general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 1 PID: 150 Comm: klogd Not tainted 5.10.117-syzkaller-986967-g0974b8411a58-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:dst_dev_put+0x26/0x1c0 net/core/dst.c:156 Code: 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 41 54 53 49 89 ff 49 bc 00 00 00 00 00 fc ff df e8 61 2d a6 fd 4d 89 fd 49 c1 ed 03 <43> 80 7c 25 00 00 74 08 4c 89 ff e8 7a 00 e0 fd 4d 8b 37 49 8d 7f RSP: 0000:ffffc90000160b78 EFLAGS: 00010246 RAX: ffffffff83c684ff RBX: 0000000000000001 RCX: ffff88810c76e2c0 RDX: 0000000080000100 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffc90000160ba0 R08: ffffffff840df72d R09: ffffc90000160924 R10: 000000000000000b R11: ffffffff84c00596 R12: dffffc0000000000 R13: 0000000000000000 R14: 0000607e08a3b258 R15: 0000000000000001 FS: 00007facbab80800(0000) GS:ffff8881f7300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbc4f72cff8 CR3: 000000010c7a4000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rt_fibinfo_free_cpus+0xee/0x1c0 net/ipv4/fib_semantics.c:203 fib_nh_common_release+0x8d/0x240 net/ipv4/fib_semantics.c:216 fib_nh_release net/ipv4/fib_semantics.c:228 [inline] free_fib_info_rcu+0x98/0x190 net/ipv4/fib_semantics.c:240 rcu_do_batch+0x59e/0xc40 kernel/rcu/tree.c:2485 rcu_core+0x59b/0xe30 kernel/rcu/tree.c:2726 rcu_core_si+0x9/0x10 kernel/rcu/tree.c:2739 __do_softirq+0x27e/0x596 kernel/softirq.c:305 asm_call_irq_on_stack+0xf/0x20 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline] do_softirq_own_stack+0x60/0x80 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:402 [inline] __irq_exit_rcu+0x128/0x150 kernel/softirq.c:432 irq_exit_rcu+0x9/0x10 kernel/softirq.c:444 sysvec_apic_timer_interrupt+0xbf/0xe0 arch/x86/kernel/apic/apic.c:1095 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0033:0x7facbad7c3c0 Code: c0 fa ff 0f 1f 80 00 00 00 00 48 89 f8 48 01 d0 eb 1b 0f 1f 84 00 00 00 00 00 48 39 d1 0f 82 37 c0 fa ff 0f 1f 80 00 00 00 00 <48> 89 f8 48 83 fa 20 72 5c 48 83 fa 40 0f 87 b2 00 00 00 c5 fe 6f RSP: 002b:00007ffcda261218 EFLAGS: 00000246 RAX: 0000000000001ff2 RBX: 0000000000000003 RCX: 0000000000000002 RDX: 0000000000000002 RSI: 00007ffcda261294 RDI: 0000555d94443c5e RBP: 0000555d94443c5e R08: 00007ffcda261294 R09: 0000000000000002 R10: 0000000000000000 R11: 0000555d94443c5b R12: 0000000000000002 R13: 0000000000000000 R14: 00007facbada2744 R15: 0000000000000000 Modules linked in: ---[ end trace 9badfce2fc7bf8ca ]--- RIP: 0010:dst_dev_put+0x26/0x1c0 net/core/dst.c:156 Code: 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 41 54 53 49 89 ff 49 bc 00 00 00 00 00 fc ff df e8 61 2d a6 fd 4d 89 fd 49 c1 ed 03 <43> 80 7c 25 00 00 74 08 4c 89 ff e8 7a 00 e0 fd 4d 8b 37 49 8d 7f RSP: 0000:ffffc90000160b78 EFLAGS: 00010246 RAX: ffffffff83c684ff RBX: 0000000000000001 RCX: ffff88810c76e2c0 RDX: 0000000080000100 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffc90000160ba0 R08: ffffffff840df72d R09: ffffc90000160924 R10: 000000000000000b R11: ffffffff84c00596 R12: dffffc0000000000 R13: 0000000000000000 R14: 0000607e08a3b258 R15: 0000000000000001 FS: 00007facbab80800(0000) GS:ffff8881f7300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbc4f72cff8 CR3: 000000010c7a4000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 00 00 add %al,(%rax) 4: 55 push %rbp 5: 48 89 e5 mov %rsp,%rbp 8: 41 57 push %r15 a: 41 56 push %r14 c: 41 55 push %r13 e: 41 54 push %r12 10: 53 push %rbx 11: 49 89 ff mov %rdi,%r15 14: 49 bc 00 00 00 00 00 movabs $0xdffffc0000000000,%r12 1b: fc ff df 1e: e8 61 2d a6 fd callq 0xfda62d84 23: 4d 89 fd mov %r15,%r13 26: 49 c1 ed 03 shr $0x3,%r13 * 2a: 43 80 7c 25 00 00 cmpb $0x0,0x0(%r13,%r12,1) <-- trapping instruction 30: 74 08 je 0x3a 32: 4c 89 ff mov %r15,%rdi 35: e8 7a 00 e0 fd callq 0xfde000b4 3a: 4d 8b 37 mov (%r15),%r14 3d: 49 rex.WB 3e: 8d .byte 0x8d 3f: 7f .byte 0x7f