kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 5816 Comm: syz-executor.3 Not tainted 5.1.0-rc7+ #97 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:dst_dev_put+0xa0/0x290 net/core/dst.c:175 Code: fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 e4 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 6b 08 49 8d 7d 38 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 b7 01 00 00 4d 8b 75 38 4d 89 e5 4d 85 f6 74 33 RSP: 0018:ffff8880ae8075f0 EFLAGS: 00010a07 RAX: dffffc0000000000 RBX: ffff88808ea22b05 RCX: ffff88808ea22b05 RDX: 1ff0ff8a1c400006 RSI: ffffffff857dcc33 RDI: ff87fc50e2000037 RBP: ffff8880ae807610 R08: 1ffffd1ffff8d5a0 R09: fffff91ffff8d5a1 R10: fffff91ffff8d5a0 R11: ffffe8ffffc6ad07 R12: ff893bb080ffff88 R13: ff87fc50e1ffffff R14: ffff8880ae8076a0 R15: 0000000000000001 FS: 00007f274213b700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000002e70f000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> rt_cache_route+0x2c8/0x310 net/ipv4/route.c:1473 rt_set_nexthop.constprop.0+0x558/0x11c0 net/ipv4/route.c:1573 __mkroute_output net/ipv4/route.c:2334 [inline] ip_route_output_key_hash_rcu+0xa52/0x30e0 net/ipv4/route.c:2533 ip_route_output_key_hash+0x212/0x380 net/ipv4/route.c:2362 __ip_route_output_key include/net/route.h:124 [inline] ip_route_output_flow+0x28/0xc0 net/ipv4/route.c:2617 ip_route_output_key include/net/route.h:134 [inline] tipc_udp_xmit.isra.0+0x565/0xcc0 net/tipc/udp_media.c:173 tipc_udp_send_msg+0x295/0x4a0 net/tipc/udp_media.c:247 tipc_bearer_xmit_skb+0x172/0x360 net/tipc/bearer.c:503 tipc_disc_timeout+0x933/0xd60 net/tipc/discover.c:332 call_timer_fn+0x190/0x720 kernel/time/timer.c:1325 expire_timers kernel/time/timer.c:1362 [inline] __run_timers kernel/time/timer.c:1681 [inline] __run_timers kernel/time/timer.c:1649 [inline] run_timer_softirq+0x652/0x1700 kernel/time/timer.c:1694 __do_softirq+0x266/0x95a kernel/softirq.c:293 invoke_softirq kernel/softirq.c:374 [inline] irq_exit+0x180/0x1d0 kernel/softirq.c:414 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x14a/0x570 arch/x86/kernel/apic/apic.c:1062 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807 </IRQ> RIP: 0010:unmap_vmas+0x145/0x250 mm/memory.c:1339 Code: f8 48 c1 e8 03 42 80 3c 28 00 0f 85 f4 00 00 00 48 8b 5b 10 48 85 db 74 2a e8 f7 2c d5 ff 48 89 d8 48 c1 e8 03 42 80 3c 28 00 <0f> 85 c7 00 00 00 4c 8b 3b 4c 89 e6 4c 89 ff e8 f7 2d d5 ff 4d 39 RSP: 0018:ffff88806c2bf8c8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 1ffff1101509384a RBX: ffff8880a849c250 RCX: 1ffff1100d857efc RDX: 0000000000000000 RSI: ffffffff819b5fb9 RDI: ffff88808e537220 RBP: ffff88806c2bf980 R08: ffff888071a5c440 R09: ffffed100babfa43 R10: ffffed100babfa42 R11: ffff88805d5fd213 R12: ffffffffffffffff R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000950000 exit_mmap+0x2c2/0x530 mm/mmap.c:3143 __mmput kernel/fork.c:1046 [inline] mmput+0x15f/0x4c0 kernel/fork.c:1067 exit_mm kernel/exit.c:546 [inline] do_exit+0x816/0x2fa0 kernel/exit.c:863 do_group_exit+0x135/0x370 kernel/exit.c:980 get_signal+0x399/0x1d50 kernel/signal.c:2577 do_signal+0x87/0x1940 arch/x86/kernel/signal.c:816 exit_to_usermode_loop+0x244/0x2c0 arch/x86/entry/common.c:162 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x52d/0x610 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x458da9 Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f274213acf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: 0000000000000001 RBX: 000000000073bf08 RCX: 0000000000458da9 RDX: 00000000004cf138 RSI: 0000000000000081 RDI: 000000000073bf0c RBP: 000000000073bf00 R08: 0000000000000009 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 000000000073bf0c R13: 0000000000a4fb4f R14: 00007f274213b9c0 R15: 000000000073bf0c Modules linked in: ---[ end trace 7c41d381c73cc97d ]--- RIP: 0010:dst_dev_put+0xa0/0x290 net/core/dst.c:175 Code: fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 e4 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 6b 08 49 8d 7d 38 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 b7 01 00 00 4d 8b 75 38 4d 89 e5 4d 85 f6 74 33 RSP: 0018:ffff8880ae8075f0 EFLAGS: 00010a07 RAX: dffffc0000000000 RBX: ffff88808ea22b05 RCX: ffff88808ea22b05 RDX: 1ff0ff8a1c400006 RSI: ffffffff857dcc33 RDI: ff87fc50e2000037 RBP: ffff8880ae807610 R08: 1ffffd1ffff8d5a0 R09: fffff91ffff8d5a1