linux-kernel - Re: [syzbot] [wireless?] WARNING in minstrel_ht_update

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Date: Sun, 19 May 2024 04:55:27 -0700
From: syzbot <syzbot+d805aca692aded25f888@...kaller.appspotmail.com>
To: davem@...emloft.net, edumazet@...gle.com, johannes@...solutions.net, 
	kuba@...nel.org, linux-kernel@...r.kernel.org, linux-wireless@...r.kernel.org, 
	netdev@...r.kernel.org, pabeni@...hat.com, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [wireless?] WARNING in minstrel_ht_update_caps

syzbot has found a reproducer for the following issue on:

HEAD commit:    0450d2083be6 Merge tag '6.10-rc-smb-fix' of git://git.samb..
git tree:       upstream
console+strace: https://syzkaller.appspot.com/x/log.txt?x=105c75e0980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=17ffd15f654c98ba
dashboard link: https://syzkaller.appspot.com/bug?extid=d805aca692aded25f888
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=14044aa4980000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=116335dc980000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/227283491c2c/disk-0450d208.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/d5c9b39757fa/vmlinux-0450d208.xz
kernel image: https://storage.googleapis.com/syzbot-assets/9ab6928507ba/bzImage-0450d208.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+d805aca692aded25f888@...kaller.appspotmail.com

netlink: 32 bytes leftover after parsing attributes in process `syz-executor195'.
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5105 at include/net/mac80211.h:6962 rate_lowest_index include/net/mac80211.h:6962 [inline]
WARNING: CPU: 0 PID: 5105 at include/net/mac80211.h:6962 minstrel_ht_update_caps+0x44a/0x17e0 net/mac80211/rc80211_minstrel_ht.c:1733
Modules linked in:
CPU: 0 PID: 5105 Comm: syz-executor195 Not tainted 6.9.0-syzkaller-08995-g0450d2083be6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:rate_lowest_index include/net/mac80211.h:6962 [inline]
RIP: 0010:minstrel_ht_update_caps+0x44a/0x17e0 net/mac80211/rc80211_minstrel_ht.c:1733
Code: da e8 ca bc cf f9 e9 24 ff ff ff e8 80 65 7b f6 eb 17 e8 79 65 7b f6 eb 14 e8 72 65 7b f6 49 c1 fd 38 eb 0c e8 67 65 7b f6 90 <0f> 0b 90 45 31 ed 49 bf 00 00 00 00 00 fc ff df 48 8b 3c 24 4c 8b
RSP: 0018:ffffc90004d76f80 EFLAGS: 00010293
RAX: ffffffff8b1acc49 RBX: 000000000000000c RCX: ffff888022e38000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff8b1acb65 R09: ffff888078874008
R10: dffffc0000000000 R11: ffffed100f10ed49 R12: 1ffff1100456e614
R13: 0b00000000000000 R14: ffff888022b730a0 R15: 0100000000000000
FS:  000055557e7c2380(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001040 CR3: 0000000022a8a000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 rate_control_rate_init+0x3d1/0x5f0 net/mac80211/rate.c:63
 sta_apply_auth_flags+0x1b6/0x410 net/mac80211/cfg.c:1710
 sta_apply_parameters+0xe20/0x1550 net/mac80211/cfg.c:2043
 ieee80211_add_station+0x3da/0x630 net/mac80211/cfg.c:2109
 rdev_add_station+0x11d/0x2b0 net/wireless/rdev-ops.h:201
 nl80211_new_station+0x1d53/0x2550 net/wireless/nl80211.c:7624
 genl_family_rcv_msg_doit net/netlink/genetlink.c:1115 [inline]
 genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline]
 genl_rcv_msg+0xb16/0xec0 net/netlink/genetlink.c:1210
 netlink_rcv_skb+0x1e5/0x430 net/netlink/af_netlink.c:2564
 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219
 netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline]
 netlink_unicast+0x7ec/0x980 net/netlink/af_netlink.c:1361
 netlink_sendmsg+0x8e1/0xcb0 net/netlink/af_netlink.c:1905
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x223/0x270 net/socket.c:745
 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2585
 ___sys_sendmsg net/socket.c:2639 [inline]
 __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2668
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdf30f98cd9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 71 19 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:00007ffeba77eb08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fdf30f98cd9
RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000000 R08: 0000000000000006 R09: 0000000000000006
R10: 0000000000000006 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001
 </TASK>


---
If you want syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.