================================================================== BUG: KASAN: null-ptr-deref in instrument_atomic_read_write include/linux/instrumented.h:96 [inline] BUG: KASAN: null-ptr-deref in atomic_inc_return include/linux/atomic/atomic-instrumented.h:453 [inline] BUG: KASAN: null-ptr-deref in mac802154_header_create+0x13f/0xa50 net/mac802154/iface.c:438 Write of size 4 at addr 000000000000004c by task syz.3.2113/13380 CPU: 0 UID: 0 PID: 13380 Comm: syz.3.2113 Not tainted 6.13.0-rc1-syzkaller-00236-g51db5c894300 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_report+0xe8/0x550 mm/kasan/report.c:492 kasan_report+0x143/0x180 mm/kasan/report.c:602 kasan_check_range+0x282/0x290 mm/kasan/generic.c:189 instrument_atomic_read_write include/linux/instrumented.h:96 [inline] atomic_inc_return include/linux/atomic/atomic-instrumented.h:453 [inline] mac802154_header_create+0x13f/0xa50 net/mac802154/iface.c:438 dev_hard_header include/linux/netdevice.h:3222 [inline] neigh_connected_output+0x27f/0x450 net/core/neighbour.c:1538 neigh_output include/net/neighbour.h:539 [inline] ip_finish_output2+0xe70/0x1390 net/ipv4/ip_output.c:236 ip_local_out net/ipv4/ip_output.c:130 [inline] ip_send_skb net/ipv4/ip_output.c:1510 [inline] ip_push_pending_frames+0xbf/0x150 net/ipv4/ip_output.c:1530 raw_sendmsg+0x1aad/0x2430 net/ipv4/raw.c:657 sock_sendmsg_nosec net/socket.c:711 [inline] __sock_sendmsg+0x1a6/0x270 net/socket.c:726 ____sys_sendmsg+0x52a/0x7e0 net/socket.c:2583 ___sys_sendmsg net/socket.c:2637 [inline] __sys_sendmsg+0x269/0x350 net/socket.c:2669 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f2ff3b7fed9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f2ff498b058 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f2ff3d45fa0 RCX: 00007f2ff3b7fed9 RDX: 0000000000000000 RSI: 0000000020001640 RDI: 0000000000000004 RBP: 00007f2ff3bf3cc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f2ff3d45fa0 R15: 00007ffcb5a46468 ==================================================================