[syzbot] [ntfs3?] WARNING in iov_iter_revert (4)

syzbot
2023-06-08T08:21:05Z

Hello,

syzbot found the following issue on:

HEAD commit: a4d7d7011219 Merge tag 'spi-fix-v6.4-rc5' of git://git.ker..
git tree: upstream
console+strace: https://syzkaller.appspot.com/x/log.txt?x=16c28ab3280000
kernel config: https://syzkaller.appspot.com/x/.config?x=3c980bfe8b399968
dashboard link: https://syzkaller.appspot.com/bug?extid=5e732e5de356b7242fb8
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10ab7393280000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11697e1b280000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/1d4c310c7a76/disk-a4d7d701.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/918b9286fb09/vmlinux-a4d7d701.xz
kernel image: https://storage.googleapis.com/syzbot-assets/a1c1f51764b3/bzImage-a4d7d701.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/55b5173d0801/mount_0.gz

The issue was bisected to:

commit 6e5be40d32fb1907285277c02e74493ed43d77fe
Author: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Date: Fri Aug 13 14:21:30 2021 +0000

fs/ntfs3: Add NTFS3 in fs/Kconfig and fs/Makefile

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16af0359280000
final oops: https://syzkaller.appspot.com/x/report.txt?x=15af0359280000
console output: https://syzkaller.appspot.com/x/log.txt?x=11af0359280000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+5e732e5de356b7242fb8@syzkaller.appspotmail.com
Fixes: 6e5be40d32fb ("fs/ntfs3: Add NTFS3 in fs/Kconfig and fs/Makefile")

RBP: 00007fff19f23f20 R08: 0000000000000002 R09: 00007fff19f23f30
R10: 0000000100000000 R11: 0000000000000246 R12: 0000000000000005
R13: 00007fff19f23f60 R14: 00007fff19f23f40 R15: 0000000000000001
</TASK>
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5001 at lib/iov_iter.c:970 iov_iter_revert+0x59/0x60 lib/iov_iter.c:970
Modules linked in:
CPU: 0 PID: 5001 Comm: syz-executor145 Not tainted 6.4.0-rc5-syzkaller-00016-ga4d7d7011219 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
RIP: 0010:iov_iter_revert+0x59/0x60 lib/iov_iter.c:970
Code: 1d 6a 73 fd 48 81 fd 00 f0 ff 7f 77 18 e8 cf 6d 73 fd 48 89 ee 4c 89 e7 e8 84 f8 ff ff 5d 41 5c e9 bc 6d 73 fd e8 b7 6d 73 fd <0f> 0b eb ef 0f 1f 00 41 54 49 89 fc 55 53 e8 a4 6d 73 fd 49 8d 7c
RSP: 0018:ffffc90003adf968 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88807d889dc0 RSI: ffffffff8410d889 RDI: 0000000000000007
RBP: ffffffffffff1000 R08: 0000000000000007 R09: 000000007ffff000
R10: ffffffffffff1000 R11: 0000000000000001 R12: ffffc90003adfa60
R13: ffffc90003adfa60 R14: ffff888078367a78 R15: ffff88807a84d400
FS: 0000555556f46300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f62af0bc138 CR3: 000000001e80f000 CR4: 0000000000350ef0
Call Trace:
<TASK>
generic_file_read_iter+0x2b2/0x5b0 mm/filemap.c:2820
ntfs_file_read_iter+0x1b8/0x270 fs/ntfs3/file.c:744
call_read_iter include/linux/fs.h:1862 [inline]
generic_file_splice_read+0x182/0x4b0 fs/splice.c:419
do_splice_to+0x1b9/0x240 fs/splice.c:902
splice_direct_to_actor+0x2ab/0x8a0 fs/splice.c:973
do_splice_direct+0x1ab/0x280 fs/splice.c:1082
do_sendfile+0xb19/0x12c0 fs/read_write.c:1254
__do_sys_sendfile64 fs/read_write.c:1322 [inline]
__se_sys_sendfile64 fs/read_write.c:1308 [inline]
__x64_sys_sendfile64+0x1d0/0x210 fs/read_write.c:1308
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f62af02a9f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff19f23ef8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f62af02a9f9
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004
RBP: 00007fff19f23f20 R08: 0000000000000002 R09: 00007fff19f23f30
R10: 0000000100000000 R11: 0000000000000246 R12: 0000000000000005
R13: 00007fff19f23f60 R14: 00007fff19f23f40 R15: 0000000000000001
</TASK>

---
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