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* kernel BUG at fs/f2fs/node.c:LINE!
@ 2018-04-21 13:02 syzbot
  2018-04-24  6:01 ` Jaegeuk Kim
  2018-04-24  6:20 ` Jaegeuk Kim
  0 siblings, 2 replies; 8+ messages in thread
From: syzbot @ 2018-04-21 13:02 UTC (permalink / raw)
  To: jaegeuk, linux-f2fs-devel, linux-kernel, syzkaller-bugs, yuchao0


syzbot hit the following crash on upstream commit
83beed7b2b26f232d782127792dd0cd4362fdc41 (Fri Apr 20 17:56:32 2018 +0000)
Merge branch 'fixes' of  
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  
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F2FS-fs (loop0): Magic Mismatch, valid(0xf2f52010) - read(0x0)
F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
F2FS-fs (loop0): invalid crc value
------------[ cut here ]------------
kernel BUG at fs/f2fs/node.c:1185!
invalid opcode: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
    (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 4549 Comm: syzkaller704305 Not tainted 4.17.0-rc1+ #10
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS  
Google 01/01/2011
RIP: 0010:__get_node_page+0xb68/0x16e0 fs/f2fs/node.c:1185
RSP: 0018:ffff8801d960e820 EFLAGS: 00010293
RAX: ffff8801d88205c0 RBX: 0000000000000003 RCX: ffffffff82f6cc06
RDX: 0000000000000000 RSI: ffffffff82f6d5e8 RDI: 0000000000000004
RBP: ffff8801d960ec30 R08: ffff8801d88205c0 R09: ffffed003b5e46c2
R10: 0000000000000003 R11: 0000000000000003 R12: ffff8801a86e00c0
R13: 0000000000000001 R14: ffff8801a86e0530 R15: ffff8801d9745240
FS:  000000000072c880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3d403209b8 CR3: 00000001d8f3f000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
  get_node_page fs/f2fs/node.c:1237 [inline]
  truncate_xattr_node+0x152/0x2e0 fs/f2fs/node.c:1014
  remove_inode_page+0x200/0xaf0 fs/f2fs/node.c:1039
  f2fs_evict_inode+0xe86/0x1710 fs/f2fs/inode.c:547
  evict+0x4a6/0x960 fs/inode.c:557
  iput_final fs/inode.c:1519 [inline]
  iput+0x62d/0xa80 fs/inode.c:1545
  f2fs_fill_super+0x5f4e/0x7bf0 fs/f2fs/super.c:2849
  mount_bdev+0x30c/0x3e0 fs/super.c:1164
  f2fs_mount+0x34/0x40 fs/f2fs/super.c:3020
  mount_fs+0xae/0x328 fs/super.c:1267
  vfs_kern_mount.part.34+0xd4/0x4d0 fs/namespace.c:1037
  vfs_kern_mount fs/namespace.c:1027 [inline]
  do_new_mount fs/namespace.c:2518 [inline]
  do_mount+0x564/0x3070 fs/namespace.c:2848
  ksys_mount+0x12d/0x140 fs/namespace.c:3064
  __do_sys_mount fs/namespace.c:3078 [inline]
  __se_sys_mount fs/namespace.c:3075 [inline]
  __x64_sys_mount+0xbe/0x150 fs/namespace.c:3075
  do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287
RIP: 0033:0x443dea
RSP: 002b:00007ffcc7882368 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020000c00 RCX: 0000000000443dea
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffcc7882370
RBP: 0000000000000003 R08: 0000000020016a00 R09: 000000000000000a
R10: 0000000000000000 R11: 0000000000000297 R12: 0000000000000004
R13: 0000000000402ce0 R14: 0000000000000000 R15: 0000000000000000
Code: ff e9 4f fa ff ff e8 58 5a 82 fe 48 89 df e8 70 ee 9d fe e9 73 f8 ff  
ff e8 46 5a 82 fe 4d 8d 66 ff e9 5a f9 ff ff e8 38 5a 82 fe <0f> 0b 41 bc  
b6 ff ff ff e9 e2 fc ff ff 48 89 95 08 fc ff ff e8
RIP: __get_node_page+0xb68/0x16e0 fs/f2fs/node.c:1185 RSP: ffff8801d960e820
---[ end trace 4edbeb71f002bb76 ]---

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^ permalink raw reply	[flat|nested] 8+ messages in thread

end of thread, other threads:[~2018-04-24 16:28 UTC | newest]

Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-04-21 13:02 kernel BUG at fs/f2fs/node.c:LINE! syzbot
2018-04-24  6:01 ` Jaegeuk Kim
2018-04-24  6:04   ` syzbot
2018-04-24  6:20 ` Jaegeuk Kim
2018-04-24  6:42   ` syzbot
2018-04-24 14:28     ` Dmitry Vyukov
2018-04-24 14:42       ` syzbot
2018-04-24 16:27       ` Jaegeuk Kim

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