syzbot


possible deadlock in vprintk_emit

Status: auto-closed as invalid on 2019/09/26 04:13
Reported-by: syzbot+0b6ea781fb7ba278728a@syzkaller.appspotmail.com
First crash: 1997d, last: 1913d
Similar bugs (4)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-414 possible deadlock in vprintk_emit (2) 1 1707d 1707d 0/1 auto-closed as invalid on 2020/02/18 18:06
upstream possible deadlock in vprintk_emit serial C 1433 1609d 2208d 0/27 closed as dup on 2018/06/08 07:50
linux-4.14 possible deadlock in vprintk_emit C inconclusive 280 1487d 1896d 0/1 upstream: reported C repro on 2019/04/16 05:43
linux-4.19 possible deadlock in vprintk_emit C error 172 1005d 1900d 0/1 upstream: reported C repro on 2019/04/11 22:47

Sample crash report:
  cache: kmalloc-4096, object size: 4096, buffer size: 4352, default order: 3, min order: 1
[ 2562]     0  2562    18179    12843      33       4        0          1000 syz-executor.2
  kmalloc-4096 debugging increased min order, use slub_debug=O to disable.
  node 0: slabs: 1999, objs: 5767, free: 0
======================================================
WARNING: possible circular locking dependency detected
4.14.108+ #43 Not tainted
------------------------------------------------------
syz-executor.4/14655 is trying to acquire lock:
 (console_owner){-.-.}, at: [<000000009ceb518d>] console_trylock_spinning kernel/printk/printk.c:1652 [inline]
 (console_owner){-.-.}, at: [<000000009ceb518d>] vprintk_emit+0x1b8/0x330 kernel/printk/printk.c:1916

but task is already holding lock:
 (&(&port->lock)->rlock){-.-.}, at: [<0000000088c88c63>] pty_write+0xdb/0x1c0 drivers/tty/pty.c:119

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #2 (&(&port->lock)->rlock){-.-.}:

-> #1 (&port_lock_key){-.-.}:

-> #0 (console_owner){-.-.}:

other info that might help us debug this:

Chain exists of:
  console_owner --> &port_lock_key --> &(&port->lock)->rlock

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&(&port->lock)->rlock);
                               lock(&port_lock_key);
                               lock(&(&port->lock)->rlock);
  lock(console_owner);

 *** DEADLOCK ***

5 locks held by syz-executor.4/14655:
 #0:  (&tty->ldisc_sem){++++}, at: [<00000000cf8d4e35>] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:275
 #1:  (&tty->atomic_write_lock){+.+.}, at: [<000000005b4e36f2>] tty_write_lock+0x1d/0x60 drivers/tty/tty_io.c:883
 #2:  (&tty->termios_rwsem){++++}, at: [<00000000e3c90220>] n_tty_write+0x19a/0xe30 drivers/tty/n_tty.c:2316
 #3:  (&ldata->output_lock){+.+.}, at: [<00000000c20ef7c8>] n_tty_write+0x8bc/0xe30 drivers/tty/n_tty.c:2355
 #4:  (&(&port->lock)->rlock){-.-.}, at: [<0000000088c88c63>] pty_write+0xdb/0x1c0 drivers/tty/pty.c:119

stack backtrace:
CPU: 0 PID: 14655 Comm: syz-executor.4 Not tainted 4.14.108+ #43
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0xb9/0x10e lib/dump_stack.c:53
 print_circular_bug.isra.0.cold+0x2dc/0x425 kernel/locking/lockdep.c:1258
syz-executor.4: 
[ 2591]     0  2591    18179    12843      33       4        0          1000 syz-executor.2
page allocation failure: order:1
[ 2621]     0  2621    18179    12843      33       4        0          1000 syz-executor.2
, mode:0x1084020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
CPU: 0 PID: 14655 Comm: syz-executor.4 Not tainted 4.14.108+ #43
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0xb9/0x10e lib/dump_stack.c:53
[ 2650]     0  2650    18179    12843      33       4        0          1000 syz-executor.2
 warn_alloc.cold+0x91/0x1ab mm/page_alloc.c:3261
[ 2670]     0  2670    18179    12843      33       4        0          1000 syz-executor.2
[ 2697]     0  2697    18179    12843      33       4        0          1000 syz-executor.2
[ 2745]     0  2745    18179    12843      33       4        0          1000 syz-executor.2
[ 2766]     0  2766    18179    12843      33       4        0          1000 syz-executor.2
[ 2785]     0  2785    18179    12843      33       4        0          1000 syz-executor.2
[ 2809]     0  2809    18179    12843      33       4        0          1000 syz-executor.2
[ 2828]     0  2828    18179    12843      33       4        0          1000 syz-executor.2
[ 2844]     0  2844    18179    12843      33       4        0          1000 syz-executor.2
[ 2868]     0  2868    18179    12843      33       4        0          1000 syz-executor.2
[ 2891]     0  2891    18179    12843      33       4        0          1000 syz-executor.2
[ 2909]     0  2909    18179    12843      33       4        0          1000 syz-executor.2
[ 2947]     0  2947    18179    12843      33       4        0          1000 syz-executor.2
[ 2970]     0  2970    18179    12843      33       4        0          1000 syz-executor.2
[ 2982]     0  2982    18179    12843      33       4        0          1000 syz-executor.2
[ 3026]     0  3026    18179    12843      33       4        0          1000 syz-executor.2
[ 3049]     0  3049    18179    12843      33       4        0          1000 syz-executor.2
[ 3072]     0  3072    18179    12843      33       4        0          1000 syz-executor.2
[ 3084]     0  3084    18179    12843      33       4        0          1000 syz-executor.2
[ 3104]     0  3104    18179    12843      33       4        0          1000 syz-executor.2
SLUB: Unable to allocate memory on node -1, gfp=0x1080020(GFP_ATOMIC)
[ 3127]     0  3127    18179    12843      33       4        0          1000 syz-executor.2
  cache: kmalloc-4096, object size: 4096, buffer size: 4352, default order: 3, min order: 1
[ 3150]     0  3150    18179    12843      33       4        0          1000 syz-executor.2
  kmalloc-4096 debugging increased min order, use slub_debug=O to disable.
