general protection fault, probably for non-canonical address 0xdffffc0000000069: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000348-0x000000000000034f] CPU: 1 PID: 8078 Comm: syz-executor.1 Not tainted 5.5.0-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 48 03 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 08 01 00 00 49 8b 91 48 03 00 00 e9 e3 fe ff ff RSP: 0018:ffff8880aed09ad8 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffff888215dbb800 RCX: 0000000000000006 RDX: 0000000000000069 RSI: ffffffff87cc49c0 RDI: 0000000000000348 RBP: ffff8880aed09b08 R08: ffffed1012212c9d R09: 0000000000000000 R10: ffffed1012212c9c R11: ffff8880910964e3 R12: ffff888215dbb800 R13: 0000000000000078 R14: ffff888091dcd6c0 R15: ffff888091dcd6c0 FS: 0000000000f29940(0000) GS:ffff8880aed00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000180 CR3: 00000000913c9000 CR4: 00000000001406e0 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+0x399/0x2258 net/rose/af_rose.c:976 rose_loopback_timer+0x11f/0x430 net/rose/rose_loopback.c:100 call_timer_fn+0x169/0x570 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers kernel/time/timer.c:1773 [inline] run_timer_softirq+0xd58/0x1330 kernel/time/timer.c:1786 __do_softirq+0x262/0x9a8 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:536 [inline] smp_apic_timer_interrupt+0x1a6/0x5f0 arch/x86/kernel/apic/apic.c:1137 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 RIP: 0010:do_dentry_open+0xb68/0x1000 fs/open.c:795 Code: c1 ea 03 80 3c 02 00 0f 85 b6 03 00 00 48 ba 00 00 00 00 00 fc ff df 49 8b 47 28 48 8d 78 70 48 89 fe 48 c1 ee 03 80 3c 16 00 <0f> 85 6f 03 00 00 48 8b 40 70 48 85 c0 48 89 85 50 ff ff ff 0f 84 RSP: 0018:ffff8880900af960 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: ffffffff87374a60 RBX: ffff888090ffb640 RCX: 000000000001801e RDX: dffffc0000000000 RSI: 1ffffffff0e6e95a RDI: ffffffff87374ad0 RBP: ffff8880900afa38 R08: 1ffff110121ff708 R09: 0000000000000000 R10: fffffbfff124a8c8 R11: ffffffff89254647 R12: ffff8880a110d0bc R13: 0000000000000000 R14: ffff8880a110d068 R15: ffff8880a110d040 vfs_open+0x9a/0xc0 fs/open.c:914 do_last fs/namei.c:3490 [inline] path_openat+0x8fb/0x2d40 fs/namei.c:3607 do_filp_open+0x171/0x240 fs/namei.c:3637 do_sys_openat2+0x2e0/0x510 fs/open.c:1149 do_sys_open+0x90/0xe0 fs/open.c:1165 ksys_open include/linux/syscalls.h:1386 [inline] __do_sys_open fs/open.c:1171 [inline] __se_sys_open fs/open.c:1169 [inline] __x64_sys_open+0x79/0xb0 fs/open.c:1169 do_syscall_64+0xca/0x5f0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4136f0 Code: 05 48 3d 01 f0 ff ff 0f 83 2d 19 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 83 3d 9d 2b 66 00 00 75 14 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 04 19 00 00 c3 48 83 ec 08 e8 0a fa ff ff RSP: 002b:00007ffcfd695f28 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007ffcfd695f54 RCX: 00000000004136f0 RDX: 00007ffcfd695f5a RSI: 0000000000080001 RDI: 00000000004bf0b8 RBP: 00007ffcfd695f50 R08: 0000000000000000 R09: 0000000000000004 R10: 0000000000000075 R11: 0000000000000246 R12: 00000000004bf0b8 R13: 00007ffcfd696470 R14: 0000000000000000 R15: 00007ffcfd696480 Modules linked in: ---[ end trace 791ce3cff17c9ffb ]--- 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 48 03 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 08 01 00 00 49 8b 91 48 03 00 00 e9 e3 fe ff ff RSP: 0018:ffff8880aed09ad8 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffff888215dbb800 RCX: 0000000000000006 RDX: 0000000000000069 RSI: ffffffff87cc49c0 RDI: 0000000000000348 RBP: ffff8880aed09b08 R08: ffffed1012212c9d R09: 0000000000000000 R10: ffffed1012212c9c R11: ffff8880910964e3 R12: ffff888215dbb800 R13: 0000000000000078 R14: ffff888091dcd6c0 R15: ffff888091dcd6c0 FS: 0000000000f29940(0000) GS:ffff8880aed00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000180 CR3: 00000000913c9000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400