================================================================== BUG: KASAN: slab-out-of-bounds in do_csum+0x44/0x254 arch/arm64/lib/csum.c:39 Read of size 4294966032 at addr ffff000129e384f0 by task syz-executor.2/6743 CPU: 0 PID: 6743 Comm: syz-executor.2 Not tainted 6.3.0-rc3-syzkaller-ge8d018dd0257 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __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+0x2c/0x3c 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 udp6_ufo_fragment+0x514/0xc34 net/ipv6/udp_offload.c:47 ipv6_gso_segment+0x5a8/0x172c net/ipv6/ip6_offload.c:119 skb_mac_gso_segment+0x2b4/0x5b0 net/core/gro.c:141 __skb_gso_segment+0x254/0x3d8 net/core/dev.c:3403 skb_gso_segment include/linux/netdevice.h:4827 [inline] validate_xmit_skb+0x364/0xd38 net/core/dev.c:3661 validate_xmit_skb_list net/core/dev.c:3711 [inline] __dev_direct_xmit+0x164/0x830 net/core/dev.c:4290 dev_direct_xmit include/linux/netdevice.h:3066 [inline] packet_direct_xmit+0x15c/0x2d0 net/packet/af_packet.c:282 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+0x58/0x168 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 6743: 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+0x138/0x258 net/core/skbuff.c:537 __alloc_skb+0x1c8/0x3d8 net/core/skbuff.c:606 skb_segment+0xa80/0x3324 net/core/skbuff.c:4455 __udp_gso_segment+0x5d0/0x1bcc net/ipv4/udp_offload.c:290 udp6_ufo_fragment+0x514/0xc34 net/ipv6/udp_offload.c:47 ipv6_gso_segment+0x5a8/0x172c net/ipv6/ip6_offload.c:119 skb_mac_gso_segment+0x2b4/0x5b0 net/core/gro.c:141 __skb_gso_segment+0x254/0x3d8 net/core/dev.c:3403 skb_gso_segment include/linux/netdevice.h:4827 [inline] validate_xmit_skb+0x364/0xd38 net/core/dev.c:3661 validate_xmit_skb_list net/core/dev.c:3711 [inline] __dev_direct_xmit+0x164/0x830 net/core/dev.c:4290 dev_direct_xmit include/linux/netdevice.h:3066 [inline] packet_direct_xmit+0x15c/0x2d0 net/packet/af_packet.c:282 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+0x58/0x168 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 ffff000129e38000 which belongs to the cache kmalloc-2k of size 2048 The buggy address is located 1264 bytes inside of allocated 2048-byte region [ffff000129e38000, ffff000129e38800) The buggy address belongs to the physical page: page:00000000ceb6a883 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x169e38 head:00000000ceb6a883 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 anon flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000010200 ffff0000c0002900 0000000000000000 dead000000000001 raw: 0000000000000000 0000000000080008 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff000129e38700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff000129e38780: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff000129e38800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff000129e38880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff000129e38900: 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 10176 is too large for 64-bit type 'u64' (aka 'unsigned long long') CPU: 0 PID: 6743 Comm: syz-executor.2 Tainted: G B 6.3.0-rc3-syzkaller-ge8d018dd0257 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __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 udp6_ufo_fragment+0x514/0xc34 net/ipv6/udp_offload.c:47 ipv6_gso_segment+0x5a8/0x172c net/ipv6/ip6_offload.c:119 skb_mac_gso_segment+0x2b4/0x5b0 net/core/gro.c:141 __skb_gso_segment+0x254/0x3d8 net/core/dev.c:3403 skb_gso_segment include/linux/netdevice.h:4827 [inline] validate_xmit_skb+0x364/0xd38 net/core/dev.c:3661 validate_xmit_skb_list net/core/dev.c:3711 [inline] __dev_direct_xmit+0x164/0x830 net/core/dev.c:4290 dev_direct_xmit include/linux/netdevice.h:3066 [inline] packet_direct_xmit+0x15c/0x2d0 net/packet/af_packet.c:282 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+0x58/0x168 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 10176 is too large for 64-bit type 'u64' (aka 'unsigned long long') CPU: 0 PID: 6743 Comm: syz-executor.2 Tainted: G B 