BUG: unable to handle kernel paging request at ffffde20264bc7ab #PF error: [normal kernel read fault] PGD 0 P4D 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 27959 Comm: syz-executor.2 Not tainted 5.1.0-rc7+ #193 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:iptunnel_xmit_stats include/net/ip_tunnels.h:444 [inline] RIP: 0010:iptunnel_xmit+0x6ed/0x980 net/ipv4/ip_tunnel_core.c:94 Code: c1 e9 03 80 3c 11 00 0f 85 72 02 00 00 48 03 1c c5 60 a0 6b 88 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 18 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 5d 02 00 00 48 8d 7b 10 4d 63 e4 48 b8 00 00 00 RSP: 0018:ffff8880ae807888 EFLAGS: 00010a02 RAX: dffffc0000000000 RBX: ffff1101325e3d40 RCX: 1ffffffff10d740c RDX: 1fffe220264bc7ab RSI: ffffffff83317f8c RDI: ffff1101325e3d58 RBP: ffff8880ae8078e8 R08: ffff88808e824180 R09: ffffed1015d05bc8 R10: ffffed1015d05bc7 R11: ffff8880ae82de3b R12: 00000000000000fc R13: ffff888099348900 R14: ffff88809cc41b94 R15: ffff8880630d7540 FS: 00007f44f9331700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffde20264bc7ab CR3: 000000006cb09000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: udp_tunnel_xmit_skb+0x236/0x310 net/ipv4/udp_tunnel.c:191 tipc_udp_xmit.isra.0+0x805/0xcc0 net/tipc/udp_media.c:181 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 RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x50 kernel/kcov.c:95 Code: 89 25 b4 7e ec 08 41 bc f4 ff ff ff e8 cd 5d ea ff 48 c7 05 9e 7e ec 08 00 00 00 00 e9 a4 e9 ff ff 90 90 90 90 90 90 90 90 90 <55> 48 89 e5 48 8b 75 08 65 48 8b 04 25 00 ee 01 00 65 8b 15 c8 60 RSP: 0018:ffff88805905f5f0 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 RAX: ffff88808e824180 RBX: 0000000000000002 RCX: ffffffff83317f7e RDX: 0000000000000000 RSI: ffffffff83317f87 RDI: 0000000000000005 RBP: ffff88805905f618 R08: ffff88808e824180 R09: ffffffff895e69d4 R10: ffff88808e824a28 R11: ffff88808e824180 R12: 0000000000000000 R13: ffffea0002483988 R14: 0000000000000000 R15: dead000000000100 rcu_dynticks_curr_cpu_in_eqs+0x17/0xb0 kernel/rcu/tree.c:295 rcu_is_watching+0x10/0x30 kernel/rcu/tree.c:944 rcu_read_lock+0x43/0x70 include/linux/rcupdate.h:596 lock_page_memcg+0x19/0x1d0 mm/memcontrol.c:1897 page_remove_file_rmap mm/rmap.c:1217 [inline] page_remove_rmap+0x53d/0x12c0 mm/rmap.c:1302 zap_pte_range mm/memory.c:1091 [inline] zap_pmd_range mm/memory.c:1193 [inline] zap_pud_range mm/memory.c:1222 [inline] zap_p4d_range mm/memory.c:1243 [inline] unmap_page_range+0xd70/0x2330 mm/memory.c:1264 unmap_single_vma+0x19d/0x300 mm/memory.c:1309 unmap_vmas+0x115/0x250 mm/memory.c:1340 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:00007f44f9330cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 000000000073bfa8 RCX: 0000000000458da9 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000073bfa8 RBP: 000000000073bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000073bfac R13: 00007ffd3c7dd78f R14: 00007f44f93319c0 R15: 000000000073bfac Modules linked in: CR2: ffffde20264bc7ab ---[ end trace a7a868145bd0e905 ]--- RIP: 0010:iptunnel_xmit_stats include/net/ip_tunnels.h:444 [inline] RIP: 0010:iptunnel_xmit+0x6ed/0x980 net/ipv4/ip_tunnel_core.c:94 Code: c1 e9 03 80 3c 11 00 0f 85 72 02 00 00 48 03 1c c5 60 a0 6b 88 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 18 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 5d 02 00 00 48 8d 7b 10 4d 63 e4 48 b8 00 00 00 RSP: 0018:ffff8880ae807888 EFLAGS: 00010a02 RAX: dffffc0000000000 RBX: ffff1101325e3d40 RCX: 1ffffffff10d740c RDX: 1fffe220264bc7ab RSI: ffffffff83317f8c RDI: ffff1101325e3d58 RBP: ffff8880ae8078e8 R08: ffff88808e824180 R09: ffffed1015d05bc8 R10: ffffed1015d05bc7 R11: ffff8880ae82de3b R12: 00000000000000fc R13: ffff888099348900 R14: ffff88809cc41b94 R15: ffff8880630d7540 FS: 00007f44f9331700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffde20264bc7ab CR3: 000000006cb09000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400