BUG: stack guard page was hit in sys_lchown (5)

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syzbot

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Apr 27, 2022, 11:50:23 AM4/27/22
to syzkaller-a...@googlegroups.com
Hello,

syzbot found the following issue on:

HEAD commit: e08dd85cc95e ANDROID: fix up abi issue with struct snd_pcm..
git tree: android12-5.10-lts
console output: https://syzkaller.appspot.com/x/log.txt?x=1682a38cf00000
kernel config: https://syzkaller.appspot.com/x/.config?x=7d4273ae486e6ab0
dashboard link: https://syzkaller.appspot.com/bug?extid=90d11289761e92df248b
compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=159b1fe2f00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=134f13c0f00000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+90d112...@syzkaller.appspotmail.com

BUG: stack guard page was hit at ffffc90000affff8 (stack is ffffc90000b00000..ffffc90000b07fff)
kernel stack overflow (double-fault): 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 365 Comm: syz-executor337 Not tainted 5.10.110-syzkaller-01300-ge08dd85cc95e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__unwind_start+0x8/0x420 arch/x86/kernel/unwind_frame.c:365
Code: 4d fe ff ff e8 59 39 73 00 e9 43 fe ff ff e8 cf 32 5d 03 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 55 48 89 e5 41 57 41 56 <41> 55 41 54 53 48 83 ec 50 48 89 4d d0 49 89 d7 49 89 f4 49 89 fd
RSP: 0018:ffffc90000b00000 EFLAGS: 00010246
RAX: ffff8881077913c0 RBX: 1ffff92000160022 RCX: ffffc90000b000b0
RDX: 0000000000000000 RSI: ffff8881077913c0 RDI: ffffc90000b00020
RBP: ffffc90000b00010 R08: dffffc0000000000 R09: ffffc90000b001b0
R10: 0000000000000006 R11: 0000000000000000 R12: ffff8881077913c0
R13: ffffffff815b4c30 R14: ffffc90000b00100 R15: 0000000000000000
FS: 0000555556cad300(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc90000affff8 CR3: 00000001077fb000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
unwind_start arch/x86/include/asm/unwind.h:60 [inline]
arch_stack_walk+0xdc/0x140 arch/x86/kernel/stacktrace.c:24
stack_trace_save+0x12d/0x1f0 kernel/stacktrace.c:121
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:428 [inline]
__kasan_slab_alloc+0xb2/0xe0 mm/kasan/common.c:461
kasan_slab_alloc include/linux/kasan.h:259 [inline]
slab_post_alloc_hook mm/slab.h:583 [inline]
slab_alloc_node mm/slub.c:2956 [inline]
slab_alloc mm/slub.c:2964 [inline]
kmem_cache_alloc+0x16c/0x300 mm/slub.c:2969
__d_alloc+0x2d/0x6b0 fs/dcache.c:1709
d_alloc fs/dcache.c:1788 [inline]
d_alloc_parallel+0xe6/0x1330 fs/dcache.c:2540
__lookup_slow+0x14e/0x400 fs/namei.c:1613
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_slow+0x5a/0x80 fs/namei.c:1645
walk_component+0x425/0x5a0 fs/namei.c:1940
lookup_last fs/namei.c:2389 [inline]
path_lookupat+0x18d/0x460 fs/namei.c:2413
filename_lookup+0x23f/0x6c0 fs/namei.c:2446
user_path_at_empty+0x40/0x50 fs/namei.c:2726
user_path_at include/linux/namei.h:59 [inline]
do_fchownat+0xec/0x250 fs/open.c:699
__do_sys_lchown fs/open.c:730 [inline]
__se_sys_lchown fs/open.c:728 [inline]
__x64_sys_lchown+0x85/0x90 fs/open.c:728
do_syscall_64+0x34/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fafed60fb99
Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc848a0358 EFLAGS: 00000246 ORIG_RAX: 000000000000005e
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fafed60fb99
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000140
RBP: 00007fafed5d3d40 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fafed5d3dd0
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
---[ end trace 5fbd24641628bfc1 ]---
RIP: 0010:__unwind_start+0x8/0x420 arch/x86/kernel/unwind_frame.c:365
Code: 4d fe ff ff e8 59 39 73 00 e9 43 fe ff ff e8 cf 32 5d 03 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 55 48 89 e5 41 57 41 56 <41> 55 41 54 53 48 83 ec 50 48 89 4d d0 49 89 d7 49 89 f4 49 89 fd
RSP: 0018:ffffc90000b00000 EFLAGS: 00010246
RAX: ffff8881077913c0 RBX: 1ffff92000160022 RCX: ffffc90000b000b0
RDX: 0000000000000000 RSI: ffff8881077913c0 RDI: ffffc90000b00020
RBP: ffffc90000b00010 R08: dffffc0000000000 R09: ffffc90000b001b0
R10: 0000000000000006 R11: 0000000000000000 R12: ffff8881077913c0
R13: ffffffff815b4c30 R14: ffffc90000b00100 R15: 0000000000000000
FS: 0000555556cad300(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc90000affff8 CR3: 00000001077fb000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 4 bytes skipped:
0: e8 59 39 73 00 callq 0x73395e
5: e9 43 fe ff ff jmpq 0xfffffe4d
a: e8 cf 32 5d 03 callq 0x35d32de
f: 66 66 2e 0f 1f 84 00 data16 nopw %cs:0x0(%rax,%rax,1)
16: 00 00 00 00
1a: 0f 1f 40 00 nopl 0x0(%rax)
1e: 55 push %rbp
1f: 48 89 e5 mov %rsp,%rbp
22: 41 57 push %r15
24: 41 56 push %r14
* 26: 41 55 push %r13 <-- trapping instruction
28: 41 54 push %r12
2a: 53 push %rbx
2b: 48 83 ec 50 sub $0x50,%rsp
2f: 48 89 4d d0 mov %rcx,-0x30(%rbp)
33: 49 89 d7 mov %rdx,%r15
36: 49 89 f4 mov %rsi,%r12
39: 49 89 fd mov %rdi,%r13


---
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Tadeusz Struk

unread,
May 4, 2022, 12:07:03 PM5/4/22
to syzbot+90d112...@syzkaller.appspotmail.com, syzkaller
#syz dup: BUG: stack guard page was hit in file_open

Tadeusz Struk

unread,
May 5, 2022, 4:42:41 PM5/5/22
to syzbot, syzkaller-a...@googlegroups.com
#syz dup: BUG: stack guard page was hit in file_open

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Thanks,
Tadeusz
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