[ 3162]     0  3162    18179    12843      33       4        0          1000 syz-executor.2
  node 0: slabs: 1999, objs: 5767, free: 0
[ 3182]     0  3182    18179    12843      33       4        0          1000 syz-executor.2
syz-executor.4: 
[ 3205]     0  3205    18179    12843      33       4        0          1000 syz-executor.2
page allocation failure: order:1, mode:0x1084020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
CPU: 0 PID: 14655 Comm: syz-executor.4 Not tainted 4.14.108+ #43
Call Trace:
[ 3228]     0  3228    18179    12843      33       4        0          1000 syz-executor.2
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0xb9/0x10e lib/dump_stack.c:53
 warn_alloc.cold+0x91/0x1ab mm/page_alloc.c:3261
[ 3240]     0  3240    18179    12843      33       4        0          1000 syz-executor.2
[ 3260]     0  3260    18179    12843      33       4        0          1000 syz-executor.2
[ 3283]     0  3283    18179    12843      33       4        0          1000 syz-executor.2
[ 3306]     0  3306    18179    12843      33       4        0          1000 syz-executor.2
[ 3315]     0  3315    18179    12843      33       4        0          1000 syz-executor.2
[ 3338]     0  3338    18179    12843      33       4        0          1000 syz-executor.2
[ 3353]     0  3353    18179    12843      33       4        0          1000 syz-executor.2
[ 3370]     0  3370    18179    12843      33       4        0          1000 syz-executor.2
[ 3393]     0  3393    18179    12843      33       4        0          1000 syz-executor.2
[ 3413]     0  3413    18179    12843      33       4        0          1000 syz-executor.2
[ 3458]     0  3458    18179    12843      33       4        0          1000 syz-executor.2
[ 3493]     0  3493    18179    12843      33       4        0          1000 syz-executor.2
[ 3512]     0  3512    18179    12843      33       4        0          1000 syz-executor.2
[ 3543]     0  3543    18179    12843      33       4        0          1000 syz-executor.2
[ 3568]     0  3568    18179    12843      33       4        0          1000 syz-executor.2
[ 3593]     0  3593    18179    12843      33       4        0          1000 syz-executor.2
[ 3621]     0  3621    18113     8746      27       4        0          1000 syz-executor.2
[ 3627]     0  3627    18179    12843      33       4        0          1000 syz-executor.2
[ 3642]     0  3642    18179    12843      33       4        0          1000 syz-executor.2
[ 3664]     0  3664    18179    12843      33       4        0          1000 syz-executor.2
SLUB: Unable to allocate memory on node -1, gfp=0x1080020(GFP_ATOMIC)
[ 3689]     0  3689    18179    12843      33       4        0          1000 syz-executor.2
  cache: kmalloc-4096, object size: 4096, buffer size: 4352, default order: 3, min order: 1
[ 3706]     0  3706    18179    12843      33       4        0          1000 syz-executor.2
  kmalloc-4096 debugging increased min order, use slub_debug=O to disable.
[ 3752]     0  3752    18179    12843      33       4        0          1000 syz-executor.2
  node 0: slabs: 1999, objs: 5767, free: 0
[ 3781]     0  3781    18179    12843      33       4        0          1000 syz-executor.2
[ 3806]     0  3806    18179    12843      33       4        0          1000 syz-executor.2
[ 3820]     0  3820    18179    12843      33       4        0          1000 syz-executor.2
[ 3842]     0  3842    18179    12843      33       4        0          1000 syz-executor.2
[ 3861]     0  3861    18179    12843      33       4        0          1000 syz-executor.2
[ 3885]     0  3885    18179    12843      33       4        0          1000 syz-executor.2
[ 3904]     0  3904    18179    12843      33       4        0          1000 syz-executor.2
[ 3928]     0  3928    18179    12843      33       4        0          1000 syz-executor.2
[ 3950]     0  3950    18113     8747      27       4        0          1000 syz-executor.2
[ 3955]     0  3955    18113     8746      27       4        0          1000 syz-executor.2
[ 3962]     0  3962    18179    12843      33       4        0          1000 syz-executor.2
[ 3983]     0  3983    18113     8714      26       3        0          1000 syz-executor.2
[ 4007]     0  4007    18113     8714      26       3        0          1000 syz-executor.2
[ 4031]     0  4031    18113     8714      26       3        0          1000 syz-executor.2
[ 4082]     0  4082    18179    12843      33       4        0          1000 syz-executor.2
[ 4102]     0  4102    18179    12843      33       4        0          1000 syz-executor.2
[ 4122]     0  4122    18179    12843      33       4        0          1000 syz-executor.2
[ 4145]     0  4145    18179    12843      33       4        0          1000 syz-executor.2
[ 4162]     0  4162    18179    12843      33       4        0          1000 syz-executor.2
[ 4177]     0  4177    18146     8748      27       4        0          1000 syz-executor.2
[ 4199]     0  4199    18146     8748      27       4        0          1000 syz-executor.2
[ 4221]     0  4221    18146     8748      27       4        0          1000 syz-executor.2
[ 4243]     0  4243    18179    12843      33       4        0          1000 syz-executor.2
[ 4266]     0  4266    18179    12843      33       4        0          1000 syz-executor.2
[ 4278]     0  4278    18179    12843      33       4        0          1000 syz-executor.2
[ 4298]     0  4298    18179    12843      33       4        0          1000 syz-executor.2
[ 4321]     0  4321    18179    12843      33       4        0          1000 syz-executor.2
[ 4337]     0  4337    18179    12843      33       4        0          1000 syz-executor.2
[ 4353]     0  4353    18179    12843      33       4        0          1000 syz-executor.2
[ 4376]     0  4376    18179    12843      33       4        0          1000 syz-executor.2
[ 4393]     0  4393    18179    12843      33       4        0          1000 syz-executor.2
[ 4408]     0  4408    18146     8748      27       4        0          1000 syz-executor.2
[ 4430]     0  4430    18146     8748      27       4        0          1000 syz-executor.2
[ 4452]     0  4452    18146     8748      27       4        0          1000 syz-executor.2
