linux-kernel - [syzbot] [modules?] kernel panic: stack is corrupted in call_usermodehelper

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Message-ID: <000000000000eb77d60620de6758@google.com>
Date: Thu, 29 Aug 2024 20:44:18 -0700
From: syzbot <syzbot+14d9438422f594f856bd@...kaller.appspotmail.com>
To: linux-kernel@...r.kernel.org, linux-modules@...r.kernel.org, 
	mcgrof@...nel.org, syzkaller-bugs@...glegroups.com
Subject: [syzbot] [modules?] kernel panic: stack is corrupted in call_usermodehelper_exec

Hello,

syzbot found the following issue on:

HEAD commit:    3b9dfd9e5936 Merge tag 'hwmon-for-v6.11-rc6' of git://git...
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=141ab933980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=d76559f775f44ba6
dashboard link: https://syzkaller.appspot.com/bug?extid=14d9438422f594f856bd
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=17d8c77b980000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=11034a35980000

Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-3b9dfd9e.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/3dab2f917732/vmlinux-3b9dfd9e.xz
kernel image: https://storage.googleapis.com/syzbot-assets/541828a1cf09/bzImage-3b9dfd9e.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/cc6a8f9d7bd9/mount_0.gz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+14d9438422f594f856bd@...kaller.appspotmail.com

Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: call_usermodehelper_exec+0x493/0x4a0
CPU: 0 UID: 0 PID: 5107 Comm: syz-executor310 Not tainted 6.11.0-rc5-syzkaller-00148-g3b9dfd9e5936 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:93 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
 panic+0x349/0x860 kernel/panic.c:354
 __stack_chk_fail+0x15/0x20 kernel/panic.c:827
 call_usermodehelper_exec+0x493/0x4a0
 call_modprobe kernel/module/kmod.c:103 [inline]
 __request_module+0x3ee/0x650 kernel/module/kmod.c:173
 ctrl_getfamily+0x28e/0x6b0 net/netlink/genetlink.c:1450
 genl_family_rcv_msg_doit net/netlink/genetlink.c:1115 [inline]
 genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline]
 genl_rcv_msg+0xb14/0xec0 net/netlink/genetlink.c:1210
 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550
 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219
 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
 netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1357
 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x221/0x270 net/socket.c:745
 __sys_sendto+0x3a4/0x4f0 net/socket.c:2204
 __do_sys_sendto net/socket.c:2216 [inline]
 __se_sys_sendto net/socket.c:2212 [inline]
 __x64_sys_sendto+0xde/0x100 net/socket.c:2212
 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: 0033:0x7fb2add42023
Code: 64 89 02 48 c7 c0 ff ff ff ff eb b7 66 2e 0f 1f 84 00 00 00 00 00 90 80 3d 81 90 09 00 00 41 89 ca 74 14 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 75 c3 0f 1f 40 00 55 48 83 ec 30 44 89 4c 24
RSP: 002b:00007ffe2a46ace8 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007ffe2a46ad90 RCX: 00007fb2add42023
RDX: 000000000000001c RSI: 00007ffe2a46ade0 RDI: 0000000000000005
RBP: 0000000000000005 R08: 00007ffe2a46ad04 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 00007ffe2a46ad58 R14: 00007ffe2a46ade0 R15: 0000000000000000
 </TASK>
Kernel Offset: disabled
Rebooting in 86400 seconds..


---
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