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INFO: rcu detected stall in exit_to_user_mode_loop

Status: upstream: reported C repro on 2025/06/21 15:44
Subsystems: mm
Labels: prio:low
[Documentation on labels]
Reported-by: syzbot+2642f347f7309b4880dc@syzkaller.appspotmail.com
First crash: 373d, last: 5h28m
Cause bisection: failed (error log, bisect log)
  
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ID Workflow Result Correct Bug Created Started Finished Revision Error
a35b7bbf-95e5-43c4-822a-4b0fbc096480 assessment-security DenialOfService: ✅ Exploitable: ❌ FilesystemTrigger: ❌ NetworkTrigger: ❌ PeripheralTrigger: ❌ RemoteTrigger: ❌ Unprivileged: ❌ UserNamespace: ❌ VMGuestTrigger: ❌ VMHostTrigger: ❌ ❓ INFO: rcu detected stall in exit_to_user_mode_loop 2026/05/23 11:37 2026/05/23 11:37 2026/05/23 12:27 c69befb30ac10e158cc9d1557b508ee3f0eca1de
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Title Replies (including bot) Last reply
[syzbot] [mm?] INFO: rcu detected stall in exit_to_user_mode_loop 1 (5) 2025/07/29 04:47
▶ ▼ Last patch testing requests (1)
Created Duration User Patch Repo Result
2025/07/29 01:07 2h29m hdanton@sina.com patch upstream OK log

Sample crash report:
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 0, t=10502 jiffies, g=17901, q=557 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294966302-4294955799), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10504 jiffies! g17901 f0x2 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:27968 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5388 [inline]
 __schedule+0x1821/0x5740 kernel/sched/core.c:7189
 __schedule_loop kernel/sched/core.c:7268 [inline]
 schedule+0x164/0x360 kernel/sched/core.c:7283
 schedule_timeout+0x158/0x2c0 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x312/0x11d0 kernel/rcu/tree.c:2095
 rcu_gp_kthread+0x9e/0x2b0 kernel/rcu/tree.c:2297
 kthread+0x389/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </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 UID: 0 PID: 6106 Comm: syz.4.21 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:asm_sysvec_apic_timer_interrupt+0x0/0x20 arch/x86/include/asm/idtentry.h:697
Code: 36 2a a7 0a e9 81 06 00 00 90 f3 0f 1e fa 0f 01 ca fc 6a ff e8 31 05 00 00 48 89 c4 48 89 e7 e8 46 29 a7 0a e9 61 06 00 00 90 <f3> 0f 1e fa 0f 01 ca fc 6a ff e8 11 05 00 00 48 89 c4 48 89 e7 e8
RSP: 0018:ffffc900024ef848 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000046
RDX: 0000000000000000 RSI: ffffffff8e215e66 RDI: ffffffff8c28b6e0
RBP: 0000000000000097 R08: ffffc900024ef9cf R09: ffffc900024ef9b0
R10: dffffc0000000000 R11: fffff5200049df3a R12: dffffc0000000000
R13: dffffc0000000000 R14: ffffffff8bc69c20 R15: 0000000000000000
FS:  00007fd23aca16c0(0000) GS:ffff88812539e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000058 CR3: 00000000122bd000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
RIP: 0010:__might_resched+0x39/0x4d0 kernel/sched/core.c:9125
Code: 83 ec 20 89 d3 89 74 24 04 48 89 7c 24 08 e8 3e e7 11 0a 85 c0 74 46 48 c7 c7 00 cd 95 8e be ff ff ff ff e8 e9 e3 11 0a 85 c0 <74> 31 e8 20 e7 11 0a 85 c0 74 28 80 3d be ae 84 0e 00 75 1f c6 05
RSP: 0018:ffffc900024ef870 EFLAGS: 00000246
 __might_fault+0x76/0x130 mm/memory.c:7338
 __copy_to_user include/linux/uaccess.h:151 [inline]
 save_xstate_epilog arch/x86/kernel/fpu/signal.c:121 [inline]
 copy_fpstate_to_sigframe+0xb16/0xd60 arch/x86/kernel/fpu/signal.c:232
 get_sigframe+0x5f7/0x820 arch/x86/kernel/signal.c:163
 x64_setup_rt_frame+0x160/0xcb0 arch/x86/kernel/signal_64.c:175
 setup_rt_frame arch/x86/kernel/signal.c:250 [inline]
 handle_signal arch/x86/kernel/signal.c:294 [inline]
 arch_do_signal_or_restart+0x442/0x840 arch/x86/kernel/signal.c:339
 __exit_to_user_mode_loop kernel/entry/common.c:64 [inline]
 exit_to_user_mode_loop+0xa9/0x680 kernel/entry/common.c:98
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline]
 do_syscall_64+0x353/0x580 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd239d9ce57
Code: 83 c8 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
RSP: 002b:00007fd23aca10e8 EFLAGS: 00000246
RAX: 00000000000000ca RBX: 00007fd23a015fa8 RCX: 00007fd239d9ce59
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fd23a015fa8
RBP: 00007fd23a015fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd23a016038 R14: 00007ffc7adffd10 R15: 00007ffc7adffdf8
 </TASK>

