general protection fault, probably for non-canonical address 0xdffffc000000006a: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000350-0x0000000000000357] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:rose_send_frame+0x161/0x290 net/rose/rose_link.c:101 Code: 41 5e 5d c3 80 3c 02 00 0f 85 24 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 4b 20 49 8d b9 50 03 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 08 01 00 00 49 8b 91 50 03 00 00 e9 e3 fe ff ff RSP: 0018:ffff8880aea09ad8 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffff88809a8e4800 RCX: 0000000000000006 RDX: 000000000000006a RSI: ffffffff87eea020 RDI: 0000000000000350 RBP: ffff8880aea09b08 R08: ffffed101415de9d R09: 0000000000000000 R10: ffff8880a0aef4e3 R11: ffffed101415de9c R12: ffff88809a8e4800 R13: 0000000000000078 R14: ffff88809981b6c0 R15: ffff88809981b6c0 FS: 0000000000000000(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055f565cacdf0 CR3: 00000000930f4000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rose_transmit_clear_request+0x1d0/0x290 net/rose/rose_link.c:255 rose_rx_call_request+0x399/0x225d net/rose/af_rose.c:976 rose_loopback_timer+0x11f/0x430 net/rose/rose_loopback.c:100 call_timer_fn+0x171/0x580 kernel/time/timer.c:1405 expire_timers kernel/time/timer.c:1450 [inline] __run_timers kernel/time/timer.c:1774 [inline] run_timer_softirq+0xd58/0x1330 kernel/time/timer.c:1787 __do_softirq+0x262/0xa02 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x19a/0x1d0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:546 [inline] smp_apic_timer_interrupt+0x1a6/0x5f0 arch/x86/kernel/apic/apic.c:1140 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 RIP: 0010:native_safe_halt+0x12/0x20 arch/x86/include/asm/irqflags.h:61 Code: fe ff ff 48 89 df e8 2d 35 af fa eb 9c cc cc cc cc cc cc cc cc cc cc cc 55 48 89 e5 e9 07 00 00 00 0f 00 2d 50 ba 56 00 fb f4 <5d> c3 66 90 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 e9 07 00 00 RSP: 0018:ffffffff88807cd8 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: ffffffff88886480 RCX: 0000000000000000 RDX: 1ffffffff1128d67 RSI: 0000000000000006 RDI: ffffffff88946b38 RBP: ffffffff88807cd8 R08: 0000000000000006 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: fffffbfff1128d65 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 arch_safe_halt arch/x86/include/asm/paravirt.h:144 [inline] default_idle+0x51/0x340 arch/x86/kernel/process.c:697 arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:688 default_idle_call+0x87/0xa0 kernel/sched/idle.c:94 cpuidle_idle_call kernel/sched/idle.c:154 [inline] do_idle+0x4b5/0x6d0 kernel/sched/idle.c:269 cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:361 rest_init+0x19a/0x26f init/main.c:703 arch_call_rest_init+0x9/0xc start_kernel+0x7f5/0x830 init/main.c:1040 x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:490 x86_64_start_kernel+0x76/0x79 arch/x86/kernel/head64.c:471 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:242 Modules linked in: ---[ end trace 8d405a900ff03895 ]--- RIP: 0010:rose_send_frame+0x161/0x290 net/rose/rose_link.c:101 Code: 41 5e 5d c3 80 3c 02 00 0f 85 24 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 4b 20 49 8d b9 50 03 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 08 01 00 00 49 8b 91 50 03 00 00 e9 e3 fe ff ff RSP: 0018:ffff8880aea09ad8 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffff88809a8e4800 RCX: 0000000000000006 RDX: 000000000000006a RSI: ffffffff87eea020 RDI: 0000000000000350 RBP: ffff8880aea09b08 R08: ffffed101415de9d R09: 0000000000000000 R10: ffff8880a0aef4e3 R11: ffffed101415de9c R12: ffff88809a8e4800 R13: 0000000000000078 R14: ffff88809981b6c0 R15: ffff88809981b6c0 FS: 0000000000000000(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055f565cacdf0 CR3: 00000000930f4000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400