================================================================== BUG: KASAN: slab-out-of-bounds in do_csum+0x44/0x254 arch/arm64/lib/csum.c:39 Read of size 4294967236 at addr ffff00012a85b03c by task syz-executor.3/6492 CPU: 1 PID: 6492 Comm: syz-executor.3 Not tainted 6.3.0-rc7-syzkaller-g14f8db1c0f9a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 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:319 [inline] print_report+0x174/0x514 mm/kasan/report.c:430 kasan_report+0xd4/0x130 mm/kasan/report.c:536 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:4901 [inline] __udp_gso_segment+0xaf4/0x1bcc net/ipv4/udp_offload.c:332 udp4_ufo_fragment+0x3f8/0x6d4 net/ipv4/udp_offload.c:392 inet_gso_segment+0x4e4/0x1114 net/ipv4/af_inet.c:1396 skb_mac_gso_segment+0x2b4/0x5b0 net/core/gro.c:141 __skb_gso_segment+0x254/0x3d8 net/core/dev.c:3404 skb_gso_segment include/linux/netdevice.h:4828 [inline] validate_xmit_skb+0x364/0xd38 net/core/dev.c:3662 __dev_queue_xmit+0x12c4/0x37dc net/core/dev.c:4239 dev_queue_xmit+0x24/0x34 include/linux/netdevice.h:3054 packet_snd net/packet/af_packet.c:3073 [inline] packet_sendmsg+0x3694/0x4cc4 net/packet/af_packet.c:3104 sock_sendmsg_nosec net/socket.c:724 [inline] sock_sendmsg net/socket.c:747 [inline] __sys_sendto+0x3b4/0x538 net/socket.c:2142 __do_sys_sendto net/socket.c:2154 [inline] __se_sys_sendto net/socket.c:2150 [inline] __arm64_sys_sendto+0xd8/0xf8 net/socket.c:2150 __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 6492: 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:967 [inline] __kmalloc_node_track_caller+0xd0/0x1c0 mm/slab_common.c:987 kmalloc_reserve+0x120/0x240 net/core/skbuff.c:537 __alloc_skb+0x1c8/0x3d8 net/core/skbuff.c:606 skb_segment+0xa80/0x32fc net/core/skbuff.c:4455 __udp_gso_segment+0x5d0/0x1bcc net/ipv4/udp_offload.c:290 udp4_ufo_fragment+0x3f8/0x6d4 net/ipv4/udp_offload.c:392 inet_gso_segment+0x4e4/0x1114 net/ipv4/af_inet.c:1396 skb_mac_gso_segment+0x2b4/0x5b0 net/core/gro.c:141 __skb_gso_segment+0x254/0x3d8 net/core/dev.c:3404 skb_gso_segment include/linux/netdevice.h:4828 [inline] validate_xmit_skb+0x364/0xd38 net/core/dev.c:3662 __dev_queue_xmit+0x12c4/0x37dc net/core/dev.c:4239 dev_queue_xmit+0x24/0x34 include/linux/netdevice.h:3054 packet_snd net/packet/af_packet.c:3073 [inline] packet_sendmsg+0x3694/0x4cc4 net/packet/af_packet.c:3104 sock_sendmsg_nosec net/socket.c:724 [inline] sock_sendmsg net/socket.c:747 [inline] __sys_sendto+0x3b4/0x538 net/socket.c:2142 __do_sys_sendto net/socket.c:2154 [inline] __se_sys_sendto net/socket.c:2150 [inline] __arm64_sys_sendto+0xd8/0xf8 net/socket.c:2150 __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 ffff00012a85b000 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 60 bytes inside of allocated 1024-byte region [ffff00012a85b000, ffff00012a85b400) The buggy address belongs to the physical page: page:000000006b458814 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x16a858 head:000000006b458814 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 anon flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000010200 ffff0000c0002780 0000000000000000 0000000000000001 raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff00012a85b300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff00012a85b380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff00012a85b400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff00012a85b480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff00012a85b500: 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: 1 PID: 6492 Comm: syz-executor.3 Tainted: G B 6.3.0-rc7-syzkaller-g14f8db1c0f9a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 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:4901 [inline] __udp_gso_segment+0xaf4/0x1bcc net/ipv4/udp_offload.c:332 udp4_ufo_fragment+0x3f8/0x6d4 net/ipv4/udp_offload.c:392 inet_gso_segment+0x4e4/0x1114 net/ipv4/af_inet.c:1396 skb_mac_gso_segment+0x2b4/0x5b0 net/core/gro.c:141 __skb_gso_segment+0x254/0x3d8 net/core/dev.c:3404 skb_gso_segment include/linux/netdevice.h:4828 [inline] validate_xmit_skb+0x364/0xd38 net/core/dev.c:3662 __dev_queue_xmit+0x12c4/0x37dc net/core/dev.c:4239 dev_queue_xmit+0x24/0x34 include/linux/netdevice.h:3054 packet_snd net/packet/af_packet.c:3073 [inline] packet_sendmsg+0x3694/0x4cc4 net/packet/af_packet.c:3104 sock_sendmsg_nosec net/socket.c:724 [inline] sock_sendmsg net/socket.c:747 [inline] __sys_sendto+0x3b4/0x538 net/socket.c:2142 __do_sys_sendto net/socket.c:2154 [inline] __se_sys_sendto net/socket.c:2150 [inline] __arm64_sys_sendto+0xd8/0xf8 net/socket.c:2150 __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: 1 PID: 6492 Comm: syz-executor.3 Tainted: G B 6.3.0-rc7-syzkaller-g14f8db1c0f9a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 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:4901 [inline] __udp_gso_segment+0xaf4/0x1bcc net/ipv4/udp_offload.c:332 udp4_ufo_fragment+0x3f8/0x6d4 net/ipv4/udp_offload.c:392 inet_gso_segment+0x4e4/0x1114 