syzbot


INFO: task hung in lru_add_drain_all_cpuslocked (2)

Status: auto-closed as invalid on 2019/12/28 09:27
Reported-by: syzbot+8507c3eb23efe4b50f62@syzkaller.appspotmail.com
First crash: 1754d, last: 1754d
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-414 INFO: task hung in lru_add_drain_all_cpuslocked 2 1963d 1892d 0/1 auto-closed as invalid on 2019/08/01 14:28

Sample crash report:
ip6_tunnel: 6 xmit: Local address not yet configured!
ip6_tunnel: w xmit: Local address not yet configured!
ip6_tunnel: ip6tnl1 xmit: Local address not yet configured!
ip6_tunnel: Q xmit: Local address not yet configured!
ip6_tunnel: 8 xmit: Local address not yet configured!
INFO: task syz-executor.0:31685 blocked for more than 140 seconds.
ip6_tunnel: ^ xmit: Local address not yet configured!
      Not tainted 4.14.140+ #39
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.0  D27760 31685   5199 0x00000004
Call Trace:
 schedule+0x92/0x1c0 kernel/sched/core.c:3498
 schedule_timeout+0x752/0xe90 kernel/time/timer.c:1721
 do_wait_for_common kernel/sched/completion.c:91 [inline]
 __wait_for_common kernel/sched/completion.c:112 [inline]
 wait_for_common+0x29c/0x470 kernel/sched/completion.c:123
 flush_work+0x3e2/0x720 kernel/workqueue.c:2908
 lru_add_drain_all_cpuslocked mm/swap.c:722 [inline]
 lru_add_drain_all_cpuslocked+0x2d5/0x420 mm/swap.c:691
 lru_add_drain_all+0xf/0x20 mm/swap.c:730
 do_mlock+0x90/0x5d0 mm/mlock.c:673
 SYSC_mlock2 mm/mlock.c:726 [inline]
 SyS_mlock2+0x49/0x70 mm/mlock.c:716
 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x459879
RSP: 002b:00007f6fd299cc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000145
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459879
RDX: 0000000000000000 RSI: 0000000000004000 RDI: 0000000020000000
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f6fd299d6d4
R13: 00000000004c5d6b R14: 00000000004da7e0 R15: 00000000ffffffff
INFO: task syz-executor.0:31706 blocked for more than 140 seconds.
      Not tainted 4.14.140+ #39
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.0  D29712 31706   5199 0x00000004
Call Trace:
 schedule+0x92/0x1c0 kernel/sched/core.c:3498
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3556
 __mutex_lock_common kernel/locking/mutex.c:833 [inline]
 __mutex_lock+0x595/0x13e0 kernel/locking/mutex.c:893
 lru_add_drain_all_cpuslocked+0x6c/0x420 mm/swap.c:704
 lru_add_drain_all+0xf/0x20 mm/swap.c:730
 do_mlock+0x90/0x5d0 mm/mlock.c:673
 SYSC_mlock2 mm/mlock.c:726 [inline]
 SyS_mlock2+0x49/0x70 mm/mlock.c:716
 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x459879
RSP: 002b:00007f6fd295ac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000145
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459879
RDX: 0000000000000000 RSI: 0000000000004000 RDI: 0000000020000000
RBP: 000000000075c070 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f6fd295b6d4
R13: 00000000004c5d6b R14: 00000000004da7e0 R15: 00000000ffffffff
INFO: task syz-executor.1:31720 blocked for more than 140 seconds.
      Not tainted 4.14.140+ #39
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.1  D30568 31720   1850 0x00000004
Call Trace:
 schedule+0x92/0x1c0 kernel/sched/core.c:3498
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3556
 __mutex_lock_common kernel/locking/mutex.c:833 [inline]
 __mutex_lock+0x595/0x13e0 kernel/locking/mutex.c:893
 lru_add_drain_all_cpuslocked+0x6c/0x420 mm/swap.c:704
 lru_add_drain_all+0xf/0x20 mm/swap.c:730
 SYSC_mlockall mm/mlock.c:802 [inline]
 SyS_mlockall+0x1e1/0x520 mm/mlock.c:790
 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x459879
RSP: 002b:00007f252f2aac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000097
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000459879
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000007
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f252f2ab6d4
R13: 00000000004c5d72 R14: 00000000004da7f8 R15: 00000000ffffffff
INFO: task syz-executor.1:31723 blocked for more than 140 seconds.
      Not tainted 4.14.140+ #39
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.1  D27712 31723   1850 0x00000004
Call Trace:
 schedule+0x92/0x1c0 kernel/sched/core.c:3498
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3556
 __mutex_lock_common kernel/locking/mutex.c:833 [inline]
 __mutex_lock+0x595/0x13e0 kernel/locking/mutex.c:893
 lru_add_drain_all_cpuslocked+0x6c/0x420 mm/swap.c:704
 lru_add_drain_all+0xf/0x20 mm/swap.c:730
 SYSC_mlockall mm/mlock.c:802 [inline]
 SyS_mlockall+0x1e1/0x520 mm/mlock.c:790
 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x459879
RSP: 002b:00007f252f289c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000097
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000459879
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000007
RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f252f28a6d4
R13: 00000000004c5d72 R14: 00000000004da7f8 R15: 00000000ffffffff

