BUG: workqueue lockup (5)

BUG: workqueue lockup (5)
Status: upstream: reported C repro on 2020/01/14 22:04
Reported-by: syzbot+f0b66b520b54883d4b9d@syzkaller.appspotmail.com
First crash: 37d, last: 1d09h

Cause bisection: introduced by (bisect log):

commit ebe02de2c60caa3ee5a1b39c7c8b2a40e1fda2d8
Author: Himanshu Jha <himanshujha199640@gmail.com>
Date: Tue Aug 29 13:12:27 2017 +0000

drm/amd/powerplay/hwmgr: Remove null check before kfree

Crash: WARNING in __x86_set_memory_region (log)
Repro: C syz .config

similar bugs (8):
Kernel	Title	Repro	Count	Last	Reported	Patched	Status
upstream	BUG: workqueue lockup (4)	C	47	91d	497d	16/16	fixed on 2019/12/13 00:31
upstream	BUG: workqueue lockup (2)	C	406	647d	805d	6/16	fixed on 2018/05/13 10:02
linux-4.14	BUG: workqueue lockup		14	3d04h	293d	0/1	upstream: reported on 2019/04/29 11:26
upstream	BUG: workqueue lockup	C	172	828d	838d	3/16	fixed on 2017/11/11 01:37
upstream	BUG: workqueue lockup (3)	C	1215	591d	644d	9/16	fixed on 2018/07/09 18:05
android-414	BUG: workqueue lockup	C	114	156d	312d	0/1	public: reported C repro on 2019/04/11 00:00
linux-4.19	BUG: workqueue lockup	C	9	9d14h	300d	0/1	upstream: reported C repro on 2019/04/22 20:37
android-49	BUG: workqueue lockup	C	69	80d	312d	0/3	public: reported C repro on 2019/04/11 08:44

Sample crash report:

BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 149s!
Showing busy workqueues and worker pools:
workqueue events: flags=0x0
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=7/256 refcnt=8
    pending: free_obj_work, vmpressure_work_fn, defense_work_handler, psi_avgs_work, cache_reap, free_work, check_corruption

======================================================
WARNING: possible circular locking dependency detected
5.6.0-rc1-syzkaller #0 Not tainted
------------------------------------------------------
syz-executor281/12206 is trying to acquire lock:
ffffffff89ba1160 (console_owner){-.-.}, at: log_next kernel/printk/printk.c:516 [inline]
ffffffff89ba1160 (console_owner){-.-.}, at: console_unlock+0x415/0xf00 kernel/printk/printk.c:2460

but task is already holding lock:
ffff8880ae936d58 (&(&pool->lock)->rlock){-.-.}, at: show_workqueue_state kernel/workqueue.c:4767 [inline]
ffff8880ae936d58 (&(&pool->lock)->rlock){-.-.}, at: show_workqueue_state.cold+0x156/0x802 kernel/workqueue.c:4740

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #4 (&(&pool->lock)->rlock){-.-.}:
       __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
       _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:151
       spin_lock include/linux/spinlock.h:338 [inline]
       __queue_work+0x285/0x1280 kernel/workqueue.c:1444
       queue_work_on+0x19f/0x210 kernel/workqueue.c:1513
       queue_work include/linux/workqueue.h:494 [inline]
       schedule_work include/linux/workqueue.h:552 [inline]
       put_pwq kernel/workqueue.c:1113 [inline]
       put_pwq+0x178/0x1d0 kernel/workqueue.c:1098
       put_pwq_unlocked.part.0+0x34/0x70 kernel/workqueue.c:1130
       put_pwq_unlocked kernel/workqueue.c:1124 [inline]
       apply_wqattrs_cleanup.part.0+0xf6/0x160 kernel/workqueue.c:3878
       apply_wqattrs_cleanup kernel/workqueue.c:4017 [inline]
       apply_workqueue_attrs_locked+0xeb/0x140 kernel/workqueue.c:4015
       apply_workqueue_attrs+0x31/0x50 kernel/workqueue.c:4046
       padata_setup_cpumasks+0x101/0x150 kernel/padata.c:362
       padata_alloc kernel/padata.c:933 [inline]
       padata_alloc_possible+0x28d/0x490 kernel/padata.c:980
       pcrypt_init_padata+0x20/0x105 crypto/pcrypt.c:338
       pcrypt_init+0x76/0x11b crypto/pcrypt.c:369
       do_one_initcall+0x120/0x820 init/main.c:1146
       do_initcall_level init/main.c:1219 [inline]
       do_initcalls init/main.c:1235 [inline]
       do_basic_setup init/main.c:1255 [inline]
       kernel_init_freeable+0x522/0x5d0 init/main.c:1439
       kernel_init+0x12/0x1bf init/main.c:1346
       ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352

