syzbot


INFO: task hung in synchronize_rcu (3)

Status: fixed on 2023/02/24 13:50
Reported-by: syzbot+0c6da80218456f1edc36@syzkaller.appspotmail.com
Fix commit: 2d08935682ac KVM: x86: Don't re-acquire SRCU lock in complete_emulated_io()
First crash: 1598d, last: 426d
Cause bisection: introduced by (bisect log) :
commit 5a781ccbd19e4664babcbe4b4ead7aa2b9283d22
Author: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Date: Sat Sep 29 00:59:43 2018 +0000

  tc: Add support for configuring the taprio scheduler

Crash: INFO: rcu detected stall in smp_call_function (log)
Repro: C syz .config
  
Fix bisection: fixed by (bisect log) :
commit 2d08935682ac5f6bfb70f7e6844ec27d4a245fa4
Author: Sean Christopherson <seanjc@google.com>
Date: Fri Apr 15 00:43:41 2022 +0000

  KVM: x86: Don't re-acquire SRCU lock in complete_emulated_io()

  
Discussions (1)
Title Replies (including bot) Last reply
INFO: task hung in synchronize_rcu (3) 3 (6) 2022/05/10 13:56
Similar bugs (10)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 INFO: task hung in synchronize_rcu origin:lts-only C unreliable 5 18d 381d 0/3 upstream: reported C repro on 2023/04/01 04:49
android-49 INFO: task hung in synchronize_rcu 1 1600d 1600d 0/3 auto-closed as invalid on 2020/03/28 16:57
linux-4.14 INFO: task hung in synchronize_rcu vfs C error 162 440d 1622d 0/1 upstream: reported C repro on 2019/11/07 04:32
linux-4.19 INFO: task hung in synchronize_rcu C error 70 430d 1620d 0/1 upstream: reported C repro on 2019/11/08 21:27
linux-5.15 INFO: task hung in synchronize_rcu 1 366d 366d 0/3 auto-obsoleted due to no activity on 2023/08/14 02:05
upstream INFO: task hung in synchronize_rcu syz done 1206 1600d 1626d 14/26 fixed on 2019/11/29 15:48
upstream INFO: task hung in synchronize_rcu (4) net fs C done error 37 9d06h 348d 0/26 upstream: reported C repro on 2023/05/04 02:01
linux-5.15 INFO: task hung in synchronize_rcu (2) 1 55d 55d 0/3 upstream: reported on 2024/02/21 13:53
android-414 INFO: task hung in synchronize_rcu 1 1618d 1618d 0/1 auto-closed as invalid on 2020/03/10 10:42
upstream INFO: task hung in synchronize_rcu (2) trace 8 1599d 1599d 0/26 closed as invalid on 2019/11/30 16:54
Last patch testing requests (3)
Created Duration User Patch Repo Result
2022/05/11 13:26 17m hdanton@sina.com patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/ 4fa640dc OK
2022/05/10 11:53 7m hdanton@sina.com patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/ 4fa640dc error OK
2022/05/10 11:08 4m hdanton@sina.com patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/ 4fa640dc error OK
Fix bisection attempts (4)
Created Duration User Patch Repo Result
2022/05/10 04:24 4h25m bisect fix upstream job log (1)
2021/12/14 08:05 23m bisect fix upstream job log (0) log
2020/11/07 07:37 24m bisect fix upstream job log (0) log
2020/08/21 00:02 27m bisect fix upstream job log (0) log

