syzbot


BUG: workqueue lockup (4)

Status: fixed on 2019/12/13 00:31
Subsystems: block
[Documentation on labels]
Reported-by: syzbot+08116743f8ad6f9a6de7@syzkaller.appspotmail.com
Fix commit: 7e7c005b4b1f rtc: disable uie before setting time and enable after
First crash: 2121d, last: 1647d
Discussions (8)
Title Replies (including bot) Last reply
[PATCH 5.4 000/177] 5.4.4-stable review 188 (188) 2019/12/17 18:48
[PATCH 5.3 000/180] 5.3.17-stable review 185 (185) 2019/12/17 18:19
[PATCH 4.19 000/140] 4.19.90-stable review 150 (150) 2019/12/17 18:18
[PATCH] rtc: disable uie before setting time and enable after 2 (2) 2019/10/21 15:56
[PATCH] rtc: disable uie before setting time and enable after 1 (1) 2019/10/20 23:13
Reminder: 1 open syzbot bug in rtc subsystem 5 (5) 2019/08/02 10:24
Reminder: 1 open syzbot bug in rtc subsystem 1 (1) 2019/07/02 05:10
BUG: workqueue lockup (4) 4 (5) 2019/06/11 06:59
Similar bugs (14)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 BUG: workqueue lockup origin:upstream C 185 7h02m 438d 0/3 upstream: reported C repro on 2023/03/11 08:51
android-5-15 BUG: workqueue lockup origin:upstream missing-backport C error 405 2h46m 334d 0/2 upstream: reported C repro on 2023/06/22 22:19
upstream BUG: workqueue lockup (2) C 406 2203d 2361d 5/26 fixed on 2018/05/13 10:02
linux-4.14 BUG: workqueue lockup C 282 448d 1849d 0/1 upstream: reported C repro on 2019/04/29 11:26
upstream BUG: workqueue lockup C 172 2384d 2394d 3/26 fixed on 2017/11/11 01:37
upstream BUG: workqueue lockup (5) kernel C done 4168 44m 1589d 0/26 upstream: reported C repro on 2020/01/14 22:04
android-5-10 BUG: workqueue lockup (2) C error 844 2h47m 443d 0/2 upstream: reported C repro on 2023/03/05 21:10
upstream BUG: workqueue lockup (3) C 1215 2147d 2200d 8/26 fixed on 2018/07/09 18:05
android-6-1 BUG: workqueue lockup origin:upstream C error 457 8h22m 303d 0/2 upstream: reported C repro on 2023/07/23 17:25
android-414 BUG: workqueue lockup C 114 1712d 1868d 0/1 public: reported C repro on 2019/04/11 00:00
linux-4.19 BUG: workqueue lockup C error 41 442d 1856d 0/1 upstream: reported C repro on 2019/04/22 20:37
android-5-10 BUG: workqueue lockup C error 25 842d 940d 0/2 closed as invalid on 2022/02/22 17:18
android-49 BUG: workqueue lockup C 69 1636d 1868d 0/3 public: reported C repro on 2019/04/11 08:44
linux-6.1 BUG: workqueue lockup origin:upstream C 139 1d01h 441d 0/3 upstream: reported C repro on 2023/03/07 17:51

Sample crash report:
hrtimer: interrupt took 27669 ns
BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 151s!
Showing busy workqueues and worker pools:
workqueue events: flags=0x0
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=4/256
    pending: vmstat_shepherd, psi_update_work, cache_reap, check_corruption

======================================================
WARNING: possible circular locking dependency detected
5.1.0-rc6 #79 Not tainted
------------------------------------------------------
ksoftirqd/0/9 is trying to acquire lock:
0000000038e7b405 (console_owner){-.-.}, at: log_next kernel/printk/printk.c:499 [inline]
0000000038e7b405 (console_owner){-.-.}, at: console_unlock+0x3fc/0xed0 kernel/printk/printk.c:2439

but task is already holding lock:
00000000c0b5977e (&(&pool->lock)->rlock){-.-.}, at: show_workqueue_state.cold+0x879/0x11dc kernel/workqueue.c:4723