[ 4474]     0  4474    18146     8748      27       4        0          1000 syz-executor.2
[ 4510]     0  4510    18146     8748      27       4        0          1000 syz-executor.2
[ 4534]     0  4534    18146     8748      27       4        0          1000 syz-executor.2
[ 4569]     0  4569    18146     8748      27       4        0          1000 syz-executor.2
[ 4600]     0  4600    18146     8748      27       4        0          1000 syz-executor.2
[ 4632]     0  4632    18146     8748      27       4        0          1000 syz-executor.2
[ 4665]     0  4665    18146     8748      27       4        0          1000 syz-executor.2
[ 4698]     0  4698    18113     8746      27       4        0          1000 syz-executor.2
[ 4710]     0  4710    18146     8748      27       4        0          1000 syz-executor.2
[ 4748]     0  4748    18146     8748      27       4        0          1000 syz-executor.2
[ 4774]     0  4774    18146     8748      27       4        0          1000 syz-executor.2
[ 4798]     0  4798    18146     8748      27       4        0          1000 syz-executor.2
[ 4834]     0  4834    18113     8747      27       4        0          1000 syz-executor.2
[ 4845]     0  4845    18113     8747      27       4        0          1000 syz-executor.2
[ 4861]     0  4861    18113     8746      27       4        0          1000 syz-executor.2
[ 4869]     0  4869    18179    12843      33       4        0          1000 syz-executor.2
[ 4888]     0  4888    18179    12843      33       4        0          1000 syz-executor.2
[ 4913]     0  4913    18179    12843      33       4        0          1000 syz-executor.2
[ 4933]     0  4933    18179    12843      33       4        0          1000 syz-executor.2
[ 4954]     0  4954    18179    12843      33       4        0          1000 syz-executor.2
[ 4976]     0  4976    18212    12845      33       4        0          1000 syz-executor.2
[ 5002]     0  5002    18146     8748      27       4        0          1000 syz-executor.2
[ 5026]     0  5026    18146     8748      27       4        0          1000 syz-executor.2
[ 5050]     0  5050    18146     8748      27       4        0          1000 syz-executor.2
[ 5071]     0  5071    18179    12843      33       4        0          1000 syz-executor.2
[ 5086]     0  5086    18179    12843      33       4        0          1000 syz-executor.2
[ 5108]     0  5108    18179    12843      33       4        0          1000 syz-executor.2
[ 5136]     0  5136    18179    12843      33       4        0          1000 syz-executor.2
[ 5157]     0  5157    18179    12843      33       4        0          1000 syz-executor.2
[ 5189]     0  5189    18212    12845      33       4        0          1000 syz-executor.2
[ 5210]     0  5210    18179    12843      33       4        0          1000 syz-executor.2
[ 5227]     0  5227    18179    12843      33       4        0          1000 syz-executor.2
[ 5248]     0  5248    18179    12843      33       4        0          1000 syz-executor.2
[ 5268]     0  5268    18179    12843      33       4        0          1000 syz-executor.2
[ 5285]     0  5285    18179    12843      33       4        0          1000 syz-executor.2
[ 5308]     0  5308    18179    12843      33       4        0          1000 syz-executor.2
[ 5332]     0  5332    18179    12843      33       4        0          1000 syz-executor.2
[ 5348]     0  5348    18179    12843      33       4        0          1000 syz-executor.2
[ 5373]     0  5373    18179    12843      33       4        0          1000 syz-executor.2
[ 5392]     0  5392    18179    12843      33       4        0          1000 syz-executor.2
[ 5414]     0  5414    18179    12843      33       4        0          1000 syz-executor.2
[ 5433]     0  5433    18179    12843      33       4        0          1000 syz-executor.2
[ 5451]     0  5451    18113     8750      27       4        0          1000 syz-executor.2
[ 5458]     0  5458    18113     8750      27       4        0          1000 syz-executor.2
[ 5468]     0  5468    18113     8750      27       4        0          1000 syz-executor.2
[ 5481]     0  5481    18179    12843      33       4        0          1000 syz-executor.2
[ 5495]     0  5495    18179    12843      33       4        0          1000 syz-executor.2
[ 5513]     0  5513    18179    12843      33       4        0          1000 syz-executor.2
[ 5536]     0  5536    18179    12843      33       4        0          1000 syz-executor.2
[ 5555]     0  5555    18179    12843      33       4        0          1000 syz-executor.2
[ 5573]     0  5573    18179    12843      33       4        0          1000 syz-executor.2
[ 5592]     0  5592    18179    12843      33       4        0          1000 syz-executor.2
[ 5614]     0  5614    18179    12843      33       4        0          1000 syz-executor.2
[ 5631]     0  5631    18179    12843      33       4        0          1000 syz-executor.2
[ 5651]     0  5651    18179    12843      33       4        0          1000 syz-executor.2
[ 5669]     0  5669    18179    12843      33       4        0          1000 syz-executor.2
[ 5692]     0  5692    18179    12843      33       4        0          1000 syz-executor.2
[ 5712]     0  5712    18179    12843      33       4        0          1000 syz-executor.2
[ 5733]     0  5733    18179    12843      33       4        0          1000 syz-executor.2
[ 5752]     0  5752    18179    12843      33       4        0          1000 syz-executor.2
[ 5771]     0  5771    18179    12843      33       4        0          1000 syz-executor.2
[ 5794]     0  5794    18179    12843      33       4        0          1000 syz-executor.2
[ 5817]     0  5817    18179    12843      33       4        0          1000 syz-executor.2
[ 5839]     0  5839    18179    12843      33       4        0          1000 syz-executor.2
[ 5857]     0  5857    18179    12843      33       4        0          1000 syz-executor.2
[ 5878]     0  5878    18179    12843      33       4        0          1000 syz-executor.2
[ 5898]     0  5898    18179    12843      33       4        0          1000 syz-executor.2
[ 5915]     0  5915    18179    12843      33       4        0          1000 syz-executor.2