Sample crash report:
INFO: task dhcpcd:5356 blocked for more than 147 seconds.
      Not tainted 6.2.0-rc8-syzkaller-00019-g82eac0c830b7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:dhcpcd          state:D stack:26520 pid:5356  ppid:4646   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5293 [inline]
 __schedule+0xb8a/0x5450 kernel/sched/core.c:6606
 schedule+0xde/0x1b0 kernel/sched/core.c:6682
 synchronize_rcu_expedited+0x39f/0x780 kernel/rcu/tree_exp.h:961
 synchronize_rcu+0x306/0x3b0 kernel/rcu/tree.c:3543
 synchronize_net+0x4e/0x60 net/core/dev.c:10749
 __unregister_prot_hook+0x48a/0x5a0 net/packet/af_packet.c:382
 packet_do_bind+0x8bc/0xdc0 net/packet/af_packet.c:3227
 packet_bind+0x156/0x1b0 net/packet/af_packet.c:3311
 __sys_bind+0x1ed/0x260 net/socket.c:1776
 __do_sys_bind net/socket.c:1787 [inline]
 __se_sys_bind net/socket.c:1785 [inline]
 __x64_sys_bind+0x73/0xb0 net/socket.c:1785
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f2779c8ece7
RSP: 002b:00007ffc51a4f398 EFLAGS: 00000217 ORIG_RAX: 0000000000000031
RAX: ffffffffffffffda RBX: 000055b9eafc7b60 RCX: 00007f2779c8ece7
RDX: 0000000000000014 RSI: 00007ffc51a4f3a8 RDI: 0000000000000005
RBP: 0000000000000000 R08: 000055b9eb236aa0 R09: 00007f2779d4fa60
R10: 0000000000200000 R11: 0000000000000217 R12: 000055b9eb233630
R13: 000055b9eb236318 R14: 00007ffc51a6fc7c R15: 00007ffc51a6fca4
 </TASK>

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
 #0: ffffffff8c791750 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
 #0: ffffffff8c791450 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/27:
 #0: ffffffff8c7922a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x57/0x264 kernel/locking/lockdep.c:6494
3 locks held by kworker/0:2/1107:
2 locks held by getty/4749:
 #0: ffff88814a10a098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244
 #1: ffffc900015c02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177
1 lock held by syz-executor239/5347:
 #0: ffffffff8c79cf78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:324 [inline]
 #0: ffffffff8c79cf78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x24f/0x780 kernel/rcu/tree_exp.h:946
2 locks held by dhcpcd/5356:
 #0: ffff88807f1e0130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline]
 #0: ffff88807f1e0130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2f/0xdc0 net/packet/af_packet.c:3194
 #1: ffffffff8c79cf78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline]
 #1: ffffffff8c79cf78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x5df/0x780 kernel/rcu/tree_exp.h:946
1 lock held by dhcpcd/5396:
 #0: ffff888028c00130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline]
 #0: ffff888028c00130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2f/0xdc0 net/packet/af_packet.c:3194
1 lock held by dhcpcd/5398:
 #0: ffff88807b61c130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline]
 #0: ffff88807b61c130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2f/0xdc0 net/packet/af_packet.c:3194
1 lock held by dhcpcd/5399:
 #0: ffff8881a8b4c130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline]
 #0: ffff8881a8b4c130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2f/0xdc0 net/packet/af_packet.c:3194
1 lock held by dhcpcd/5400:
 #0: ffff88801d158130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline]
 #0: ffff88801d158130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2f/0xdc0 net/packet/af_packet.c:3194
1 lock held by dhcpcd/5406:
 #0: ffff88801d62c130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline]
 #0: ffff88801d62c130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2f/0xdc0 net/packet/af_packet.c:3194
1 lock held by syz-executor239/5441:
2 locks held by syz-executor239/5442:

=============================================

NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 6.2.0-rc8-syzkaller-00019-g82eac0c830b7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd1/0x138 lib/dump_stack.c:106
 nmi_cpu_backtrace.cold+0x24/0x18a lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x333/0x3c0 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
 watchdog+0xc75/0xfc0 kernel/hung_task.c:377
 kthread+0x2e8/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5447 Comm: syz-executor239 Not tainted 6.2.0-rc8-syzkaller-00019-g82eac0c830b7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
RIP: 0010:lock_acquire+0x74/0x630 kernel/locking/lockdep.c:5636
Code: 45 f1 8b 48 01 d8 48 c7 44 24 28 20 a6 63 81 c7 00 f1 f1 f1 f1 c7 40 04 f1 f1 00 00 c7 40 08 00 00 00 f3 c7 40 0c f3 f3 f3 f3 <65> 48 8b 04 25 28 00 00 00 48 89 84 24 b0 00 00 00 31 c0 0f 1f 44
RSP: 0018:ffffc9000325f4a0 EFLAGS: 00000282
RAX: fffff5200064be97 RBX: 1ffff9200064be97 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8c8f8aa0
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: fffffbfff226bd5a R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff8c8f8aa0 R15: 0000000000000000
FS:  0000555556b67400(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000040 CR3: 0000000041521000 CR4: 0000000000350ee0
Call Trace:
 <TASK>
 fs_reclaim_acquire mm/page_alloc.c:4691 [inline]
 fs_reclaim_acquire+0xda/0x160 mm/page_alloc.c:4682
 might_alloc include/linux/sched/mm.h:271 [inline]
 prepare_alloc_pages+0x159/0x570 mm/page_alloc.c:5320
 __alloc_pages+0x149/0x5b0 mm/page_alloc.c:5538
 alloc_pages+0x1aa/0x270 mm/mempolicy.c:2287
 __get_free_pages+0xc/0x40 mm/page_alloc.c:5599
 kasan_populate_vmalloc_pte mm/kasan/shadow.c:271 [inline]
 kasan_populate_vmalloc_pte+0x27/0x150 mm/kasan/shadow.c:262
 apply_to_pte_range mm/memory.c:2596 [inline]
 apply_to_pmd_range mm/memory.c:2640 [inline]
 apply_to_pud_range mm/memory.c:2676 [inline]
 apply_to_p4d_range mm/memory.c:2712 [inline]
 __apply_to_page_range+0x68c/0x1030 mm/memory.c:2746
 alloc_vmap_area+0x512/0x1ed0 mm/vmalloc.c:1647
 __get_vm_area_node+0x142/0x3f0 mm/vmalloc.c:2515
 __vmalloc_node_range+0x25b/0x13c0 mm/vmalloc.c:3187
 __bpf_map_area_alloc+0xd0/0x160 kernel/bpf/syscall.c:332
 queue_stack_map_alloc+0xfb/0x1b0 kernel/bpf/queue_stack_maps.c:77
 find_and_alloc_map kernel/bpf/syscall.c:131 [inline]
 map_create+0x4d3/0x18d0 kernel/bpf/syscall.c:1123
 __sys_bpf+0x13b7/0x5000 kernel/bpf/syscall.c:4951
 __do_sys_bpf kernel/bpf/syscall.c:5073 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5071 [inline]
 __x64_sys_bpf+0x79/0xc0 kernel/bpf/syscall.c:5071
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f983b984139
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 31 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe44148cf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f983b984139
RDX: 0000000000000048 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 0000000000000000 R08: 00007ffe44148780 R09: 0000000000000003
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe44148d28
R13: 00007ffe44148d40 R14: 00007ffe44148d80 R15: 000000000000002e
 </TASK>