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #4 (&(&pool->lock)->rlock){-.-.}:
       lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:4211
       __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
       _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144
       spin_lock include/linux/spinlock.h:329 [inline]
       __queue_work+0x23d/0x10e0 kernel/workqueue.c:1449
       queue_work_on+0x192/0x200 kernel/workqueue.c:1518
       queue_work include/linux/workqueue.h:494 [inline]
       schedule_work include/linux/workqueue.h:552 [inline]
       put_pwq kernel/workqueue.c:1122 [inline]
       put_pwq+0x178/0x1d0 kernel/workqueue.c:1107
       put_pwq_unlocked.part.0+0x34/0x70 kernel/workqueue.c:1139
       put_pwq_unlocked kernel/workqueue.c:1133 [inline]
       destroy_workqueue+0x623/0x700 kernel/workqueue.c:4383
       do_floppy_init drivers/block/floppy.c:4699 [inline]
       floppy_async_init+0x2031/0x2183 drivers/block/floppy.c:4717
       async_run_entry_fn+0x126/0x570 kernel/async.c:127
       process_one_work+0x98e/0x1790 kernel/workqueue.c:2269
       worker_thread+0x98/0xe40 kernel/workqueue.c:2415
       kthread+0x357/0x430 kernel/kthread.c:253
       ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352

-> #3 (&pool->lock/1){..-.}:
       lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:4211
       __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
       _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144
       spin_lock include/linux/spinlock.h:329 [inline]
       __queue_work+0x23d/0x10e0 kernel/workqueue.c:1449
       queue_work_on+0x192/0x200 kernel/workqueue.c:1518
       queue_work include/linux/workqueue.h:494 [inline]
       tty_schedule_flip drivers/tty/tty_buffer.c:413 [inline]
       tty_flip_buffer_push+0xc5/0x100 drivers/tty/tty_buffer.c:556
       pty_write+0x1a6/0x200 drivers/tty/pty.c:125
       n_tty_write+0xb06/0x1150 drivers/tty/n_tty.c:2356
       do_tty_write drivers/tty/tty_io.c:961 [inline]
       tty_write+0x45b/0x7a0 drivers/tty/tty_io.c:1045
       __vfs_write+0x8d/0x110 fs/read_write.c:485
       vfs_write+0x20c/0x580 fs/read_write.c:549
       ksys_write+0x14f/0x2d0 fs/read_write.c:599
       __do_sys_write fs/read_write.c:611 [inline]
       __se_sys_write fs/read_write.c:608 [inline]
       __x64_sys_write+0x73/0xb0 fs/read_write.c:608
       do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
       entry_SYSCALL_64_after_hwframe+0x49/0xbe

-> #2 (&(&port->lock)->rlock){-.-.}:
       lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:4211
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0x95/0xcd kernel/locking/spinlock.c:152
       tty_port_tty_get+0x22/0x80 drivers/tty/tty_port.c:287
       tty_port_default_wakeup+0x16/0x40 drivers/tty/tty_port.c:47
       tty_port_tty_wakeup+0x5d/0x70 drivers/tty/tty_port.c:387
       uart_write_wakeup+0x46/0x70 drivers/tty/serial/serial_core.c:103
       serial8250_tx_chars+0x4a4/0xb20 drivers/tty/serial/8250/8250_port.c:1806
       serial8250_handle_irq.part.0+0x1be/0x2e0 drivers/tty/serial/8250/8250_port.c:1879
       serial8250_handle_irq drivers/tty/serial/8250/8250_port.c:1865 [inline]
       serial8250_default_handle_irq+0xc5/0x150 drivers/tty/serial/8250/8250_port.c:1895
       serial8250_interrupt+0xfb/0x1a0 drivers/tty/serial/8250/8250_core.c:125
       __handle_irq_event_percpu+0x146/0x900 kernel/irq/handle.c:149
       handle_irq_event_percpu+0x74/0x160 kernel/irq/handle.c:189
       handle_irq_event+0xa7/0x134 kernel/irq/handle.c:206
       handle_edge_irq+0x264/0x8e0 kernel/irq/chip.c:822
       generic_handle_irq_desc include/linux/irqdesc.h:156 [inline]
       handle_irq+0x252/0x3d8 arch/x86/kernel/irq_64.c:78
       do_IRQ+0x99/0x1d0 arch/x86/kernel/irq.c:246
       ret_from_intr+0x0/0x1e
       arch_local_irq_restore arch/x86/include/asm/paravirt.h:767 [inline]
       __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
       _raw_spin_unlock_irqrestore+0x95/0xe0 kernel/locking/spinlock.c:184
       spin_unlock_irqrestore include/linux/spinlock.h:384 [inline]
       uart_write+0x3b6/0x6f0 drivers/tty/serial/serial_core.c:615
       process_output_block drivers/tty/n_tty.c:595 [inline]
       n_tty_write+0x3ff/0x1150 drivers/tty/n_tty.c:2333
       do_tty_write drivers/tty/tty_io.c:961 [inline]
       tty_write+0x45b/0x7a0 drivers/tty/tty_io.c:1045
       redirected_tty_write+0xb2/0xc0 drivers/tty/tty_io.c:1066
       __vfs_write+0x8d/0x110 fs/read_write.c:485
       vfs_write+0x20c/0x580 fs/read_write.c:549
       ksys_write+0x14f/0x2d0 fs/read_write.c:599
       __do_sys_write fs/read_write.c:611 [inline]
       __se_sys_write fs/read_write.c:608 [inline]
       __x64_sys_write+0x73/0xb0 fs/read_write.c:608
       do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
       entry_SYSCALL_64_after_hwframe+0x49/0xbe

