From: syzbot <syzbot+0f3afa93b91202f21939@syzkaller.appspotmail.com>
To: davem@davemloft.net, edumazet@google.com,
johannes@sipsolutions.net, kuba@kernel.org,
linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org,
netdev@vger.kernel.org, pabeni@redhat.com,
syzkaller-bugs@googlegroups.com
Subject: [syzbot] [wireless?] KMSAN: uninit-value in cfg80211_inform_bss_frame_data
Date: Wed, 24 Jul 2024 02:56:27 -0700 [thread overview]
Message-ID: <000000000000b6d882061dfb4aa6@google.com> (raw)
Hello,
syzbot found the following issue on:
HEAD commit: 933069701c1b Merge tag '6.11-rc-smb3-server-fixes' of git:..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=106cf811980000
kernel config: https://syzkaller.appspot.com/x/.config?x=c062b3d00b275b52
dashboard link: https://syzkaller.appspot.com/bug?extid=0f3afa93b91202f21939
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/11dcaf5ed4bb/disk-93306970.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/6b2d786e6c09/vmlinux-93306970.xz
kernel image: https://storage.googleapis.com/syzbot-assets/c6cd729a2bbd/bzImage-93306970.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+0f3afa93b91202f21939@syzkaller.appspotmail.com
=====================================================
BUG: KMSAN: uninit-value in cfg80211_find_elem_match net/wireless/scan.c:1364 [inline]
BUG: KMSAN: uninit-value in cfg80211_find_elem include/net/cfg80211.h:6858 [inline]
BUG: KMSAN: uninit-value in cfg80211_inform_bss_frame_data+0x3e3/0x9e0 net/wireless/scan.c:3225
cfg80211_find_elem_match net/wireless/scan.c:1364 [inline]
cfg80211_find_elem include/net/cfg80211.h:6858 [inline]
cfg80211_inform_bss_frame_data+0x3e3/0x9e0 net/wireless/scan.c:3225
ieee80211_bss_info_update+0x900/0xad0 net/mac80211/scan.c:226
ieee80211_scan_rx+0x8f6/0xbd0 net/mac80211/scan.c:340
__ieee80211_rx_handle_packet net/mac80211/rx.c:5225 [inline]
ieee80211_rx_list+0x55c9/0x6690 net/mac80211/rx.c:5462
ieee80211_rx_napi+0x84/0x3f0 net/mac80211/rx.c:5485
ieee80211_rx include/net/mac80211.h:5124 [inline]
ieee80211_handle_queued_frames+0x1a8/0x340 net/mac80211/main.c:439
ieee80211_tasklet_handler+0x25/0x30 net/mac80211/main.c:458
tasklet_action_common+0x395/0xd50 kernel/softirq.c:785
tasklet_action+0x2d/0x40 kernel/softirq.c:811
handle_softirqs+0x1ce/0x800 kernel/softirq.c:554
__do_softirq+0x14/0x1a kernel/softirq.c:588
do_softirq+0x9a/0x100 kernel/softirq.c:455
__local_bh_enable_ip+0x9f/0xb0 kernel/softirq.c:382
local_bh_enable include/linux/bottom_half.h:33 [inline]
rcu_read_unlock_bh include/linux/rcupdate.h:908 [inline]
__dev_queue_xmit+0x2692/0x5610 net/core/dev.c:4450
dev_queue_xmit include/linux/netdevice.h:3105 [inline]
__netlink_deliver_tap_skb net/netlink/af_netlink.c:307 [inline]
__netlink_deliver_tap+0x84c/0xc90 net/netlink/af_netlink.c:325
netlink_deliver_tap net/netlink/af_netlink.c:338 [inline]
__netlink_sendskb net/netlink/af_netlink.c:1275 [inline]
netlink_sendskb+0x23c/0x270 net/netlink/af_netlink.c:1284
netlink_unicast+0x70e/0x1260 net/netlink/af_netlink.c:1372
nlmsg_unicast include/net/netlink.h:1158 [inline]
netlink_ack+0xb04/0xe80 net/netlink/af_netlink.c:2512
netlink_rcv_skb+0x510/0x650 net/netlink/af_netlink.c:2556
genl_rcv+0x40/0x60 net/netlink/genetlink.c:1219
netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
netlink_unicast+0xf52/0x1260 net/netlink/af_netlink.c:1357
netlink_sendmsg+0x10da/0x11e0 net/netlink/af_netlink.c:1901
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x30f/0x380 net/socket.c:745
__sys_sendto+0x685/0x830 net/socket.c:2204
__do_sys_sendto net/socket.c:2216 [inline]
__se_sys_sendto net/socket.c:2212 [inline]
__x64_sys_sendto+0x125/0x1d0 net/socket.c:2212
x64_sys_call+0x3799/0x3c10 arch/x86/include/generated/asm/syscalls_64.h:45
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Uninit was created at:
slab_post_alloc_hook mm/slub.c:3994 [inline]
slab_alloc_node mm/slub.c:4037 [inline]
kmem_cache_alloc_node_noprof+0x6bf/0xb80 mm/slub.c:4080
kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:583
__alloc_skb+0x363/0x7b0 net/core/skbuff.c:674
alloc_skb include/linux/skbuff.h:1320 [inline]
hwsim_cloned_frame_received_nl+0x311/0x1360 drivers/net/wireless/virtual/mac80211_hwsim.c:5850
genl_family_rcv_msg_doit net/netlink/genetlink.c:1115 [inline]
genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline]
genl_rcv_msg+0x1214/0x12c0 net/netlink/genetlink.c:1210
netlink_rcv_skb+0x375/0x650 net/netlink/af_netlink.c:2550
genl_rcv+0x40/0x60 net/netlink/genetlink.c:1219
netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
netlink_unicast+0xf52/0x1260 net/netlink/af_netlink.c:1357
netlink_sendmsg+0x10da/0x11e0 net/netlink/af_netlink.c:1901
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x30f/0x380 net/socket.c:745
__sys_sendto+0x685/0x830 net/socket.c:2204
__do_sys_sendto net/socket.c:2216 [inline]
__se_sys_sendto net/socket.c:2212 [inline]
__x64_sys_sendto+0x125/0x1d0 net/socket.c:2212
x64_sys_call+0x3799/0x3c10 arch/x86/include/generated/asm/syscalls_64.h:45
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
CPU: 1 UID: 0 PID: 9452 Comm: syz.4.940 Not tainted 6.10.0-syzkaller-11840-g933069701c1b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
=====================================================
---
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reply other threads:[~2024-07-24 9:56 UTC|newest]
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