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* WARNING: kernel stack regs at         (ptrval) in syzkaller has bad 'bp' value         (ptrval)
@ 2018-04-23 10:10 syzbot
  2018-04-23 10:59 ` Dmitry Vyukov
  0 siblings, 1 reply; 2+ messages in thread
From: syzbot @ 2018-04-23 10:10 UTC (permalink / raw)
  To: linux-kernel, syzkaller-bugs


syzbot hit the following crash on upstream commit
5ec83b22a2dd13180762c89698e4e2c2881a423c (Sun Apr 22 19:13:04 2018 +0000)
Merge tag '4.17-rc1-SMB3-CIFS' of git://
syzbot dashboard link:

C reproducer:
syzkaller reproducer:
Raw console output:
Kernel config:
compiler: gcc (GCC) 8.0.1 20180413 (experimental)

IMPORTANT: if you fix the bug, please add the following tag to the commit:
It will help syzbot understand when the bug is fixed. See footer for  
If you forward the report, please keep this part and the footer.

         (ptrval): 0000000000445649 (0x445649)
         (ptrval): 0000000000000033 (0x33)
         (ptrval): 0000000000000216 (0x216)
         (ptrval): 00007f155536eda8 (0x7f155536eda8)
         (ptrval): 000000000000002b (0x2b)
WARNING: kernel stack regs at         (ptrval) in syzkaller547737:4493 has  
bad 'bp' value         (ptrval)
WARNING: kernel stack frame pointer at         (ptrval) in  
syzkaller547737:4496 has bad value         (ptrval)

This bug is generated by a dumb bot. It may contain errors.
See for details.
Direct all questions to

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If you forgot to add the Reported-by tag, once the fix for this bug is  
into any tree, please reply to this email with:
#syz fix: exact-commit-title
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Note: if the crash happens again, it will cause creation of a new bug  
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2018-04-23 10:10 WARNING: kernel stack regs at (ptrval) in syzkaller has bad 'bp' value (ptrval) syzbot
2018-04-23 10:59 ` Dmitry Vyukov

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