-> #1 (&port_lock_key){-.-.}:
       lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:4211
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0x95/0xcd kernel/locking/spinlock.c:152
       serial8250_console_write+0x253/0x9c0 drivers/tty/serial/8250/8250_port.c:3245
       univ8250_console_write+0x5f/0x70 drivers/tty/serial/8250/8250_core.c:586
       call_console_drivers kernel/printk/printk.c:1774 [inline]
       console_unlock+0xb44/0xed0 kernel/printk/printk.c:2452
       vprintk_emit+0x280/0x6d0 kernel/printk/printk.c:1975
       vprintk_default+0x28/0x30 kernel/printk/printk.c:2002
       vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:398
       printk+0xba/0xed kernel/printk/printk.c:2035
       register_console+0x74d/0xb50 kernel/printk/printk.c:2767
       univ8250_console_init+0x3e/0x4b drivers/tty/serial/8250/8250_core.c:681
       console_init+0x4f7/0x761 kernel/printk/printk.c:2853
       start_kernel+0x574/0x84f init/main.c:675
       x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:470
       x86_64_start_kernel+0x77/0x7b arch/x86/kernel/head64.c:451
       secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243

-> #0 (console_owner){-.-.}:
       check_prevs_add kernel/locking/lockdep.c:2333 [inline]
       validate_chain kernel/locking/lockdep.c:2714 [inline]
       __lock_acquire+0x239c/0x3fb0 kernel/locking/lockdep.c:3701
       lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:4211
       console_lock_spinning_enable kernel/printk/printk.c:1637 [inline]
       console_unlock+0x466/0xed0 kernel/printk/printk.c:2449
       vprintk_emit+0x280/0x6d0 kernel/printk/printk.c:1975
       vprintk_default+0x28/0x30 kernel/printk/printk.c:2002
       vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:398
       printk+0xba/0xed kernel/printk/printk.c:2035
       show_pwq kernel/workqueue.c:4630 [inline]
       show_workqueue_state.cold+0x9e4/0x11dc kernel/workqueue.c:4725
       wq_watchdog_timer_fn+0x516/0x5a0 kernel/workqueue.c:5737
       call_timer_fn+0x190/0x720 kernel/time/timer.c:1325
       expire_timers kernel/time/timer.c:1362 [inline]
       __run_timers kernel/time/timer.c:1681 [inline]
       __run_timers kernel/time/timer.c:1649 [inline]
       run_timer_softirq+0xd03/0x1700 kernel/time/timer.c:1696
       __do_softirq+0x266/0x95a kernel/softirq.c:293
       run_ksoftirqd kernel/softirq.c:655 [inline]
       run_ksoftirqd+0x8e/0x110 kernel/softirq.c:647
       smpboot_thread_fn+0x6ab/0xa40 kernel/smpboot.c:164
       kthread+0x357/0x430 kernel/kthread.c:253
       ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352

other info that might help us debug this:

Chain exists of:
  console_owner --> &pool->lock/1 --> &(&pool->lock)->rlock

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&(&pool->lock)->rlock);
                               lock(&pool->lock/1);
                               lock(&(&pool->lock)->rlock);
  lock(console_owner);