-> #3 (&pool->lock/1){..-.}:
       __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
       _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:151
       spin_lock include/linux/spinlock.h:338 [inline]
       __queue_work+0x285/0x1280 kernel/workqueue.c:1444
       queue_work_on+0x19f/0x210 kernel/workqueue.c:1513
       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+0xb1d/0x1080 drivers/tty/n_tty.c:2356
       do_tty_write drivers/tty/tty_io.c:962 [inline]
       tty_write+0x496/0x7f0 drivers/tty/tty_io.c:1046
       __vfs_write+0x8a/0x110 fs/read_write.c:494
       vfs_write+0x268/0x5d0 fs/read_write.c:558
       ksys_write+0x14f/0x290 fs/read_write.c:611
       __do_sys_write fs/read_write.c:623 [inline]
       __se_sys_write fs/read_write.c:620 [inline]
       __x64_sys_write+0x73/0xb0 fs/read_write.c:620
       do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
       entry_SYSCALL_64_after_hwframe+0x49/0xbe

-> #2 (&(&port->lock)->rlock){-...}:
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0x95/0xcd kernel/locking/spinlock.c:159
       tty_port_tty_get+0x24/0x100 drivers/tty/tty_port.c:287
       tty_port_default_wakeup+0x16/0x40 drivers/tty/tty_port.c:47
       tty_port_tty_wakeup+0x57/0x70 drivers/tty/tty_port.c:387
       uart_write_wakeup+0x46/0x70 drivers/tty/serial/serial_core.c:104
       serial8250_tx_chars+0x495/0xaf0 drivers/tty/serial/8250/8250_port.c:1760
       serial8250_handle_irq.part.0+0x261/0x2b0 drivers/tty/serial/8250/8250_port.c:1833
       serial8250_handle_irq drivers/tty/serial/8250/8250_port.c:1819 [inline]
       serial8250_default_handle_irq+0xc0/0x150 drivers/tty/serial/8250/8250_port.c:1849
       serial8250_interrupt+0xf1/0x1a0 drivers/tty/serial/8250/8250_core.c:126
       __handle_irq_event_percpu+0x15d/0x970 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+0x25e/0x8d0 kernel/irq/chip.c:830
       generic_handle_irq_desc include/linux/irqdesc.h:156 [inline]
       do_IRQ+0xde/0x280 arch/x86/kernel/irq.c:250
       ret_from_intr+0x0/0x36
       arch_local_irq_restore arch/x86/include/asm/paravirt.h:752 [inline]
       __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
       _raw_spin_unlock_irqrestore+0x90/0xe0 kernel/locking/spinlock.c:191
       spin_unlock_irqrestore include/linux/spinlock.h:393 [inline]
       uart_write+0x3b6/0x6f0 drivers/tty/serial/serial_core.c:613
       process_output_block drivers/tty/n_tty.c:595 [inline]
       n_tty_write+0x40e/0x1080 drivers/tty/n_tty.c:2333
       do_tty_write drivers/tty/tty_io.c:962 [inline]
       tty_write+0x496/0x7f0 drivers/tty/tty_io.c:1046
       redirected_tty_write+0xb2/0xc0 drivers/tty/tty_io.c:1067
       __vfs_write+0x8a/0x110 fs/read_write.c:494
       vfs_write+0x268/0x5d0 fs/read_write.c:558
       ksys_write+0x14f/0x290 fs/read_write.c:611
       __do_sys_write fs/read_write.c:623 [inline]
       __se_sys_write fs/read_write.c:620 [inline]
       __x64_sys_write+0x73/0xb0 fs/read_write.c:620
       do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
       entry_SYSCALL_64_after_hwframe+0x49/0xbe

