------------[ cut here ]------------
WARNING: CPU: 1 PID: 19 at net/core/skbuff.c:5429 skb_try_coalesce+0x1141/0x1460 net/core/skbuff.c:5429
Modules linked in:
CPU: 1 PID: 19 Comm: ksoftirqd/1 Not tainted 5.15.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:skb_try_coalesce+0x1141/0x1460 net/core/skbuff.c:5429
Code: 24 18 bf 01 00 00 00 8b 40 20 44 0f b7 f8 44 89 fe e8 a3 83 5b fa 41 83 ef 01 0f 85 da f1 ff ff e9 82 f5 ff ff e8 4f 7c 5b fa <0f> 0b e9 b0 f9 ff ff e8 63 15 a3 fa e9 5e f1 ff ff e8 49 15 a3 fa
RSP: 0018:ffffc90000d97568 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000003d80 RCX: 0000000000000100
RDX: ffff888011f45580 RSI: ffffffff871b6c71 RDI: 0000000000000003
RBP: ffff88802fc07268 R08: 0000000000003d80 R09: 0000000000000000
R10: ffffffff871b661f R11: 0000000000000000 R12: ffff88802fc074e8
R13: ffff88807ebbbac0 R14: 0000000000003f00 R15: 0000000000000009
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8586cfd3a4 CR3: 000000004ff70000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 tcp_try_coalesce net/ipv4/tcp_input.c:4649 [inline]
 tcp_try_coalesce+0x393/0x920 net/ipv4/tcp_input.c:4628
 tcp_queue_rcv+0x8a/0x6e0 net/ipv4/tcp_input.c:4912
 tcp_data_queue+0x11ee/0x4b90 net/ipv4/tcp_input.c:5023
 tcp_rcv_established+0x8ad/0x2130 net/ipv4/tcp_input.c:5945
 tcp_v4_do_rcv+0x600/0x8d0 net/ipv4/tcp_ipv4.c:1716
 tcp_v4_rcv+0x2768/0x3080 net/ipv4/tcp_ipv4.c:2110
 ip_protocol_deliver_rcu+0xa7/0xee0 net/ipv4/ip_input.c:204
 ip_local_deliver_finish+0x20a/0x370 net/ipv4/ip_input.c:231
 NF_HOOK include/linux/netfilter.h:307 [inline]
 NF_HOOK include/linux/netfilter.h:301 [inline]
 ip_local_deliver+0x1b3/0x200 net/ipv4/ip_input.c:252
 dst_input include/net/dst.h:460 [inline]
 ip_rcv_finish+0x1da/0x2f0 net/ipv4/ip_input.c:429
 NF_HOOK include/linux/netfilter.h:307 [inline]
 NF_HOOK include/linux/netfilter.h:301 [inline]
 ip_rcv+0xaa/0xd0 net/ipv4/ip_input.c:540
 __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5462
 __netif_receive_skb+0x24/0x1b0 net/core/dev.c:5576
 process_backlog+0x2a5/0x6c0 net/core/dev.c:6452
 __napi_poll+0xaf/0x440 net/core/dev.c:7017
 napi_poll net/core/dev.c:7084 [inline]
 net_rx_action+0x801/0xb40 net/core/dev.c:7171
 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558
 run_ksoftirqd kernel/softirq.c:920 [inline]
 run_ksoftirqd+0x2d/0x60 kernel/softirq.c:912
 smpboot_thread_fn+0x645/0x9c0 kernel/smpboot.c:164
 kthread+0x3e5/0x4d0 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295