 *** DEADLOCK ***

4 locks held by ksoftirqd/0/9:
 #0: 000000000fa65e1b ((&wq_watchdog_timer)){+.-.}, at: lockdep_copy_map include/linux/lockdep.h:170 [inline]
 #0: 000000000fa65e1b ((&wq_watchdog_timer)){+.-.}, at: call_timer_fn+0xda/0x720 kernel/time/timer.c:1315
 #1: 000000000183de91 (rcu_read_lock_sched){....}, at: show_workqueue_state+0x0/0x120 kernel/workqueue.c:4595
 #2: 00000000c0b5977e (&(&pool->lock)->rlock){-.-.}, at: show_workqueue_state.cold+0x879/0x11dc kernel/workqueue.c:4723
 #3: 00000000c90a8d8b (console_lock){+.+.}, at: console_trylock_spinning kernel/printk/printk.c:1699 [inline]
 #3: 00000000c90a8d8b (console_lock){+.+.}, at: vprintk_emit+0x267/0x6d0 kernel/printk/printk.c:1974

stack backtrace:
CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 5.1.0-rc6 #79
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 print_circular_bug.isra.0.cold+0x1cc/0x28f kernel/locking/lockdep.c:1571
 check_prev_add.constprop.0+0xf11/0x23c0 kernel/locking/lockdep.c:2220
 check_prevs_add kernel/locking/lockdep.c:2333 [inline]
 validate_chain kernel/locking/lockdep.c:2714 [inline]
 __lock_acquire+0x239c/0x3fb0 kernel/locking/lockdep.c:3701
 lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:4211
 console_lock_spinning_enable kernel/printk/printk.c:1637 [inline]
 console_unlock+0x466/0xed0 kernel/printk/printk.c:2449
 vprintk_emit+0x280/0x6d0 kernel/printk/printk.c:1975
 vprintk_default+0x28/0x30 kernel/printk/printk.c:2002
 vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:398
 printk+0xba/0xed kernel/printk/printk.c:2035
 show_pwq kernel/workqueue.c:4630 [inline]
 show_workqueue_state.cold+0x9e4/0x11dc kernel/workqueue.c:4725
 wq_watchdog_timer_fn+0x516/0x5a0 kernel/workqueue.c:5737
 call_timer_fn+0x190/0x720 kernel/time/timer.c:1325
 expire_timers kernel/time/timer.c:1362 [inline]
 __run_timers kernel/time/timer.c:1681 [inline]
 __run_timers kernel/time/timer.c:1649 [inline]
 run_timer_softirq+0xd03/0x1700 kernel/time/timer.c:1696
 __do_softirq+0x266/0x95a kernel/softirq.c:293
 run_ksoftirqd kernel/softirq.c:655 [inline]
 run_ksoftirqd+0x8e/0x110 kernel/softirq.c:647
 smpboot_thread_fn+0x6ab/0xa40 kernel/smpboot.c:164
 kthread+0x357/0x430 kernel/kthread.c:253
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
workqueue events_power_efficient: flags=0x80
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=3/256
    in-flight: 12:gc_worker
    pending: do_cache_clean, check_lifetime
workqueue mm_percpu_wq: flags=0x8
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256
    pending: vmstat_update
workqueue dm_bufio_cache: flags=0x8
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256
    pending: work_fn
workqueue ipv6_addrconf: flags=0x40008
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/1
    pending: addrconf_verify_work
pool 0: cpus=0 node=0 flags=0x0 nice=0 hung=152s workers=2 idle: 2996