-> #1 (&port_lock_key){-.-.}:
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0x95/0xcd kernel/locking/spinlock.c:159
       serial8250_console_write+0x253/0x9a0 drivers/tty/serial/8250/8250_port.c:3142
       univ8250_console_write+0x5f/0x70 drivers/tty/serial/8250/8250_core.c:587
       call_console_drivers kernel/printk/printk.c:1791 [inline]
       console_unlock+0xb7a/0xf00 kernel/printk/printk.c:2473
       vprintk_emit+0x2a0/0x700 kernel/printk/printk.c:1996
       vprintk_default+0x28/0x30 kernel/printk/printk.c:2023
       vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:386
       printk+0xba/0xed kernel/printk/printk.c:2056
       register_console+0x745/0xb50 kernel/printk/printk.c:2798
       univ8250_console_init+0x3e/0x4b drivers/tty/serial/8250/8250_core.c:682
       console_init+0x461/0x67b kernel/printk/printk.c:2884
       start_kernel+0x636/0x8c5 init/main.c:920
       x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:490
       x86_64_start_kernel+0x77/0x7b arch/x86/kernel/head64.c:471
       secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:242

-> #0 (console_owner){-.-.}:
       check_prev_add kernel/locking/lockdep.c:2475 [inline]
       check_prevs_add kernel/locking/lockdep.c:2580 [inline]
       validate_chain kernel/locking/lockdep.c:2970 [inline]
       __lock_acquire+0x2596/0x4a00 kernel/locking/lockdep.c:3954
       lock_acquire+0x190/0x410 kernel/locking/lockdep.c:4484
       console_lock_spinning_enable kernel/printk/printk.c:1654 [inline]
       console_unlock+0x47f/0xf00 kernel/printk/printk.c:2470
       vprintk_emit+0x2a0/0x700 kernel/printk/printk.c:1996
       vprintk_default+0x28/0x30 kernel/printk/printk.c:2023
       vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:386
       printk+0xba/0xed kernel/printk/printk.c:2056
       show_pwq+0x154/0x7cb kernel/workqueue.c:4673
       show_workqueue_state kernel/workqueue.c:4769 [inline]
       show_workqueue_state.cold+0x1a6/0x802 kernel/workqueue.c:4740
       wq_watchdog_timer_fn+0x511/0x590 kernel/workqueue.c:5783
       call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404
       expire_timers kernel/time/timer.c:1449 [inline]
       __run_timers kernel/time/timer.c:1773 [inline]
       __run_timers kernel/time/timer.c:1740 [inline]
       run_timer_softirq+0xdca/0x1790 kernel/time/timer.c:1788
       __do_softirq+0x262/0x98c kernel/softirq.c:292
       invoke_softirq kernel/softirq.c:373 [inline]
       irq_exit+0x19b/0x1e0 kernel/softirq.c:413
       exiting_irq arch/x86/include/asm/apic.h:546 [inline]
       smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1146
       apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
       arch_local_irq_restore arch/x86/include/asm/paravirt.h:752 [inline]
       __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
       _raw_spin_unlock_irqrestore+0x90/0xe0 kernel/locking/spinlock.c:191
       __debug_check_no_obj_freed lib/debugobjects.c:977 [inline]
       debug_check_no_obj_freed+0x20a/0x441 lib/debugobjects.c:998
       free_pages_prepare mm/page_alloc.c:1168 [inline]
       free_pcp_prepare+0x208/0x4f0 mm/page_alloc.c:1198
       free_unref_page_prepare mm/page_alloc.c:3011 [inline]
       free_unref_page+0x11/0x180 mm/page_alloc.c:3060
       free_the_page mm/page_alloc.c:4791 [inline]
       __free_pages mm/page_alloc.c:4799 [inline]
       __free_pages+0x72/0xb0 mm/page_alloc.c:4796
       __vunmap+0x610/0x950 mm/vmalloc.c:2315
       __vfree+0x41/0xd0 mm/vmalloc.c:2363
       vfree+0x5f/0x90 mm/vmalloc.c:2393
       __do_replace+0x176/0x940 net/ipv4/netfilter/ip_tables.c:1100
       do_replace net/ipv4/netfilter/ip_tables.c:1140 [inline]
       do_ipt_set_ctl+0x33a/0x4c2 net/ipv4/netfilter/ip_tables.c:1672
       nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
       nf_setsockopt+0x77/0xd0 net/netfilter/nf_sockopt.c:115
       ip_setsockopt net/ipv4/ip_sockglue.c:1260 [inline]
       ip_setsockopt+0xdf/0x100 net/ipv4/ip_sockglue.c:1240
       udp_setsockopt+0x68/0xb0 net/ipv4/udp.c:2640
       ipv6_setsockopt+0xbf/0x180 net/ipv6/ipv6_sockglue.c:939
       tcp_setsockopt net/ipv4/tcp.c:3165 [inline]
       tcp_setsockopt+0x8f/0xe0 net/ipv4/tcp.c:3159
       sock_common_setsockopt+0x94/0xd0 net/core/sock.c:3149
       __sys_setsockopt+0x261/0x4c0 net/socket.c:2130
       __do_sys_setsockopt net/socket.c:2146 [inline]
       __se_sys_setsockopt net/socket.c:2143 [inline]
       __x64_sys_setsockopt+0xbe/0x150 net/socket.c:2143
       do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
       entry_SYSCALL_64_after_hwframe+0x49/0xbe