[ 5935]     0  5935    18179    12843      33       4        0          1000 syz-executor.2
[ 5962]     0  5962    18179    12843      33       4        0          1000 syz-executor.2
[ 5990]     0  5990    18179    12843      33       4        0          1000 syz-executor.2
[ 6013]     0  6013    18179    12843      33       4        0          1000 syz-executor.2
[ 6033]     0  6033    18179    12843      33       4        0          1000 syz-executor.2
[ 6062]     0  6062    18179    12843      33       4        0          1000 syz-executor.2
[ 6084]     0  6084    18179    12843      33       4        0          1000 syz-executor.2
[ 6104]     0  6104    18179    12843      33       4        0          1000 syz-executor.2
[ 6127]     0  6127    18179    12843      33       4        0          1000 syz-executor.2
[ 6155]     0  6155    18179    12843      33       4        0          1000 syz-executor.2
[ 6172]     0  6172    18179    12843      33       4        0          1000 syz-executor.2
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[ 6215]     0  6215    18179    12843      33       4        0          1000 syz-executor.2
[ 6236]     0  6236    18179    12843      33       4        0          1000 syz-executor.2
[ 6253]     0  6253    18179    12843      33       4        0          1000 syz-executor.2
[ 6270]     0  6270    18179    12843      33       4        0          1000 syz-executor.2
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[ 6390]     0  6390    18179    12780      33       4        0          1000 syz-executor.2
[ 6427]     0  6427    18212    12734      33       4        0          1000 syz-executor.2
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[ 6517]     0  6517    18212    12845      33       4        0          1000 syz-executor.2
[ 6556]     0  6556    18179    12843      33       4        0          1000 syz-executor.2
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[ 6635]     0  6635    18179    12843      33       4        0          1000 syz-executor.2
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[ 6883]     0  6883    18179    12843      33       4        0          1000 syz-executor.2
[ 6900]     0  6900    18179    12843      33       4        0          1000 syz-executor.2
[ 6929]     0  6929    18179    12843      33       4        0          1000 syz-executor.2
[ 6952]     0  6952    18179    12843      33       4        0          1000 syz-executor.2
[ 6970]     0  6970    18179    12843      33       4        0          1000 syz-executor.2
[ 6991]     0  6991    18179    12843      33       4        0          1000 syz-executor.2
[ 7011]     0  7011    18146     8752      27       4        0          1000 syz-executor.2
[ 7031]     0  7031    18146     8752      27       4        0          1000 syz-executor.2
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[ 7185]     0  7185    18146     8758      27       4        0          1000 syz-executor.2
[ 7211]     0  7211    18146     8758      27       4        0          1000 syz-executor.2
[ 7229]     0  7229    18146     8758      27       4        0          1000 syz-executor.2
[ 7257]     0  7257    18146     8758      27       4        0          1000 syz-executor.2
[ 7281]     0  7281    18179    12843      33       4        0          1000 syz-executor.2
[ 7312]     0  7312    18179    12843      33       4        0          1000 syz-executor.2
[ 7330]     0  7330    18179    12843      33       4        0          1000 syz-executor.2
[ 7352]     0  7352    18179    12843      33       4        0          1000 syz-executor.2
[ 7373]     0  7373    18179    12843      33       4        0          1000 syz-executor.2
[ 7403]     0  7403    18179    12843      33       4        0          1000 syz-executor.2
[ 7425]     0  7425    18179    12843      33       4        0          1000 syz-executor.2
[ 7445]     0  7445    18179    12843      33       4        0          1000 syz-executor.2
[ 7465]     0  7465    18179    12843      33       4        0          1000 syz-executor.2
[ 7485]     0  7485    18179    12843      33       4        0          1000 syz-executor.2
[ 7506]     0  7506    18113     8746      27       4        0          1000 syz-executor.2
[ 7513]     0  7513    18179    12843      33       4        0          1000 syz-executor.2
[ 7540]     0  7540    18179    12843      33       4        0          1000 syz-executor.2
[ 7566]     0  7566    18179    12843      33       4        0          1000 syz-executor.2
[ 7591]     0  7591    18179    12843      33       4        0          1000 syz-executor.2
[ 7617]     0  7617    18212    12845      33       4        0          1000 syz-executor.2
[ 7639]     0  7639    18179    12843      33       4        0          1000 syz-executor.2
[ 7658]     0  7658    18179    12843      33       4        0          1000 syz-executor.2
[ 7675]     0  7675    18179    12843      33       4        0          1000 syz-executor.2
[ 7698]     0  7698    18212    12845      33       4        0          1000 syz-executor.2
[ 7719]     0  7719    18212    12845      33       4        0          1000 syz-executor.2
[ 7738]     0  7738    18179    12843      33       4        0          1000 syz-executor.2
[ 7755]     0  7755    18179    12843      33       4        0          1000 syz-executor.2
[ 7778]     0  7778    18179    12843      33       4        0          1000 syz-executor.2
[ 7801]     0  7801    18179    12843      33       4        0          1000 syz-executor.2
[ 7821]     0  7821    18179    12843      33       4        0          1000 syz-executor.2
[ 7835]     0  7835    18179    12843      33       4        0          1000 syz-executor.2
[ 7856]     0  7856    18179    12843      33       4        0          1000 syz-executor.2
[ 7884]     0  7884    18179    12843      33       4        0          1000 syz-executor.2
[ 7905]     0  7905    18179    12843      33       4        0          1000 syz-executor.2
[ 7920]     0  7920    18179    12843      33       4        0          1000 syz-executor.2
[ 7940]     0  7940    18212    12845      33       4        0          1000 syz-executor.2