Crashes (47):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/04/23 07:48 upstream 085b7755808a 53199d6e .config console log report syz C ci-upstream-kasan-gce-root
2019/04/21 03:16 upstream 9e5de623a0cb b0e8efcb .config console log report syz C ci-upstream-kasan-gce-root
2019/04/16 04:23 upstream 618d919cae2f 505ab413 .config console log report syz C ci-upstream-kasan-gce-root
2019/04/15 18:43 upstream dc4060a5dc25 505ab413 .config console log report syz C ci-upstream-kasan-gce-selinux-root
2019/04/12 03:36 upstream 2d06b235815e 13030ef8 .config console log report syz C ci-upstream-kasan-gce-selinux-root
2019/01/19 09:00 upstream 2339e91d0e66 2103a236 .config console log report syz C ci-upstream-kasan-gce-smack-root
2018/12/24 14:05 upstream 8fe28cb58bcb be79df56 .config console log report syz C ci-upstream-kasan-gce-root
2018/11/19 14:18 upstream 9ff01193a20d adf636a8 .config console log report syz C ci-upstream-kasan-gce-root
2018/11/19 14:17 upstream 9ff01193a20d adf636a8 .config console log report syz C ci-upstream-kasan-gce-selinux-root
2018/11/19 14:15 upstream 9ff01193a20d adf636a8 .config console log report syz C ci-upstream-kasan-gce-smack-root
2018/10/13 01:50 upstream 90ad18418c2d caf12900 .config console log report syz C ci-upstream-kasan-gce-root
2018/10/07 13:48 upstream fb1c592cf4c9 8b311eaf .config console log report syz C ci-upstream-kasan-gce-root
2018/10/07 10:37 upstream c1d84a1b42ef 8b311eaf .config console log report syz C ci-upstream-kasan-gce-smack-root
2019/04/15 20:39 linux-next f9221a7a1014 505ab413 .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2018/12/27 18:03 linux-next 6a1d293238c1 43cf01dd .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2018/11/19 13:13 linux-next 442b8cea2477 adf636a8 .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2018/10/13 20:26 linux-next 774ea0551a29 caf12900 .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2018/10/07 11:42 linux-next 12ffaa1197f5 8b311eaf .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2019/06/10 09:29 upstream d1fdb6d8f6a4 0159583c .config console log report syz ci-upstream-kasan-gce-root
2019/06/10 08:57 upstream d1fdb6d8f6a4 0159583c .config console log report syz ci-upstream-kasan-gce-smack-root
2019/07/30 17:38 upstream 2a11c76e5301 f28bf2a5 .config console log report ci-upstream-kasan-gce-smack-root
2019/04/14 04:46 upstream 4443f8e6ac77 c402d8f1 .config console log report ci-upstream-kasan-gce-selinux-root
2019/03/24 05:17 upstream a5ed1e96cafd a2cef203 .config console log report ci-upstream-kasan-gce-selinux-root
2019/03/21 05:49 upstream 54c490164523 427ea487 .config console log report ci-upstream-kasan-gce-selinux-root
2018/12/27 00:07 upstream eed9688f8513 e747ec98 .config console log report ci-upstream-kasan-gce-smack-root
2018/12/07 06:01 upstream abb8d6ecbd8f dcf836b1 .config console log report ci-upstream-kasan-gce-smack-root
2018/11/26 04:35 upstream d6d460b89378 3d3ec907 .config console log report ci-upstream-kasan-gce-root
2018/11/20 05:40 upstream f2ce1065e767 9bc2a903 .config console log report ci-upstream-kasan-gce-root
2018/11/02 05:25 upstream e468f5c06b5e 1f38e9ae .config console log report ci-upstream-kasan-gce-root
2018/10/15 19:05 upstream f0a7d1883d9f 8cd30605 .config console log report ci-upstream-kasan-gce-selinux-root
2018/10/15 11:33 upstream 35a7f35ad1b1 caf12900 .config console log report ci-upstream-kasan-gce-root
2018/10/13 15:10 upstream bab5c80b2110 caf12900 .config console log report ci-upstream-kasan-gce-selinux-root
2018/10/10 01:14 upstream 64c5e530ac2c 8b311eaf .config console log report ci-upstream-kasan-gce-selinux-root
2018/09/11 15:52 upstream 11da3a7f84f1 4ae17b1f .config console log report ci-upstream-kasan-gce-smack-root
2018/09/05 14:55 upstream 28619527b8a7 196410e4 .config console log report ci-upstream-kasan-gce-selinux-root
2019/01/03 17:14 bpf-next b71acb0e3721 66fcd29b .config console log report ci-upstream-bpf-next-kasan-gce
2019/11/18 00:20 linux-next 5a6fcbeabe3e d5696d51 .config console log report ci-upstream-linux-next-kasan-gce-root
2019/06/13 04:10 linux-next 81a72c79224f 3f4e812b .config console log report ci-upstream-linux-next-kasan-gce-root
2019/04/20 01:41 linux-next 3f018f4a019a b0e8efcb .config console log report ci-upstream-linux-next-kasan-gce-root
2019/03/24 03:29 linux-next e382d91f5f80 a2cef203 .config console log report ci-upstream-linux-next-kasan-gce-root
2019/03/12 12:00 linux-next cf08baa29613 12365b99 .config console log report ci-upstream-linux-next-kasan-gce-root
2019/03/04 09:03 linux-next 5d57915a1c8b 7c693b52 .config console log report ci-upstream-linux-next-kasan-gce-root
2019/03/04 06:06 linux-next c63e9e91a254 1c0e457a .config console log report ci-upstream-linux-next-kasan-gce-root
2018/11/23 02:17 linux-next 442b8cea2477 87815d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2018/09/24 09:41 linux-next dad486875956 e029c3e0 .config console log report ci-upstream-linux-next-kasan-gce-root
2018/08/28 07:17 linux-next 18b8bfa7c63b 7ef1de9e .config console log report ci-upstream-linux-next-kasan-gce-root
2018/07/31 20:54 linux-next d1e0b8e0cb7a 1477993e .config console log report ci-upstream-linux-next-kasan-gce-root
* Struck through repros no longer work on HEAD.