BUG: unable to handle page fault for address: ffffde2026b7819b #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 1457 Comm: syz-executor.3 Not tainted 5.1.0+ #8 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+0x6e5/0x970 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 70 6f 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: 0000:ffff8880ae809878 EFLAGS: 00010a02 RAX: dffffc0000000000 RBX: ffff110135bc0cc0 RCX: 1ffffffff10dee0c RDX: 1fffe22026b7819b RSI: ffffffff8334ff3c RDI: ffff110135bc0cd8 RBP: ffff8880ae8098d8 R08: ffff8880978b0140 R09: ffffed1015d06be0 R10: ffffed1015d06bdf R11: ffff8880ae835efb R12: 00000000000000fc R13: ffff8880a7ef6840 R14: ffff88806e6f6e14 R15: ffff8880a0e0bac0 FS: 00000000023e2940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffde2026b7819b CR3: 0000000069628000 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+0x196/0x720 kernel/time/timer.c:1322 expire_timers kernel/time/timer.c:1366 [inline] __run_timers kernel/time/timer.c:1685 [inline] __run_timers kernel/time/timer.c:1653 [inline] run_timer_softirq+0x66f/0x1740 kernel/time/timer.c:1698 __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:1067 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:806 RIP: 0010:arch_local_save_flags arch/x86/include/asm/paravirt.h:762 [inline] RIP: 0010:arch_local_irq_save arch/x86/include/asm/paravirt.h:784 [inline] RIP: 0010:lock_is_held_type+0x89/0x320 kernel/locking/lockdep.c:4336 Code: 02 00 00 48 c7 c0 e8 6b 92 88 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 58 02 00 00 48 83 3d af 78 3b 07 00 <0f> 84 0a 02 00 00 9c 58 0f 1f 44 00 00 48 ba 00 00 00 00 00 fc ff RSP: 0000:ffff888078d879e0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff1124d7d RBX: 0000000000000000 RCX: 1ffffffff12c0c02 RDX: dffffc0000000000 RSI: 00000000ffffffff RDI: ffff8880978b09bc RBP: ffff888078d87a28 R08: ffff8880978b0140 R09: ffffed1012becd17 R10: ffffed1012becd16 R11: ffff888095f668b7 R12: ffff8880978b0140 R13: 00000000000001d5 R14: ffffffff889a2600 R15: ffff888095f66930 lock_is_held include/linux/lockdep.h:356 [inline] ___might_sleep+0x1c4/0x280 kernel/sched/core.c:6102 __might_sleep+0x95/0x190 kernel/sched/core.c:6090 lock_page include/linux/pagemap.h:469 [inline] block_page_mkwrite+0xa4/0x310 fs/buffer.c:2468 ext4_page_mkwrite+0xcd2/0x13b0 fs/ext4/inode.c:6210 do_page_mkwrite+0xe2/0x480 mm/memory.c:2152 wp_page_shared mm/memory.c:2450 [inline] do_wp_page+0xba7/0x1500 mm/memory.c:2562 handle_pte_fault mm/memory.c:3826 [inline] __handle_mm_fault+0x22e8/0x3ec0 mm/memory.c:3934 handle_mm_fault+0x43f/0xb30 mm/memory.c:3971 do_user_addr_fault arch/x86/mm/fault.c:1457 [inline] __do_page_fault+0x5ef/0xda0 arch/x86/mm/fault.c:1523 do_page_fault+0x71/0x581 arch/x86/mm/fault.c:1554 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1142 RIP: 0033:0x40b82e Code: 00 00 00 48 89 ea 48 89 de 0f 85 dd 00 00 00 e8 38 2c 00 00 8b 05 e2 c7 32 00 48 8b 15 73 4c 64 00 83 c0 01 89 05 d2 c7 32 00 <89> 02 48 83 c4 08 5b 5d 41 5c 41 5d 41 5e 41 5f c3 90 4c 89 e8 48 RSP: 002b:00007ffce4b97490 EFLAGS: 00010206 RAX: 0000000000000006 RBX: 0000001b2c024274 RCX: 0000001b2d020000 RDX: 0000001b2c020000 RSI: 00000000ffffffff RDI: 00000000ffffffff RBP: 0000001b2c024278 R08: 000000008132f1ba R09: ffffffffffffffff R10: 00007ffce4b975d0 R11: 0000000000000000 R12: 0000001b2c02427c R13: 000000000073c900 R14: 000000000073bf00 R15: 000000000073c04c Modules linked in: CR2: ffffde2026b7819b ---[ end trace dfb1cbec131e98d9 ]--- RIP: 0010:iptunnel_xmit_stats include/net/ip_tunnels.h:444 [inline] RIP: 0010:iptunnel_xmit+0x6e5/0x970 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 70 6f 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: 0000:ffff8880ae809878 EFLAGS: 00010a02 RAX: dffffc0000000000 RBX: ffff110135bc0cc0 RCX: 1ffffffff10dee0c RDX: 1fffe22026b7819b RSI: ffffffff8334ff3c RDI: ffff110135bc0cd8 RBP: ffff8880ae8098d8 R08: ffff8880978b0140 R09: ffffed1015d06be0 R10: ffffed1015d06bdf R11: ffff8880ae835efb R12: 00000000000000fc R13: ffff8880a7ef6840 R14: ffff88806e6f6e14 R15: ffff8880a0e0bac0 FS: 00000000023e2940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffde2026b7819b CR3: 0000000069628000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400