syzbot


kernel BUG in __blockdev_direct_IO

Status: auto-obsoleted due to no activity on 2023/12/03 07:18
Subsystems: ntfs3
[Documentation on labels]
Reported-by: syzbot+c73388acf8b6a00343a4@syzkaller.appspotmail.com
First crash: 276d, last: 233d
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [ntfs3?] kernel BUG in __blockdev_direct_IO 0 (1) 2023/07/17 09:40

Sample crash report:
------------[ cut here ]------------
kernel BUG at fs/direct-io.c:217!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 3 PID: 23262 Comm: syz-executor.3 Not tainted 6.5.0-rc7-syzkaller-00093-gf8d6ff449094 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:dio_get_page fs/direct-io.c:217 [inline]
RIP: 0010:do_direct_IO fs/direct-io.c:914 [inline]
RIP: 0010:__blockdev_direct_IO+0x339e/0x3cd0 fs/direct-io.c:1248
Code: ff 8b ac 24 14 02 00 00 8b 9c 24 10 02 00 00 e8 b8 45 8a ff 89 ee 89 df e8 9f 40 8a ff 39 eb 0f 85 80 dc ff ff e8 a2 45 8a ff <0f> 0b 48 8b 3c 24 e8 37 53 de ff e9 12 cf ff ff 48 8b 7c 24 40 e8
RSP: 0018:ffffc900293071c0 EFLAGS: 00010246
RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc90003fd3000
RDX: 0000000000040000 RSI: ffffffff81fbc2fe RDI: 0000000000000004
RBP: 0000000000000000 R08: 0000000000000004 R09: 0000000000000000
R10: 0000000000000000 R11: 000000000009401a R12: 0000000000008801
R13: 0000000000000009 R14: 0000000000000200 R15: ffffea0001597580
FS:  0000000000000000(0000) GS:ffff88802c900000(0063) knlGS:00000000f7fa3b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f7f61da4 CR3: 000000004d7ae000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 blockdev_direct_IO include/linux/fs.h:2836 [inline]
 ntfs_direct_IO+0x271/0x470 fs/ntfs3/inode.c:788
 generic_file_direct_write+0x132/0x360 mm/filemap.c:3848
 __generic_file_write_iter+0x11d/0x240 mm/filemap.c:4004
 ntfs_file_write_iter+0xd3e/0x1c10 fs/ntfs3/file.c:1081
 call_write_iter include/linux/fs.h:1877 [inline]
 do_iter_readv_writev+0x21e/0x3c0 fs/read_write.c:735
 do_iter_write+0x17f/0x830 fs/read_write.c:860
 vfs_iter_write+0x7a/0xb0 fs/read_write.c:901
 iter_file_splice_write+0x698/0xbf0 fs/splice.c:739
 do_splice_from fs/splice.c:936 [inline]
 direct_splice_actor+0x118/0x180 fs/splice.c:1145
 splice_direct_to_actor+0x347/0xa30 fs/splice.c:1091
 do_splice_direct+0x1af/0x280 fs/splice.c:1197
 do_sendfile+0xb88/0x1390 fs/read_write.c:1254
 __do_compat_sys_sendfile fs/read_write.c:1343 [inline]
 __se_compat_sys_sendfile fs/read_write.c:1326 [inline]
 __ia32_compat_sys_sendfile+0x1e3/0x220 fs/read_write.c:1326
 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
 __do_fast_syscall_32+0x61/0xe0 arch/x86/entry/common.c:178
 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203
 entry_SYSENTER_compat_after_hwframe+0x70/0x82
RIP: 0023:0xf7fa8579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f7fa35ac EFLAGS: 00000292 ORIG_RAX: 00000000000000bb
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000000006
RDX: 0000000000000000 RSI: 000000007fffffff RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:dio_get_page fs/direct-io.c:217 [inline]
RIP: 0010:do_direct_IO fs/direct-io.c:914 [inline]
RIP: 0010:__blockdev_direct_IO+0x339e/0x3cd0 fs/direct-io.c:1248
Code: ff 8b ac 24 14 02 00 00 8b 9c 24 10 02 00 00 e8 b8 45 8a ff 89 ee 89 df e8 9f 40 8a ff 39 eb 0f 85 80 dc ff ff e8 a2 45 8a ff <0f> 0b 48 8b 3c 24 e8 37 53 de ff e9 12 cf ff ff 48 8b 7c 24 40 e8
RSP: 0018:ffffc900293071c0 EFLAGS: 00010246
RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc90003fd3000
RDX: 0000000000040000 RSI: ffffffff81fbc2fe RDI: 0000000000000004
RBP: 0000000000000000 R08: 0000000000000004 R09: 0000000000000000
R10: 0000000000000000 R11: 000000000009401a R12: 0000000000008801
R13: 0000000000000009 R14: 0000000000000200 R15: ffffea0001597580
FS:  0000000000000000(0000) GS:ffff88802c700000(0063) knlGS:00000000f7fa3b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000000002003f000 CR3: 000000004d7ae000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	10 06                	adc    %al,(%rsi)
   2:	03 74 b4 01          	add    0x1(%rsp,%rsi,4),%esi
   6:	10 07                	adc    %al,(%rdi)
   8:	03 74 b0 01          	add    0x1(%rax,%rsi,4),%esi
   c:	10 08                	adc    %cl,(%rax)
   e:	03 74 d8 01          	add    0x1(%rax,%rbx,8),%esi
  1e:	00 51 52             	add    %dl,0x52(%rcx)
  21:	55                   	push   %rbp
  22:	89 e5                	mov    %esp,%ebp
  24:	0f 34                	sysenter
  26:	cd 80                	int    $0x80
* 28:	5d                   	pop    %rbp <-- trapping instruction
  29:	5a                   	pop    %rdx
  2a:	59                   	pop    %rcx
  2b:	c3                   	ret
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	90                   	nop
  2f:	90                   	nop
  30:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi
  37:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/08/25 07:17 upstream f8d6ff449094 49be837e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in __blockdev_direct_IO
2023/08/06 19:59 upstream 0108963f14e9 4ffcc9ef .config console log report info ci-qemu-upstream-386 kernel BUG in __blockdev_direct_IO
2023/07/13 09:31 upstream eb26cbb1a754 86081196 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in __blockdev_direct_IO
* Struck through repros no longer work on HEAD.