netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'.
==================================================================
BUG: KASAN: slab-out-of-bounds in do_csum+0x44/0x254 arch/arm64/lib/csum.c:39
Read of size 4294967236 at addr ffff0000c71d803c by task syz-executor.1/6189

CPU: 0 PID: 6189 Comm: syz-executor.1 Not tainted 6.4.0-rc3-syzkaller-geb0f1697d729 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:233
 show_stack+0x2c/0x44 arch/arm64/kernel/stacktrace.c:240
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:351 [inline]
 print_report+0x174/0x514 mm/kasan/report.c:462
 kasan_report+0xd4/0x130 mm/kasan/report.c:572
 kasan_check_range+0x264/0x2a4 mm/kasan/generic.c:187
 __kasan_check_read+0x20/0x30 mm/kasan/shadow.c:31
 do_csum+0x44/0x254 arch/arm64/lib/csum.c:39
 csum_partial+0x30/0x58 lib/checksum.c:128
 gso_make_checksum include/linux/skbuff.h:4918 [inline]
 __udp_gso_segment+0xaf4/0x1bc4 net/ipv4/udp_offload.c:332
 udp4_ufo_fragment+0x428/0x758 net/ipv4/udp_offload.c:392
 inet_gso_segment+0x4f0/0x1118 net/ipv4/af_inet.c:1396
 skb_mac_gso_segment+0x2b4/0x5b0 net/core/gro.c:141
 __skb_gso_segment+0x250/0x3d0 net/core/dev.c:3401
 skb_gso_segment include/linux/netdevice.h:4859 [inline]
 validate_xmit_skb+0x364/0xdbc net/core/dev.c:3659
 __dev_queue_xmit+0x110c/0x3318 net/core/dev.c:4236
 dev_queue_xmit include/linux/netdevice.h:3085 [inline]
 br_dev_queue_push_xmit+0x570/0x70c net/bridge/br_forward.c:53
 NF_HOOK+0x35c/0x408 include/linux/netfilter.h:303
 br_forward_finish+0xd0/0x118 net/bridge/br_forward.c:66
 NF_HOOK+0x35c/0x408 include/linux/netfilter.h:303
 __br_forward+0x2ec/0x44c net/bridge/br_forward.c:115
 deliver_clone net/bridge/br_forward.c:131 [inline]
 maybe_deliver+0xc8/0x160 net/bridge/br_forward.c:189
 br_flood+0x2d0/0x420 net/bridge/br_forward.c:233
 br_dev_xmit+0xe68/0x14ec
 __netdev_start_xmit include/linux/netdevice.h:4915 [inline]
 netdev_start_xmit include/linux/netdevice.h:4929 [inline]
 xmit_one net/core/dev.c:3578 [inline]
 dev_hard_start_xmit+0x240/0x8ac net/core/dev.c:3594
 __dev_queue_xmit+0x167c/0x3318 net/core/dev.c:4244
 dev_queue_xmit include/linux/netdevice.h:3085 [inline]
 packet_xmit+0x6c/0x318 net/packet/af_packet.c:276
 packet_snd net/packet/af_packet.c:3081 [inline]
 packet_sendmsg+0x376c/0x4c98 net/packet/af_packet.c:3113
 sock_sendmsg_nosec net/socket.c:724 [inline]
 sock_sendmsg net/socket.c:747 [inline]
 __sys_sendto+0x3b4/0x538 net/socket.c:2144
 __do_sys_sendto net/socket.c:2156 [inline]
 __se_sys_sendto net/socket.c:2152 [inline]
 __arm64_sys_sendto+0xd8/0xf8 net/socket.c:2152
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:193
 el0_svc+0x4c/0x15c arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591

Allocated by task 6189:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4c/0x7c mm/kasan/common.c:52
 kasan_save_alloc_info+0x24/0x30 mm/kasan/generic.c:510
 ____kasan_kmalloc mm/kasan/common.c:374 [inline]
 __kasan_kmalloc+0xac/0xc4 mm/kasan/common.c:383
 kasan_kmalloc include/linux/kasan.h:196 [inline]
 __do_kmalloc_node mm/slab_common.c:966 [inline]
 __kmalloc_node_track_caller+0xd0/0x1c0 mm/slab_common.c:986
 kmalloc_reserve+0x120/0x240 net/core/skbuff.c:585
 __alloc_skb+0x1c8/0x3d8 net/core/skbuff.c:654
 skb_segment+0xa80/0x32f0 net/core/skbuff.c:4516
 __udp_gso_segment+0x5d0/0x1bc4 net/ipv4/udp_offload.c:290
 udp4_ufo_fragment+0x428/0x758 net/ipv4/udp_offload.c:392
 inet_gso_segment+0x4f0/0x1118 net/ipv4/af_inet.c:1396
 skb_mac_gso_segment+0x2b4/0x5b0 net/core/gro.c:141
 __skb_gso_segment+0x250/0x3d0 net/core/dev.c:3401
 skb_gso_segment include/linux/netdevice.h:4859 [inline]
 validate_xmit_skb+0x364/0xdbc net/core/dev.c:3659
 __dev_queue_xmit+0x110c/0x3318 net/core/dev.c:4236
 dev_queue_xmit include/linux/netdevice.h:3085 [inline]
 br_dev_queue_push_xmit+0x570/0x70c net/bridge/br_forward.c:53