net/ipv4/af_inet.c:1396 skb_mac_gso_segment+0x2b4/0x5b0 net/core/gro.c:141 __skb_gso_segment+0x254/0x3d8 net/core/dev.c:3404 skb_gso_segment include/linux/netdevice.h:4828 [inline] validate_xmit_skb+0x364/0xd38 net/core/dev.c:3662 __dev_queue_xmit+0x12c4/0x37dc net/core/dev.c:4239 dev_queue_xmit+0x24/0x34 include/linux/netdevice.h:3054 packet_snd net/packet/af_packet.c:3073 [inline] packet_sendmsg+0x3694/0x4cc4 net/packet/af_packet.c:3104 sock_sendmsg_nosec net/socket.c:724 [inline] sock_sendmsg net/socket.c:747 [inline] __sys_sendto+0x3b4/0x538 net/socket.c:2142 __do_sys_sendto net/socket.c:2154 [inline] __se_sys_sendto net/socket.c:2150 [inline] __arm64_sys_sendto+0xd8/0xf8 net/socket.c:2150 __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 ================================================================================ skb len=64521 headroom=2 headlen=848 tailroom=0 mac=(2,14) net=(16,44) trans=60 shinfo(txflags=0 nr_frags=16 gso(size=344 type=131074 segs=0)) csum(0x0 ip_summed=0 complete_sw=0 valid=0 level=0) hash(0x0 sw=0 l4=0) proto=0x0800 pkttype=0 iif=0 dev name=netdevsim0 feat=0x001c000080014869 sk family=17 type=3 proto=0 skb linear: 00000000: 02 00 c5 2c f7 c2 59 75 e0 0d b0 2f 08 00 eb 2b skb linear: 00000010: 2f f0 da c8 89 7c 6b 11 87 77 fa ff ff ff 30 66 skb linear: 00000020: 10 0c b6 10 c5 47 1d 13 14 66 32 1a 54 e7 df 30 skb linear: 00000030: 5f 80 a8 81 61 b6 fd 8f 24 28 6a 57 c3 fe ff ff skb linear: 00000040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 skb linear: 00000050: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 skb linear: 00000060: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 skb linear: 00000070: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 skb linear: 00000080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 skb linear: 00000090: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 skb linear: 000000a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 skb linear: 000000b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 skb linear: 000000c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 skb linear: 000000d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 skb linear: 000000e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 skb linear: 000000f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 skb linear: 00000100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 skb linear: 00000110: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 skb linear: 00000120: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ------------[ cut here ]------------ netdevsim: caps=(0x001c000080014869, 0x0000000000000000) WARNING: CPU: 1 PID: 6492 at net/core/dev.c:3232 skb_warn_bad_offload+0x160/0x194 net/core/dev.c:3230 Modules linked in: CPU: 1 PID: 6492 Comm: syz-executor.3 Tainted: G B 6.3.0-rc7-syzkaller-g14f8db1c0f9a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : skb_warn_bad_offload+0x160/0x194 net/core/dev.c:3230 lr : skb_warn_bad_offload+0x160/0x194 net/core/dev.c:3230 sp : ffff80001af373e0 x29: ffff80001af373e0 x28: 1fffe0001a76081a x27: dfff800000000000 x26: 0000000000000020 x25: 1fffe0001a760810 x24: ffff8000145da600 x23: dfff800000000000 x22: ffff0000d3b04018 x21: ffff8000138bca00 x20: ffff0000ce6e8000 x19: ffff0000ce6e80f0 x18: 0000000000000000 x17: 0000000000000000 x16: ffff80001236e294 x15: 0000000000000202 x14: 0000000000000000 x13: 0000000000000001 x12: 0000000000000001 x11: 0000000000040000 x10: 000000000003ffff x9 : 3650a4c26e3d8400 x8 : 3650a4c26e3d8400 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001af36cd8 x4 : ffff800015e4ccc0 x3 : ffff800008584230 x2 : 0000000000000001 x1 : 0000000000000200 x0 : 0000000000000000 Call trace: skb_warn_bad_offload+0x160/0x194 net/core/dev.c:3230 __skb_gso_segment+0x2fc/0x3d8 net/core/dev.c:3407 skb_gso_segment include/linux/netdevice.h:4828 [inline] validate_xmit_skb+0x364/0xd38 net/core/dev.c:3662 __dev_queue_xmit+0x12c4/0x37dc net/core/dev.c:4239 dev_queue_xmit+0x24/0x34 include/linux/netdevice.h:3054 packet_snd net/packet/af_packet.c:3073 [inline] packet_sendmsg+0x3694/0x4cc4 net/packet/af_packet.c:3104 sock_sendmsg_nosec net/socket.c:724 [inline] sock_sendmsg net/socket.c:747 [inline] __sys_sendto+0x3b4/0x538 net/socket.c:2142 __do_sys_sendto net/socket.c:2154 [inline] __se_sys_sendto net/socket.c:2150 [inline] __arm64_sys_sendto+0xd8/0xf8 net/socket.c:2150 __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 irq event stamp: 724 hardirqs last enabled at (724): [] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:84 [inline] hardirqs last enabled at (724): [] exit_to_kernel_mode+0xdc/0x10c arch/arm64/kernel/entry-common.c:94 hardirqs last disabled at (723): [] __el1_irq arch/arm64/kernel/entry-common.c:468 [inline] hardirqs last disabled at (723): [] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:486 softirqs last enabled at (348): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (476): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]---