From: syzbot <syzbot+1f18c9b1bb51239d82f2@syzkaller.appspotmail.com>
To: akpm@linux-foundation.org, asmadeus@codewreck.org,
brauner@kernel.org, dhowells@redhat.com, ericvh@kernel.org,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
linux_oss@crudebyte.com, lucho@ionkov.net,
syzkaller-bugs@googlegroups.com, v9fs@lists.linux.dev
Subject: [syzbot] [v9fs?] BUG: stack guard page was hit in sys_openat
Date: Thu, 23 Jan 2025 18:49:27 -0800 [thread overview]
Message-ID: <6792ffb7.050a0220.3ab881.0005.GAE@google.com> (raw)
Hello,
syzbot found the following issue on:
HEAD commit: 9528d418de4d Merge tag 'x86_urgent_for_v6.13' of git://git..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=149252b0580000
kernel config: https://syzkaller.appspot.com/x/.config?x=d7f05e16f48c5834
dashboard link: https://syzkaller.appspot.com/bug?extid=1f18c9b1bb51239d82f2
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17808824580000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=129252b0580000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/00bcc6e6ccca/disk-9528d418.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/9a3be632c086/vmlinux-9528d418.xz
kernel image: https://storage.googleapis.com/syzbot-assets/513818683d52/bzImage-9528d418.xz
The issue was bisected to:
commit 4acb665cf4f3e5436844f17ece0a8a55ce688c7b
Author: David Howells <dhowells@redhat.com>
Date: Fri Dec 13 13:50:08 2024 +0000
netfs: Work around recursion by abandoning retry if nothing read
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=10d4b1f8580000
final oops: https://syzkaller.appspot.com/x/report.txt?x=12d4b1f8580000
console output: https://syzkaller.appspot.com/x/log.txt?x=14d4b1f8580000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+1f18c9b1bb51239d82f2@syzkaller.appspotmail.com
Fixes: 4acb665cf4f3 ("netfs: Work around recursion by abandoning retry if nothing read")
BUG: TASK stack guard page was hit at ffffc9000308ff88 (stack is ffffc90003090000..ffffc90003098000)
Oops: stack guard page: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5811 Comm: syz-executor387 Not tainted 6.13.0-rc7-syzkaller-00209-g9528d418de4d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:__lock_acquire+0x24/0x3c40 kernel/locking/lockdep.c:5077
Code: 90 90 90 90 90 90 41 57 41 56 41 89 f6 41 55 41 54 49 89 fc 55 89 d5 53 44 89 cb 48 81 ec f0 00 00 00 48 8b 84 24 28 01 00 00 <44> 89 04 24 48 c7 84 24 90 00 00 00 b3 8a b5 41 48 c7 84 24 98 00
RSP: 0018:ffffc9000308ff98 EFLAGS: 00010082
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff8880b8644c58
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: ffffffff905f7c97 R11: 0000000000000003 R12: ffff8880b8644c58
R13: ffff8880b8644c58 R14: 0000000000000000 R15: 0000000000000000
FS: 000055556c371480(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc9000308ff88 CR3: 0000000078d02000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<#DF>
</#DF>
<TASK>
lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5849
__raw_spin_trylock include/linux/spinlock_api_smp.h:90 [inline]
_raw_spin_trylock+0x63/0x80 kernel/locking/spinlock.c:138
spin_trylock include/linux/spinlock.h:361 [inline]
rmqueue_pcplist mm/page_alloc.c:3032 [inline]
rmqueue mm/page_alloc.c:3076 [inline]
get_page_from_freelist+0x350/0x2f80 mm/page_alloc.c:3473
__alloc_pages_noprof+0x223/0x25b0 mm/page_alloc.c:4753
alloc_pages_mpol_noprof+0x2c8/0x620 mm/mempolicy.c:2269
alloc_slab_page mm/slub.c:2423 [inline]
allocate_slab mm/slub.c:2589 [inline]
new_slab+0x2c9/0x410 mm/slub.c:2642
___slab_alloc+0xd7d/0x17a0 mm/slub.c:3830
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3920
__slab_alloc_node mm/slub.c:3995 [inline]
slab_alloc_node mm/slub.c:4156 [inline]
__do_kmalloc_node mm/slub.c:4297 [inline]
__kmalloc_noprof+0x2ec/0x510 mm/slub.c:4310
kmalloc_noprof include/linux/slab.h:905 [inline]
p9_fcall_init+0x97/0x260 net/9p/client.c:233
p9_tag_alloc+0x17a/0x870 net/9p/client.c:298