 NF_HOOK+0x35c/0x408 include/linux/netfilter.h:303
 br_forward_finish+0xd0/0x118 net/bridge/br_forward.c:66
 NF_HOOK+0x35c/0x408 include/linux/netfilter.h:303
 __br_forward+0x2ec/0x44c net/bridge/br_forward.c:115
 deliver_clone net/bridge/br_forward.c:131 [inline]
 maybe_deliver+0xc8/0x160 net/bridge/br_forward.c:189
 br_flood+0x2d0/0x420 net/bridge/br_forward.c:233
 br_dev_xmit+0xe68/0x14ec
 __netdev_start_xmit include/linux/netdevice.h:4915 [inline]
 netdev_start_xmit include/linux/netdevice.h:4929 [inline]
 xmit_one net/core/dev.c:3578 [inline]
 dev_hard_start_xmit+0x240/0x8ac net/core/dev.c:3594
 __dev_queue_xmit+0x167c/0x3318 net/core/dev.c:4244
 dev_queue_xmit include/linux/netdevice.h:3085 [inline]
 packet_xmit+0x6c/0x318 net/packet/af_packet.c:276
 packet_snd net/packet/af_packet.c:3081 [inline]
 packet_sendmsg+0x376c/0x4c98 net/packet/af_packet.c:3113
 sock_sendmsg_nosec net/socket.c:724 [inline]
 sock_sendmsg net/socket.c:747 [inline]
 __sys_sendto+0x3b4/0x538 net/socket.c:2144
 __do_sys_sendto net/socket.c:2156 [inline]
 __se_sys_sendto net/socket.c:2152 [inline]
 __arm64_sys_sendto+0xd8/0xf8 net/socket.c:2152
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:193
 el0_svc+0x4c/0x15c arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591

The buggy address belongs to the object at ffff0000c71d8000
 which belongs to the cache kmalloc-8k of size 8192
The buggy address is located 60 bytes inside of
 allocated 8192-byte region [ffff0000c71d8000, ffff0000c71da000)

The buggy address belongs to the physical page:
page:000000002a9bd5be refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1071d8
head:000000002a9bd5be order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0
anon flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 05ffc00000010200 ffff0000c0002c00 fffffc00046e8400 0000000000000005
raw: 0000000000000000 0000000000020002 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000c71d9f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff0000c71d9f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff0000c71da000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                   ^
 ffff0000c71da080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff0000c71da100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================
================================================================================
UBSAN: shift-out-of-bounds in arch/arm64/lib/csum.c:116:15
shift exponent 512 is too large for 64-bit type 'u64' (aka 'unsigned long long')
CPU: 0 PID: 6189 Comm: syz-executor.1 Tainted: G    B              6.4.0-rc3-syzkaller-geb0f1697d729 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:233
 show_stack+0x2c/0x44 arch/arm64/kernel/stacktrace.c:240
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106
 dump_stack+0x1c/0x28 lib/dump_stack.c:113
 ubsan_epilogue lib/ubsan.c:217 [inline]
 __ubsan_handle_shift_out_of_bounds+0x2f4/0x36c lib/ubsan.c:387
 do_csum+0x238/0x254 arch/arm64/lib/csum.c:116
 csum_partial+0x30/0x58 lib/checksum.c:128
 gso_make_checksum include/linux/skbuff.h:4918 [inline]
 __udp_gso_segment+0xaf4/0x1bc4 net/ipv4/udp_offload.c:332
 udp4_ufo_fragment+0x428/0x758 net/ipv4/udp_offload.c:392
 inet_gso_segment+0x4f0/0x1118 net/ipv4/af_inet.c:1396
 skb_mac_gso_segment+0x2b4/0x5b0 net/core/gro.c:141
 __skb_gso_segment+0x250/0x3d0 net/core/dev.c:3401
 skb_gso_segment include/linux/netdevice.h:4859 [inline]
 validate_xmit_skb+0x364/0xdbc net/core/dev.c:3659
 __dev_queue_xmit+0x110c/0x3318 net/core/dev.c:4236
 dev_queue_xmit include/linux/netdevice.h:3085 [inline]
 br_dev_queue_push_xmit+0x570/0x70c net/bridge/br_forward.c:53
 NF_HOOK+0x35c/0x408 include/linux/netfilter.h:303
 br_forward_finish+0xd0/0x118 net/bridge/br_forward.c:66
 NF_HOOK+0x35c/0x408 include/linux/netfilter.h:303
