===================================================== BUG: KMSAN: uninit-value in ax25cmp+0x38c/0x450 net/ax25/ax25_addr.c:119 ax25cmp+0x38c/0x450 net/ax25/ax25_addr.c:119 nr_dev_get+0x20a/0x440 net/netrom/nr_route.c:601 nr_route_frame+0x19e/0xfc0 net/netrom/nr_route.c:774 nr_xmit+0x56/0x1c0 net/netrom/nr_dev.c:144 __netdev_start_xmit include/linux/netdevice.h:4805 [inline] netdev_start_xmit include/linux/netdevice.h:4819 [inline] xmit_one+0x14e/0x5f0 net/core/dev.c:3588 dev_hard_start_xmit+0xe5/0x370 net/core/dev.c:3604 __dev_queue_xmit+0x1dec/0x31f0 net/core/dev.c:4253 dev_queue_xmit include/linux/netdevice.h:2994 [inline] raw_sendmsg+0x644/0xc00 net/ieee802154/socket.c:294 ieee802154_sock_sendmsg+0x8d/0xc0 net/ieee802154/socket.c:96 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0xabc/0xe90 net/socket.c:2492 ___sys_sendmsg+0x2a5/0x350 net/socket.c:2546 __sys_sendmmsg+0x4f1/0x960 net/socket.c:2625 __compat_sys_sendmmsg net/compat.c:361 [inline] __do_compat_sys_sendmmsg net/compat.c:368 [inline] __se_compat_sys_sendmmsg net/compat.c:365 [inline] __ia32_compat_sys_sendmmsg+0xc4/0x130 net/compat.c:365 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x95/0xf0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203 do_SYSENTER_32+0x1b/0x20 arch/x86/entry/common.c:246 entry_SYSENTER_compat_after_hwframe+0x53/0x62 Uninit was created at: slab_post_alloc_hook mm/slab.h:755 [inline] slab_alloc_node mm/slub.c:3229 [inline] __kmalloc_node_track_caller+0x86c/0x1230 mm/slub.c:4966 kmalloc_reserve net/core/skbuff.c:354 [inline] __alloc_skb+0x34a/0xd70 net/core/skbuff.c:426 alloc_skb include/linux/skbuff.h:1426 [inline] alloc_skb_with_frags+0xb9/0xb80 net/core/skbuff.c:5992 sock_alloc_send_pskb+0xaa8/0xc30 net/core/sock.c:2662 sock_alloc_send_skb include/net/sock.h:1831 [inline] raw_sendmsg+0x343/0xc00 net/ieee802154/socket.c:277 ieee802154_sock_sendmsg+0x8d/0xc0 net/ieee802154/socket.c:96 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0xabc/0xe90 net/socket.c:2492 ___sys_sendmsg+0x2a5/0x350 net/socket.c:2546 __sys_sendmmsg+0x4f1/0x960 net/socket.c:2625 __compat_sys_sendmmsg net/compat.c:361 [inline] __do_compat_sys_sendmmsg net/compat.c:368 [inline] __se_compat_sys_sendmmsg net/compat.c:365 [inline] __ia32_compat_sys_sendmmsg+0xc4/0x130 net/compat.c:365 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x95/0xf0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203 do_SYSENTER_32+0x1b/0x20 arch/x86/entry/common.c:246 entry_SYSENTER_compat_after_hwframe+0x53/0x62 CPU: 1 PID: 8201 Comm: syz-executor.4 Not tainted 5.19.0-rc3-syzkaller-30868-g4b28366af7d9 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 =====================================================