Crashes (374):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/02/15 05:55 upstream 82eac0c830b7 1d6b4af7 .config console log report syz C ci-upstream-kasan-gce-root INFO: task hung in synchronize_rcu
2023/01/24 18:10 upstream 7bf70dbb1882 9dfcf09c .config console log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in synchronize_rcu
2023/01/09 21:38 upstream 1fe4fd6f5cad 1dac8c7a .config console log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in synchronize_rcu
2022/10/08 20:12 upstream e8bc52cb8df8 aea5da89 .config strace log report syz C ci-upstream-kasan-gce INFO: task hung in synchronize_rcu
2022/09/29 15:53 upstream c3e0e1e23c70 1d385642 .config console log report syz C ci-upstream-kasan-gce INFO: task hung in synchronize_rcu
2022/05/25 21:19 upstream fdaf9a5840ac 647c0e27 .config strace log report syz C ci-upstream-kasan-gce INFO: task hung in synchronize_rcu
2022/03/08 13:51 upstream ea4424be1688 7bdd8b2c .config console log report syz C ci-upstream-kasan-gce INFO: task hung in synchronize_rcu
2022/02/27 14:28 upstream 2293be58d6a1 45a13a73 .config console log report syz C ci-upstream-kasan-gce-root INFO: task hung in synchronize_rcu
2022/02/13 07:09 upstream b81b1829e7e3 8b9ca619 .config console log report syz C ci-upstream-kasan-gce-root INFO: task hung in synchronize_rcu
2022/12/27 06:10 net-old 13a7c8964afc 9da18ae8 .config console log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in synchronize_rcu
2022/10/17 07:10 net-next-old 0326074ff465 67cb024c .config console log report syz C ci-upstream-net-kasan-gce INFO: task hung in synchronize_rcu
2023/01/26 16:21 linux-next 691781f561e9 9dfcf09c .config console log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in synchronize_rcu
2022/11/30 05:30 linux-next 9e46a7996732 05dc7993 .config console log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in synchronize_rcu
2022/03/22 08:11 linux-next f9006d9269ea e2d91b1d .config console log report syz C ci-upstream-linux-next-kasan-gce-root INFO: task hung in synchronize_rcu
2020/07/22 00:02 upstream 4fa640dc5230 21f1765e .config console log report syz C ci-upstream-kasan-gce-386
2023/01/05 06:51 upstream 512dee0c00ad 1dac8c7a .config console log report syz [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in synchronize_rcu
2022/12/26 10:54 upstream 1b929c02afd3 9da18ae8 .config console log report syz [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in synchronize_rcu
2022/10/28 04:30 upstream b229b6ca5abb 86777b7f .config console log report syz ci-upstream-kasan-gce-root INFO: task hung in synchronize_rcu
2022/10/17 04:32 upstream 55be6084c8e0 67cb024c .config console log report syz [disk image] [vmlinux] ci-upstream-kasan-gce-root INFO: task hung in synchronize_rcu
2022/08/28 20:23 upstream 10d4879f9ef0 07177916 .config console log report syz ci-upstream-kasan-gce-smack-root INFO: task hung in synchronize_rcu
2021/10/28 01:40 upstream d25f27432f80 373bf66b .config console log report syz ci-upstream-kasan-gce INFO: task hung in synchronize_rcu
2022/12/26 18:32 net-next-old c183e6c3ec34 9da18ae8 .config strace log report syz [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in synchronize_rcu
2022/09/02 00:57 net-next-old 2af39b996485 86c46e46 .config console log report syz ci-upstream-net-kasan-gce INFO: task hung in synchronize_rcu
2022/05/22 16:13 net-next-old aa5334b1f968 7268fa62 .config console log report syz ci-upstream-net-kasan-gce INFO: task hung in synchronize_rcu
2022/12/02 07:42 linux-next 9e46a7996732 e080de16 .config console log report syz [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in synchronize_rcu
