From: syzbot <syzbot+1fc6f64c40a9d143cfb6@syzkaller.appspotmail.com>
To: linux-kernel@vger.kernel.org, lizhi.xu@windriver.com,
syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [mm?] BUG: stack guard page was hit in v9fs_file_read_iter
Date: Wed, 06 Nov 2024 20:23:02 -0800 [thread overview]
Message-ID: <672c40a6.050a0220.350062.0287.GAE@google.com> (raw)
In-Reply-To: <20241107041020.3067059-1-lizhi.xu@windriver.com>
Hello,
syzbot has tested the proposed patch but the reproducer is still triggering an issue:
BUG: stack guard page was hit in v9fs_file_read_iter
BUG: TASK stack guard page was hit at ffffc9000e0e7ff8 (stack is ffffc9000e0e8000..ffffc9000e0f0000)
Oops: stack guard page: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 3 UID: 0 PID: 9051 Comm: syz.2.783 Not tainted 6.12.0-rc6-syzkaller-gff7afaeca1a1-dirty #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:kasan_check_range+0x1a/0x1a0 mm/kasan/generic.c:188
Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 50 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 <53> 0f 82 c6 00 00 00 48 b8 ff ff ff ff ff 7f ff ff 48 39 f8 0f 83
RSP: 0018:ffffc9000e0e8000 EFLAGS: 00010086
RAX: ffffc9000e0e80e8 RBX: ffffc9000e0e8088 RCX: ffffffff813d6ebe
RDX: 0000000000000001 RSI: 0000000000000060 RDI: ffffc9000e0e8088
RBP: 0000000000000060 R08: 0000000000000001 R09: 0000000000000000
R10: ffff888050fd0d48 R11: 0000000000000000 R12: 0000000000000000
R13: ffffc9000e0e8148 R14: ffffc9000e0e8088 R15: ffffc9000e0e80b0
FS: 00007fee299f36c0(0000) GS:ffff88806a900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc9000e0e7ff8 CR3: 000000004eb82000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<#DF>
</#DF>
<TASK>
__asan_memset+0x23/0x50 mm/kasan/shadow.c:84
__unwind_start+0x2e/0x7f0 arch/x86/kernel/unwind_orc.c:688
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0x74/0x100 arch/x86/kernel/stacktrace.c:24
stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:319 [inline]
__kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:345
kasan_slab_alloc include/linux/kasan.h:247 [inline]
slab_post_alloc_hook mm/slub.c:4085 [inline]
slab_alloc_node mm/slub.c:4134 [inline]
kmem_cache_alloc_noprof+0x121/0x2f0 mm/slub.c:4141
radix_tree_node_alloc.constprop.0+0x1e8/0x350 lib/radix-tree.c:253
idr_get_free+0x528/0xa40 lib/radix-tree.c:1506
idr_alloc_u32+0x191/0x2f0 lib/idr.c:46
idr_alloc+0xc1/0x130 lib/idr.c:87
p9_tag_alloc+0x394/0x870 net/9p/client.c:321
p9_client_prepare_req+0x19f/0x4d0 net/9p/client.c:644
p9_client_zc_rpc.constprop.0+0x105/0x880 net/9p/client.c:793
p9_client_read_once+0x443/0x820 net/9p/client.c:1570
p9_client_read+0x13f/0x1b0 net/9p/client.c:1534
v9fs_issue_read+0x115/0x310 fs/9p/vfs_addr.c:74
netfs_retry_read_subrequests fs/netfs/read_retry.c:60 [inline]
netfs_retry_reads+0x153a/0x1d00 fs/netfs/read_retry.c:232
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
netfs_rreq_assess+0x5eb/0x890 fs/netfs/read_collect.c:372
netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:408
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+0x12f6/0x19b0 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
do_iter_readv_writev+0x614/0x7f0 fs/read_write.c:832
