==================================================================
BUG: KASAN: use-after-free in do_csum+0x2c1/0x2e0 lib/checksum.c:56
Read of size 1 at addr ffff888079ee7f35 by task syz-executor.5/8860
CPU: 1 PID: 8860 Comm: syz-executor.5 Not tainted 6.1.0-syzkaller-11778-gc183e6c3ec34 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd1/0x138 lib/dump_stack.c:106
print_address_description mm/kasan/report.c:306 [inline]
print_report+0x15e/0x45d mm/kasan/report.c:417
kasan_report+0xbf/0x1f0 mm/kasan/report.c:517
do_csum+0x2c1/0x2e0 lib/checksum.c:56
csum_partial+0x24/0x60 lib/checksum.c:128
__skb_checksum+0x4b6/0x890 net/core/skbuff.c:3094
skb_checksum net/core/skbuff.c:3146 [inline]
__skb_checksum_complete+0xaf/0x3e0 net/core/skbuff.c:3268
__skb_checksum_validate_complete include/linux/skbuff.h:4436 [inline]
icmp_rcv+0x55f/0x1030 net/ipv4/icmp.c:1205
ip_protocol_deliver_rcu+0x9f/0x460 net/ipv4/ip_input.c:205
ip_local_deliver_finish+0x2ec/0x4c0 net/ipv4/ip_input.c:233
NF_HOOK include/linux/netfilter.h:302 [inline]
NF_HOOK include/linux/netfilter.h:296 [inline]
ip_local_deliver+0x1ae/0x200 net/ipv4/ip_input.c:254
dst_input include/net/dst.h:454 [inline]
ip_rcv_finish+0x1cf/0x2f0 net/ipv4/ip_input.c:449
NF_HOOK include/linux/netfilter.h:302 [inline]
NF_HOOK include/linux/netfilter.h:296 [inline]
ip_rcv+0xae/0xd0 net/ipv4/ip_input.c:569
__netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5482
__netif_receive_skb+0x1f/0x1c0 net/core/dev.c:5596
process_backlog+0x3e4/0x810 net/core/dev.c:5924
__napi_poll+0xb8/0x770 net/core/dev.c:6485
napi_poll net/core/dev.c:6552 [inline]
net_rx_action+0xa00/0xde0 net/core/dev.c:6663
__do_softirq+0x1fb/0xadc kernel/softirq.c:571
invoke_softirq kernel/softirq.c:445 [inline]
__irq_exit_rcu+0x123/0x180 kernel/softirq.c:650
irq_exit_rcu+0x9/0x20 kernel/softirq.c:662
sysvec_apic_timer_interrupt+0x97/0xc0 arch/x86/kernel/apic/apic.c:1107
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x3c/0x70 kernel/locking/spinlock.c:194
Code: 74 24 10 e8 56 f6 5a f7 48 89 ef e8 fe 62 5b f7 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 3f c6 4d f7 65 8b 05 f0 b2 fa 75 85 c0 74 0a 5b 5d c3 e8 fc da
RSP: 0018:ffffc9000420f1f0 EFLAGS: 00000206
RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff226f946
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000001
RBP: ffff888012440780 R08: 0000000000000001 R09: ffffffff91335b7f
R10: 0000000000000001 R11: 0000000000000000 R12: ffff888012440780
R13: ffff888028d4f800 R14: ffff88804612e000 R15: ffff888012441c80
spin_unlock_irqrestore include/linux/spinlock.h:405 [inline]
get_partial_node.part.0+0x209/0x3d0 mm/slub.c:2308
get_partial_node mm/slub.c:2268 [inline]
get_partial mm/slub.c:2386 [inline]
___slab_alloc+0xcd7/0x1400 mm/slub.c:3188
__slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3292
__slab_alloc_node mm/slub.c:3345 [inline]
slab_alloc_node mm/slub.c:3442 [inline]
__kmem_cache_alloc_node+0x1a4/0x430 mm/slub.c:3491
__do_kmalloc_node mm/slab_common.c:967 [inline]
__kmalloc_node_track_caller+0x4b/0xc0 mm/slab_common.c:988
kmalloc_reserve net/core/skbuff.c:492 [inline]
__alloc_skb+0xe9/0x310 net/core/skbuff.c:565
alloc_skb include/linux/skbuff.h:1270 [inline]
alloc_skb_with_frags+0x97/0x6c0 net/core/skbuff.c:6195
sock_alloc_send_pskb+0x7a7/0x930 net/core/sock.c:2741
sock_alloc_send_skb include/net/sock.h:1888 [inline]
__ip_append_data+0x1ac7/0x39f0 net/ipv4/ip_output.c:1120
ip_append_data net/ipv4/ip_output.c:1343 [inline]
ip_append_data+0x115/0x1a0 net/ipv4/ip_output.c:1322
ping_v4_sendmsg+0xaac/0x1790 net/ipv4/ping.c:837
inet_sendmsg+0x9d/0xe0 net/ipv4/af_inet.c:827
sock_sendmsg_nosec net/socket.c:714 [inline]
sock_sendmsg+0xd3/0x120 net/socket.c:734
____sys_sendmsg+0x712/0x8c0 net/socket.c:2476
___sys_sendmsg+0x110/0x1b0 net/socket.c:2530
__sys_sendmsg+0xf7/0x1c0 net/socket.c:2559
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f4b2028c0a9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4b1edfe168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f4b203abf80 RCX: 00007f4b2028c0a9