Crashes (534):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/05/31 00:39 upstream f5e5d3509bff 6b4a8443 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: rcu detected stall in exit_to_user_mode_loop
2026/01/19 05:37 upstream 24d479d26b25 d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: rcu detected stall in exit_to_user_mode_loop
2025/12/16 06:36 upstream 8f0b4cce4481 d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: rcu detected stall in exit_to_user_mode_loop
2025/12/10 01:02 upstream cb015814f8b6 d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: rcu detected stall in exit_to_user_mode_loop
2025/12/05 08:02 upstream 2aa680df6806 d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: rcu detected stall in exit_to_user_mode_loop
2025/07/28 21:29 net afd8c2c9e2e2 c4a95487 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2025/09/01 17:09 linux-next 7fa4d8dc380f 807a3b61 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2025/12/18 15:57 upstream ea1013c15392 d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: rcu detected stall in exit_to_user_mode_loop
2025/07/12 00:18 upstream 40f92e79b0aa 3cda49cf .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root INFO: rcu detected stall in exit_to_user_mode_loop
2025/12/24 06:17 net-next 7b8e9264f55a d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/01/15 16:26 linux-next 9b7977f9e39b d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/01/13 03:33 linux-next f417b7ffcbef d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/01/05 03:22 linux-next cc3aa43b44bd d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2025/12/25 00:13 linux-next cc3aa43b44bd d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2025/12/24 11:19 linux-next cc3aa43b44bd d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2025/12/24 09:55 linux-next cc3aa43b44bd d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: rcu detected stall in exit_to_user_mode_loop
2025/12/08 02:55 linux-next 6987d58a9cbc d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: rcu detected stall in exit_to_user_mode_loop
2025/11/29 06:54 linux-next 7d31f578f323 d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: rcu detected stall in exit_to_user_mode_loop
2025/11/24 00:24 linux-next d724c6f85e80 4fb8ef37 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: rcu detected stall in exit_to_user_mode_loop
2025/11/23 11:41 linux-next d724c6f85e80 4fb8ef37 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: rcu detected stall in exit_to_user_mode_loop
2026/06/07 02:27 upstream 8e65320d91cd cc095639 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/06/05 14:46 upstream ddd664bbff63 48b6c3fa .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/06/04 05:09 upstream ba3e43a9e601 197909be .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/31 22:34 upstream 174914ea5513 6b4a8443 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/30 07:13 upstream 9215e74f228f 6b4a8443 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/29 20:23 upstream 8fde5d1d47f6 6b4a8443 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/29 04:03 upstream 8fde5d1d47f6 4624854e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/26 22:42 upstream d60ec36cab33 2b01f00e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/26 19:41 upstream d60ec36cab33 a3e47276 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/25 14:53 upstream e7ae89a0c97c c69befb3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/22 20:04 upstream 45255ea1ca09 e16cf9f3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/20 14:52 upstream 27fa82620cba 62fb93a2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/20 02:21 upstream 27fa82620cba 0909d65f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/19 20:56 upstream ab5fce87a778 223544dc .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/18 11:53 upstream 5200f5f493f7 55156e84 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/16 11:56 upstream 6916d5703ddf a15a64a6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/14 17:51 upstream e1914add2799 6ccb967e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/13 11:47 upstream 1d5dcaa3bd65 fec2a7ee .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/11 09:03 upstream 5d6919055dec e6eb7c0b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/11 04:19 upstream aa54b1d27fe0 29233ece .