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 syz-executor281/12206:
 #0: ffffc90000007d50 ((&wq_watchdog_timer)){+.-.}, at: lockdep_copy_map include/linux/lockdep.h:172 [inline]
 #0: ffffc90000007d50 ((&wq_watchdog_timer)){+.-.}, at: call_timer_fn+0xe0/0x780 kernel/time/timer.c:1394
 #1: ffffffff89bac240 (rcu_read_lock){....}, at: show_workqueue_state+0x0/0x120 kernel/workqueue.c:4638
 #2: ffff8880ae936d58 (&(&pool->lock)->rlock){-.-.}, at: show_workqueue_state kernel/workqueue.c:4767 [inline]
 #2: ffff8880ae936d58 (&(&pool->lock)->rlock){-.-.}, at: show_workqueue_state.cold+0x156/0x802 kernel/workqueue.c:4740
 #3: ffffffff89ba13c0 (console_lock){+.+.}, at: console_trylock_spinning kernel/printk/printk.c:1716 [inline]
 #3: ffffffff89ba13c0 (console_lock){+.+.}, at: vprintk_emit+0x283/0x700 kernel/printk/printk.c:1995

stack backtrace:
CPU: 0 PID: 12206 Comm: syz-executor281 Not tainted 5.6.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x197/0x210 lib/dump_stack.c:118
 print_circular_bug.isra.0.cold+0x163/0x172 kernel/locking/lockdep.c:1684
 check_noncircular+0x32e/0x3e0 kernel/locking/lockdep.c:1808
 check_prev_add kernel/locking/lockdep.c:2475 [inline]
 check_prevs_add kernel/locking/lockdep.c:2580 [inline]
 validate_chain kernel/locking/lockdep.c:2970 [inline]
 __lock_acquire+0x2596/0x4a00 kernel/locking/lockdep.c:3954
 lock_acquire+0x190/0x410 kernel/locking/lockdep.c:4484
 console_lock_spinning_enable kernel/printk/printk.c:1654 [inline]
 console_unlock+0x47f/0xf00 kernel/printk/printk.c:2470
 vprintk_emit+0x2a0/0x700 kernel/printk/printk.c:1996
 vprintk_default+0x28/0x30 kernel/printk/printk.c:2023
 vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:386
 printk+0xba/0xed kernel/printk/printk.c:2056
 show_pwq+0x154/0x7cb kernel/workqueue.c:4673
 show_workqueue_state kernel/workqueue.c:4769 [inline]
 show_workqueue_state.cold+0x1a6/0x802 kernel/workqueue.c:4740
 wq_watchdog_timer_fn+0x511/0x590 kernel/workqueue.c:5783
 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404
 expire_timers kernel/time/timer.c:1449 [inline]
 __run_timers kernel/time/timer.c:1773 [inline]
 __run_timers kernel/time/timer.c:1740 [inline]
 run_timer_softirq+0xdca/0x1790 kernel/time/timer.c:1788
 __do_softirq+0x262/0x98c kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x19b/0x1e0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:546 [inline]
 smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1146
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:752 [inline]
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x90/0xe0 kernel/locking/spinlock.c:191
Code: 48 c7 c0 b8 b0 b3 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 39 48 83 3d af 75 c4 01 00 74 24 48 89 df 57 9d <0f> 1f 44 00 00 bf 01 00 00 00 e8 71 99 61 f9 65 8b 05 62 e3 12 78
RSP: 0018:ffffc90001ef7878 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff1367617 RBX: 0000000000000282 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000006 RDI: 0000000000000282
