm/fault.c:1337 [inline]
 handle_page_fault arch/x86/mm/fault.c:1480 [inline]
 exc_page_fault+0x459/0x8b0 arch/x86/mm/fault.c:1538
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f353e74b23f
Code: 8d 34 19 48 39 d5 48 89 75 60 0f 95 c2 48 29 d8 48 83 c1 10 0f b6 d2 48 83 c8 01 48 c1 e2 02 48 09 da 48 83 ca 01 48 89 51 f8 <48> 89 46 08 eb 80 48 8d 0d 01 c0 0e 00 48 8d 15 05 d2 0e 00 bf 01
RSP: 002b:00007ffdfb483cd0 EFLAGS: 00010206
RAX: 0000000000018a41 RBX: 0000000000008040 RCX: 000055557ea6a590
RDX: 0000000000008041 RSI: 000055557ea725c0 RDI: 0000000000000004
RBP: 00007f353e97cca0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000001000 R11: 0000000000000802 R12: 0000000000008030
R13: 0000000000000076 R14: 00007f353e97cd00 R15: 0000000000000000
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 17709 Comm: syz.5.2061 Not tainted 6.14.0-rc2-syzkaller-00041-g4dc1d1bec898 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:advance_sched+0x52d/0xca0 net/sched/sch_taprio.c:961
Code: 89 84 24 90 00 00 00 45 31 ff 49 bc 00 00 00 00 00 fc ff df 4c 89 74 24 28 bf 10 00 00 00 4c 89 fe e8 97 28 c8 f7 49 83 ff 0f <48> 89 6c 24 40 0f 87 fb 00 00 00 4c 8d ad 40 ff ff ff 4c 89 ed 48
RSP: 0018:ffffc90000007c70 EFLAGS: 00000093
RAX: 0000000000010000 RBX: ffff88805d4a6d40 RCX: ffff88802afcda00
RDX: ffff88802afcda00 RSI: 0000000000000000 RDI: 0000000000000010
RBP: ffff88805d4a6cc0 R08: ffffffff89f72be9 R09: fffff52000000f7c
R10: dffffc0000000000 R11: fffff52000000f7c R12: dffffc0000000000
R13: 182fc51ee3f14636 R14: ffff88805d4a6c00 R15: 0000000000000000
FS:  00007f353f5066c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3534000000 CR3: 000000004b800000 CR4: 0000000000350ef0
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 __run_hrtimer kernel/time/hrtimer.c:1801 [inline]
 __hrtimer_run_queues+0x59d/0xd30 kernel/time/hrtimer.c:1865
 hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1927
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x112/0x420 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 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:console_flush_all+0x996/0xeb0
Code: 48 21 c3 0f 85 16 02 00 00 e8 b6 8e 20 00 4c 8b 7c 24 10 4d 85 f6 75 07 e8 a7 8e 20 00 eb 06 e8 a0 8e 20 00 fb 48 8b 5c 24 18 <48> 8b 44 24 30 42 80 3c 28 00 74 08 48 89 df e8 a6 27 87 00 4c 8b
RSP: 0018:ffffc90003556ae0 EFLAGS: 00000287
RAX: ffffffff819ec100 RBX: ffffffff8f184dd8 RCX: 0000000000080000
RDX: ffffc90015129000 RSI: 000000000000603e RDI: 000000000000603f
RBP: ffffc90003556c90 R08: ffffffff819ec0d7 R09: 1ffffffff285f708
R10: dffffc0000000000 R11: fffffbfff285f709 R12: ffffffff8f184d80
R13: dffffc0000000000 R14: 0000000000000200 R15: ffffc90003556ce0
 __console_flush_and_unlock kernel/printk/printk.c:3269 [inline]
 console_unlock+0x14f/0x3b0 kernel/printk/printk.c:3309
 vprintk_emit+0x730/0xa10 kernel/printk/printk.c:2432
 _printk+0xd5/0x120 kernel/printk/printk.c:2457
 set_capacity_and_notify+0x211/0x2d0 block/genhd.c:93
 loop_set_size+0x44/0xb0 drivers/block/loop.c:234
 loop_configure+0xa82/0xf20 drivers/block/loop.c:1106
 lo_ioctl+0x86f/0x2600
 blkdev_ioctl+0x57f/0x6a0 block/ioctl.c:693
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:906 [inline]
 __se_sys_ioctl+0xf7/0x170 fs/ioctl.c:892
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f353e78c9eb
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007f353f505dc0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000000000a RCX: 00007f353e78c9eb
RDX: 0000000000000009 RSI: 0000000000004c00 RDI: 000000000000000a
RBP: 0000000000000000 R08: 0000000000000000 R09: 00000000000001c6
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000009
R13: 00007f353f505ef0 R14: 00007f353f505eb0 R15: 00007f3534000000
 </TASK>

Crashes (4):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/02/13 17:06 upstream 4dc1d1bec898 2afad16e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: rcu detected stall in lo_ioctl
2024/12/29 00:28 upstream 059dd502b263 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: rcu detected stall in lo_ioctl
2024/12/20 21:30 upstream e9b8ffafd20a 1ac6aa80 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: rcu detected stall in lo_ioctl
2024/12/06 13:22 upstream 5076001689e4 946d28f0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: rcu detected stall in lo_ioctl
* Struck through repros no longer work on HEAD.