general protection fault, probably for non-canonical address 0xdffffc0000000070: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000380-0x0000000000000387]
CPU: 1 PID: 3640 Comm: syz-executor.2 Not tainted 6.0.0-rc4-syzkaller-00859-g9f8f1933dce5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
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 80 03 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 ea 00 00 00 4c 8b bd 80 03 00 00 e9 77 fe ff ff
RSP: 0018:ffffc900001e0b00 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff88814a814000 RCX: 0000000000000100
RDX: 0000000000000070 RSI: ffffffff884f84a2 RDI: 0000000000000380
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88814a814000
R13: 0000000000000078 R14: ffff888077034280 R15: 0000000000000010
FS: 0000555555fe7400(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4c0dbdd718 CR3: 000000004fe1e000 CR4: 00000000003506e0
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+0x4c0/0x1bc0 net/rose/af_rose.c:1009
rose_loopback_timer+0x19e/0x590 net/rose/rose_loopback.c:111
call_timer_fn+0x1a0/0x6b0 kernel/time/timer.c:1474
expire_timers kernel/time/timer.c:1519 [inline]
__run_timers.part.0+0x674/0xa80 kernel/time/timer.c:1790
__run_timers kernel/time/timer.c:1768 [inline]
run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1803
__do_softirq+0x1d3/0x9c6 kernel/softirq.c:571
invoke_softirq kernel/softirq.c:445 [inline]
__irq_exit_rcu+0x123/0x180 kernel/softirq.c:650
irq_exit_rcu+0x5/0x20 kernel/softirq.c:662
sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:finish_task_switch.isra.0+0x2bf/0xc70 kernel/sched/core.c:5062
Code: 8b 3a 4c 89 e7 48 c7 02 00 00 00 00 ff d1 4d 85 ff 75 bf 4c 89 e7 e8 60 f8 ff ff e8 ab 42 2f 00 fb 65 48 8b 1c 25 80 6f 02 00 <48> 8d bb 98 15 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1
RSP: 0018:ffffc9000433f810 EFLAGS: 00000202
RAX: 0000000000a2dae3 RBX: ffff88801c0d5880 RCX: 1ffffffff1bbda09
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000433f858 R08: 0000000000000001 R09: 0000000000000001
R10: ffffed10173673f0 R11: 0000000000000000 R12: ffff8880b9b39f80
R13: ffff888020a58000 R14: 0000000000000000 R15: ffff8880b9b3a9b8
context_switch kernel/sched/core.c:5185 [inline]
__schedule+0xae7/0x52b0 kernel/sched/core.c:6494
preempt_schedule_irq+0x4e/0x90 kernel/sched/core.c:6806
irqentry_exit+0x31/0x80 kernel/entry/common.c:428
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:lock_acquire+0x1ef/0x570 kernel/locking/lockdep.c:5634
Code: f9 a2 7e 83 f8 01 0f 85 e8 02 00 00 9c 58 f6 c4 02 0f 85 fb 02 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc9000433fa78 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff92000867f51 RCX: e460fc627dc0ad1e
RDX: 1ffff1100381ac5e RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff908e8947
R10: fffffbfff211d128 R11: 0000000000000000 R12: 0000000000000002
R13: 0000000000000000 R14: ffffffff8bf89400 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:280 [inline]
rcu_read_lock include/linux/rcupdate.h:706 [inline]
path_init+0x706/0x1910 fs/namei.c:2353
path_parentat+0x22/0x1b0 fs/namei.c:2520
filename_parentat+0x1c3/0x5a0 fs/namei.c:2544
do_unlinkat+0xc4/0x650 fs/namei.c:4268
__do_sys_unlink fs/namei.c:4345 [inline]
__se_sys_unlink fs/namei.c:4343 [inline]
__x64_sys_unlink+0xc6/0x110 fs/namei.c:4343
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fa65c288bb7
Code: 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 57 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc871f2cb8 EFLAGS: 00000206 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa65c288bb7
RDX: 00007ffc871f2cf0 RSI: 00007ffc871f2cf0 RDI: 00007ffc871f2d80
RBP: 00007ffc871f2d80 R08: 0000000000000001 R09: 00007ffc871f2b50
R10: 0000555555fe8893 R11: 0000000000000206 R12: 00007fa65c2e242e
R13: 00007ffc871f3e40 R14: 0000555555fe8810 R15: 00007ffc871f3e80
Modules linked in:
---[ end trace 0000000000000000 ]---
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 80 03 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 ea 00 00 00 4c 8b bd 80 03 00 00 e9 77 fe ff ff
RSP: 0018:ffffc900001e0b00 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff88814a814000 RCX: 0000000000000100
RDX: 0000000000000070 RSI: ffffffff884f84a2 RDI: 0000000000000380
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88814a814000
R13: 0000000000000078 R14: ffff888077034280 R15: 0000000000000010
FS: 0000555555fe7400(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4c0dbdd718 CR3: 000000004fe1e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 48 c1 ea 03 shr $0x3,%rdx
4: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1)
8: 0f 85 06 01 00 00 jne 0x114
e: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
15: fc ff df
18: 48 8b 6b 20 mov 0x20(%rbx),%rbp
1c: 48 8d bd 80 03 00 00 lea 0x380(%rbp),%rdi
23: 48 89 fa mov %rdi,%rdx
26: 48 c1 ea 03 shr $0x3,%rdx
* 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction
2e: 0f 85 ea 00 00 00 jne 0x11e
34: 4c 8b bd 80 03 00 00 mov 0x380(%rbp),%r15
3b: e9 77 fe ff ff jmpq 0xfffffeb7