linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
* WARNING in udf_truncate_extents
@ 2020-10-12 13:20 syzbot
  2020-10-13  4:17 ` Bart Van Assche
  2022-10-10 16:07 ` [syzbot] " syzbot
  0 siblings, 2 replies; 7+ messages in thread
From: syzbot @ 2020-10-12 13:20 UTC (permalink / raw)
  To: axboe, bvanassche, chaitanya.kulkarni, jack, linux-kernel,
	syzkaller-bugs

Hello,

syzbot found the following issue on:

HEAD commit:    da690031 Merge branch 'i2c/for-current' of git://git.kerne..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=172e2ef0500000
kernel config:  https://syzkaller.appspot.com/x/.config?x=de7f697da23057c7
dashboard link: https://syzkaller.appspot.com/bug?extid=43fc5ba6dcb33e3261ca
compiler:       clang version 10.0.0 (https://github.com/llvm/llvm-project/ c2443155a0fb245c8f17f2c1c72b6ea391e86e81)
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=10ce0a8b900000

The issue was bisected to:

commit 2004bfdef945fe55196db6b9cdf321fbc75bb0de
Author: Bart Van Assche <bvanassche@acm.org>
Date:   Tue Mar 10 04:26:21 2020 +0000

    null_blk: Fix the null_add_dev() error path

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=10110920500000
final oops:     https://syzkaller.appspot.com/x/report.txt?x=12110920500000
console output: https://syzkaller.appspot.com/x/log.txt?x=14110920500000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+43fc5ba6dcb33e3261ca@syzkaller.appspotmail.com
Fixes: 2004bfdef945 ("null_blk: Fix the null_add_dev() error path")

UDF-fs: Scanning with blocksize 512 failed
UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2020/09/19 18:44 (1000)
------------[ cut here ]------------
WARNING: CPU: 1 PID: 17858 at fs/udf/truncate.c:226 udf_truncate_extents+0xf74/0x1120 fs/udf/truncate.c:226
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 17858 Comm: syz-executor.5 Not tainted 5.9.0-rc8-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1d6/0x29e lib/dump_stack.c:118
 panic+0x2c0/0x800 kernel/panic.c:231
 __warn+0x227/0x250 kernel/panic.c:600
 report_bug+0x1b1/0x2e0 lib/bug.c:198
 handle_bug+0x42/0x80 arch/x86/kernel/traps.c:234
 exc_invalid_op+0x16/0x40 arch/x86/kernel/traps.c:254
 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536
RIP: 0010:udf_truncate_extents+0xf74/0x1120 fs/udf/truncate.c:226
Code: 24 14 18 00 00 00 43 80 3c 2f 00 0f 85 63 fe ff ff e9 6b fe ff ff e8 2b 9a cd fe bb fb ff ff ff e9 27 ff ff ff e8 1c 9a cd fe <0f> 0b e9 1b ff ff ff 89 d9 80 e1 07 38 c1 0f 8c 59 f1 ff ff 48 89
RSP: 0018:ffffc90005ea7a08 EFLAGS: 00010293
RAX: ffffffff82a763d4 RBX: 0000000000000000 RCX: ffff888077582040
RDX: 0000000000000000 RSI: 0000000000000400 RDI: 0000000000000000
RBP: 0000000000000400 R08: ffffffff82a757a8 R09: ffffffff82a54d54
R10: 0000000000000002 R11: ffff888077582040 R12: 0000000005ea7aff
R13: 00000000000c2000 R14: 0000000000000308 R15: 1ffff1100e577c10
 udf_write_failed fs/udf/inode.c:176 [inline]
 udf_write_begin+0x1e2/0x210 fs/udf/inode.c:211
 generic_perform_write+0x23b/0x4e0 mm/filemap.c:3505
 __generic_file_write_iter+0x22b/0x4e0 mm/filemap.c:3634
 udf_file_write_iter+0x339/0x4e0 fs/udf/file.c:169
 do_iter_readv_writev+0x4f9/0x6c0 include/linux/fs.h:1876
 do_iter_write+0x164/0x610 fs/read_write.c:1026
 vfs_writev fs/read_write.c:1099 [inline]
 do_pwritev+0x234/0x430 fs/read_write.c:1196
 do_syscall_64+0x31/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45de59
Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f4cc0709c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000128
RAX: ffffffffffffffda RBX: 0000000000026400 RCX: 000000000045de59
RDX: 0000000000000001 RSI: 00000000200014c0 RDI: 0000000000000003
RBP: 000000000118bf70 R08: 0000000000000020 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 000000000118bf2c
R13: 00007fffd7780fdf R14: 00007f4cc070a9c0 R15: 000000000118bf2c
Kernel Offset: disabled
Rebooting in 86400 seconds..


