BUG: unable to handle page fault for address: fffffffffffffffb
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD bc8f067 P4D bc8f067 PUD bc91067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 8421 Comm: syz-executor.1 Not tainted 5.12.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:dst_dev_put+0x2b/0x220 net/core/dst.c:156
Code: 54 55 53 48 89 fb e8 c4 6a 73 fa 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 8b 01 00 00 48 8d 7b 3a <4c> 8b 23 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6
RSP: 0018:ffffc90000dc0d80 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: fffffffffffffffb RCX: 0000000000000100
RDX: 1fffffffffffffff RSI: ffffffff870086ac RDI: 0000000000000035
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8fa998bf
R10: ffffffff878ecb95 R11: 0000000000000000 R12: 0000000000000007
R13: fffffbfff1b8a4ac R14: 0000607f46086c60 R15: fffffffffffffffb
FS:  0000000001f94400(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffffffffffffb CR3: 000000004f365000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 rt_fibinfo_free_cpus.part.0+0xda/0x140 net/ipv4/fib_semantics.c:202
 rt_fibinfo_free_cpus net/ipv4/fib_semantics.c:194 [inline]
 fib_nh_common_release+0xff/0x330 net/ipv4/fib_semantics.c:215
 fib_nh_release net/ipv4/fib_semantics.c:227 [inline]
 free_fib_info_rcu+0x254/0x4e0 net/ipv4/fib_semantics.c:239
 rcu_do_batch kernel/rcu/tree.c:2559 [inline]
 rcu_core+0x74a/0x12f0 kernel/rcu/tree.c:2794
 __do_softirq+0x29b/0x9f6 kernel/softirq.c:345
 invoke_softirq kernel/softirq.c:221 [inline]
 __irq_exit_rcu kernel/softirq.c:422 [inline]
 irq_exit_rcu+0x134/0x200 kernel/softirq.c:434
 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1100
 </IRQ>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:632
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x25/0x40 kernel/locking/spinlock.c:199
Code: 0f 1f 44 00 00 55 48 8b 74 24 08 48 89 fd 48 83 c7 18 e8 2e fc 53 f8 48 89 ef e8 56 b2 54 f8 e8 d1 3b 74 f8 fb bf 01 00 00 00 <e8> 56 80 48 f8 65 8b 05 ff 4a fc 76 85 c0 74 02 5d c3 e8 5b a0 fa
RSP: 0018:ffffc900016ffb10 EFLAGS: 00000206
RAX: 0000000000aaa535 RBX: 0000000000000001 RCX: 1ffffffff1b89d21
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000001
RBP: ffff8880b9d35180 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8179e0b8 R11: 0000000000000001 R12: ffff8880b9d35180
R13: ffff88801e7b9c40 R14: 0000000000000000 R15: ffff88801f4f54c0
 finish_lock_switch kernel/sched/core.c:4074 [inline]
 finish_task_switch.isra.0+0x15d/0x810 kernel/sched/core.c:4191
 context_switch kernel/sched/core.c:4325 [inline]
 __schedule+0x919/0x21b0 kernel/sched/core.c:5073
 schedule+0xcf/0x270 kernel/sched/core.c:5152
 freezable_schedule include/linux/freezer.h:172 [inline]
 do_nanosleep+0x268/0x6a0 kernel/time/hrtimer.c:1896
 hrtimer_nanosleep+0x1f9/0x4a0 kernel/time/hrtimer.c:1949
 common_nsleep+0xa2/0xc0 kernel/time/posix-timers.c:1227
 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1267 [inline]
 __se_sys_clock_nanosleep kernel/time/posix-timers.c:1245 [inline]
 __x64_sys_clock_nanosleep+0x2f4/0x430 kernel/time/posix-timers.c:1245
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x48a7c1
Code: 24 0c 89 3c 24 48 89 4c 24 18 e8 aa e7 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 8b 74 24 0c 8b 3c 24 b8 e6 00 00 00 0f 05 <44> 89 c7 48 89 04 24 e8 e3 e7 ff ff 48 8b 04 24 eb 97 66 2e 0f 1f
RSP: 002b:00007ffdc6f862f0 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: ffffffffffffffda RBX: 0000000000000981 RCX: 000000000048a7c1
RDX: 00007ffdc6f86330 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffdc6f863cc R08: 0000000000000000 R09: 00007ffdc6fae090
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000032
R13: 00000000000c1876 R14: 0000000000000010 R15: 00007ffdc6f86430
Modules linked in:
CR2: fffffffffffffffb
---[ end trace 44f4f38d0e2cf8a2 ]---
RIP: 0010:dst_dev_put+0x2b/0x220 net/core/dst.c:156
Code: 54 55 53 48 89 fb e8 c4 6a 73 fa 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 8b 01 00 00 48 8d 7b 3a <4c> 8b 23 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6
RSP: 0018:ffffc90000dc0d80 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: fffffffffffffffb RCX: 0000000000000100
RDX: 1fffffffffffffff RSI: ffffffff870086ac RDI: 0000000000000035
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8fa998bf
R10: ffffffff878ecb95 R11: 0000000000000000 R12: 0000000000000007
R13: fffffbfff1b8a4ac R14: 0000607f46086c60 R15: fffffffffffffffb
FS:  0000000001f94400(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffffffffffffb CR3: 000000004f365000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400