linux-kernel - Re: [syzbot] [ntfs3?] kernel panic: stack is corrupted in vprintk

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Message-ID: <000000000000ab391e0621bec510@google.com>
Date: Tue, 10 Sep 2024 00:25:04 -0700
From: syzbot <syzbot+4d2aaeff9eb5a2cfec70@...kaller.appspotmail.com>
To: almaz.alexandrovich@...agon-software.com, linux-kernel@...r.kernel.org, 
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [ntfs3?] kernel panic: stack is corrupted in vprintk_emit

Hello,

syzbot has tested the proposed patch but the reproducer is still triggering an issue:
kernel panic: stack is corrupted in vprintk_emit

loop0: detected capacity change from 0 to 4096
ntfs3: loop0: Different NTFS sector size (1024) and media sector size (512).
ntfs3: loop0: Failed to load $UpCase (-22).
Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: vprintk_emit+0x764/0x770
CPU: 0 UID: 0 PID: 6009 Comm: syz.0.65 Not tainted 6.11.0-rc1-syzkaller-00017-g689ecd06ef8d-dirty #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:93 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
 panic+0x349/0x860 kernel/panic.c:348
 __stack_chk_fail+0x15/0x20 kernel/panic.c:821
 vprintk_emit+0x764/0x770
 _printk+0xd5/0x120 kernel/printk/printk.c:2373
 ntfs_printk+0x3ad/0x420 fs/ntfs3/super.c:93
 ntfs_fill_super+0x2eb8/0x4730
 get_tree_bdev+0x3f7/0x570 fs/super.c:1635
 vfs_get_tree+0x90/0x2a0 fs/super.c:1800
 do_new_mount+0x2be/0xb40 fs/namespace.c:3472
 do_mount fs/namespace.c:3812 [inline]
 __do_sys_mount fs/namespace.c:4020 [inline]
 __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3997
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1fc857b0ba
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 7e 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1fc934be68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f1fc934bef0 RCX: 00007f1fc857b0ba
RDX: 000000002001f800 RSI: 000000002001f840 RDI: 00007f1fc934beb0
RBP: 000000002001f800 R08: 00007f1fc934bef0 R09: 0000000000000801
R10: 0000000000000801 R11: 0000000000000246 R12: 000000002001f840
R13: 00007f1fc934beb0 R14: 000000000001f829 R15: 0000000020000000
 </TASK>
Kernel Offset: disabled
Rebooting in 86400 seconds..


Tested on:

commit:         689ecd06 fs/ntfs3: Rename ntfs3_setattr into ntfs_seta..
git tree:       https://github.com/Paragon-Software-Group/linux-ntfs3.git master
console output: https://syzkaller.appspot.com/x/log.txt?x=15632a8b980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=8b0cca2f3880513d
dashboard link: https://syzkaller.appspot.com/bug?extid=4d2aaeff9eb5a2cfec70
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
patch:          https://syzkaller.appspot.com/x/patch.diff?x=1025a807980000