2022/11/14 01:37 linux-next f8f60f322f06 3ead01ad .config console log report syz ci-upstream-linux-next-kasan-gce-root INFO: task hung in synchronize_rcu
2022/08/16 18:14 linux-next 6c8f479764eb 7a7cb304 .config console log report syz ci-upstream-linux-next-kasan-gce-root INFO: task hung in synchronize_rcu
2023/02/03 01:03 upstream 9f266ccaa2f5 16d19e30 .config console log report info ci-upstream-kasan-gce INFO: task hung in synchronize_rcu
2023/01/07 05:36 upstream a689b938df39 1dac8c7a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: task hung in synchronize_rcu
2022/12/26 20:19 upstream 1b929c02afd3 9da18ae8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in synchronize_rcu
2022/09/20 18:48 upstream 60891ec99e14 7c41a9ba .config console log report info ci-upstream-kasan-gce-smack-root INFO: task hung in synchronize_rcu
2022/09/19 17:26 upstream 521a547ced64 dd9a85ff .config console log report info ci-upstream-kasan-gce-smack-root INFO: task hung in synchronize_rcu
2022/09/19 16:22 upstream 521a547ced64 dd9a85ff .config console log report info ci-upstream-kasan-gce-root INFO: task hung in synchronize_rcu
2022/03/19 12:16 upstream 34e047aa16c0 e2d91b1d .config console log report info ci-upstream-kasan-gce INFO: task hung in synchronize_rcu
2022/03/17 02:59 upstream 56e337f2cf13 dfa9a8ed .config console log report info ci-upstream-kasan-gce INFO: task hung in synchronize_rcu
2022/02/13 10:30 upstream b81b1829e7e3 8b9ca619 .config console log report info ci-upstream-kasan-gce-smack-root INFO: task hung in synchronize_rcu
2022/01/29 17:56 upstream 169387e2aa29 495e00c5 .config console log report info ci-upstream-kasan-gce INFO: task hung in synchronize_rcu
2022/01/13 09:15 upstream f079ab01b560 44d1319a .config console log report info ci-upstream-kasan-gce-smack-root INFO: task hung in synchronize_rcu
2022/01/10 08:00 upstream df0cc57e057f 2ca0d385 .config console log report info ci-upstream-kasan-gce INFO: task hung in synchronize_rcu
2022/01/09 17:03 upstream 4634129ad9fd 2ca0d385 .config console log report info ci-upstream-kasan-gce INFO: task hung in synchronize_rcu
2021/12/25 07:00 upstream b927dfc67d05 6caa12e4 .config console log report info ci-upstream-kasan-gce-selinux-root INFO: task hung in synchronize_rcu
2021/12/22 20:59 upstream 3f066e882bf1 6caa12e4 .config console log report info ci-upstream-kasan-gce-root INFO: task hung in synchronize_rcu
2021/11/14 07:41 upstream ccfff0a2bd2a 83f5c9b5 .config console log report info ci-upstream-kasan-gce INFO: task hung in synchronize_rcu
2021/11/14 05:43 upstream ccfff0a2bd2a 83f5c9b5 .config console log report info ci-upstream-kasan-gce INFO: task hung in synchronize_rcu
2021/11/13 06:22 upstream 7246f4dcaccc 83f5c9b5 .config console log report info ci-upstream-kasan-gce INFO: task hung in synchronize_rcu
2021/11/11 13:14 upstream debe436e77c7 75b04091 .config console log report info ci-upstream-kasan-gce INFO: task hung in synchronize_rcu
2021/11/11 04:08 upstream 89d714ab6043 75b04091 .config console log report info ci-upstream-kasan-gce INFO: task hung in synchronize_rcu
2021/11/11 00:26 upstream 89d714ab6043 75b04091 .config console log report info ci-upstream-kasan-gce-smack-root INFO: task hung in synchronize_rcu
2021/11/09 17:22 upstream d2f38a3c6507 59bcaf9a .config console log report info ci-upstream-kasan-gce-selinux-root INFO: task hung in synchronize_rcu
2021/11/07 04:31 upstream 512b7931ad05 4c1be0be .config console log report info ci-upstream-kasan-gce-smack-root INFO: task hung in synchronize_rcu
2021/11/05 23:37 upstream fe91c4725aee 4c1be0be .config console log report info ci-upstream-kasan-gce-selinux-root INFO: task hung in synchronize_rcu