vfs_readv+0x4cf/0x890 fs/read_write.c:1025
do_preadv fs/read_write.c:1142 [inline]
__do_sys_preadv fs/read_write.c:1192 [inline]
__se_sys_preadv fs/read_write.c:1187 [inline]
__x64_sys_preadv+0x22d/0x310 fs/read_write.c:1187
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: 0033:0x7fee28b7e719
Code: ff ff 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fee299f3038 EFLAGS: 00000246 ORIG_RAX: 0000000000000127
RAX: ffffffffffffffda RBX: 00007fee28d36058 RCX: 00007fee28b7e719
RDX: 0000000000000001 RSI: 00000000200015c0 RDI: 0000000000000003
RBP: 00007fee28bf139e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fee28d36058 R15: 00007fffcb1ce608
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:kasan_check_range+0x1a/0x1a0 mm/kasan/generic.c:188
Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 50 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 <53> 0f 82 c6 00 00 00 48 b8 ff ff ff ff ff 7f ff ff 48 39 f8 0f 83
RSP: 0018:ffffc9000e0e8000 EFLAGS: 00010086
RAX: ffffc9000e0e80e8 RBX: ffffc9000e0e8088 RCX: ffffffff813d6ebe
RDX: 0000000000000001 RSI: 0000000000000060 RDI: ffffc9000e0e8088
RBP: 0000000000000060 R08: 0000000000000001 R09: 0000000000000000
R10: ffff888050fd0d48 R11: 0000000000000000 R12: 0000000000000000
R13: ffffc9000e0e8148 R14: ffffc9000e0e8088 R15: ffffc9000e0e80b0
FS: 00007fee299f36c0(0000) GS:ffff88806a900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc9000e0e7ff8 CR3: 000000004eb82000 CR4: 0000000000352ef0
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: 90 nop
7: 90 nop
8: 90 nop
9: 90 nop
a: 90 nop
b: 90 nop
c: 90 nop
d: 90 nop
e: 90 nop
f: 90 nop
10: 66 0f 1f 00 nopw (%rax)
14: 48 85 f6 test %rsi,%rsi
17: 0f 84 50 01 00 00 je 0x16d
1d: 48 89 f8 mov %rdi,%rax
20: 41 54 push %r12
22: 44 0f b6 c2 movzbl %dl,%r8d
26: 48 01 f0 add %rsi,%rax
29: 55 push %rbp
* 2a: 53 push %rbx <-- trapping instruction
2b: 0f 82 c6 00 00 00 jb 0xf7
31: 48 b8 ff ff ff ff ff movabs $0xffff7fffffffffff,%rax
38: 7f ff ff
3b: 48 39 f8 cmp %rdi,%rax
3e: 0f .byte 0xf
3f: 83 .byte 0x83
Tested on:
commit: ff7afaec Merge tag 'nfs-for-6.12-3' of git://git.linux..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=15134d87980000
kernel config: https://syzkaller.appspot.com/x/.config?x=c0b2fb415081f288
dashboard link: https://syzkaller.appspot.com/bug?extid=1fc6f64c40a9d143cfb6
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
patch: https://syzkaller.appspot.com/x/patch.diff?x=14f73d5f980000
next parent reply other threads:[~2024-11-07 4:23 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20241107041020.3067059-1-lizhi.xu@windriver.com>
2024-11-07 4:23 ` syzbot [this message]
[not found] <20241108021849.2997512-1-lizhi.xu@windriver.com>
2024-11-08 2:36 ` syzbot
[not found] <20241108014747.2901141-1-lizhi.xu@windriver.com>
2024-11-08 1:54 ` syzbot
[not found] <20241107093553.135565-1-lizhi.xu@windriver.com>
2024-11-07 9:53 ` syzbot
[not found] <20241107055816.3307082-1-lizhi.xu@windriver.com>
2024-11-07 6:16 ` syzbot
[not found] <20241107031237.2751625-1-lizhi.xu@windriver.com>
2024-11-07 3:25 ` syzbot
2024-11-06 14:08 syzbot
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