syzbot


possible deadlock in mi_read

Status: upstream: reported C repro on 2022/10/01 13:47
Labels: ntfs3 (incorrect?)
Reported-by: syzbot+bc7ca0ae4591cb2550f9@syzkaller.appspotmail.com
First crash: 244d, last: 23h52m

Cause bisection: failed (error log, bisect log)
Discussions (4)
Title Replies (including bot) Last reply
[syzbot] Monthly ntfs3 report (May 2023) 0 (1) 2023/05/29 08:47
[syzbot] Monthly ntfs3 report (Apr 2023) 0 (1) 2023/04/28 08:47
[syzbot] Monthly ntfs3 report 0 (1) 2023/03/27 17:38
[syzbot] possible deadlock in mi_read 0 (1) 2022/10/01 13:47
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 possible deadlock in mi_read origin:upstream C 32 3d18h 80d 0/3 upstream: reported C repro on 2023/03/14 03:50
linux-6.1 possible deadlock in mi_read origin:upstream C 109 8d21h 77d 0/3 upstream: reported C repro on 2023/03/17 09:05
Fix bisection attempts (1)
Created Duration User Patch Repo Result
2022/11/04 11:48 36m bisect fix upstream job log (0) log

Sample crash report:
loop0: detected capacity change from 0 to 4096
ntfs3: loop0: Different NTFS' sector size (1024) and media sector size (512)
============================================
WARNING: possible recursive locking detected
6.0.0-rc7-syzkaller-00220-gffb4d94b4314 #0 Not tainted
--------------------------------------------
syz-executor130/3607 is trying to acquire lock:
ffff888074709e80 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1108 [inline]
ffff888074709e80 (&ni->ni_lock/4){+.+.}-{3:3}, at: mi_read+0x298/0x510 fs/ntfs3/record.c:148

but task is already holding lock:
ffff88807470d980 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1108 [inline]
ffff88807470d980 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs_lookup+0x104/0x1b0 fs/ntfs3/namei.c:82

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(&ni->ni_lock/4);
  lock(&ni->ni_lock/4);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

2 locks held by syz-executor130/3607:
 #0: ffff88807470dc20 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:766 [inline]
 #0: ffff88807470dc20 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1701
 #1: ffff88807470d980 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1108 [inline]
 #1: ffff88807470d980 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs_lookup+0x104/0x1b0 fs/ntfs3/namei.c:82

stack backtrace:
CPU: 1 PID: 3607 Comm: syz-executor130 Not tainted 6.0.0-rc7-syzkaller-00220-gffb4d94b4314 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106
 print_deadlock_bug kernel/locking/lockdep.c:2988 [inline]
 check_deadlock kernel/locking/lockdep.c:3031 [inline]
 validate_chain+0x4916/0x6c00 kernel/locking/lockdep.c:3816
 __lock_acquire+0x1292/0x1f60 kernel/locking/lockdep.c:5053
 lock_acquire+0x182/0x3c0 kernel/locking/lockdep.c:5666
 __mutex_lock_common+0x1bd/0x26e0 kernel/locking/mutex.c:603
 __mutex_lock kernel/locking/mutex.c:747 [inline]
 mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799
 ni_lock fs/ntfs3/ntfs_fs.h:1108 [inline]
 mi_read+0x298/0x510 fs/ntfs3/record.c:148
 ntfs_read_mft fs/ntfs3/inode.c:69 [inline]
 ntfs_iget5+0x3f9/0x36a0 fs/ntfs3/inode.c:501
 dir_search_u+0x2aa/0x320 fs/ntfs3/dir.c:264
 ntfs_lookup+0x112/0x1b0 fs/ntfs3/namei.c:83
 __lookup_slow+0x266/0x3a0 fs/namei.c:1685
 lookup_slow+0x53/0x70 fs/namei.c:1702
 walk_component+0x2e1/0x410 fs/namei.c:1993
 lookup_last fs/namei.c:2450 [inline]
 path_lookupat+0x17d/0x450 fs/namei.c:2474
 filename_lookup+0x274/0x650 fs/namei.c:2503
 user_path_at_empty+0x40/0x1a0 fs/namei.c:2876
 user_path_at include/linux/namei.h:57 [inline]
 __do_sys_open_tree fs/namespace.c:2537 [inline]
 __se_sys_open_tree+0x1fa/0x8c0 fs/namespace.c:2504
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f0d628870e9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc67bb1008 EFLAGS: 00000246 ORIG_RAX: 00000000000001ac
RAX: ffffffffffffffda RBX: 00007f0d628cca90 RCX: 00007f0d628870e9
RDX: 0000000000000800 RSI: 0000000020000140 RDI: 0000000000000003
RBP: 00007f0d628cc7a8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0d628cc5c0
R13: 00007f0d628ca918 R14: 0003