Showing all locks held in the system:
1 lock held by khungtaskd/23:
 #0:  (tasklist_lock){.+.+}, at: [<000000006a1702af>] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4541
3 locks held by kworker/1:1/65:
 #0:  ("%s"("ipv6_addrconf")){+.+.}, at: [<00000000266b48ef>] process_one_work+0x6ff/0x1580 kernel/workqueue.c:2105
 #1:  ((addr_chk_work).work){+.+.}, at: [<000000003b09e38c>] process_one_work+0x735/0x1580 kernel/workqueue.c:2109
 #2:  (rtnl_mutex){+.+.}, at: [<0000000066b262bd>] addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4431
2 locks held by getty/1754:
 #0:  (&tty->ldisc_sem){++++}, at: [<00000000323c7d5e>] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:284
 #1:  (&ldata->atomic_read_lock){+.+.}, at: [<0000000054e86581>] n_tty_read+0x1f7/0x1700 drivers/tty/n_tty.c:2156
2 locks held by syz-executor.1/4616:
 #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] inode_lock include/linux/fs.h:718 [inline]
 #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] __sock_release+0x86/0x2c0 net/socket.c:601
 #1:  (rtnl_mutex){+.+.}, at: [<000000005f853a73>] raw_close+0xe/0x30 net/ipv4/raw.c:699
2 locks held by syz-executor.1/4659:
 #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] inode_lock include/linux/fs.h:718 [inline]
 #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] __sock_release+0x86/0x2c0 net/socket.c:601
 #1:  (rtnl_mutex){+.+.}, at: [<000000005f853a73>] raw_close+0xe/0x30 net/ipv4/raw.c:699
1 lock held by syz-executor.1/10552:
 #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] inode_lock include/linux/fs.h:718 [inline]
 #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] __sock_release+0x86/0x2c0 net/socket.c:601
1 lock held by syz-executor.1/18640:
 #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] inode_lock include/linux/fs.h:718 [inline]
 #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] __sock_release+0x86/0x2c0 net/socket.c:601
3 locks held by kworker/1:5/25408:
 #0:  ("events"){+.+.}, at: [<00000000266b48ef>] process_one_work+0x6ff/0x1580 kernel/workqueue.c:2105
 #1:  ((linkwatch_work).work){+.+.}, at: [<000000003b09e38c>] process_one_work+0x735/0x1580 kernel/workqueue.c:2109
 #2:  (rtnl_mutex){+.+.}, at: [<00000000ae7de0af>] linkwatch_event+0xa/0x50 net/core/link_watch.c:236
1 lock held by syz-executor.1/28502:
 #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] inode_lock include/linux/fs.h:718 [inline]
 #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] __sock_release+0x86/0x2c0 net/socket.c:601
2 locks held by syz-executor.1/29184:
 #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] inode_lock include/linux/fs.h:718 [inline]
 #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] __sock_release+0x86/0x2c0 net/socket.c:601
 #1:  (rtnl_mutex){+.+.}, at: [<000000005f853a73>] raw_close+0xe/0x30 net/ipv4/raw.c:699
2 locks held by kworker/u4:4/30416:
 #0:  ("events_unbound"){+.+.}, at: [<00000000266b48ef>] process_one_work+0x6ff/0x1580 kernel/workqueue.c:2105
 #1:  (connector_reaper_work){+.+.}, at: [<000000003b09e38c>] process_one_work+0x735/0x1580 kernel/workqueue.c:2109
1 lock held by syz-executor.1/400:
 #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] inode_lock include/linux/fs.h:718 [inline]
 #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] __sock_release+0x86/0x2c0 net/socket.c:601
1 lock held by syz-executor.1/437:
 #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] inode_lock include/linux/fs.h:718 [inline]
 #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] __sock_release+0x86/0x2c0 net/socket.c:601
2 locks held by syz-executor.0/8645:
 #0:  (rtnl_mutex){+.+.}, at: [<000000009eba00ec>] tun_detach drivers/net/tun.c:585 [inline]
 #0:  (rtnl_mutex){+.+.}, at: [<000000009eba00ec>] tun_chr_close+0x34/0x60 drivers/net/tun.c:2654
 #1:  (rcu_preempt_state.exp_mutex){+.+.}, at: [<00000000ac9b533c>] exp_funnel_lock kernel/rcu/tree_exp.h:305 [inline]
 #1:  (rcu_preempt_state.exp_mutex){+.+.}, at: [<00000000ac9b533c>] _synchronize_rcu_expedited+0x377/0x840 kernel/rcu/tree_exp.h:596
1 lock held by syz-executor.1/9025:
 #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] inode_lock include/linux/fs.h:718 [inline]