RDX: 0000000000000000 RSI: 0000000020001280 RDI: 0000000000000026
RBP: 00007f4b202e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcdda140af R14: 00007f4b1edfe300 R15: 0000000000022000
The buggy address belongs to the physical page:
page:ffffea0001e7b9c0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x79ee7
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 0000000000000000 dead000000000122 0000000000000000
raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as freed
page last allocated via order 3, migratetype Unmovable, gfp_mask 0x1528c0(GFP_NOWAIT|__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_HARDWALL), pid 8860, tgid 8859 (syz-executor.5), ts 322979465366, free_ts 322980486178
prep_new_page mm/page_alloc.c:2531 [inline]
get_page_from_freelist+0x119c/0x2ce0 mm/page_alloc.c:4283
__alloc_pages+0x1cb/0x5b0 mm/page_alloc.c:5549
alloc_pages+0x1aa/0x270 mm/mempolicy.c:2285
skb_page_frag_refill net/core/sock.c:2865 [inline]
skb_page_frag_refill+0x195/0x360 net/core/sock.c:2849
sk_page_frag_refill+0x58/0x300 net/core/sock.c:2885
__ip_append_data+0x9c1/0x39f0 net/ipv4/ip_output.c:1213
ip_append_data net/ipv4/ip_output.c:1343 [inline]
ip_append_data+0x115/0x1a0 net/ipv4/ip_output.c:1322
ping_v4_sendmsg+0xaac/0x1790 net/ipv4/ping.c:837
inet_sendmsg+0x9d/0xe0 net/ipv4/af_inet.c:827
sock_sendmsg_nosec net/socket.c:714 [inline]
sock_sendmsg+0xd3/0x120 net/socket.c:734
____sys_sendmsg+0x712/0x8c0 net/socket.c:2476
___sys_sendmsg+0x110/0x1b0 net/socket.c:2530
__sys_sendmsg+0xf7/0x1c0 net/socket.c:2559
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1446 [inline]
free_pcp_prepare+0x65c/0xc00 mm/page_alloc.c:1496
free_unref_page_prepare mm/page_alloc.c:3369 [inline]
free_unref_page+0x1d/0x490 mm/page_alloc.c:3464
__folio_put_large mm/swap.c:119 [inline]
__folio_put+0x109/0x140 mm/swap.c:127
folio_put include/linux/mm.h:1250 [inline]
put_page include/linux/mm.h:1319 [inline]
__skb_frag_unref include/linux/skbuff.h:3388 [inline]
skb_release_data+0x522/0x870 net/core/skbuff.c:845
skb_release_all net/core/skbuff.c:916 [inline]
__kfree_skb net/core/skbuff.c:930 [inline]
kfree_skb_reason+0x1ab/0x4f0 net/core/skbuff.c:956
icmp_rcv+0x8c7/0x1030 net/ipv4/icmp.c:1274
ip_protocol_deliver_rcu+0x9f/0x460 net/ipv4/ip_input.c:205
ip_local_deliver_finish+0x2ec/0x4c0 net/ipv4/ip_input.c:233
NF_HOOK include/linux/netfilter.h:302 [inline]
NF_HOOK include/linux/netfilter.h:296 [inline]
ip_local_deliver+0x1ae/0x200 net/ipv4/ip_input.c:254
dst_input include/net/dst.h:454 [inline]
ip_rcv_finish+0x1cf/0x2f0 net/ipv4/ip_input.c:449
NF_HOOK include/linux/netfilter.h:302 [inline]
NF_HOOK include/linux/netfilter.h:296 [inline]
ip_rcv+0xae/0xd0 net/ipv4/ip_input.c:569
__netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5482
__netif_receive_skb+0x1f/0x1c0 net/core/dev.c:5596
process_backlog+0x3e4/0x810 net/core/dev.c:5924
__napi_poll+0xb8/0x770 net/core/dev.c:6485
napi_poll net/core/dev.c:6552 [inline]
net_rx_action+0xa00/0xde0 net/core/dev.c:6663
Memory state around the buggy address:
ffff888079ee7e00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff888079ee7e80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff888079ee7f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
^
ffff888079ee7f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff888079ee8000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
----------------
Code disassembly (best guess):
0: 74 24 je 0x26
2: 10 e8 adc %ch,%al
4: 56 push %rsi
5: f6 5a f7 negb -0x9(%rdx)
8: 48 89 ef mov %rbp,%rdi
b: e8 fe 62 5b f7 callq 0xf75b630e
10: 81 e3 00 02 00 00 and $0x200,%ebx
16: 75 25 jne 0x3d
18: 9c pushfq
19: 58 pop %rax
1a: f6 c4 02 test $0x2,%ah
1d: 75 2d jne 0x4c
1f: 48 85 db test %rbx,%rbx
22: 74 01 je 0x25
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 3f c6 4d f7 callq 0xf74dc66e <-- trapping instruction
2f: 65 8b 05 f0 b2 fa 75 mov %gs:0x75fab2f0(%rip),%eax # 0x75fab326
36: 85 c0 test %eax,%eax
38: 74 0a je 0x44
3a: 5b pop %rbx
3b: 5d pop %rbp
3c: c3 retq
3d: e8 .byte 0xe8
3e: fc cld
3f: da .byte 0xda