Crashes (434):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Manager Title
2022/10/01 20:29 upstream ffb4d94b4314 feb56351 .config strace log report syz C [disk image] [vmlinux] ci2-upstream-fs possible deadlock in mi_read
2023/05/06 10:12 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 14f8db1c0f9a 90c93c40 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-gce-arm64 possible deadlock in mi_read
2023/05/05 11:52 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 14f8db1c0f9a 518a39a6 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-gce-arm64 possible deadlock in mi_read
2022/10/01 09:49 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bbed346d5a96 feb56351 .config console log report syz C [disk image] [vmlinux] ci-upstream-gce-arm64 possible deadlock in mi_read
2023/06/01 16:29 upstream 929ed21dfdb6 babc4389 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/31 05:29 upstream afead42fdfca 09898419 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/31 04:05 upstream afead42fdfca df37c7f1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/30 20:25 upstream 8b817fded42d df37c7f1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/30 01:11 upstream 8b817fded42d cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/29 23:37 upstream 8b817fded42d cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/29 20:26 upstream 8b817fded42d cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/29 00:19 upstream 416839029e38 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/28 20:48 upstream 416839029e38 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/28 16:50 upstream 416839029e38 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/28 07:56 upstream 4e893b5aa4ac cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/26 18:59 upstream 0d85b27b0cc6 b0e6aca7 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream possible deadlock in mi_read
2023/05/26 16:04 upstream 9db898594c54 b40ef614 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/26 08:26 upstream 9db898594c54 b40ef614 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/26 03:40 upstream 9db898594c54 0513b3e6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/24 10:29 upstream 27e462c8fad4 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/22 22:10 upstream 44c026a73be8 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/22 17:32 upstream 44c026a73be8 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/22 14:12 upstream 44c026a73be8 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/22 07:39 upstream e2065b8c1b01 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/22 02:03 upstream e2065b8c1b01 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/21 07:47 upstream 0dd2a6fb1e34 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/20 21:09 upstream d635f6cc934b 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/18 14:32 upstream 4d6d4c7f541d 3bb7af1d .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/16 14:10 upstream f1fcbaa18b28 71b00cfb .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/16 11:51 upstream f1fcbaa18b28 71b00cfb .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/16 08:38 upstream f1fcbaa18b28 71b00cfb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root possible deadlock in mi_read
2023/05/15 20:53 upstream f1fcbaa18b28 c4d362e7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/13 14:07 upstream 9a48d6046722 2b9ba477 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/12 18:55 upstream cc3c44c9fda2 ecca8a24 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/11 23:32 upstream 105131df9c3b adb9a3cd .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/11 17:08 upstream d295b66a7b66 0fbd49f4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/09 16:46 upstream ba0ad6ed89fd 30aa2a7e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/08 23:32 upstream ba0ad6ed89fd c7a5e2a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/08 21:08 upstream ac9a78681b92 90c93c40 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root possible deadlock in mi_read
2023/05/08 08:14 upstream 17784de648be 90c93c40 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/08 05:58 upstream 17784de648be 90c93c40 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/07 15:39 upstream fc4354c6e5c2 90c93c40 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/07 14:12 upstream fc4354c6e5c2 90c93c40 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/07 12:59 upstream fc4354c6e5c2 90c93c40 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/06 23:06 upstream 2e1e1337881b 90c93c40 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/05/05 21:05 upstream 7163a2111f6c de870ca5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs possible deadlock in mi_read
2023/04/29 07:10 upstream 22b8cc3e78f5 62df2017 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root possible deadlock in mi_read
2023/04/24 13:49 upstream 457391b03803 c778c7f4 .config console log report info ci-qemu-upstream-386 possible deadlock in mi_read
2023/04/29 08:45 linux-next 92e815cf07ed 62df2017 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root possible deadlock in mi_read
2023/05/29 22:00 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci eb0f1697d729 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in mi_read
2023/05/28 04:10 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci eb0f1697d729 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in mi_read
2023/05/21 23:19 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci f1fcbaa18b28 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in mi_read
2023/05/21 20:51 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci f1fcbaa18b28 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in mi_read
2023/05/12 10:57 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 14f8db1c0f9a adb9a3cd .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in mi_read
2023/05/10 17:12 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 14f8db1c0f9a 0fbd49f4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in mi_read
2023/05/05 21:16 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 14f8db1c0f9a 4cec9341 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in mi_read
2022/10/01 09:25 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bbed346d5a96 feb56351 .config console log report info [disk image] [vmlinux] ci-upstream-gce-arm64 possible deadlock in mi_read
* Struck through repros no longer work on HEAD.