p9_client_prepare_req+0x19f/0x4d0 net/9p/client.c:644
p9_client_rpc+0x1c3/0xc10 net/9p/client.c:691
p9_client_read_once+0x24f/0x820 net/9p/client.c:1575
p9_client_read+0x13f/0x1b0 net/9p/client.c:1534
v9fs_issue_read+0x115/0x340 fs/9p/vfs_addr.c:76
netfs_retry_read_subrequests fs/netfs/read_retry.c:62 [inline]
netfs_retry_reads+0x1512/0x1d40 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238
netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409
netfs_dispatch_unbuffered_reads fs/netfs/direct_read.c:103 [inline]
netfs_unbuffered_read fs/netfs/direct_read.c:127 [inline]
netfs_unbuffered_read_iter_locked+0x12e1/0x19a0 fs/netfs/direct_read.c:221
netfs_unbuffered_read_iter+0xc5/0x100 fs/netfs/direct_read.c:256
v9fs_file_read_iter+0xbf/0x100 fs/9p/vfs_file.c:361
__kernel_read+0x3f1/0xb50 fs/read_write.c:523
integrity_kernel_read+0x7f/0xb0 security/integrity/iint.c:28
ima_calc_file_hash_tfm+0x2c9/0x3e0 security/integrity/ima/ima_crypto.c:480
ima_calc_file_shash security/integrity/ima/ima_crypto.c:511 [inline]
ima_calc_file_hash+0x1ba/0x490 security/integrity/ima/ima_crypto.c:568
ima_collect_measurement+0x89f/0xa40 security/integrity/ima/ima_api.c:293
process_measurement+0x1271/0x2370 security/integrity/ima/ima_main.c:372
ima_file_check+0xbd/0x100 security/integrity/ima/ima_main.c:572
security_file_post_open+0x8e/0x210 security/security.c:3121
do_open fs/namei.c:3830 [inline]
path_openat+0x1419/0x2d60 fs/namei.c:3987
do_filp_open+0x20c/0x470 fs/namei.c:4014
do_sys_openat2+0x17a/0x1e0 fs/open.c:1402
do_sys_open fs/open.c:1417 [inline]
__do_sys_openat fs/open.c:1433 [inline]
__se_sys_openat fs/open.c:1428 [inline]
__x64_sys_openat+0x175/0x210 fs/open.c:1428
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe490f95c49
Code: d8 5b c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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:00007ffd8855d5e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fe490f95c49
RDX: 0000000000020842 RSI: 000000002000c380 RDI: 00000000ffffff9c
RBP: 00007fe490fdd570 R08: 00007fe490fdd5a0 R09: 00007fe490fdd5a0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe490fdd4f5
R13: 0000000000000001 R14: 00007fe491010420 R15: 0000000000000003
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__lock_acquire+0x24/0x3c40 kernel/locking/lockdep.c:5077
Code: 90 90 90 90 90 90 41 57 41 56 41 89 f6 41 55 41 54 49 89 fc 55 89 d5 53 44 89 cb 48 81 ec f0 00 00 00 48 8b 84 24 28 01 00 00 <44> 89 04 24 48 c7 84 24 90 00 00 00 b3 8a b5 41 48 c7 84 24 98 00
RSP: 0018:ffffc9000308ff98 EFLAGS: 00010082
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff8880b8644c58
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: ffffffff905f7c97 R11: 0000000000000003 R12: ffff8880b8644c58
R13: ffff8880b8644c58 R14: 0000000000000000 R15: 0000000000000000
FS: 000055556c371480(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc9000308ff88 CR3: 0000000078d02000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 90 nop
1: 90 nop
2: 90 nop
3: 90 nop
4: 90 nop
5: 90 nop
6: 41 57 push %r15
8: 41 56 push %r14
a: 41 89 f6 mov %esi,%r14d
d: 41 55 push %r13
f: 41 54 push %r12
11: 49 89 fc mov %rdi,%r12
14: 55 push %rbp
15: 89 d5 mov %edx,%ebp
17: 53 push %rbx
18: 44 89 cb mov %r9d,%ebx
1b: 48 81 ec f0 00 00 00 sub $0xf0,%rsp
22: 48 8b 84 24 28 01 00 mov 0x128(%rsp),%rax
29: 00
* 2a: 44 89 04 24 mov %r8d,(%rsp) <-- trapping instruction
2e: 48 c7 84 24 90 00 00 movq $0x41b58ab3,0x90(%rsp)
35: 00 b3 8a b5 41
3a: 48 rex.W
3b: c7 .byte 0xc7
3c: 84 24 98 test %ah,(%rax,%rbx,4)
---
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next reply other threads:[~2025-01-24 2:49 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-24 2:49 syzbot [this message]
2025-01-24 9:38 ` [syzbot] [v9fs?] BUG: stack guard page was hit in sys_openat David Howells
2025-01-24 10:01 ` syzbot
2025-02-21 13:20 ` [syzbot] [mm?] " syzbot
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