---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller@googlegroups.com.

syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
syzbot can test patches for this issue, for details see:
https://goo.gl/tpsmEJ#testing-patches

^ permalink raw reply	[flat|nested] 7+ messages in thread
* WARNING in udf_truncate_extents
@ 2023-02-16 21:44 Sanan Hasanov
  2023-02-17 11:23 ` Jan Kara
  0 siblings, 1 reply; 7+ messages in thread
From: Sanan Hasanov @ 2023-02-16 21:44 UTC (permalink / raw)
  To: jack, linux-kernel; +Cc: syzkaller, contact

Good day, dear maintainers,

We found a bug using a modified kernel configuration file used by syzbot.

We enhanced the coverage of the configuration file using our tool, klocalizer.

Kernel Branch: 6.2.0-rc6-next-20230203
Kernel config: https://drive.google.com/file/d/1jWHyzy2KABqlRawd3FO2V2ZVNoMWpkZu/view?usp=share_link
C Reproducer: https://drive.google.com/file/d/1zH4AtT1D3O-vqihwMy-kxrFW6Rni6bZ_/view?usp=share_link

Thank you!

Best regards,
Sanan Hasanov

------------[ cut here ]------------
WARNING: CPU: 6 PID: 10426 at fs/udf/truncate.c:208 udf_truncate_extents+0x8a9/0x9d0
Modules linked in:
CPU: 6 PID: 10426 Comm: syz-executor.3 Not tainted 6.2.0-rc6-next-20230203 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014
RIP: 0010:udf_truncate_extents+0x8a9/0x9d0
Code: 84 d2 74 05 e8 e8 1e f9 fe 8b 44 24 20 be 07 00 00 00 48 89 df 89 83 cc fe ff ff e8 61 0b 13 ff e9 a5 fd ff ff e8 b7 23 aa fe <0f> 0b e9 1f fe ff ff e8 ab 23 aa fe 0f 0b 48 8b 7c 24 08 48 89 74
RSP: 0000:ffffc9000c6f7050 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888045252160 RCX: 0000000000000000
RDX: ffff888114e53900 RSI: ffffffff82d5b399 RDI: 0000000000000007
RBP: ffffc9000c6f7140 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000350 R11: 0000000000000001 R12: ffff8880530de000
R13: 0000000000000350 R14: 00000000000000ff R15: ffffc9000c6f7100
FS:  00007f601837e700(0000) GS:ffff888119f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000001ffffe40 CR3: 000000004c1b1000 CR4: 0000000000350ee0
Call Trace:
 <TASK>
 udf_write_failed.isra.0+0x173/0x1c0
 udf_write_begin+0x2c5/0x370
 generic_perform_write+0x259/0x580
 __generic_file_write_iter+0x2ae/0x500
 udf_file_write_iter+0x233/0x740
 __kernel_write_iter+0x262/0x7a0
 __kernel_write+0xc9/0x110
 dump_emit+0x21d/0x340
 elf_core_dump+0x215c/0x3720
 do_coredump+0x2d30/0x3ce0
 get_signal+0x1c11/0x25c0
 arch_do_signal_or_restart+0x79/0x5a0
 exit_to_user_mode_prepare+0x11f/0x240
 irqentry_exit_to_user_mode+0x9/0x30
 asm_exc_general_protection+0x26/0x30
RIP: 0033:0x7f601728edd5
Code: 0f 1f 44 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 48 3d 01 f0 ff ff 73 01 <c3> 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 84
RSP: 002b:0000000020000040 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f60173bc120 RCX: 00007f601728edcd
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 00007f60172fc59c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc959cbaaf R14: 00007ffc959cbc50 R15: 00007f601837dd80
 </TASK>
irq event stamp: 1369
hardirqs last  enabled at (1379): [<ffffffff81643788>] __up_console_sem+0x78/0x80
hardirqs last disabled at (1388): [<ffffffff8164376d>] __up_console_sem+0x5d/0x80
softirqs last  enabled at (490): [<ffffffff814b2d7d>] __irq_exit_rcu+0x11d/0x190
softirqs last disabled at (351): [<ffffffff814b2d7d>] __irq_exit_rcu+0x11d/0x190
---[ end trace 0000000000000000 ]---

^ permalink raw reply	[flat|nested] 7+ messages in thread
end of thread, other threads:[~2023-02-17 11:23 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-10-12 13:20 WARNING in udf_truncate_extents syzbot
2020-10-13  4:17 ` Bart Van Assche
2020-10-13  4:17   ` syzbot
2020-10-13  4:17   ` syzbot
2022-10-10 16:07 ` [syzbot] " syzbot
2023-02-16 21:44 Sanan Hasanov
2023-02-17 11:23 ` Jan Kara

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).