------------[ cut here ]------------
WARNING: CPU: 1 PID: 14289 at net/mptcp/protocol.c:1001 __mptcp_clean_una+0xbc/0x360 net/mptcp/protocol.c:1001
Modules linked in:
Kernel panic - not syncing: kernel: panic_on_warn set ...
CPU: 1 PID: 14289 Comm: kworker/1:2 Not tainted 6.8.0-rc6-syzkaller #0
Hardware name: ARM-Versatile Express
Workqueue: events mptcp_worker
Backtrace: 
[<818380cc>] (dump_backtrace) from [<818381c8>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256)
 r7:00000000 r6:82622dc4 r5:60000193 r4:81fbd5bc
[<818381b0>] (show_stack) from [<818556e4>] (__dump_stack lib/dump_stack.c:88 [inline])
[<818381b0>] (show_stack) from [<818556e4>] (dump_stack_lvl+0x48/0x54 lib/dump_stack.c:106)
[<8185569c>] (dump_stack_lvl) from [<81855708>] (dump_stack+0x18/0x1c lib/dump_stack.c:113)
 r5:00000000 r4:82850d18
[<818556f0>] (dump_stack) from [<81838c70>] (panic+0x120/0x378 kernel/panic.c:344)
[<81838b50>] (panic) from [<802439cc>] (check_panic_on_warn kernel/panic.c:237 [inline])
[<81838b50>] (panic) from [<802439cc>] (print_tainted+0x0/0xa0 kernel/panic.c:232)
 r3:8260c484 r2:00000001 r1:81fa5f94 r0:81fadc60
 r7:817e8518
[<80243958>] (check_panic_on_warn) from [<80243bc0>] (__warn+0x7c/0x180 kernel/panic.c:677)
[<80243b44>] (__warn) from [<80243e3c>] (warn_slowpath_fmt+0x178/0x1f4 kernel/panic.c:702)
 r8:00000009 r7:82188d30 r6:dfad1e14 r5:837c0000 r4:00000000
[<80243cc8>] (warn_slowpath_fmt) from [<817e8518>] (__mptcp_clean_una+0xbc/0x360 net/mptcp/protocol.c:1001)
 r10:841e0000 r9:841e04ac r8:980e0000 r7:00000000 r6:841e04f0 r5:00000000
 r4:841e0000
[<817e845c>] (__mptcp_clean_una) from [<817e9ccc>] (__mptcp_clean_una_wakeup net/mptcp/protocol.c:1049 [inline])
[<817e845c>] (__mptcp_clean_una) from [<817e9ccc>] (mptcp_clean_una_wakeup net/mptcp/protocol.c:1056 [inline])
[<817e845c>] (__mptcp_clean_una) from [<817e9ccc>] (__mptcp_retrans+0x50/0x394 net/mptcp/protocol.c:2588)
 r9:841e04ac r8:00000080 r7:ddde4280 r6:841e007c r5:841e0000 r4:00000000
[<817e9c7c>] (__mptcp_retrans) from [<817edf6c>] (mptcp_worker+0x2d8/0x450 net/mptcp/protocol.c:2740)
 r10:82c16205 r9:841e04ac r8:00000080 r7:ddde4280 r6:00000000 r5:841e0000
 r4:841e04c0
[<817edc94>] (mptcp_worker) from [<80267028>] (process_one_work+0x19c/0x4a4 kernel/workqueue.c:2633)
 r10:82c16205 r9:837c0000 r8:00000080 r7:ddde4280 r6:82c16200 r5:841e04c0
 r4:84d10480
[<80266e8c>] (process_one_work) from [<80267570>] (process_scheduled_works kernel/workqueue.c:2706 [inline])
[<80266e8c>] (process_one_work) from [<80267570>] (worker_thread+0x240/0x48c kernel/workqueue.c:2787)
 r10:61c88647 r9:837c0000 r8:ddde42a0 r7:82604d40 r6:ddde4280 r5:84d104ac
 r4:84d10480
[<80267330>] (worker_thread) from [<8026e84c>] (kthread+0x104/0x134 kernel/kthread.c:388)
 r10:00000000 r9:dfd49e90 r8:84ff4380 r7:84d10480 r6:80267330 r5:837c0000
 r4:84ec4100
[<8026e748>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134)
Exception stack(0xdfad1fb0 to 0xdfad1ff8)
1fa0:                                     00000000 00000000 00000000 00000000
1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
1fe0: 00000000 00000000 00000000 00000000 00000013 00000000
 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026e748 r4:84ec4100
Rebooting in 86400 seconds..