Message-ID: <00000000000042a5d005e967cd34@google.com>
Date:   Sat, 24 Sep 2022 01:08:38 -0700
From:   syzbot <syzbot+15cb24a539075fc4c472@...kaller.appspotmail.com>
To:     linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        syzkaller-bugs@...glegroups.com, viro@...iv.linux.org.uk
Subject: [syzbot] invalid opcode in writeback_single_inode

Hello,

syzbot found the following issue on:

HEAD commit:    dc164f4fb00a Merge tag 'for-linus-6.0-rc7' of git://git.ke..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=132e8dd5080000
kernel config:  https://syzkaller.appspot.com/x/.config?x=7db7ad17eb14cb7
dashboard link: https://syzkaller.appspot.com/bug?extid=15cb24a539075fc4c472
compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/853950e33581/disk-dc164f4f.raw.xz
vmlinux: https://storage.googleapis.com/1359f09c5a19/vmlinux-dc164f4f.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+15cb24a539075fc4c472@...kaller.appspotmail.com

loop5: detected capacity change from 0 to 8189
ntfs3: loop5: Different NTFS' sector size (1024) and media sector size (512)
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 11292 Comm: syz-executor.5 Not tainted 6.0.0-rc6-syzkaller-00045-gdc164f4fb00a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2022
RIP: 0010:spin_lock include/linux/spinlock.h:349 [inline]
RIP: 0010:writeback_single_inode+0x2e/0x4c0 fs/fs-writeback.c:1676
Code: 41 55 41 54 49 89 f4 55 48 89 fd 53 4c 8d b5 88 00 00 00 4c 8d ad 08 02 00 00 48 83 ec 08 e8 b9 12 99 ff 4c 89 f7 e8 31 f0 a0 <07> be 04 00 00 00 4c 89 ef e8 94 b3 e4 ff 4c 89 ea 48 b8 00 00 00
RSP: 0018:ffffc90004dd7a10 EFLAGS: 00010292
RAX: 0000000000000000 RBX: 1ffff920009baf4b RCX: ffffffff815f1e80
RDX: 1ffff11006c6606d RSI: 0000000000000004 RDI: ffffc90004dd79a0
RBP: ffff8880363302d0 R08: 0000000000000001 R09: 0000000000000003
R10: fffff520009baf34 R11: 0000000000000000 R12: ffffc90004dd7a88
R13: ffff8880363304d8 R14: ffff888036330358 R15: ffff8880363303a8
FS:  00007efc6583b700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020075000 CR3: 000000001d8c1000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 write_inode_now+0x16a/0x1e0 fs/fs-writeback.c:2723
 iput_final fs/inode.c:1735 [inline]
 iput.part.0+0x45b/0x810 fs/inode.c:1774
 iput+0x58/0x70 fs/inode.c:1764
 ntfs_fill_super+0x2e89/0x37f0 fs/ntfs3/super.c:1190
 get_tree_bdev+0x440/0x760 fs/super.c:1323
 vfs_get_tree+0x89/0x2f0 fs/super.c:1530
 do_new_mount fs/namespace.c:3040 [inline]
 path_mount+0x1326/0x1e20 fs/namespace.c:3370
 do_mount fs/namespace.c:3383 [inline]
 __do_sys_mount fs/namespace.c:3591 [inline]
 __se_sys_mount fs/namespace.c:3568 [inline]
 __x64_sys_mount+0x27f/0x300 fs/namespace.c:3568
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7efc6468bb9a
Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007efc6583af88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007efc6468bb9a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007efc6583afe0
RBP: 00007efc6583b020 R08: 00007efc6583b020 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000
R13: 0000000020000100 R14: 00007efc6583afe0 R15: 000000002007c6a0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:spin_lock include/linux/spinlock.h:349 [inline]
RIP: 0010:writeback_single_inode+0x2e/0x4c0 fs/fs-writeback.c:1676
Code: 41 55 41 54 49 89 f4 55 48 89 fd 53 4c 8d b5 88 00 00 00 4c 8d ad 08 02 00 00 48 83 ec 08 e8 b9 12 99 ff 4c 89 f7 e8 31 f0 a0 <07> be 04 00 00 00 4c 89 ef e8 94 b3 e4 ff 4c 89 ea 48 b8 00 00 00
RSP: 0018:ffffc90004dd7a10 EFLAGS: 00010292
RAX: 0000000000000000 RBX: 1ffff920009baf4b RCX: ffffffff815f1e80
RDX: 1ffff11006c6606d RSI: 0000000000000004 RDI: ffffc90004dd79a0
RBP: ffff8880363302d0 R08: 0000000000000001 R09: 0000000000000003
R10: fffff520009baf34 R11: 0000000000000000 R12: ffffc90004dd7a88
R13: ffff8880363304d8 R14: ffff888036330358 R15: ffff8880363303a8
FS:  00007efc6583b700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020075000 CR3: 000000001d8c1000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400


---
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