INFO: task hung in prealloc_shrinker
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syzbot
Mar 4, 2020, 2:50:10 AM3/4/20
to syzkaller...@googlegroups.com
Hello,
syzbot found the following crash on:
HEAD commit: a083db76 Linux 4.19.107
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=12eb3ac3e00000
kernel config: https://syzkaller.appspot.com/x/.config?x=c32f76aaadd644de
dashboard link: https://syzkaller.appspot.com/bug?extid=8c888ac478f7b49ea052
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+8c888a...@syzkaller.appspotmail.com
netlink: 20 bytes leftover after parsing attributes in process `syz-executor.3'.
netlink: 20 bytes leftover after parsing attributes in process `syz-executor.1'.
INFO: task syz-executor.0:15163 blocked for more than 140 seconds.
Not tainted 4.19.107-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.0 D28512 15163 8089 0x00000004
Call Trace:
schedule+0x8d/0x1b0 kernel/sched/core.c:3559
__rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline]
rwsem_down_write_failed+0x774/0xc30 kernel/locking/rwsem-xadd.c:618
call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:117
__down_write arch/x86/include/asm/rwsem.h:142 [inline]
down_write+0x4f/0x90 kernel/locking/rwsem.c:72
prealloc_memcg_shrinker mm/vmscan.c:194 [inline]
prealloc_shrinker+0x16f/0x340 mm/vmscan.c:382
alloc_super fs/super.c:265 [inline]
sget_userns+0x773/0xcd0 fs/super.c:519
sget+0x10d/0x150 fs/super.c:570
mount_bdev+0xf8/0x3c0 fs/super.c:1131
mount_fs+0xa3/0x30c fs/super.c:1261
vfs_kern_mount.part.0+0x68/0x400 fs/namespace.c:961
vfs_kern_mount fs/namespace.c:951 [inline]
do_new_mount fs/namespace.c:2469 [inline]
do_mount+0x4f4/0x2a40 fs/namespace.c:2799
ksys_mount+0xd7/0x150 fs/namespace.c:3015
__do_sys_mount fs/namespace.c:3029 [inline]
__se_sys_mount fs/namespace.c:3026 [inline]
__x64_sys_mount+0xba/0x150 fs/namespace.c:3026
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45eeca
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 4d 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 2a 8c fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007f06e4cfda68 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f06e4cfe6d4 RCX: 000000000045eeca
RDX: 00007f06e4cfdae0 RSI: 00000000200000c0 RDI: 00007f06e4cfdb00
RBP: 000000000076bf20 R08: 00007f06e4cfdb40 R09: 00007f06e4cfdae0
R10: 0000000000000000 R11: 0000000000000202 R12: 00000000ffffffff
R13: 0000000000000be1 R14: 00000000004cdc2d R15: 000000000076bf2c
Showing all locks held in the system:
1 lock held by khungtaskd/1075:
#0: 000000005227c2f9 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4436
3 locks held by khugepaged/1087:
1 lock held by rsyslogd/7926:
#0: 0000000008ab73ae (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xe3/0x100 fs/file.c:767
2 locks held by getty/8049:
#0: 0000000029d59ee0 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272
#1: 00000000c88107eb (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1a50 drivers/tty/n_tty.c:2154
2 locks held by getty/8050:
#0: 000000003481fe79 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272
#1: 000000001a6a52da (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1a50 drivers/tty/n_tty.c:2154
2 locks held by getty/8051:
#0: 00000000718b1b05 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272
#1: 00000000e0d1b648 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1a50 drivers/tty/n_tty.c:2154
2 locks held by getty/8052:
#0: 0000000049e58dd8 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272
#1: 00000000e11e84d7 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1a50 drivers/tty/n_tty.c:2154
2 locks held by getty/8053:
#0: 0000000074fe34d8 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272
#1: 00000000a35c1cb9 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1a50 drivers/tty/n_tty.c:2154
2 locks held by getty/8054:
#0: 00000000ba07eb36 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272
#1: 000000000620fd35 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1a50 drivers/tty/n_tty.c:2154
2 locks held by getty/8055:
#0: 00000000df3e6ae0 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272
#1: 00000000569b80b3 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1a50 drivers/tty/n_tty.c:2154
3 locks held by kworker/u4:7/10021:
1 lock held by syz-executor.4/30045:
1 lock held by syz-executor.2/30284:
1 lock held by syz-executor.2/31205:
1 lock held by syz-executor.2/31220:
1 lock held by syz-executor.4/31221:
#0: 00000000ace05cf7 (&vcpu->mutex){+.+.}, at: kvm_vcpu_ioctl+0x175/0xe20 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2644
1 lock held by syz-executor.4/31691:
#0: 000000000c7562cd (&vcpu->mutex){+.+.}, at: kvm_vcpu_ioctl+0x175/0xe20 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2644
1 lock held by syz-executor.2/481:
1 lock held by syz-executor.1/1514:
#0: 00000000c7af6023 (&vcpu->mutex){+.+.}, at: kvm_vcpu_ioctl+0x175/0xe20 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2644
1 lock held by syz-executor.5/1534:
#0: 0000000064d8e3e7 (&vcpu->mutex){+.+.}, at: kvm_vcpu_ioctl+0x175/0xe20 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2644
1 lock held by syz-executor.5/1553:
#0: 00000000daf18830 (&vcpu->mutex){+.+.}, at: kvm_vcpu_ioctl+0x175/0xe20 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2644
3 locks held by syz-executor.0/15163:
#0: 00000000e1bf2ca3 (&bdev->bd_fsfreeze_mutex){+.+.}, at: mount_bdev+0x90/0x3c0 fs/super.c:1125
#1: 00000000781959e6 (&type->s_umount_key#63/1){+.+.}, at: alloc_super fs/super.c:226 [inline]
#1: 00000000781959e6 (&type->s_umount_key#63/1){+.+.}, at: sget_userns+0x1fc/0xcd0 fs/super.c:519
#2: 0000000076b87c88 (shrinker_rwsem){++++}, at: prealloc_memcg_shrinker mm/vmscan.c:194 [inline]
#2: 0000000076b87c88 (shrinker_rwsem){++++}, at: prealloc_shrinker+0x16f/0x340 mm/vmscan.c:382
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 1075 Comm: khungtaskd Not tainted 4.19.107-syzkaller #0
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+0x188/0x20d lib/dump_stack.c:118
nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x1a6/0x1eb lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline]
watchdog+0x962/0xe40 kernel/hung_task.c:287
kthread+0x34a/0x420 kernel/kthread.c:246
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 1553 Comm: syz-executor.5 Not tainted 4.19.107-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:lockdep_hardirqs_on+0x262/0x5d0 kernel/locking/lockdep.c:2880
Code: 03 8d 68 01 48 b8 00 00 00 00 00 fc ff df 89 ab 28 08 00 00 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 93 02 00 00 89 ab 40 08 00 00 <65> 48 8b 1c 25 40 ee 01 00 48 8d bb 7c 08 00 00 48 b8 00 00 00 00
RSP: 0018:ffff88805a8b75e8 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff888060c72400 RCX: 1ffff1100c18e594
RDX: 1ffff1100c18e588 RSI: ffff888060c72c80 RDI: ffff888060c72c40
RBP: 0000000001a9cde5 R08: ffff888060c72400 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS: 00007f24ec865700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c43d6f1b98 CR3: 0000000092298000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
trace_hardirqs_on_thunk+0x1a/0x1c
---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following crash on:
HEAD commit: a083db76 Linux 4.19.107
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=12eb3ac3e00000
kernel config: https://syzkaller.appspot.com/x/.config?x=c32f76aaadd644de
dashboard link: https://syzkaller.appspot.com/bug?extid=8c888ac478f7b49ea052
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+8c888a...@syzkaller.appspotmail.com
netlink: 20 bytes leftover after parsing attributes in process `syz-executor.3'.
netlink: 20 bytes leftover after parsing attributes in process `syz-executor.1'.
INFO: task syz-executor.0:15163 blocked for more than 140 seconds.
Not tainted 4.19.107-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.0 D28512 15163 8089 0x00000004
Call Trace:
schedule+0x8d/0x1b0 kernel/sched/core.c:3559
__rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline]
rwsem_down_write_failed+0x774/0xc30 kernel/locking/rwsem-xadd.c:618
call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:117
__down_write arch/x86/include/asm/rwsem.h:142 [inline]
down_write+0x4f/0x90 kernel/locking/rwsem.c:72
prealloc_memcg_shrinker mm/vmscan.c:194 [inline]
prealloc_shrinker+0x16f/0x340 mm/vmscan.c:382
alloc_super fs/super.c:265 [inline]
sget_userns+0x773/0xcd0 fs/super.c:519
sget+0x10d/0x150 fs/super.c:570
mount_bdev+0xf8/0x3c0 fs/super.c:1131
mount_fs+0xa3/0x30c fs/super.c:1261
vfs_kern_mount.part.0+0x68/0x400 fs/namespace.c:961
vfs_kern_mount fs/namespace.c:951 [inline]
do_new_mount fs/namespace.c:2469 [inline]
do_mount+0x4f4/0x2a40 fs/namespace.c:2799
ksys_mount+0xd7/0x150 fs/namespace.c:3015
__do_sys_mount fs/namespace.c:3029 [inline]
__se_sys_mount fs/namespace.c:3026 [inline]
__x64_sys_mount+0xba/0x150 fs/namespace.c:3026
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45eeca
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 4d 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 2a 8c fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007f06e4cfda68 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f06e4cfe6d4 RCX: 000000000045eeca
RDX: 00007f06e4cfdae0 RSI: 00000000200000c0 RDI: 00007f06e4cfdb00
RBP: 000000000076bf20 R08: 00007f06e4cfdb40 R09: 00007f06e4cfdae0
R10: 0000000000000000 R11: 0000000000000202 R12: 00000000ffffffff
R13: 0000000000000be1 R14: 00000000004cdc2d R15: 000000000076bf2c
Showing all locks held in the system:
1 lock held by khungtaskd/1075:
#0: 000000005227c2f9 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4436
