Messages in this thread | | | Date | Thu, 21 Sep 2023 02:36:53 -0700 | Subject | [syzbot] [tipc?] KMSAN: uninit-value in tipc_nl_node_reset_link_stats | From | syzbot <> |
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Hello,
syzbot found the following issue on:
HEAD commit: e42bebf6db29 Merge tag 'efi-fixes-for-v6.6-1' of git://git.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=13627ea0680000 kernel config: https://syzkaller.appspot.com/x/.config?x=754d6383bae8bc99 dashboard link: https://syzkaller.appspot.com/bug?extid=5138ca807af9d2b42574 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=11bbea38680000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1692689c680000
Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/dc8a44662519/disk-e42bebf6.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/9ee44b8b9dd0/vmlinux-e42bebf6.xz kernel image: https://storage.googleapis.com/syzbot-assets/d5d5e45bf97a/bzImage-e42bebf6.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+5138ca807af9d2b42574@syzkaller.appspotmail.com
===================================================== BUG: KMSAN: uninit-value in strlen lib/string.c:418 [inline] BUG: KMSAN: uninit-value in strstr+0xb8/0x2f0 lib/string.c:756 strlen lib/string.c:418 [inline] strstr+0xb8/0x2f0 lib/string.c:756 tipc_nl_node_reset_link_stats+0x3ea/0xb50 net/tipc/node.c:2595 genl_family_rcv_msg_doit net/netlink/genetlink.c:971 [inline] genl_family_rcv_msg net/netlink/genetlink.c:1051 [inline] genl_rcv_msg+0x11ec/0x1290 net/netlink/genetlink.c:1066 netlink_rcv_skb+0x371/0x650 net/netlink/af_netlink.c:2545 genl_rcv+0x40/0x60 net/netlink/genetlink.c:1075 netlink_unicast_kernel net/netlink/af_netlink.c:1342 [inline] netlink_unicast+0xf47/0x1250 net/netlink/af_netlink.c:1368 netlink_sendmsg+0x1238/0x13d0 net/netlink/af_netlink.c:1910 sock_sendmsg_nosec net/socket.c:730 [inline] sock_sendmsg net/socket.c:753 [inline] ____sys_sendmsg+0x9c2/0xd60 net/socket.c:2541 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2595 __sys_sendmsg net/socket.c:2624 [inline] __do_sys_sendmsg net/socket.c:2633 [inline] __se_sys_sendmsg net/socket.c:2631 [inline] __x64_sys_sendmsg+0x307/0x490 net/socket.c:2631 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd
Uninit was created at: slab_post_alloc_hook+0x12f/0xb70 mm/slab.h:767 slab_alloc_node mm/slub.c:3478 [inline] kmem_cache_alloc_node+0x577/0xa80 mm/slub.c:3523 kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:559 __alloc_skb+0x318/0x740 net/core/skbuff.c:650 alloc_skb include/linux/skbuff.h:1286 [inline] netlink_alloc_large_skb net/netlink/af_netlink.c:1214 [inline] netlink_sendmsg+0xb34/0x13d0 net/netlink/af_netlink.c:1885 sock_sendmsg_nosec net/socket.c:730 [inline] sock_sendmsg net/socket.c:753 [inline] ____sys_sendmsg+0x9c2/0xd60 net/socket.c:2541 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2595 __sys_sendmsg net/socket.c:2624 [inline] __do_sys_sendmsg net/socket.c:2633 [inline] __se_sys_sendmsg net/socket.c:2631 [inline] __x64_sys_sendmsg+0x307/0x490 net/socket.c:2631 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd
CPU: 0 PID: 4999 Comm: syz-executor394 Not tainted 6.6.0-rc1-syzkaller-00125-ge42bebf6db29 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 =====================================================
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