[ 7964]     0  7964    18179    12843      33       4        0          1000 syz-executor.2
[ 7987]     0  7987    18179    12843      33       4        0          1000 syz-executor.2
[ 8007]     0  8007    18179    12843      33       4        0          1000 syz-executor.2
[ 8021]     0  8021    18179    12843      33       4        0          1000 syz-executor.2
[ 8042]     0  8042    18179    12843      33       4        0          1000 syz-executor.2
[ 8065]     0  8065    18179    12843      33       4        0          1000 syz-executor.2
[ 8088]     0  8088    18179    12843      33       4        0          1000 syz-executor.2
[ 8108]     0  8108    18179    12843      33       4        0          1000 syz-executor.2
[ 8120]     0  8120    18179    12843      33       4        0          1000 syz-executor.2
[ 8143]     0  8143    18212    12845      33       4        0          1000 syz-executor.2
[ 8173]     0  8173    18179    12843      33       4        0          1000 syz-executor.2
[ 8216]     0  8216    18179    12843      33       4        0          1000 syz-executor.2
[ 8251]     0  8251    18179    12843      33       4        0          1000 syz-executor.2
[ 8267]     0  8267    18179    12843      33       4        0          1000 syz-executor.2
[ 8285]     0  8285    18179    12843      33       4        0          1000 syz-executor.2
[ 8332]     0  8332    18113     8747      27       4        0          1000 syz-executor.2
[ 8339]     0  8339    18179    12843      33       4        0          1000 syz-executor.2
[ 8370]     0  8370    18212    12845      33       4        0          1000 syz-executor.2
[ 8412]     0  8412    18179    12843      33       4        0          1000 syz-executor.2
[ 8434]     0  8434    18113     8702      24       3        0          1000 syz-executor.0
[ 8440]     0  8440    18179    12843      33       4        0          1000 syz-executor.2
[ 8461]     0  8461    18113     8702      24       3        0          1000 syz-executor.0
[ 8462]     0  8462    18179    12843      33       4        0          1000 syz-executor.2
[ 8481]     0  8481    18179    12843      33       4        0          1000 syz-executor.2
[ 8497]     0  8497    18113     8702      24       3        0          1000 syz-executor.0
[ 8501]     0  8501    18179    12843      33       4        0          1000 syz-executor.2
[ 8529]     0  8529    18179    12843      33       4        0          1000 syz-executor.2
[ 8579]     0  8579    18179    12843      33       4        0          1000 syz-executor.2
[ 8606]     0  8606    18179    12843      33       4        0          1000 syz-executor.2
[ 8623]     0  8623    18212    12845      33       4        0          1000 syz-executor.2
[ 8670]     0  8670    18179    12843      33       4        0          1000 syz-executor.2
[ 8694]     0  8694    18179    12843      33       4        0          1000 syz-executor.2
[ 8724]     0  8724    18179    12843      33       4        0          1000 syz-executor.2
[ 8750]     0  8750    18179    12843      33       4        0          1000 syz-executor.2
[ 8767]     0  8767    18179    12843      33       4        0          1000 syz-executor.2
[ 8807]     0  8807    18179    12843      33       4        0          1000 syz-executor.2
[ 8836]     0  8836    18179    12843      33       4        0          1000 syz-executor.2
[ 8847]     0  8847    18179    12843      33       4        0          1000 syz-executor.2
[ 8868]     0  8868    18179    12843      33       4        0          1000 syz-executor.2
[ 8891]     0  8891    18179    12843      33       4        0          1000 syz-executor.2
[ 8914]     0  8914    18179    12843      33       4        0          1000 syz-executor.2
[ 8926]     0  8926    18179    12843      33       4        0          1000 syz-executor.2
[ 8946]     0  8946    18179    12843      33       4        0          1000 syz-executor.2
[ 8969]     0  8969    18179    12843      33       4        0          1000 syz-executor.2
[ 8992]     0  8992    18179    12843      33       4        0          1000 syz-executor.2
[ 9010]     0  9010    18179    12843      33       4        0          1000 syz-executor.2
[ 9032]     0  9032    18179    12843      33       4        0          1000 syz-executor.2
[ 9056]     0  9056    18179    12843      33       4        0          1000 syz-executor.2
[ 9079]     0  9079    18179    12843      33       4        0          1000 syz-executor.2
[ 9091]     0  9091    18179    12843      33       4        0          1000 syz-executor.2
[ 9111]     0  9111    18179    12843      33       4        0          1000 syz-executor.2
[ 9134]     0  9134    18179    12843      33       4        0          1000 syz-executor.2
[ 9166]     0  9166    18179    12843      33       4        0          1000 syz-executor.2
[ 9179]     0  9179    18179    12843      33       4        0          1000 syz-executor.2
[ 9200]     0  9200    18179    12843      33       4        0          1000 syz-executor.2
[ 9223]     0  9223    18179    12843      33       4        0          1000 syz-executor.2
[ 9246]     0  9246    18212    12845      33       4        0          1000 syz-executor.2
[ 9256]     0  9256    18179    12843      33       4        0          1000 syz-executor.2
[ 9279]     0  9279    18179    12843      33       4        0          1000 syz-executor.2
[ 9302]     0  9302    18179    12843      33       4        0          1000 syz-executor.2
[ 9313]     0  9313    18179    12843      33       4        0          1000 syz-executor.2
[ 9359]     0  9359    18179    11005      31       4        0          1000 syz-executor.2
[ 9390]     0  9390    18245    11089      31       4        0          1000 syz-executor.2
[ 9509]     0  9509    18212    11951      33       4        0          1000 syz-executor.2
[ 9536]     0  9536    18179    12843      33       4        0          1000 syz-executor.2
[ 9559]     0  9559    18278    12243      33       4        0          1000 syz-executor.2
[ 9749]     0  9749    18179    12843      33       4        0          1000 syz-executor.2
[ 9771]     0  9771    18212    11327      32       4        0          1000 syz-executor.2