3 locks held by khugepaged/1087:
1 lock held by rsyslogd/7926:
#0: 0000000008ab73ae (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xe3/0x100 fs/file.c:767
2 locks held by getty/8049:
#0: 0000000029d59ee0 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272
#1: 00000000c88107eb (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1a50 drivers/tty/n_tty.c:2154
2 locks held by getty/8050:
#0: 000000003481fe79 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272
#1: 000000001a6a52da (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1a50 drivers/tty/n_tty.c:2154
2 locks held by getty/8051:
#0: 00000000718b1b05 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272
#1: 00000000e0d1b648 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1a50 drivers/tty/n_tty.c:2154
2 locks held by getty/8052:
#0: 0000000049e58dd8 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272
#1: 00000000e11e84d7 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1a50 drivers/tty/n_tty.c:2154
2 locks held by getty/8053:
#0: 0000000074fe34d8 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272
#1: 00000000a35c1cb9 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1a50 drivers/tty/n_tty.c:2154
2 locks held by getty/8054:
#0: 00000000ba07eb36 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272
#1: 000000000620fd35 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1a50 drivers/tty/n_tty.c:2154
2 locks held by getty/8055:
#0: 00000000df3e6ae0 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272
#1: 00000000569b80b3 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1a50 drivers/tty/n_tty.c:2154
3 locks held by kworker/u4:7/10021:
1 lock held by syz-executor.4/30045:
1 lock held by syz-executor.2/30284:
1 lock held by syz-executor.2/31205:
1 lock held by syz-executor.2/31220:
1 lock held by syz-executor.4/31221:
#0: 00000000ace05cf7 (&vcpu->mutex){+.+.}, at: kvm_vcpu_ioctl+0x175/0xe20 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2644
1 lock held by syz-executor.4/31691:
#0: 000000000c7562cd (&vcpu->mutex){+.+.}, at: kvm_vcpu_ioctl+0x175/0xe20 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2644
1 lock held by syz-executor.2/481:
1 lock held by syz-executor.1/1514:
#0: 00000000c7af6023 (&vcpu->mutex){+.+.}, at: kvm_vcpu_ioctl+0x175/0xe20 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2644
1 lock held by syz-executor.5/1534:
#0: 0000000064d8e3e7 (&vcpu->mutex){+.+.}, at: kvm_vcpu_ioctl+0x175/0xe20 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2644
1 lock held by syz-executor.5/1553:
#0: 00000000daf18830 (&vcpu->mutex){+.+.}, at: kvm_vcpu_ioctl+0x175/0xe20 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2644
3 locks held by syz-executor.0/15163:
#0: 00000000e1bf2ca3 (&bdev->bd_fsfreeze_mutex){+.+.}, at: mount_bdev+0x90/0x3c0 fs/super.c:1125
#1: 00000000781959e6 (&type->s_umount_key#63/1){+.+.}, at: alloc_super fs/super.c:226 [inline]
#1: 00000000781959e6 (&type->s_umount_key#63/1){+.+.}, at: sget_userns+0x1fc/0xcd0 fs/super.c:519
#2: 0000000076b87c88 (shrinker_rwsem){++++}, at: prealloc_memcg_shrinker mm/vmscan.c:194 [inline]
#2: 0000000076b87c88 (shrinker_rwsem){++++}, at: prealloc_shrinker+0x16f/0x340 mm/vmscan.c:382
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 1075 Comm: khungtaskd Not tainted 4.19.107-syzkaller #0
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+0x188/0x20d lib/dump_stack.c:118
nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x1a6/0x1eb lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline]
watchdog+0x962/0xe40 kernel/hung_task.c:287
kthread+0x34a/0x420 kernel/kthread.c:246
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 1553 Comm: syz-executor.5 Not tainted 4.19.107-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:lockdep_hardirqs_on+0x262/0x5d0 kernel/locking/lockdep.c:2880
Code: 03 8d 68 01 48 b8 00 00 00 00 00 fc ff df 89 ab 28 08 00 00 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 93 02 00 00 89 ab 40 08 00 00 <65> 48 8b 1c 25 40 ee 01 00 48 8d bb 7c 08 00 00 48 b8 00 00 00 00
RSP: 0018:ffff88805a8b75e8 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff888060c72400 RCX: 1ffff1100c18e594
RDX: 1ffff1100c18e588 RSI: ffff888060c72c80 RDI: ffff888060c72c40
RBP: 0000000001a9cde5 R08: ffff888060c72400 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS: 00007f24ec865700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c43d6f1b98 CR3: 0000000092298000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
trace_hardirqs_on_thunk+0x1a/0x1c
---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot
Aug 25, 2020, 2:04:11 PM8/25/20
to syzkaller...@googlegroups.com
Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.
Crashes did not happen for a while, no reproducer and no activity.
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