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: 6811 Comm: syz-executor.0 Not tainted 5.8.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:rose_send_frame+0x1dd/0x2f0 net/rose/rose_link.c:101 Code: 48 c1 ea 03 80 3c 02 00 0f 85 06 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 6b 20 48 8d bd 50 03 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 ea 00 00 00 4c 8b bd 50 03 00 00 e9 77 fe ff ff RSP: 0018:ffffc90000007b18 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffff88809962c800 RCX: ffffffff871129e3 RDX: 000000000000006a RSI: ffffffff87112b52 RDI: 0000000000000350 RBP: 0000000000000000 R08: 0000000000000001 R09: ffff88805d8240e3 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809962c800 R13: 0000000000000078 R14: ffff88805e2a0040 R15: 0000000000000010 FS: 0000000002b76940(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000043e3e0 CR3: 000000009f757000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rose_transmit_clear_request+0x1d5/0x290 net/rose/rose_link.c:255 rose_rx_call_request+0x4bd/0x1978 net/rose/af_rose.c:998 rose_loopback_timer+0x15d/0x470 net/rose/rose_loopback.c:100 call_timer_fn+0x1ac/0x760 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers.part.0+0x54c/0xa20 kernel/time/timer.c:1773 __run_timers kernel/time/timer.c:1745 [inline] run_timer_softirq+0xae/0x1a0 kernel/time/timer.c:1786 __do_softirq+0x34c/0xa60 kernel/softirq.c:292 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:711 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] do_softirq_own_stack+0x111/0x170 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:387 [inline] __irq_exit_rcu kernel/softirq.c:417 [inline] irq_exit_rcu+0x229/0x270 kernel/softirq.c:429 sysvec_apic_timer_interrupt+0x54/0x120 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:587 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:765 [inline] RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x8c/0xe0 kernel/locking/spinlock.c:191 Code: 48 c7 c0 80 e0 b4 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 37 48 83 3d 3b 46 ca 01 00 74 22 48 89 df 57 9d <0f> 1f 44 00 00 bf 01 00 00 00 e8 35 d8 64 f9 65 8b 05 5e 64 17 78 RSP: 0018:ffffc9000174fd50 EFLAGS: 00000282 RAX: 1ffffffff1369c10 RBX: 0000000000000282 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000282 RBP: ffffffff8caf2428 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff8caf2420 R13: ffffffff89bd0d40 R14: ffffc9000174fde0 R15: ffffffff8caf2428 debug_object_free lib/debugobjects.c:827 [inline] debug_object_free+0x1c0/0x350 lib/debugobjects.c:800 destroy_hrtimer_on_stack kernel/time/hrtimer.c:453 [inline] hrtimer_nanosleep+0x228/0x430 kernel/time/hrtimer.c:1947 __do_sys_nanosleep kernel/time/hrtimer.c:1966 [inline] __se_sys_nanosleep kernel/time/hrtimer.c:1953 [inline] __x64_sys_nanosleep+0x1dc/0x260 kernel/time/hrtimer.c:1953 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:384 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45b0b0 Code: Bad RIP value. RSP: 002b:00007ffe6c7ec518 EFLAGS: 00000246 ORIG_RAX: 0000000000000023 RAX: ffffffffffffffda RBX: 00000000000edb53 RCX: 000000000045b0b0 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007ffe6c7ec520 RBP: 00000000000008fe R08: 0000000000000001 R09: 0000000002b76940 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 R13: 00007ffe6c7ec570 R14: 00000000000edb0c R15: 00007ffe6c7ec580 Modules linked in: ---[ end trace d7e7798095a10860 ]--- RIP: 0010:rose_send_frame+0x1dd/0x2f0 net/rose/rose_link.c:101 Code: 48 c1 ea 03 80 3c 02 00 0f 85 06 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 6b 20 48 8d bd 50 03 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 ea 00 00 00 4c 8b bd 50 03 00 00 e9 77 fe ff ff RSP: 0018:ffffc90000007b18 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffff88809962c800 RCX: ffffffff871129e3 RDX: 000000000000006a RSI: ffffffff87112b52 RDI: 0000000000000350 RBP: 0000000000000000 R08: 0000000000000001 R09: ffff88805d8240e3 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809962c800 R13: 0000000000000078 R14: ffff88805e2a0040 R15: 0000000000000010 FS: 0000000002b76940(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000043e3e0 CR3: 000000009f757000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400