[ 9858]     0  9858    18212    12079      33       4        0          1000 syz-executor.2
[12093]     0 12093    18212     8750      33       4        0          1000 syz-executor.2
[12117]     0 12117    18212     8750      33       4        0          1000 syz-executor.2
[12143]     0 12143    18212     8750      33       4        0          1000 syz-executor.2
[12311]     0 12311    18146     8746      33       4        0          1000 syz-executor.2
[12334]     0 12334    18146     8746      33       4        0          1000 syz-executor.2
[12354]     0 12354    18146     8746      33       4        0          1000 syz-executor.2
[12373]     0 12373    18113     8744      26       4        0          1000 syz-executor.2
[12459]     0 12459    18146     8746      33       4        0          1000 syz-executor.2
[12475]     0 12475    18146     8746      33       4        0          1000 syz-executor.2
[12514]     0 12514    18146     8746      33       4        0          1000 syz-executor.2
[12604]     0 12604    18212     8718      26       3        0          1000 syz-executor.2
[12630]     0 12630    18212     8718      27       3        0          1000 syz-executor.2
[12654]     0 12654    18212     8718      27       3        0          1000 syz-executor.2
[12676]     0 12676    18212     8750      33       4        0          1000 syz-executor.2
[12697]     0 12697    18212     8750      33       4        0          1000 syz-executor.2
[12757]     0 12757    18212     8750      33       4        0          1000 syz-executor.2
[12778]     0 12778    18212     8750      33       4        0          1000 syz-executor.2
[12793]     0 12793    18212     8750      33       4        0          1000 syz-executor.2
[12812]     0 12812    18212     8750      33       4        0          1000 syz-executor.2
[12830]     0 12830    18212     8750      33       4        0          1000 syz-executor.2
[13620]     0 13620    18146     8745      25       4        0          1000 syz-executor.4
[13628]     0 13628    18146     8745      25       4        0          1000 syz-executor.4
[13635]     0 13635    18146     8745      25       4        0          1000 syz-executor.4
[13640]     0 13640    18146     8745      25       4        0          1000 syz-executor.4
[13950]     0 13950    18146     8746      26       4        0          1000 syz-executor.2
[14399]     0 14399    18146     8745      27       4        0          1000 syz-executor.0
[15556]     0 15556    18146     8747      26       4        0          1000 /group.stat
[15578]     0 15578    18212     8750      26       4        0          1000 syz-executor.2
[15671]     0 15671    18212     8749      27       4        0          1000 /group.stat
[16585]     0 16585    18179     8735      26       4        0          1000 syz-executor.2
[16857]     0 16857    18113     8711      24       3        0          1000 syz-executor.2
[16871]     0 16871    18113     8711      24       3        0          1000 syz-executor.2
[18542]     0 18542    18113     8703      24       3        0          1000 syz-executor.2
[18543]     0 18543    18113     8711      24       3        0          1000 syz-executor.2
[19809]     0 19809    18113     8759      26       4        0          1000 syz-executor.2
[19816]     0 19816    18146     8745      25       4        0          1000 syz-executor.2
[19828]     0 19828    18113     8759      26       4        0          1000 syz-executor.2
[20202]     0 20202    18146     8745      25       4        0          1000 syz-executor.2
[20208]     0 20208    18113     8759      26       4        0          1000 syz-executor.2
[20264]     0 20264    18113     8759      26       4        0          1000 syz-executor.2
[20269]     0 20269    18113     8759      26       4        0          1000 syz-executor.2
[20275]     0 20275    18113     8759      26       4        0          1000 syz-executor.2
[20392]     0 20392    18146     8745      25       4        0          1000 syz-executor.2
[20393]     0 20393    18146     8745      25       4        0          1000 syz-executor.2
[20544]     0 20544    18113     8743      25       4        0          1000 syz-executor.2
[20548]     0 20548    18113     8743      25       4        0          1000 syz-executor.2
[20552]     0 20552    18113     8743      25       4        0          1000 syz-executor.2
[20557]     0 20557    18113     8759      26       4        0          1000 syz-executor.2
[20576]     0 20576    18113     8759      26       4        0          1000 syz-executor.2
[20583]     0 20583    18113     8703      24       3        0          1000 syz-executor.2
[20584]     0 20584    18113     8743      25       4        0          1000 syz-executor.2
[20588]     0 20588    18113     8703      24       3        0          1000 syz-executor.2
[20589]     0 20589    18113     8743      25       4        0          1000 syz-executor.2
[20593]     0 20593    18113     8703      24       3        0          1000 syz-executor.2
[20594]     0 20594    18113     8743      25       4        0          1000 syz-executor.2
[20599]     0 20599    18113     8712      24       3        0          1000 syz-executor.2
[20604]     0 20604    18113     8711      24       3        0          1000 syz-executor.2
[20609]     0 20609    18113     8711      24       3        0          1000 syz-executor.2
[20637]     0 20637    18113     8744      26       4        0          1000 syz-executor.2
[20643]     0 20643    18113     8744      26       4        0          1000 syz-executor.2
[20687]     0 20687    18146     8745      25       4        0          1000 syz-executor.2
[20711]     0 20711    18146     8745      25       4        0          1000 syz-executor.2
[20712]     0 20712    18146     8745      25       4        0          1000 syz-executor.2
[20733]     0 20733    18113     8759      26       4        0          1000 syz-executor.2
[20750]     0 20750    18113     8758      26       4        0          1000 syz-executor.2
[20759]     0 20759    18146     8745      25       4        0          1000 syz-executor.2
[20781]     0 20781    18146     8745      25       4        0          1000 syz-executor.2
