general protection fault, probably for non-canonical address 0xdffffc00000138b1: 0000 [#1] PREEMPT SMP KASAN KASAN: probably user-memory-access in range [0x000000000009c588-0x000000000009c58f] CPU: 0 PID: 13 Comm: ksoftirqd/0 Not tainted 5.15.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:dst_dev_put+0x1f/0x2b0 net/core/dst.c:154 Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 41 55 41 54 55 53 48 89 fb e8 32 c3 54 fa 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 29 02 00 00 48 8d 7b 3a 4c 8b 23 48 b8 00 00 00 RSP: 0018:ffffc90000d27c38 EFLAGS: 00010207 RAX: dffffc0000000000 RBX: 000000000009c58f RCX: 0000000000000100 RDX: 00000000000138b1 RSI: ffffffff8721487e RDI: 000000000009c58f RBP: 0000000000000000 R08: 0000000000000000 R09: ffff88807afd05ab R10: ffffffff87b45e80 R11: 0000000000086089 R12: dffffc0000000000 R13: 0000607f46035658 R14: ffffffff8d6e52a4 R15: 000000000009c58f FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9d11a25010 CR3: 000000000b68e000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: rt_fibinfo_free_cpus.part.0+0xf5/0x180 net/ipv4/fib_semantics.c:202 rt_fibinfo_free_cpus net/ipv4/fib_semantics.c:194 [inline] fib_nh_common_release+0x10c/0x330 net/ipv4/fib_semantics.c:213 fib_nh_release net/ipv4/fib_semantics.c:225 [inline] free_fib_info_rcu+0x24b/0x4e0 net/ipv4/fib_semantics.c:237 rcu_do_batch kernel/rcu/tree.c:2508 [inline] rcu_core+0x7ab/0x1470 kernel/rcu/tree.c:2743 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558 run_ksoftirqd kernel/softirq.c:920 [inline] run_ksoftirqd+0x2d/0x60 kernel/softirq.c:912 smpboot_thread_fn+0x645/0x9c0 kernel/smpboot.c:164 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Modules linked in: ---[ end trace 88bcc103918b8539 ]--- RIP: 0010:dst_dev_put+0x1f/0x2b0 net/core/dst.c:154 Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 41 55 41 54 55 53 48 89 fb e8 32 c3 54 fa 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 29 02 00 00 48 8d 7b 3a 4c 8b 23 48 b8 00 00 00 RSP: 0018:ffffc90000d27c38 EFLAGS: 00010207 RAX: dffffc0000000000 RBX: 000000000009c58f RCX: 0000000000000100 RDX: 00000000000138b1 RSI: ffffffff8721487e RDI: 000000000009c58f RBP: 0000000000000000 R08: 0000000000000000 R09: ffff88807afd05ab R10: ffffffff87b45e80 R11: 0000000000086089 R12: dffffc0000000000 R13: 0000607f46035658 R14: ffffffff8d6e52a4 R15: 000000000009c58f FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9d11a25010 CR3: 000000000b68e000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 ---------------- Code disassembly (best guess): 0: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1) 7: 00 8: 0f 1f 00 nopl (%rax) b: 41 55 push %r13 d: 41 54 push %r12 f: 55 push %rbp 10: 53 push %rbx 11: 48 89 fb mov %rdi,%rbx 14: e8 32 c3 54 fa callq 0xfa54c34b 19: 48 89 da mov %rbx,%rdx 1c: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 23: fc ff df 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 29 02 00 00 jne 0x25d 34: 48 8d 7b 3a lea 0x3a(%rbx),%rdi 38: 4c 8b 23 mov (%rbx),%r12 3b: 48 rex.W 3c: b8 .byte 0xb8 3d: 00 00 add %al,(%rax)