Message-ID: <675963eb.050a0220.17f54a.0038.GAE@google.com>
Date: Wed, 11 Dec 2024 02:05:31 -0800
From: syzbot <syzbot+03fb58296859d8dbab4d@...kaller.appspotmail.com>
To: asmadeus@...ewreck.org, ericvh@...il.com, ericvh@...nel.org, 
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux_oss@...debyte.com, lucho@...kov.net, syzkaller-bugs@...glegroups.com, 
	torvalds@...ux-foundation.org, v9fs-developer@...ts.sourceforge.net, 
	v9fs@...ts.linux.dev, viro@...iv.linux.org.uk
Subject: [syzbot] [v9fs?] WARNING in __alloc_frozen_pages_noprof

Hello,

syzbot found the following issue on:

HEAD commit:    af2ea8ab7a54 Add linux-next specific files for 20241205
git tree:       linux-next
console+strace: https://syzkaller.appspot.com/x/log.txt?x=1369fde8580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=76f158395f6f15fd
dashboard link: https://syzkaller.appspot.com/bug?extid=03fb58296859d8dbab4d
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=15070820580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=16e870f8580000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/8af0861258fa/disk-af2ea8ab.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/ffb38cf7a344/vmlinux-af2ea8ab.xz
kernel image: https://storage.googleapis.com/syzbot-assets/6fbd2e50358a/bzImage-af2ea8ab.xz

The issue was bisected to:

commit 3a34b13a88caeb2800ab44a4918f230041b37dd9
Author: Linus Torvalds <torvalds@...ux-foundation.org>
Date:   Fri Jul 30 22:42:34 2021 +0000

    pipe: make pipe writes always wake up readers

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=10759c0f980000
final oops:     https://syzkaller.appspot.com/x/report.txt?x=12759c0f980000
console output: https://syzkaller.appspot.com/x/log.txt?x=14759c0f980000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+03fb58296859d8dbab4d@...kaller.appspotmail.com
Fixes: 3a34b13a88ca ("pipe: make pipe writes always wake up readers")

------------[ cut here ]------------
WARNING: CPU: 0 PID: 5830 at mm/page_alloc.c:4728 __alloc_frozen_pages_noprof+0x3c5/0x710 mm/page_alloc.c:4728
Modules linked in:
CPU: 0 UID: 0 PID: 5830 Comm: syz-executor405 Not tainted 6.13.0-rc1-next-20241205-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:__alloc_frozen_pages_noprof+0x3c5/0x710 mm/page_alloc.c:4728
Code: ff df 0f 85 09 01 00 00 44 89 e9 81 e1 7f ff ff ff a9 00 00 04 00 41 0f 44 cd 41 89 cd e9 f9 00 00 00 c6 05 87 3a 0c 0e 01 90 <0f> 0b 90 41 83 fc 0a 0f 86 13 fd ff ff 45 31 e4 48 c7 44 24 20 0e
RSP: 0018:ffffc90003e8f940 EFLAGS: 00010246
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90003e8f9c8
RBP: ffffc90003e8fa50 R08: ffffc90003e8f9c7 R09: 0000000000000000
R10: ffffc90003e8f9a0 R11: fffff520007d1f39 R12: 0000000000000020
R13: 0000000000040d40 R14: 1ffff920007d1f30 R15: 1ffff920007d1f2c
FS:  0000555587715480(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001000 CR3: 000000003352e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __alloc_pages_noprof+0xa/0x30 mm/page_alloc.c:4786
 __alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
 alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
 ___kmalloc_large_node+0x8b/0x1d0 mm/slub.c:4228
 __kmalloc_large_node_noprof+0x1a/0x80 mm/slub.c:4255
 __do_kmalloc_node mm/slub.c:4271 [inline]
 __kmalloc_noprof+0x339/0x4c0 mm/slub.c:4295
 kmalloc_noprof include/linux/slab.h:905 [inline]
 kzalloc_noprof include/linux/slab.h:1037 [inline]
 v9fs_fid_get_acl+0x4f/0x100 fs/9p/acl.c:32
 __v9fs_get_acl fs/9p/acl.c:66 [inline]
 v9fs_get_acl+0x96/0x350 fs/9p/acl.c:92
 v9fs_qid_iget_dotl fs/9p/vfs_inode_dotl.c:131 [inline]
 v9fs_inode_from_fid_dotl+0x22d/0x2c0 fs/9p/vfs_inode_dotl.c:154
 v9fs_get_new_inode_from_fid fs/9p/v9fs.h:251 [inline]
 v9fs_mount+0x718/0xa90 fs/9p/vfs_super.c:142
 legacy_get_tree+0xee/0x190 fs/fs_context.c:662
 vfs_get_tree+0x90/0x2b0 fs/super.c:1814
 do_new_mount+0x2be/0xb40 fs/namespace.c:3507
 do_mount fs/namespace.c:3847 [inline]
 __do_sys_mount fs/namespace.c:4057 [inline]
 __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4034
 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: 0033:0x7f05fcd17de9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 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:00007ffc85e9b418 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f05fcd17de9
RDX: 0000000020000b80 RSI: 00000000200003c0 RDI: 0000000000000000
RBP: 000000000000ec55 R08: 0000000020000580 R09: 00007ffc85e9b450
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc85e9b450
R13: 00007ffc85e9b43c R14: 431bde82d7b634db R15: 00007f05fcd60087
 </TASK>


---
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