syzbot

------------[ cut here ]------------
WARNING: CPU: 1 PID: 0 at net/can/isotp.c:839 isotp_tx_timer_handler+0xb4a/0xf00 net/can/isotp.c:764
Modules linked in:
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.13.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:isotp_tx_timer_handler+0xb4a/0xf00 net/can/isotp.c:764
Code: 00 00 00 49 81 c4 b8 45 00 00 31 db 4c 89 e7 be 01 00 00 00 ba 01 00 00 00 31 c9 e8 10 f8 7d f8 e9 4b 02 00 00 e8 f6 db 9e f8 <0f> 0b 31 db e9 3d 02 00 00 e8 e8 db 9e f8 31 db 49 bf 00 00 00 00
RSP: 0018:ffffc90000dc0b20 EFLAGS: 00010246
RAX: ffffffff88e03dba RBX: 0000000000000000 RCX: ffff888012bcd4c0
RDX: 0000000080000101 RSI: ffffffff8e073020 RDI: 0000000000000000
RBP: ffffc90000dc0c70 R08: 0000000000000001 R09: ffffffff88e0334e
R10: 0000000000000003 R11: ffff888012bcd4c0 R12: ffff888033b20000
R13: ffff888012bcdea0 R14: 0000000000000000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200001c0 CR3: 0000000015198000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 __run_hrtimer kernel/time/hrtimer.c:1537 [inline]
 __hrtimer_run_queues+0x50b/0xa60 kernel/time/hrtimer.c:1601
 hrtimer_run_softirq+0x176/0x1e0 kernel/time/hrtimer.c:1618
 __do_softirq+0x372/0x7a6 kernel/softirq.c:559
 invoke_softirq kernel/softirq.c:433 [inline]
 __irq_exit_rcu+0x245/0x280 kernel/softirq.c:637
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1100
 </IRQ>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:647
RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:29 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline]
RIP: 0010:arch_irqs_disabled arch/x86/include/asm/irqflags.h:132 [inline]
RIP: 0010:acpi_safe_halt drivers/acpi/processor_idle.c:109 [inline]
RIP: 0010:acpi_idle_do_entry drivers/acpi/processor_idle.c:513 [inline]
RIP: 0010:acpi_idle_enter+0x430/0x780 drivers/acpi/processor_idle.c:648
Code: e3 08 44 8b 7c 24 04 0f 85 0d 01 00 00 48 8d 5c 24 40 e8 63 82 34 fd e9 0c 00 00 00 e8 09 2d 2e fd 0f 00 2d 72 a9 4e 06 fb f4 <9c> 8f 44 24 40 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df
RSP: 0018:ffffc90000d57be0 EFLAGS: 00000282
RAX: 4876c66fd6e7dd00 RBX: ffffc90000d57c20 RCX: ffffffff90e87703
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90000d57c90 R08: ffffffff81856f30 R09: ffffed1002579a99
R10: ffffed1002579a99 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff888019a18864 R14: ffff888019a18800 R15: 0000000000000001
 cpuidle_enter_state+0x509/0xe60 drivers/cpuidle/cpuidle.c:237
 cpuidle_enter+0x59/0x90 drivers/cpuidle/cpuidle.c:351
 call_cpuidle kernel/sched/idle.c:158 [inline]
 cpuidle_idle_call kernel/sched/idle.c:239 [inline]
 do_idle+0x3c8/0x620 kernel/sched/idle.c:306
 cpu_startup_entry+0x15/0x20 kernel/sched/idle.c:403
 secondary_startup_64_no_verify+0xb0/0xbb