==================================================================
BUG: KASAN: use-after-free in do_csum+0x44/0x254 arch/arm64/lib/csum.c:39
Read of size 4294967236 at addr ffff0000d3ee403c by task syz-executor.4/11969

CPU: 1 PID: 11969 Comm: syz-executor.4 Not tainted 6.4.0-rc7-syzkaller-ge40939bbfc68 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
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:4928 [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:1398
 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:4862 [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:3088 [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:4918 [inline]
 netdev_start_xmit include/linux/netdevice.h:4932 [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:3088 [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+0x138/0x244 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:191
 el0_svc+0x4c/0x160 arch/arm64/kernel/entry-common.c:647
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:665
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591

The buggy address belongs to the physical page:
page:000000000d4f9deb refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x113ee4
head:000000000d4f9deb order:2 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0x5ffc00000010000(head|node=0|zone=2|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 05ffc00000010000 0000000000000000 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000d3ee7f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff0000d3ee7f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff0000d3ee8000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                   ^
 ffff0000d3ee8080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff0000d3ee8100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================
================================================================================
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: 1 PID: 11969 Comm: syz-executor.4 Tainted: G    B              6.4.0-rc7-syzkaller-ge40939bbfc68 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
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:4928 [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:1398
 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:4862 [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:3088 [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:4918 [inline]
 netdev_start_xmit include/linux/netdevice.h:4932 [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:3088 [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+0x138/0x244 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:191
 el0_svc+0x4c/0x160 arch/arm64/kernel/entry-common.c:647
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:665
 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: 1 PID: 11969 Comm: syz-executor.4 Tainted: G    B              6.4.0-rc7-syzkaller-ge40939bbfc68 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
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:4928 [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:1398
 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:4862 [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:3088 [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:4918 [inline]
 netdev_start_xmit include/linux/netdevice.h:4932 [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:3088 [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+0x138/0x244 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:191
 el0_svc+0x4c/0x160 arch/arm64/kernel/entry-common.c:647
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:665
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591
================================================================================