[20805]     0 20805    18113     8759      26       4        0          1000 syz-executor.2
[20810]     0 20810    18146     8745      25       4        0          1000 syz-executor.2
[20817]     0 20817    18113     8759      26       4        0          1000 syz-executor.2
[20822]     0 20822    18113     8759      26       4        0          1000 syz-executor.2
[20960]     0 20960    18146     8737      25       4        0          1000 syz-executor.5
[21494]     0 21494    18113     8702      23       3        0          1000 syz-executor.4
[21506]     0 21506    18113     8702      23       3        0          1000 syz-executor.4
[21520]     0 21520    18113     8702      23       3        0          1000 syz-executor.4
[25291]     0 25291    18146     8760      27       4        0          1000 syz-executor.0
[25292]     0 25292    18146     8760      27       4        0          1000 syz-executor.0
[30098]     0 30098    18146     8745      27       4        0          1000 syz-executor.0
[30107]     0 30107    18179     8731      27       4        0          1000 syz-executor.0
[30150]     0 30150    18179     8731      27       4        0          1000 syz-executor.0
[30161]     0 30161    18146     8746      28       4        0          1000 syz-executor.0
[30166]     0 30166    18113     8744      27       4        0          1000 syz-executor.0
[30170]     0 30170    18113     8744      27       4        0          1000 syz-executor.0
[  971]     0   971    18179     8748      34       4        0          1000 syz-executor.0
[ 2105]     0  2105    18113     8703      24       3        0          1000 syz-executor.2
[ 2110]     0  2110    18113     8703      24       3        0          1000 syz-executor.2
[ 2116]     0  2116    18113     8703      24       3        0          1000 syz-executor.2
[ 4184]     0  4184    18146     8746      33       4        0          1000 syz-executor.2
[ 4198]     0  4198    18113     8702      24       3        0          1000 syz-executor.0
[ 4212]     0  4212    18179     8715      26       3        0          1000 syz-executor.0
[ 9615]     0  9615    18245     8752      26       4        0          1000 syz-executor.2
[11363]     0 11363    18278     8756      27       4        0          1000 syz-executor.5
[13634]     0 13634     5365      170      15       3        0         -1000 udevd
[13985]     0 13985     5365      170      15       3        0         -1000 udevd
[14013]     0 14013    18278    12845      34       4        0             0 syz-executor.1
[14017]     0 14017    18278     9849      28       4        0          1000 syz-executor.2
[14039]     0 14039    18278    12845      34       4        0             0 syz-executor.1
[14172]     0 14172    18245    12837      33       4        0          1000 syz-executor.2
[14194]     0 14194    18212    12835      33       4        0          1000 syz-executor.2
[14220]     0 14220     5365      170      15       3        0         -1000 udevd
[14295]     0 14295     5365      170      15       3        0         -1000 udevd
[14303]     0 14303     5365      170      15       3        0         -1000 udevd
[14512]     0 14512    18243     9638      27       4        0          1000 syz-executor.4
[14600]     0 14600     3649       43      12       3        0             0 getty
[14604]     0 14604     3649       43      13       3        0             0 getty
[14605]     0 14605     3649       42      13       3        0             0 getty
[14606]     0 14606     3649       44      13       3        0             0 getty
[14607]     0 14607     3649       43      12       3        0             0 getty
[14608]     0 14608     3649       43      13       3        0             0 getty
[14617]     0 14617    18177     9552      27       4        0          1000 syz-executor.4
[14645]     0 14645    18179    10277      29       4        0          1000 syz-executor.5
[14647]     0 14647    18179    10751      31       4        0          1000 syz-executor.0
[14649]     0 14649    18179    12190      33       4        0          1000 syz-executor.2
[14653]     0 14653    18146     8552      26       4        0          1000 syz-executor.4
[14656]     0 14656    18146     8552      26       4        0          1000 syz-executor.4
Out of memory: Kill process 4976 (syz-executor.2) score 1007 or sacrifice child
Killed process 4976 (syz-executor.2) total-vm:72848kB, anon-rss:16524kB, file-rss:34816kB, shmem-rss:40kB
oom_reaper: reaped process 4976 (syz-executor.2), now anon-rss:0kB, file-rss:0kB, shmem-rss:40kB
oom_reaper: reaped process 14647 (syz-executor.0), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB
syz-executor.3 invoked oom-killer: gfp_mask=0x15080c0(GFP_KERNEL_ACCOUNT|__GFP_ZERO), nodemask=(null),  order=3, oom_score_adj=0
CPU: 1 PID: 1852 Comm: syz-executor.3 Not tainted 4.14.108+ #43
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0xb9/0x10e lib/dump_stack.c:53
 dump_header+0x16f/0x775 mm/oom_kill.c:422
 oom_kill_process.cold+0x10/0xc4d mm/oom_kill.c:861
Mem-Info:
active_anon:1469170 inactive_anon:5068 isolated_anon:0
 active_file:158 inactive_file:156 isolated_file:0
 unevictable:0 dirty:3 writeback:12 unstable:0
 slab_reclaimable:8396 slab_unreclaimable:63801
 mapped:57014 shmem:9595 pagetables:17095 bounce:0
 free:9644 free_pcp:347 free_cma:0
Node 0 active_anon:5876680kB inactive_anon:20272kB active_file:152kB inactive_file:3956kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:230448kB dirty:12kB writeback:0kB shmem:38380kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
DMA32 free:26492kB min:4684kB low:7692kB high:10700kB active_anon:2878704kB inactive_anon:6752kB active_file:32kB inactive_file:32kB unevictable:0kB writepending:8kB present:3145324kB managed:3011908kB mlocked:0kB kernel_stack:7616kB pagetables:22184kB bounce:0kB free_pcp:112kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 3505 3505
Normal free:23852kB min:5584kB low:9172kB high:12760kB active_anon:2980840kB inactive_anon:13520kB active_file:1632kB inactive_file:4768kB unevictable:0kB writepending:4kB present:4718592kB managed:3589208kB mlocked:0kB kernel_stack:12672kB pagetables:46196kB bounce:0kB free_pcp:680kB local_pcp:48kB free_cma:0kB
