------------[ cut here ]------------ WARNING: CPU: 0 PID: 2236 at net/can/isotp.c:910 isotp_tx_timer_handler+0x110/0x130 net/can/isotp.c:910 Modules linked in: Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 2236 Comm: syz-executor.1 Not tainted 6.1.0-rc4-syzkaller #0 Hardware name: ARM-Versatile Express Backtrace: frame pointer underflow [<8173ade8>] (dump_backtrace) from [<8173aedc>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:253) r7:81cfb7ac r6:822228ec r5:60000193 r4:81d09b94 [<8173aec4>] (show_stack) from [<81756fb8>] (__dump_stack lib/dump_stack.c:88 [inline]) [<8173aec4>] (show_stack) from [<81756fb8>] (dump_stack_lvl+0x48/0x54 lib/dump_stack.c:106) [<81756f70>] (dump_stack_lvl) from [<81756fdc>] (dump_stack+0x18/0x1c lib/dump_stack.c:113) r5:00000000 r4:82448d14 [<81756fc4>] (dump_stack) from [<8173ba84>] (panic+0x11c/0x360 kernel/panic.c:274) [<8173b968>] (panic) from [<80241604>] (__warn+0x98/0x1a4 kernel/panic.c:621) r3:00000001 r2:00000000 r1:00000000 r0:81cfb7ac r7:815eaa08 [<8024156c>] (__warn) from [<8173bd30>] (warn_slowpath_fmt+0x68/0xd4 kernel/panic.c:644) r8:00000009 r7:815eaa08 r6:0000038e r5:81eb3830 r4:00000000 [<8173bccc>] (warn_slowpath_fmt) from [<815eaa08>] (isotp_tx_timer_handler+0x110/0x130 net/can/isotp.c:910) r8:000000a0 r7:dddcd220 r6:dddcd180 r5:85610278 r4:00000000 [<815ea8f8>] (isotp_tx_timer_handler) from [<802e70c0>] (__run_hrtimer kernel/time/hrtimer.c:1685 [inline]) [<815ea8f8>] (isotp_tx_timer_handler) from [<802e70c0>] (__hrtimer_run_queues+0x1b0/0x46c kernel/time/hrtimer.c:1749) r5:dddcd260 r4:85600278 [<802e6f10>] (__hrtimer_run_queues) from [<802e7408>] (hrtimer_run_softirq+0x8c/0xb8 kernel/time/hrtimer.c:1766) r10:83fd8000 r9:00000101 r8:00000100 r7:00000000 r6:00000000 r5:20000113 r4:dddcd180 [<802e737c>] (hrtimer_run_softirq) from [<8020133c>] (__do_softirq+0x16c/0x498 kernel/softirq.c:571) r7:df9a5de0 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) r10:0000077a r9:83fd8000 r8:00000000 r7:df9a5de0 r6:81ebdb04 r5:81ebdb1c r4:820aaa00 [<80249eac>] (irq_exit) from [<81757178>] (generic_handle_arch_irq+0x7c/0x80 kernel/irq/handle.c:240) r5:81ebdb1c r4:820aa9dc [<817570fc>] (generic_handle_arch_irq) from [<8170e5fc>] (call_with_stack+0x1c/0x20 arch/arm/lib/call_with_stack.S:40) r9:83fd8000 r8:00000000 r7:df9a5e14 r6:ffffffff r5:60000013 r4:81761c14 [<8170e5e0>] (call_with_stack) from [<80200b44>] (__irq_svc+0x84/0xac arch/arm/kernel/entry-armv.S:221) Exception stack(0xdf9a5de0 to 0xdf9a5e28) 5de0: dddcd180 20000013 dddcd4f9 0000e67d df9a5ee8 dddcd1c0 dddcd180 dddcd1c0 5e00: 00000000 8220c940 0000077a df9a5e3c df9a5e40 df9a5e30 802e759c 81761c14 5e20: 60000013 ffffffff [<81761bec>] (_raw_spin_unlock_irqrestore) from [<802e759c>] (unlock_hrtimer_base kernel/time/hrtimer.c:1017 [inline]) [<81761bec>] (_raw_spin_unlock_irqrestore) from [<802e759c>] (hrtimer_start_range_ns+0x168/0x3cc kernel/time/hrtimer.c:1301) [<802e7434>] (hrtimer_start_range_ns) from [<81760914>] (hrtimer_start_expires include/linux/hrtimer.h:432 [inline]) [<802e7434>] (hrtimer_start_range_ns) from [<81760914>] (hrtimer_sleeper_start_expires kernel/time/hrtimer.c:1965 [inline]) [<802e7434>] (hrtimer_start_range_ns) from [<81760914>] (do_nanosleep+0x5c/0x16c kernel/time/hrtimer.c:2041) r10:00000000 r9:00000000 r8:0000c350 r7:00000001 r6:00002001 r5:83fd8000 r4:df9a5ee8 [<817608b8>] (do_nanosleep) from [<802e80f0>] (hrtimer_nanosleep+0xe4/0x164 kernel/time/hrtimer.c:2097) r7:00000001 r6:83fd8000 r5:00000000 r4:000f4240 [<802e800c>] (hrtimer_nanosleep) from [<802f1980>] (common_nsleep+0x5c/0x6c kernel/time/posix-timers.c:1236) r10:00000197 r9:83fd8000 r8:80200288 r7:00000000 r6:81804a1c r5:7ea70590 r4:00000000 [<802f1924>] (common_nsleep) from [<802f395c>] (__do_sys_clock_nanosleep kernel/time/posix-timers.c:1276 [inline]) [<802f1924>] (common_nsleep) from [<802f395c>] (sys_clock_nanosleep+0xd8/0x138 kernel/time/posix-timers.c:1254) r5:7ea70590 r4:00000000 [<802f3884>] (sys_clock_nanosleep) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:64) Exception stack(0xdf9a5fa8 to 0xdf9a5ff0) 5fa0: 00000000 00000000 00000000 00000000 7ea70580 7ea70590 5fc0: 00000000 00000000 00000000 00000197 7ea70590 7ea70580 024854c0 000001f4 5fe0: 00000000 7ea70548 0006f870 0006f898 r7:00000197 r6:00000000 r5:00000000 r4:00000000 Rebooting in 86400 seconds..