general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 PID: 18016 Comm: syz-executor.1 Not tainted 6.3.0-rc4-syzkaller-00039-gffe78bbd5121 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
RIP: 0010:list_replace_rcu include/linux/rculist.h:202 [inline]
RIP: 0010:fl_change+0x1e9d/0x4ac0 net/sched/cls_flower.c:2301
Code: 02 00 0f 85 8b 27 00 00 4d 89 a7 48 04 00 00 49 8b 87 48 04 00 00 48 89 c2 49 89 c4 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 da 27 00 00 49 89 1c 24 49 8b 87 40 04 00 00 48
RSP: 0018:ffffc900172d71e0 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff88802ef70440 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff89eeeaa2 RDI: ffff88802ef70448
RBP: ffffc900172d73e0 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: ffff888043437008 R14: 0000000000000000 R15: ffff88802ef70000
FS: 0000000000000000(0000) GS:ffff8880b9900000(0063) knlGS:00000000f7fc9b40
CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00007f3b82041300 CR3: 000000016fb91000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
tc_new_tfilter+0x97c/0x2290 net/sched/cls_api.c:2310
rtnetlink_rcv_msg+0x996/0xd50 net/core/rtnetlink.c:6165
netlink_rcv_skb+0x165/0x440 net/netlink/af_netlink.c:2574
netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline]
netlink_unicast+0x547/0x7f0 net/netlink/af_netlink.c:1365
netlink_sendmsg+0x925/0xe30 net/netlink/af_netlink.c:1942
sock_sendmsg_nosec net/socket.c:724 [inline]
sock_sendmsg+0xde/0x190 net/socket.c:747
____sys_sendmsg+0x71c/0x900 net/socket.c:2501
___sys_sendmsg+0x110/0x1b0 net/socket.c:2555
__sys_sendmsg+0xf7/0x1c0 net/socket.c:2584
do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
__do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203
entry_SYSENTER_compat_after_hwframe+0x70/0x82
RIP: 0023:0xf7fef579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f7fc95cc EFLAGS: 00000296 ORIG_RAX: 0000000000000172
RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000020000140
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:list_replace_rcu include/linux/rculist.h:202 [inline]
RIP: 0010:fl_change+0x1e9d/0x4ac0 net/sched/cls_flower.c:2301
Code: 02 00 0f 85 8b 27 00 00 4d 89 a7 48 04 00 00 49 8b 87 48 04 00 00 48 89 c2 49 89 c4 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 da 27 00 00 49 89 1c 24 49 8b 87 40 04 00 00 48
RSP: 0018:ffffc900172d71e0 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff88802ef70440 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff89eeeaa2 RDI: ffff88802ef70448
RBP: ffffc900172d73e0 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: ffff888043437008 R14: 0000000000000000 R15: ffff88802ef70000
FS: 0000000000000000(0000) GS:ffff8880b9900000(0063) knlGS:00000000f7fc9b40
CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00007f3b82041300 CR3: 000000016fb91000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 02 00 add (%rax),%al
2: 0f 85 8b 27 00 00 jne 0x2793
8: 4d 89 a7 48 04 00 00 mov %r12,0x448(%r15)
f: 49 8b 87 48 04 00 00 mov 0x448(%r15),%rax
16: 48 89 c2 mov %rax,%rdx
19: 49 89 c4 mov %rax,%r12
1c: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
23: fc ff df
26: 48 c1 ea 03 shr $0x3,%rdx
* 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction
2e: 0f 85 da 27 00 00 jne 0x280e
34: 49 89 1c 24 mov %rbx,(%r12)
38: 49 8b 87 40 04 00 00 mov 0x440(%r15),%rax
3f: 48 rex.W