6.3.0-rc3-syzkaller-ge8d018dd0257 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __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 udp6_ufo_fragment+0x514/0xc34 net/ipv6/udp_offload.c:47 ipv6_gso_segment+0x5a8/0x172c net/ipv6/ip6_offload.c:119 skb_mac_gso_segment+0x2b4/0x5b0 net/core/gro.c:141 __skb_gso_segment+0x254/0x3d8 net/core/dev.c:3403 skb_gso_segment include/linux/netdevice.h:4827 [inline] validate_xmit_skb+0x364/0xd38 net/core/dev.c:3661 validate_xmit_skb_list net/core/dev.c:3711 [inline] __dev_direct_xmit+0x164/0x830 net/core/dev.c:4290 dev_direct_xmit include/linux/netdevice.h:3066 [inline] packet_direct_xmit+0x15c/0x2d0 net/packet/af_packet.c:282 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+0x58/0x168 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=9070 headroom=178 headlen=1094 tailroom=0 mac=(178,14) net=(192,1072) trans=1264 shinfo(txflags=0 nr_frags=3 gso(size=5 type=131074 segs=0)) csum(0x0 ip_summed=0 complete_sw=0 valid=0 level=0) hash(0x0 sw=0 l4=0) proto=0x86dd pkttype=0 iif=0 dev name=erspan0 feat=0x0000000000006869 sk family=17 type=3 proto=0 skb linear: 00000000: 0c 2c ff f5 7b 01 6d 27 63 bd 56 37 86 dd 39 8d skb linear: 00000010: 53 75 03 e5 2b 02 59 1f 11 1e e6 16 d5 c0 18 43 skb linear: 00000020: 74 a7 ff e4 ec 55 e0 65 47 86 a7 01 00 93 5b a5 skb linear: 00000030: 14 d4 08 08 ef a0 11 80 16 01 84 2f d0 8d 49 a4 skb linear: 00000040: 7e ff 71 bc 41 31 fe 4c 1f 99 bf 00 a9 00 00 00 skb linear: 00000050: 08 d1 84 3e 77 0a fd 6e 9e f5 83 7d bd 00 00 00 skb linear: 00000060: 00 53 00 00 00 00 00 00 00 00 00 00 00 00 00 00 skb linear: 00000070: 00 00 00 00 00 00 11 00 00 00 05 00 00 00 01 00 skb linear: 00000080: 00 06 89 7b 42 8e 75 eb 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 ]------------ erspan0: caps=(0x0000000000006869, 0x0000000000000000) WARNING: CPU: 0 PID: 6743 at net/core/dev.c:3231 skb_warn_bad_offload+0x160/0x194 net/core/dev.c:3229 Modules linked in: CPU: 0 PID: 6743 Comm: syz-executor.2 Tainted: G B 6.3.0-rc3-syzkaller-ge8d018dd0257 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : skb_warn_bad_offload+0x160/0x194 net/core/dev.c:3229 lr : skb_warn_bad_offload+0x160/0x194 net/core/dev.c:3229 sp : ffff800024587560 x29: ffff800024587560 x28: 1fffe00019ebc492 x27: dfff800000000000 x26: 0000000000000020 x25: 1fffe00019ebc488 x24: ffff80001440a4c0 x23: dfff800000000000 x22: ffff0000cf5e23d8 x21: ffff0001272d8000 x20: ffff0001272d8000 x19: ffff0001272d80f0 x18: 1fffe0003689b7b6 x17: 0000000000000000 x16: ffff8000122e1788 x15: 0000000000000000 x14: 0000000000000002 x13: 0000000000000001 x12: 0000000000040000 x11: 000000000003ffff x10: ffff800023a3f000 x9 : 28dc5efdce19fe00 x8 : 28dc5efdce19fe00 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff800024586e58 x4 : ffff800015c23fc0 x3 : ffff80000858891c x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000 Call trace: skb_warn_bad_offload+0x160/0x194 net/core/dev.c:3229 __skb_gso_segment+0x2fc/0x3d8 net/core/dev.c:3406 skb_gso_segment include/linux/netdevice.h:4827 [inline] validate_xmit_skb+0x364/0xd38 net/core/dev.c:3661 validate_xmit_skb_list net/core/dev.c:3711 [inline] __dev_direct_xmit+0x164/0x830 net/core/dev.c:4290 dev_direct_xmit include/linux/netdevice.h:3066 [inline] packet_direct_xmit+0x15c/0x2d0 net/packet/af_packet.c:282 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+0x58/0x168 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: 4477 hardirqs last enabled at (4477): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1378 [inline] hardirqs last enabled at (4477): [] finish_lock_switch+0xbc/0x1e4 kernel/sched/core.c:5062 hardirqs last disabled at (4476): [] __schedule+0x2a4/0x1e38 kernel/sched/core.c:6521 softirqs last enabled at (3554): [] softirq_handle_end kernel/softirq.c:414 [inline] softirqs last enabled at (3554): [] __do_softirq+0xacc/0xd60 kernel/softirq.c:600 softirqs last disabled at (3411): [] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80 ---[ end trace 0000000000000000 ]---