======================================
| xx__-> [ 2076.939873][T18987] ==================================================================
| [2076.940264][T18987] BUG: KASAN: slab-use-after-free in tcp_prune_ofo_queue (net/ipv4/tcp_input.c:4896 net/ipv4/tcp_input.c:5520) 
| [ 2076.940556][T18987] Read of size 4 at addr ffff88801637d998 by task socat/18987
| [ 2076.940850][T18987]
[ 2076.940967][T18987] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2076.940969][T18987] Call Trace:
[ 2076.940971][T18987]  <TASK>
[2076.940972][T18987] dump_stack_lvl (lib/dump_stack.c:123) 
[2076.940979][T18987] print_address_description.constprop.0 (mm/kasan/report.c:409) 
[2076.940985][T18987] ? tcp_prune_ofo_queue (net/ipv4/tcp_input.c:4896 net/ipv4/tcp_input.c:5520) 
[2076.940988][T18987] print_report (mm/kasan/report.c:522) 
[2076.940991][T18987] ? tcp_prune_ofo_queue (net/ipv4/tcp_input.c:4896 net/ipv4/tcp_input.c:5520) 
[2076.940993][T18987] ? kasan_addr_to_slab (./include/linux/mm.h:1178 mm/kasan/../slab.h:211 mm/kasan/common.c:38) 
[2076.940998][T18987] ? tcp_prune_ofo_queue (net/ipv4/tcp_input.c:4896 net/ipv4/tcp_input.c:5520) 
[2076.941001][T18987] kasan_report (mm/kasan/report.c:636) 
[2076.941004][T18987] ? tcp_prune_ofo_queue (net/ipv4/tcp_input.c:4896 net/ipv4/tcp_input.c:5520) 
[2076.941009][T18987] tcp_prune_ofo_queue (net/ipv4/tcp_input.c:4896 net/ipv4/tcp_input.c:5520) 
[2076.941015][T18987] tcp_try_rmem_schedule (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 net/ipv4/tcp_input.c:4896 net/ipv4/tcp_input.c:5577 net/ipv4/tcp_input.c:4907) 
[2076.941022][T18987] tcp_data_queue (net/ipv4/tcp_input.c:5192) 
[2076.941029][T18987] ? __pfx_tcp_data_queue (net/ipv4/tcp_input.c:5145) 
[2076.941033][T18987] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:95 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[2076.941038][T18987] ? ktime_get (kernel/time/timekeeping.c:251 (discriminator 4) kernel/time/timekeeping.c:360 (discriminator 4) kernel/time/timekeeping.c:778 (discriminator 4)) 
[2076.941043][T18987] tcp_rcv_established (./include/linux/skbuff.h:2148 ./include/net/tcp.h:2089 ./include/net/tcp.h:2170 net/ipv4/tcp_input.c:5662 net/ipv4/tcp_input.c:6210) 
[2076.941048][T18987] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[2076.941053][T18987] ? __pfx_tcp_rcv_established (net/ipv4/tcp_input.c:6027) 
[2076.941057][T18987] ? ipv4_dst_check (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/ipv4/route.c:401 net/ipv4/route.c:1216) 
[2076.941063][T18987] tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1972) 
[2076.941067][T18987] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[2076.941072][T18987] __release_sock (./include/net/sock.h:1148 net/core/sock.c:3188) 
[2076.941080][T18987] release_sock (net/core/sock.c:3744) 
[2076.941083][T18987] tcp_recvmsg (net/ipv4/tcp.c:2908) 
[2076.941088][T18987] ? __unix_dgram_recvmsg (net/unix/af_unix.c:2583) 
[2076.941092][T18987] ? __pfx_tcp_recvmsg (net/ipv4/tcp.c:2892) 
[2076.941096][T18987] ? __unix_dgram_recvmsg (net/unix/af_unix.c:2583) 
[2076.941100][T18987] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[2076.941105][T18987] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:903) 
[2076.941110][T18987] inet_recvmsg (net/ipv4/af_inet.c:885 (discriminator 8)) 
[2076.941114][T18987] ? __pfx_inet_recvmsg (net/ipv4/af_inet.c:875) 
[2076.941118][T18987] ? __unix_dgram_recvmsg (net/unix/af_unix.c:2583) 
[2076.941122][T18987] sock_read_iter (net/socket.c:1065 net/socket.c:1087 net/socket.c:1157) 
[2076.941128][T18987] ? __pfx___unix_dgram_recvmsg (net/unix/af_unix.c:2554) 
[2076.941131][T18987] ? __pfx_sock_read_iter (net/socket.c:1141) 
[2076.941141][T18987] vfs_read (fs/read_write.c:491 fs/read_write.c:572) 
[2076.941145][T18987] ? __pfx___sys_recvfrom (net/socket.c:2255) 
[2076.941149][T18987] ? __pfx_vfs_read (fs/read_write.c:553) 
[2076.941155][T18987] ? __rseq_handle_notify_resume (kernel/rseq.c:442) 
[2076.941163][T18987] ksys_read (fs/read_write.c:715) 
[2076.941166][T18987] ? __pfx_ksys_read (fs/read_write.c:705) 
[2076.941172][T18987] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[2076.941178][T18987] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2076.941181][T18987] RIP: 0033:0x7fc562e02292
[ 2076.941185][T18987] Code: c0 e9 b2 fe ff ff 50 48 8d 3d 6a 15 0c 00 e8 65 e1 01 00 0f 1f 44 00 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 0f 05 <48> 3d 00 f0 ff ff 77 56 c3 0f 1f 44 00 00 48 83 ec 28 48 89 54 24
All code
========
   0:	c0 e9 b2             	shr    $0xb2,%cl
   3:	fe                   	(bad)
   4:	ff                   	(bad)
   5:	ff 50 48             	call   *0x48(%rax)
   8:	8d 3d 6a 15 0c 00    	lea    0xc156a(%rip),%edi        # 0xc1578
   e:	e8 65 e1 01 00       	call   0x1e178
  13:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  18:	f3 0f 1e fa          	endbr64
  1c:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  23:	00 
  24:	85 c0                	test   %eax,%eax
  26:	75 10                	jne    0x38
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 56                	ja     0x88
  32:	c3                   	ret
  33:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  38:	48 83 ec 28          	sub    $0x28,%rsp
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	54                   	push   %rsp
  3f:	24                   	.byte 0x24

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 56                	ja     0x5e
   8:	c3                   	ret
   9:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   e:	48 83 ec 28          	sub    $0x28,%rsp
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	54                   	push   %rsp
  15:	24                   	.byte 0x24
[ 2076.941188][T18987] RSP: 002b:00007fffc8fe63c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
[ 2076.941192][T18987] RAX: ffffffffffffffda RBX: 000056451c947560 RCX: 00007fc562e02292
[ 2076.941194][T18987] RDX: 0000000000002000 RSI: 000056451c949000 RDI: 0000000000000008
[ 2076.941196][T18987] RBP: 000056451c949000 R08: 0000000000002000 R09: 0000000000000000
[ 2076.941198][T18987] R10: 0000000000000040 R11: 0000000000000246 R12: 0000000000000008


Finger prints:
print_report:kasan_report:tcp_prune_ofo_queue:tcp_try_rmem_schedule:tcp_data_queue