===================================================== BUG: KMSAN: uninit-value in arch_atomic64_inc arch/x86/include/asm/atomic64_64.h:88 [inline] BUG: KMSAN: uninit-value in arch_atomic_long_inc include/linux/atomic/atomic-long.h:161 [inline] BUG: KMSAN: uninit-value in atomic_long_inc include/linux/atomic/atomic-instrumented.h:1429 [inline] BUG: KMSAN: uninit-value in icmp_out_count+0xf8/0x130 net/ipv4/icmp.c:336 arch_atomic64_inc arch/x86/include/asm/atomic64_64.h:88 [inline] arch_atomic_long_inc include/linux/atomic/atomic-long.h:161 [inline] atomic_long_inc include/linux/atomic/atomic-instrumented.h:1429 [inline] icmp_out_count+0xf8/0x130 net/ipv4/icmp.c:336 __ip_make_skb+0x2673/0x2be0 net/ipv4/ip_output.c:1574 ip_finish_skb include/net/ip.h:242 [inline] ip_push_pending_frames+0x9a/0x420 net/ipv4/ip_output.c:1601 raw_sendmsg+0x2c06/0x2e50 net/ipv4/raw.c:645 inet_sendmsg+0x15f/0x1d0 net/ipv4/af_inet.c:828 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0xe11/0x1250 net/socket.c:2479 ___sys_sendmsg+0x4e6/0x580 net/socket.c:2533 __sys_sendmsg net/socket.c:2562 [inline] __do_sys_sendmsg net/socket.c:2571 [inline] __se_sys_sendmsg net/socket.c:2569 [inline] __x64_sys_sendmsg+0x3f0/0x570 net/socket.c:2569 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+0x271/0xf70 mm/slab.h:766 slab_alloc_node mm/slub.c:3452 [inline] __kmem_cache_alloc_node+0x68c/0xac0 mm/slub.c:3491 __do_kmalloc_node mm/slab_common.c:967 [inline] __kmalloc_node_track_caller+0x3df/0x710 mm/slab_common.c:988 kmalloc_reserve net/core/skbuff.c:492 [inline] __alloc_skb+0x56e/0xad0 net/core/skbuff.c:565 alloc_skb include/linux/skbuff.h:1270 [inline] __ip_append_data+0x50b7/0x6c90 net/ipv4/ip_output.c:1126 ip_append_data+0x3b4/0x460 net/ipv4/ip_output.c:1343 raw_sendmsg+0x2ab9/0x2e50 net/ipv4/raw.c:639 inet_sendmsg+0x15f/0x1d0 net/ipv4/af_inet.c:828 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0xe11/0x1250 net/socket.c:2479 ___sys_sendmsg+0x4e6/0x580 net/socket.c:2533 __sys_sendmsg net/socket.c:2562 [inline] __do_sys_sendmsg net/socket.c:2571 [inline] __se_sys_sendmsg net/socket.c:2569 [inline] __x64_sys_sendmsg+0x3f0/0x570 net/socket.c:2569 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: 1 PID: 27179 Comm: syz-executor.2 Tainted: G W 6.2.0-syzkaller-81151-g224e1375d540 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 =====================================================