 #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] __sock_release+0x86/0x2c0 net/socket.c:601
1 lock held by syz-executor.1/12933:
 #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] inode_lock include/linux/fs.h:718 [inline]
 #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] __sock_release+0x86/0x2c0 net/socket.c:601
1 lock held by syz-executor.1/12935:
 #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] inode_lock include/linux/fs.h:718 [inline]
 #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] __sock_release+0x86/0x2c0 net/socket.c:601
2 locks held by syz-executor.0/15048:
 #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] inode_lock include/linux/fs.h:718 [inline]
 #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] __sock_release+0x86/0x2c0 net/socket.c:601
 #1:  (rtnl_mutex){+.+.}, at: [<000000005f853a73>] raw_close+0xe/0x30 net/ipv4/raw.c:699
1 lock held by syz-executor.0/15178:
 #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] inode_lock include/linux/fs.h:718 [inline]
 #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] __sock_release+0x86/0x2c0 net/socket.c:601
2 locks held by syz-executor.0/19373:
 #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] inode_lock include/linux/fs.h:718 [inline]
 #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] __sock_release+0x86/0x2c0 net/socket.c:601
 #1:  (rcu_preempt_state.exp_mutex){+.+.}, at: [<00000000ac9b533c>] exp_funnel_lock kernel/rcu/tree_exp.h:305 [inline]
 #1:  (rcu_preempt_state.exp_mutex){+.+.}, at: [<00000000ac9b533c>] _synchronize_rcu_expedited+0x377/0x840 kernel/rcu/tree_exp.h:596
1 lock held by syz-executor.1/19450:
 #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] inode_lock include/linux/fs.h:718 [inline]
 #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] __sock_release+0x86/0x2c0 net/socket.c:601
1 lock held by syz-executor.1/19456:
 #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] inode_lock include/linux/fs.h:718 [inline]
 #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] __sock_release+0x86/0x2c0 net/socket.c:601
2 locks held by kworker/u4:37/21634:
 #0:  ("events_unbound"){+.+.}, at: [<00000000266b48ef>] process_one_work+0x6ff/0x1580 kernel/workqueue.c:2105
 #1:  ((reaper_work).work){+.+.}, at: [<000000003b09e38c>] process_one_work+0x735/0x1580 kernel/workqueue.c:2109
2 locks held by syz-executor.0/31252:
 #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] inode_lock include/linux/fs.h:718 [inline]
 #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] __sock_release+0x86/0x2c0 net/socket.c:601
 #1:  (rtnl_mutex){+.+.}, at: [<000000005f853a73>] raw_close+0xe/0x30 net/ipv4/raw.c:699
2 locks held by syz-executor.0/31685:
 #0:  (cpu_hotplug_lock.rw_sem){++++}, at: [<000000004daaa149>] get_online_cpus include/linux/cpu.h:140 [inline]
 #0:  (cpu_hotplug_lock.rw_sem){++++}, at: [<000000004daaa149>] lru_add_drain_all+0xa/0x20 mm/swap.c:729
 #1:  (lock#4){+.+.}, at: [<00000000488ad7cd>] lru_add_drain_all_cpuslocked+0x6c/0x420 mm/swap.c:704
2 locks held by syz-executor.0/31706:
 #0:  (cpu_hotplug_lock.rw_sem){++++}, at: [<000000004daaa149>] get_online_cpus include/linux/cpu.h:140 [inline]
 #0:  (cpu_hotplug_lock.rw_sem){++++}, at: [<000000004daaa149>] lru_add_drain_all+0xa/0x20 mm/swap.c:729
 #1:  (lock#4){+.+.}, at: [<00000000488ad7cd>] lru_add_drain_all_cpuslocked+0x6c/0x420 mm/swap.c:704
2 locks held by syz-executor.1/31720:
 #0:  (cpu_hotplug_lock.rw_sem){++++}, at: [<000000004daaa149>] get_online_cpus include/linux/cpu.h:140 [inline]
 #0:  (cpu_hotplug_lock.rw_sem){++++}, at: [<000000004daaa149>] lru_add_drain_all+0xa/0x20 mm/swap.c:729
 #1:  (lock#4){+.+.}, at: [<00000000488ad7cd>] lru_add_drain_all_cpuslocked+0x6c/0x420 mm/swap.c:704
2 locks held by syz-executor.1/31723:
 #0:  (cpu_hotplug_lock.rw_sem){++++}, at: [<000000004daaa149>] get_online_cpus include/linux/cpu.h:140 [inline]
 #0:  (cpu_hotplug_lock.rw_sem){++++}, at: [<000000004daaa149>] lru_add_drain_all+0xa/0x20 mm/swap.c:729
 #1:  (lock#4){+.+.}, at: [<00000000488ad7cd>] lru_add_drain_all_cpuslocked+0x6c/0x420 mm/swap.c:704