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/10 22:13 upstream aa54b1d27fe0 29233ece .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/09 20:05 upstream 70390501d194 29233ece .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/09 18:31 upstream 70390501d194 29233ece .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/08 08:00 upstream 917719c412c4 5633175a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/07 08:03 upstream 5862221fdded f250db59 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/05 02:14 upstream c7e4e4d5f7dc a898ba9c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/02 03:00 upstream ef5f46b63023 753c55b9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/01 13:56 upstream 26fd6bff2c05 753c55b9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/04/30 22:22 upstream 08d0d3466664 753c55b9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: rcu detected stall in exit_to_user_mode_loop
2026/04/28 21:18 upstream dca922e019dd b4209743 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: rcu detected stall in exit_to_user_mode_loop
2026/04/27 03:21 upstream 20b64cf8705a 9c2d0995 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: rcu detected stall in exit_to_user_mode_loop
2026/04/24 03:40 upstream 2e6803928193 629ff21a .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto INFO: rcu detected stall in exit_to_user_mode_loop
2026/04/12 04:48 upstream e753c16cb3dd 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: rcu detected stall in exit_to_user_mode_loop
2025/09/19 13:03 upstream 097a6c336d00 67c37560 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: rcu detected stall in exit_to_user_mode_loop
2025/06/18 11:15 upstream 52da431bf03b ca631f70 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: rcu detected stall in exit_to_user_mode_loop
2025/06/17 15:38 upstream 9afe652958c3 417d98fa .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: rcu detected stall in exit_to_user_mode_loop
2025/06/12 11:07 upstream 2c4a1f3fe03e 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/27 08:19 upstream d60ec36cab33 2b01f00e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/24 16:15 upstream 4cbfe4502e3d c69befb3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/05 15:30 upstream a293ec25d59d 06e69a27 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 INFO: rcu detected stall in exit_to_user_mode_loop
2026/06/07 07:20 net 9772589b57e4 cc095639 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/06/06 22:44 net 9772589b57e4 cc095639 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/06/03 17:36 net f723ccaff2fb 234057e5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/06/01 14:10 net f3be0c984ecb 8d8eeb3a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/30 16:30 net 78ef59e7a645 6b4a8443 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/29 17:14 net 422b5233b607 6b4a8443 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/29 09:23 net f14fe6395a8b 4624854e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/23 21:38 net 87a1e0fe7776 c69befb3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/23 19:45 net 87a1e0fe7776 c69befb3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/23 10:13 net aae9d8a5528b c69befb3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/14 02:57 net 59afae20080a 6ccb967e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/04 18:20 net bd3a4795d574 85f1bcf2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/02 15:55 net ebb639024ebd a0d91488 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/04/28 16:16 net f9c52a6ba978 b4209743 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/05/28 18:31 net-next 0cf905cb9a12 9a5a7e5e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/04/11 21:19 linux-next cc13002a9f98 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce INFO: rcu detected stall in exit_to_user_mode_loop
2026/03/22 10:43 linux-next 785f0eb2f85d 5b92003d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: rcu detected stall in exit_to_user_mode_loop
2026/02/01 08:22 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 0a06917432a7 6b8752f2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: rcu detected stall in exit_to_user_mode_loop
2026/02/16 01:37 bpf-next 4c51f90d45dc 1e62d198 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce BUG: soft lockup in exit_to_user_mode_loop
* Struck through repros no longer work on HEAD.