lowmem_reserve[]: 0 0 0
DMA32: 1595*4kB (UMH) 833*8kB (UMH) 405*16kB (UMH) 34*32kB (UMH) 17*64kB (M) 13*128kB (M) 11*256kB (M) 7*512kB (M) 2*1024kB (M) 0*2048kB 0*4096kB = 31812kB
Normal: 3221*4kB (UMH) 1160*8kB (UME) 124*16kB (UME) 23*32kB (UM) 6*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 0*1024kB 0*2048kB 0*4096kB = 25652kB
12477 total pagecache pages
0 pages in swap cache
Swap cache stats: add 0, delete 0, find 0/0
Free swap  = 0kB
Total swap = 0kB
1965979 pages RAM
0 pages HighMem/MovableOnly
315700 pages reserved
[ pid ]   uid  tgid total_vm      rss nr_ptes nr_pmds swapents oom_score_adj name
[  190]     0   190     5366      169      16       3        0         -1000 udevd
[ 1490]     0  1490     2493      574       9       3        0             0 dhclient
[ 1621]     0  1621    30748      322      25       3        0             0 rsyslogd
[ 1664]     0  1664     4725       52      15       3        0             0 cron
[ 1693]     0  1693     3735       54      11       3        0             0 mcstransd
[ 1704]     0  1704    12927     1231      28       3        0             0 restorecond
[ 1714]     0  1714    12490      153      29       3        0         -1000 sshd
[ 1752]     0  1752     3649       40      13       3        0             0 getty
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[ 5136]     0  5136    18179    12843      33       4        0          1000 syz-executor.2
[ 5157]     0  5157    18179    12843      33       4        0          1000 syz-executor.2
[ 5189]     0  5189    18212    12845      33       4        0          1000 syz-executor.2
[ 5210]     0  5210    18179    12843      33       4        0          1000 syz-executor.2
[ 5227]     0  5227    18179    12843      33       4        0          1000 syz-executor.2
[ 5248]     0  5248    18179    12843      33       4        0          1000 syz-executor.2
[ 5268]     0  5268    18179    12843      33       4        0          1000 syz-executor.2
[ 5285]     0  5285    18179    12843      33       4        0          1000 syz-executor.2
[ 5308]     0  5308    18179    12843      33       4        0          1000 syz-executor.2
[ 5332]     0  5332    18179    12843      33       4        0          1000 syz-executor.2
[ 5348]     0  5348    18179    12843      33       4        0          1000 syz-executor.2
[ 5373]     0  5373    18179    12843      33       4        0          1000 syz-executor.2
[ 5392]     0  5392    18179    12843      33       4        0          1000 syz-executor.2
[ 5414]     0  5414    18179    12843      33       4        0          1000 syz-executor.2
[ 5433]     0  5433    18179    12843      33       4        0          1000 syz-executor.2
[ 5451]     0  5451    18113     8750      27       4        0          1000 syz-executor.2
[ 5458]     0  5458    18113     8750      27       4        0          1000 syz-executor.2
[ 5468]     0  5468    18113     8750      27       4        0          1000 syz-executor.2
[ 5481]     0  5481    18179    12843      33       4        0          1000 syz-executor.2
[ 5495]     0  5495    18179    12843      33       4        0          1000 syz-executor.2
[ 5513]     0  5513    18179    12843      33       4        0          1000 syz-executor.2
[ 5536]     0  5536    18179    12843      33       4        0          1000 syz-executor.2
[ 5555]     0  5555    18179    12843      33       4        0          1000 syz-executor.2
[ 5573]     0  5573    18179    12843      33       4        0          1000 syz-executor.2
[ 5592]     0  5592    18179    12843      33       4        0          1000 syz-executor.2
[ 5614]     0  5614    18179    12843      33       4        0          1000 syz-executor.2
[ 5631]     0  5631    18179    12843      33       4        0          1000 syz-executor.2
[ 5651]     0  5651    18179    12843      33       4        0          1000 syz-executor.2
[ 5669]     0  5669    18179    12843      33       4        0          1000 syz-executor.2
[ 5692]     0  5692    18179    12843      33       4        0          1000 syz-executor.2
[ 5712]     0  5712    18179    12843      33       4        0          1000 syz-executor.2
[ 5733]     0  5733    18179    12843      33       4        0          1000 syz-executor.2
[ 5752]     0  5752    18179    12843      33       4        0          1000 syz-executor.2
[ 5771]     0  5771    18179    12843      33       4        0          1000 syz-executor.2
[ 5794]     0  5794    18179    12843      33       4        0          1000 syz-executor.2
[ 5817]     0  5817    18179    12843      33       4        0          1000 syz-executor.2
[ 5839]     0  5839    18179    12843      33       4        0          1000 syz-executor.2
[ 5857]     0  5857    18179    12843      33       4        0          1000 syz-executor.2
[ 5878]     0  5878    18179    12843      33       4        0          1000 syz-executor.2
[ 5898]     0  5898    18179    12843      33       4        0          1000 syz-executor.2
[ 5915]     0  5915    18179    12843      33       4        0          1000 syz-executor.2
[ 5935]     0  5935    18179    12843      33       4        0          1000 syz-executor.2
[ 5962]     0  5962    18179    12843      33       4        0          1000 syz-executor.2
[ 5990]     0  5990    18179    12843      33       4        0          1000 syz-executor.2
[ 6013]     0  6013    18179    12843      33       4        0          1000 syz-executor.2
[ 6033]     0  6033    18179    12843      33       4        0          1000 syz-executor.2

Crashes (5):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/03/30 04:12 android-4.14 403d0082901c c35ee0ea .config console log report ci-android-414-kasan-gce-root
2019/03/19 08:36 android-4.14 ea583d160621 46264c32 .config console log report ci-android-414-kasan-gce-root
2019/01/29 06:11 android-4.14 63d1657d00e0 aa432daf .config console log report ci-android-414-kasan-gce-root
2019/01/17 08:02 android-4.14 42506d99b820 c2faf9b2 .config console log report ci-android-414-kasan-gce-root
2019/01/04 22:17 android-4.14 3c207c880674 0127e3ba .config console log report ci-android-414-kasan-gce-root
* Struck through repros no longer work on HEAD.