 __br_forward+0x2ec/0x44c net/bridge/br_forward.c:115
 deliver_clone net/bridge/br_forward.c:131 [inline]
 maybe_deliver+0xc8/0x160 net/bridge/br_forward.c:189
 br_flood+0x2d0/0x420 net/bridge/br_forward.c:233
 br_dev_xmit+0xe68/0x14ec
 __netdev_start_xmit include/linux/netdevice.h:4915 [inline]
 netdev_start_xmit include/linux/netdevice.h:4929 [inline]
 xmit_one net/core/dev.c:3578 [inline]
 dev_hard_start_xmit+0x240/0x8ac net/core/dev.c:3594
 __dev_queue_xmit+0x167c/0x3318 net/core/dev.c:4244
 dev_queue_xmit include/linux/netdevice.h:3085 [inline]
 packet_xmit+0x6c/0x318 net/packet/af_packet.c:276
 packet_snd net/packet/af_packet.c:3081 [inline]
 packet_sendmsg+0x376c/0x4c98 net/packet/af_packet.c:3113
 sock_sendmsg_nosec net/socket.c:724 [inline]
 sock_sendmsg net/socket.c:747 [inline]
 __sys_sendto+0x3b4/0x538 net/socket.c:2144
 __do_sys_sendto net/socket.c:2156 [inline]
 __se_sys_sendto net/socket.c:2152 [inline]
 __arm64_sys_sendto+0xd8/0xf8 net/socket.c:2152
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:193
 el0_svc+0x4c/0x15c arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591
================================================================================
================================================================================
UBSAN: shift-out-of-bounds in arch/arm64/lib/csum.c:116:25
shift exponent 512 is too large for 64-bit type 'u64' (aka 'unsigned long long')
CPU: 0 PID: 6189 Comm: syz-executor.1 Tainted: G    B              6.4.0-rc3-syzkaller-geb0f1697d729 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:233
 show_stack+0x2c/0x44 arch/arm64/kernel/stacktrace.c:240
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106
 dump_stack+0x1c/0x28 lib/dump_stack.c:113
 ubsan_epilogue lib/ubsan.c:217 [inline]
 __ubsan_handle_shift_out_of_bounds+0x2f4/0x36c lib/ubsan.c:387
 do_csum+0x250/0x254 arch/arm64/lib/csum.c:116
 csum_partial+0x30/0x58 lib/checksum.c:128
 gso_make_checksum include/linux/skbuff.h:4918 [inline]
 __udp_gso_segment+0xaf4/0x1bc4 net/ipv4/udp_offload.c:332
 udp4_ufo_fragment+0x428/0x758 net/ipv4/udp_offload.c:392
 inet_gso_segment+0x4f0/0x1118 net/ipv4/af_inet.c:1396
 skb_mac_gso_segment+0x2b4/0x5b0 net/core/gro.c:141
 __skb_gso_segment+0x250/0x3d0 net/core/dev.c:3401
 skb_gso_segment include/linux/netdevice.h:4859 [inline]
 validate_xmit_skb+0x364/0xdbc net/core/dev.c:3659
 __dev_queue_xmit+0x110c/0x3318 net/core/dev.c:4236
 dev_queue_xmit include/linux/netdevice.h:3085 [inline]
 br_dev_queue_push_xmit+0x570/0x70c net/bridge/br_forward.c:53
 NF_HOOK+0x35c/0x408 include/linux/netfilter.h:303
 br_forward_finish+0xd0/0x118 net/bridge/br_forward.c:66
 NF_HOOK+0x35c/0x408 include/linux/netfilter.h:303
 __br_forward+0x2ec/0x44c net/bridge/br_forward.c:115
 deliver_clone net/bridge/br_forward.c:131 [inline]
 maybe_deliver+0xc8/0x160 net/bridge/br_forward.c:189
 br_flood+0x2d0/0x420 net/bridge/br_forward.c:233
 br_dev_xmit+0xe68/0x14ec
 __netdev_start_xmit include/linux/netdevice.h:4915 [inline]
 netdev_start_xmit include/linux/netdevice.h:4929 [inline]
 xmit_one net/core/dev.c:3578 [inline]
 dev_hard_start_xmit+0x240/0x8ac net/core/dev.c:3594
 __dev_queue_xmit+0x167c/0x3318 net/core/dev.c:4244
 dev_queue_xmit include/linux/netdevice.h:3085 [inline]
 packet_xmit+0x6c/0x318 net/packet/af_packet.c:276
 packet_snd net/packet/af_packet.c:3081 [inline]
 packet_sendmsg+0x376c/0x4c98 net/packet/af_packet.c:3113
 sock_sendmsg_nosec net/socket.c:724 [inline]
 sock_sendmsg net/socket.c:747 [inline]
 __sys_sendto+0x3b4/0x538 net/socket.c:2144
 __do_sys_sendto net/socket.c:2156 [inline]
 __se_sys_sendto net/socket.c:2152 [inline]
 __arm64_sys_sendto+0xd8/0xf8 net/socket.c:2152
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:193
 el0_svc+0x4c/0x15c arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591
================================================================================