Message-ID: <000000000000adea7f062112ab4c@google.com>
Date: Sun, 01 Sep 2024 11:05:33 -0700
From: syzbot <syzbot+7f71f79bbfb4427b00e1@...kaller.appspotmail.com>
To: almaz.alexandrovich@...agon-software.com, linux-kernel@...r.kernel.org, 
	ntfs3@...ts.linux.dev, syzkaller-bugs@...glegroups.com
Subject: [syzbot] [ntfs3?] BUG: sleeping function called from invalid context
 in ntfs_d_hash

Hello,

syzbot found the following issue on:

HEAD commit:    86987d84b968 Merge tag 'v6.11-rc5-client-fixes' of git://g..
git tree:       upstream
console+strace: https://syzkaller.appspot.com/x/log.txt?x=12935393980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=8605cd35ddc8ff3c
dashboard link: https://syzkaller.appspot.com/bug?extid=7f71f79bbfb4427b00e1
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14516fa7980000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=11bf1e47980000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/17720a1549d0/disk-86987d84.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/55a9f2cf6e8d/vmlinux-86987d84.xz
kernel image: https://storage.googleapis.com/syzbot-assets/8760a72ae7d5/bzImage-86987d84.xz
mounted in repro #1: https://storage.googleapis.com/syzbot-assets/8d38edc6ad5d/mount_0.gz
mounted in repro #2: https://storage.googleapis.com/syzbot-assets/57ba0d69287b/mount_1.gz

The issue was bisected to:

commit d392e85fd1e8d58e460c17ca7d0d5c157848d9c1
Author: Konstantin Komarov <almaz.alexandrovich@...agon-software.com>
Date:   Tue Jun 25 06:57:33 2024 +0000

    fs/ntfs3: Fix the format of the "nocase" mount option

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1525a647980000
final oops:     https://syzkaller.appspot.com/x/report.txt?x=1725a647980000
console output: https://syzkaller.appspot.com/x/log.txt?x=1325a647980000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+7f71f79bbfb4427b00e1@...kaller.appspotmail.com
Fixes: d392e85fd1e8 ("fs/ntfs3: Fix the format of the "nocase" mount option")

ntfs3: loop0: Failed to initialize $Extend/$Reparse.
BUG: sleeping function called from invalid context at include/linux/sched/mm.h:337
in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 5222, name: syz-executor508
preempt_count: 0, expected: 0
RCU nest depth: 1, expected: 0
1 lock held by syz-executor508/5222:
 #0: ffffffff8e938320 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
 #0: ffffffff8e938320 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #0: ffffffff8e938320 (rcu_read_lock){....}-{1:2}, at: path_init+0x12a/0x1360 fs/namei.c:2437
CPU: 0 UID: 0 PID: 5222 Comm: syz-executor508 Not tainted 6.11.0-rc5-syzkaller-00057-g86987d84b968 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:93 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
 __might_resched+0x5d4/0x780 kernel/sched/core.c:8463
 might_alloc include/linux/sched/mm.h:337 [inline]
 slab_pre_alloc_hook mm/slub.c:3939 [inline]
 slab_alloc_node mm/slub.c:4017 [inline]
 kmem_cache_alloc_noprof+0x5d/0x2a0 mm/slub.c:4044
 ntfs_d_hash+0x1a0/0x420 fs/ntfs3/namei.c:398
 link_path_walk+0x92d/0xea0 fs/namei.c:2375
 path_openat+0x25d/0x3470 fs/namei.c:3882
 do_filp_open+0x235/0x490 fs/namei.c:3913
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1416
 do_sys_open fs/open.c:1431 [inline]
 __do_sys_openat fs/open.c:1447 [inline]
 __se_sys_openat fs/open.c:1442 [inline]
 __x64_sys_openat+0x247/0x2a0 fs/open.c:1442
 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: 0033:0x7f5174e4c2f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 17 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe8ece6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007ffe8ece6040 RCX: 00007f5174e4c2f9
RDX: 000000000000275a RSI: 0000000020000240 RDI: 00000000ffffff9c
RBP: 00007ffe8ece6048 R08: 00007ffe8ece6048 R09: 00007f5174e17ff0
R10: 0000000000000000 R11: 0000


---
This report is generated by a bot. It may contain errors.
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For information about bisection process see: https://goo.gl/tpsmEJ#bisection

If the report is already addressed, let syzbot know by replying with:
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