RBP: ffffc90001ef7888 R08: ffff888097200500 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8bb0a848
R13: ffffffff8bb0a848 R14: ffff88800f7e3000 R15: 0000000000000000
 __debug_check_no_obj_freed lib/debugobjects.c:977 [inline]
 debug_check_no_obj_freed+0x20a/0x441 lib/debugobjects.c:998
 free_pages_prepare mm/page_alloc.c:1168 [inline]
 free_pcp_prepare+0x208/0x4f0 mm/page_alloc.c:1198
 free_unref_page_prepare mm/page_alloc.c:3011 [inline]
 free_unref_page+0x11/0x180 mm/page_alloc.c:3060
 free_the_page mm/page_alloc.c:4791 [inline]
 __free_pages mm/page_alloc.c:4799 [inline]
 __free_pages+0x72/0xb0 mm/page_alloc.c:4796
 __vunmap+0x610/0x950 mm/vmalloc.c:2315
 __vfree+0x41/0xd0 mm/vmalloc.c:2363
 vfree+0x5f/0x90 mm/vmalloc.c:2393
 __do_replace+0x176/0x940 net/ipv4/netfilter/ip_tables.c:1100
Lost 30 message(s)!
workqueue events_power_efficient: flags=0x80
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=5/256 refcnt=6
    in-flight: 2968:htable_gc
    pending: neigh_periodic_work, do_cache_clean, neigh_periodic_work, check_lifetime
workqueue mm_percpu_wq: flags=0x8
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: vmstat_update
workqueue dm_bufio_cache: flags=0x8
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: work_fn
workqueue ipv6_addrconf: flags=0x40008
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/1 refcnt=2
    pending: addrconf_verify_work
pool 2: cpus=1 node=0 flags=0x0 nice=0 hung=151s workers=2 idle: 2969

Crashes (8):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	Maintainers
ci-upstream-kasan-gce-selinux-root	2020/02/16 00:48	upstream	829e6944	5d7b90f1	.config	log	report	syz	C	linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, steffen.klassert@secunet.com
ci-upstream-kasan-gce-smack-root	2020/02/13 10:03	upstream	f2850dd5	84f4fc8a	.config	log	report	syz	C	linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, steffen.klassert@secunet.com
ci-upstream-kasan-gce	2020/02/13 06:50	upstream	f2850dd5	84f4fc8a	.config	log	report	syz	C	linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, steffen.klassert@secunet.com
ci-upstream-kasan-gce	2020/02/09 19:08	upstream	fdfa3a67	6ece2ea5	.config	log	report	syz	C	linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, steffen.klassert@secunet.com
ci-upstream-kasan-gce-root	2020/01/11 06:19	upstream	e69ec487	4de4e9f0	.config	log	report	syz	C	linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, steffen.klassert@secunet.com
ci-upstream-kasan-gce-root	2020/02/03 22:56	upstream	754beeec	93e5e335	.config	log	report			linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, steffen.klassert@secunet.com
ci-upstream-kasan-gce-smack-root	2020/01/20 05:02	upstream	8f8972a3	0342f8c7	.config	log	report			linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, steffen.klassert@secunet.com
ci-upstream-kasan-gce-root	2020/01/14 12:16	upstream	b3a987b0	32881205	.config	log	report			linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, steffen.klassert@secunet.com