------------[ cut here ]------------ WARNING: CPU: 1 PID: 31151 at net/can/isotp.c:920 isotp_tx_timer_handler+0xe0/0x148 net/can/isotp.c:920 can-isotp: tx timer state 00000000 cfecho 00000000 Modules linked in: Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 31151 Comm: syz-executor.0 Not tainted 6.1.0-rc8-syzkaller #0 Hardware name: ARM-Versatile Express Backtrace: frame pointer underflow [<81751d04>] (dump_backtrace) from [<81751df8>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:253) r7:81cf8af0 r6:822228ec r5:60000193 r4:81d06ed8 [<81751de0>] (show_stack) from [<8176dac0>] (__dump_stack lib/dump_stack.c:88 [inline]) [<81751de0>] (show_stack) from [<8176dac0>] (dump_stack_lvl+0x48/0x54 lib/dump_stack.c:106) [<8176da78>] (dump_stack_lvl) from [<8176dae4>] (dump_stack+0x18/0x1c lib/dump_stack.c:113) r5:00000000 r4:82445d14 [<8176dacc>] (dump_stack) from [<817529a0>] (panic+0x11c/0x360 kernel/panic.c:274) [<81752884>] (panic) from [<80241604>] (__warn+0x98/0x1a4 kernel/panic.c:621) r3:00000001 r2:00000000 r1:00000000 r0:81cf8af0 r7:815ff6d0 [<8024156c>] (__warn) from [<81752c80>] (warn_slowpath_fmt+0x9c/0xd4 kernel/panic.c:651) r8:00000009 r7:815ff6d0 r6:00000398 r5:81eb06d8 r4:81eb06ac [<81752be8>] (warn_slowpath_fmt) from [<815ff6d0>] (isotp_tx_timer_handler+0xe0/0x148 net/can/isotp.c:920) r8:000000a0 r7:dddde220 r6:dddde180 r5:00000000 r4:8fe40278 [<815ff5f0>] (isotp_tx_timer_handler) from [<802e7148>] (__run_hrtimer kernel/time/hrtimer.c:1685 [inline]) [<815ff5f0>] (isotp_tx_timer_handler) from [<802e7148>] (__hrtimer_run_queues+0x1b0/0x46c kernel/time/hrtimer.c:1749) r5:dddde260 r4:8fe40278 [<802e6f98>] (__hrtimer_run_queues) from [<802e7490>] (hrtimer_run_softirq+0x8c/0xb8 kernel/time/hrtimer.c:1766) r10:82a7dc00 r9:00000100 r8:00000100 r7:00000000 r6:3b9aca00 r5:20000113 r4:dddde180 [<802e7404>] (hrtimer_run_softirq) from [<8020133c>] (__do_softirq+0x16c/0x498 kernel/softirq.c:571) r7:ec3fdfb0 r6:00000008 r5:00000009 r4:822040a0 [<802011d0>] (__do_softirq) from [<80249f48>] (invoke_softirq kernel/softirq.c:445 [inline]) [<802011d0>] (__do_softirq) from [<80249f48>] (__irq_exit_rcu kernel/softirq.c:650 [inline]) [<802011d0>] (__do_softirq) from [<80249f48>] (__irq_exit_rcu kernel/softirq.c:640 [inline]) [<802011d0>] (__do_softirq) from [<80249f48>] (irq_exit+0x9c/0xe8 kernel/softirq.c:674) r10:7ef6e544 r9:76bb26d0 r8:00000000 r7:ec3fdfb0 r6:81ebaa30 r5:81ebaa48 r4:820aaa00 [<80249eac>] (irq_exit) from [<8176e1b8>] (generic_handle_arch_irq+0x7c/0x80 kernel/irq/handle.c:240) r5:81ebaa48 r4:820aa9dc [<8176e13c>] (generic_handle_arch_irq) from [<81724198>] (call_with_stack+0x1c/0x20 arch/arm/lib/call_with_stack.S:40) r9:76bb26d0 r8:820a2044 r7:82a7dc00 r6:ffffffff r5:20000010 r4:000170cc [<8172417c>] (call_with_stack) from [<80200e74>] (__irq_usr+0x74/0x80 arch/arm/kernel/entry-armv.S:436) Exception stack(0xec3fdfb0 to 0xec3fdff8) dfa0: ffffffff 00000004 000001b8 00000000 dfc0: 00000000 0000cb0a 00000000 00000000 7ef6e3d2 76bb26d0 7ef6e544 76bb220c dfe0: 20004ca0 20004ca0 000170cc 000170cc 20000010 ffffffff Rebooting in 86400 seconds..