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

NMI backtrace for cpu 1
CPU: 1 PID: 23 Comm: khungtaskd Not tainted 4.14.140+ #39
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0xca/0x134 lib/dump_stack.c:53
 nmi_cpu_backtrace.cold+0x47/0x86 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x119/0x147 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:140 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline]
 watchdog+0x629/0xbe0 kernel/hung_task.c:274
 kthread+0x31f/0x430 kernel/kthread.c:232
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:404
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 1624 Comm: rs:main Q:Reg Not tainted 4.14.140+ #39
task: 000000001697a225 task.stack: 000000008403222a
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:__need_fs_reclaim+0x8b/0x100 mm/page_alloc.c:3554
RSP: 0018:ffff8881d026f2c8 EFLAGS: 00000206
RAX: 0000000001408040 RBX: 0000000001408040 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000001408040 RDI: ffff8881d0a0af24
RBP: ffff8881d0a0af00 R08: 0000000000007190 R09: ffffed103ae844fa
R10: ffffed103ae844f9 R11: ffff8881d74227cf R12: 0000000001408040
R13: 0000000000000090 R14: ffffffff8e50eec7 R15: ffff8881cab5c8d8
FS:  00007f860322b700(0000) GS:ffff8881d7400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000256c290 CR3: 00000001d1628006 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 fs_reclaim_acquire+0x5/0x10 mm/page_alloc.c:3569
 slab_pre_alloc_hook mm/slab.h:417 [inline]
 slab_alloc_node mm/slub.c:2684 [inline]
 slab_alloc mm/slub.c:2766 [inline]
 __kmalloc+0x48/0x360 mm/slub.c:3800
 kmalloc include/linux/slab.h:493 [inline]
 kzalloc include/linux/slab.h:661 [inline]
 ext4_find_extent+0x717/0x980 fs/ext4/extents.c:900
 ext4_ext_map_blocks+0x1f9/0x4a40 fs/ext4/extents.c:4311
 ext4_map_blocks+0x7f4/0x1600 fs/ext4/inode.c:636
 mpage_map_one_extent fs/ext4/inode.c:2467 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2520 [inline]
 ext4_writepages+0x16ed/0x30a0 fs/ext4/inode.c:2891
 do_writepages+0xe5/0x280 mm/page-writeback.c:2348
 __filemap_fdatawrite_range+0x1a4/0x290 mm/filemap.c:347
 file_write_and_wait_range+0x84/0x100 mm/filemap.c:677
 __generic_file_fsync+0x70/0x190 fs/libfs.c:977
 ext4_sync_file+0x3ac/0x1250 fs/ext4/fsync.c:120
 vfs_fsync_range+0x106/0x260 fs/sync.c:196
 generic_write_sync include/linux/fs.h:2699 [inline]
 ext4_file_write_iter+0x883/0xdb0 fs/ext4/file.c:279
 call_write_iter include/linux/fs.h:1788 [inline]
 new_sync_write fs/read_write.c:471 [inline]
 __vfs_write+0x401/0x5a0 fs/read_write.c:484
 vfs_write+0x17f/0x4d0 fs/read_write.c:546
 SYSC_write fs/read_write.c:594 [inline]
 SyS_write+0x102/0x250 fs/read_write.c:586
 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x7f8604c8919d
RSP: 002b:00007f8603229f90 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000400 RCX: 00007f8604c8919d
RDX: 0000000000000400 RSI: 00000000024a1340 RDI: 0000000000000002
RBP: 00000000024a1340 R08: 302038312079614d R09: 2039303a32343a33
R10: 656c6c616b7a7973 R11: 0000000000000293 R12: 0000000000000000
R13: 00007f860322a410 R14: 00000000024d5ac0 R15: 00000000024a1140
Code: c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 75 89 d8 24 7f f6 45 26 04 0f 45 d8 f7 c3 00 00 40 00 74 4e <65> 48 8b 2c 25 c0 de 01 00 48 8d 7d 24 48 b8 00 00 00 00 00 fc 

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/08/30 09:26 android-4.14 987732fcbbe3 fd37b39e .config console log report ci-android-414-kasan-gce-root
* Struck through repros no longer work on HEAD.