------------[ cut here ]------------ WARNING: CPU: 1 PID: 54 at net/can/isotp.c:841 isotp_tx_timer_handler+0x717/0xcd0 net/can/isotp.c:841 Modules linked in: CPU: 1 PID: 54 Comm: kworker/u4:3 Not tainted 5.17.0-rc1-next-20220128-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_nc_worker RIP: 0010:isotp_tx_timer_handler+0x717/0xcd0 net/can/isotp.c:841 Code: f9 44 0f b6 25 f0 0b 68 05 31 ff 44 89 e6 e8 90 13 3f f9 45 84 e4 0f 85 9d fa ff ff e9 e6 07 21 01 85 ed 75 52 e8 99 0f 3f f9 <0f> 0b 45 31 e4 e8 8f 0f 3f f9 48 8b 74 24 40 48 b8 00 00 00 00 00 RSP: 0018:ffffc90000dc0d50 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff88803eec8568 RCX: 0000000000000100 RDX: ffff888017f70000 RSI: ffffffff88398fc7 RDI: 0000000000000003 RBP: 0000000000000000 R08: ffffffff8ae49140 R09: ffffffff8839895f R10: 0000000000000003 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8880b9d2a880 R14: ffff8880b9d2a600 R15: ffffffff883988b0 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2e821000 CR3: 0000000035d2d000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x609/0xe50 kernel/time/hrtimer.c:1749 hrtimer_run_softirq+0x17b/0x360 kernel/time/hrtimer.c:1766 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:__local_bh_enable_ip+0xa8/0x120 kernel/softirq.c:390 Code: 1d 7d 30 bb 7e 65 8b 05 76 30 bb 7e a9 00 ff ff 00 74 45 bf 01 00 00 00 e8 e5 40 09 00 e8 d0 a5 37 00 fb 65 8b 05 58 30 bb 7e <85> c0 74 58 5b 5d c3 65 8b 05 a6 37 bb 7e 85 c0 75 a2 0f 0b eb 9e RSP: 0018:ffffc90001a2fc00 EFLAGS: 00000202 RAX: 0000000080000000 RBX: 00000000fffffe00 RCX: 1ffffffff204ae0e RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffffff88f84a45 R08: 0000000000000001 R09: ffffffff90201a27 R10: 0000000000000001 R11: 0000000000000000 R12: ffff88807b63d7e8 R13: ffff88807b63ccc0 R14: dffffc0000000000 R15: ffffffff88f84b40 spin_unlock_bh include/linux/spinlock.h:399 [inline] batadv_nc_purge_paths+0x2a5/0x3a0 net/batman-adv/network-coding.c:471 batadv_nc_worker+0x930/0xfa0 net/batman-adv/network-coding.c:722 process_one_work+0x996/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e9/0x3a0 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 ---------------- Code disassembly (best guess): 0: 1d 7d 30 bb 7e sbb $0x7ebb307d,%eax 5: 65 8b 05 76 30 bb 7e mov %gs:0x7ebb3076(%rip),%eax # 0x7ebb3082 c: a9 00 ff ff 00 test $0xffff00,%eax 11: 74 45 je 0x58 13: bf 01 00 00 00 mov $0x1,%edi 18: e8 e5 40 09 00 callq 0x94102 1d: e8 d0 a5 37 00 callq 0x37a5f2 22: fb sti 23: 65 8b 05 58 30 bb 7e mov %gs:0x7ebb3058(%rip),%eax # 0x7ebb3082 * 2a: 85 c0 test %eax,%eax <-- trapping instruction 2c: 74 58 je 0x86 2e: 5b pop %rbx 2f: 5d pop %rbp 30: c3 retq 31: 65 8b 05 a6 37 bb 7e mov %gs:0x7ebb37a6(%rip),%eax # 0x7ebb37de 38: 85 c0 test %eax,%eax 3a: 75 a2 jne 0xffffffde 3c: 0f 0b ud2 3e: eb 9e jmp 0xffffffde