2021/11/05 04:10 upstream 7ddb58cb0eca 4c1be0be .config console log report info ci-upstream-kasan-gce INFO: task hung in synchronize_rcu
2021/11/04 09:48 upstream ce840177930f 4c1be0be .config console log report info ci-upstream-kasan-gce INFO: task hung in synchronize_rcu
2021/11/04 00:06 upstream dcd68326d29b 4c1be0be .config console log report info ci-upstream-kasan-gce-smack-root INFO: task hung in synchronize_rcu
2021/11/02 19:31 upstream bfc484fe6abb 17f3edd2 .config console log report info ci-upstream-kasan-gce INFO: task hung in synchronize_rcu
2021/11/02 10:40 upstream d2fac0afe89f 098b5d53 .config console log report info ci-upstream-kasan-gce-root INFO: task hung in synchronize_rcu
2021/11/02 06:54 upstream e66435936756 098b5d53 .config console log report info ci-upstream-kasan-gce INFO: task hung in synchronize_rcu
2023/01/28 21:55 upstream 5af6ce704936 7374c4e5 .config console log report info ci-qemu2-arm32 INFO: task hung in synchronize_rcu
2022/09/12 06:46 upstream 4ed9c1e971b1 356d8217 .config console log report info ci-qemu2-arm32 INFO: task hung in synchronize_rcu
2022/08/28 05:32 upstream c1c76700a0d6 07177916 .config console log report info ci-qemu2-arm32 INFO: task hung in synchronize_rcu
2022/08/19 23:50 upstream c1c76700a0d6 26a13b38 .config console log report info ci-qemu2-arm32 INFO: task hung in synchronize_rcu
2022/07/14 19:15 upstream 4a57a8400075 5d921b08 .config console log report info ci-qemu2-arm32 INFO: task hung in synchronize_rcu
2022/07/07 02:47 upstream 9f09069cde34 bff65f44 .config console log report info ci-qemu2-arm32 INFO: task hung in synchronize_rcu
2022/06/22 06:58 upstream ca1fdab7fd27 0fc5c330 .config console log report info ci-qemu2-arm32 INFO: task hung in synchronize_rcu
2022/03/06 06:09 upstream ac84e82f78cb 7bdd8b2c .config console log report info ci-qemu2-arm32 INFO: task hung in synchronize_rcu
2022/02/03 13:51 upstream 88808fbbead4 4ebb2798 .config console log report info ci-qemu2-arm32 INFO: task hung in synchronize_rcu
2021/11/06 20:31 upstream fe91c4725aee 4c1be0be .config console log report info ci-upstream-kasan-gce-386 INFO: task hung in synchronize_rcu
2022/05/25 08:39 net-old 7fb0269720d7 647c0e27 .config console log report info ci-upstream-net-this-kasan-gce INFO: task hung in synchronize_rcu
2021/10/22 08:21 bpf 1acfe7c9b44b 55f90bc6 .config console log report info ci-upstream-bpf-kasan-gce INFO: task hung in synchronize_rcu
2021/10/19 14:52 bpf-next 223f903e9c83 24dc29db .config console log report info ci-upstream-bpf-next-kasan-gce INFO: task hung in synchronize_rcu
2022/12/28 20:21 linux-next c76083fac3ba 44712fbc .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in synchronize_rcu
2022/07/11 22:29 linux-next cb71b93c2dc3 da3d6955 .config console log report info ci-upstream-linux-next-kasan-gce-root INFO: task hung in synchronize_rcu
2022/04/08 03:52 linux-next 2e9a9857569e c6ff3e05 .config console log report info ci-upstream-linux-next-kasan-gce-root INFO: task hung in synchronize_rcu
2021/11/13 12:42 linux-next f2e19fd15bd7 83f5c9b5 .config console log report info ci-upstream-linux-next-kasan-gce-root INFO: task hung in synchronize_rcu
2021/11/10 17:51 linux-next 73e5c18006f5 75b04091 .config console log report info ci-upstream-linux-next-kasan-gce-root INFO: task hung in synchronize_rcu
2019/12/01 07:56 upstream 32ef9553635a a76bf83f .config console log report ci-upstream-kasan-gce-root
2021/01/16 01:18 bpf-next eed6a9a9571b 65a7a854 .config console log report info ci-upstream-bpf-next-kasan-gce
2021/11/13 01:25 linux-next f2e19fd15bd7 83f5c9b5 .config console log report info ci-upstream-linux-next-kasan-gce-root INFO: task can't die in __synchronize_srcu
* Struck through repros no longer work on HEAD.