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: 19407 Comm: syz-executor.1 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__list_del_entry_valid+0x81/0xf0 lib/list_debug.c:51 Code: 0f 84 30 52 85 04 48 b8 00 02 00 00 00 00 ad de 49 39 c4 0f 84 31 52 85 04 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 75 51 49 8b 14 24 48 39 ea 0f 85 e8 51 85 04 49 8d 7d RSP: 0018:ffff88804c097980 EFLAGS: 00010046 RAX: dffffc0000000000 RBX: ffff888097bf7640 RCX: ffffffff814bdebb RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888097bf7b10 RBP: ffff888097bf7b08 R08: 0000000000000001 R09: ffffed1012b300b5 R10: ffff8880959805ab R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffff888097bf7b08 R15: ffff888097bf7b10 FS: 00007fcac67ce700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe7b2c8c48 CR3: 000000009904a000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_del_entry include/linux/list.h:117 [inline] list_del_rcu include/linux/rculist.h:130 [inline] xdp_del_sk_umem+0x72/0x1a0 net/xdp/xdp_umem.c:42 xsk_release+0x128/0x350 net/xdp/xsk.c:344 __sock_release+0xcd/0x2a0 net/socket.c:599 sock_close+0x15/0x20 net/socket.c:1214 __fput+0x2ce/0x890 fs/file_table.c:278 task_work_run+0x148/0x1c0 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0xbf3/0x2be0 kernel/exit.c:870 do_group_exit+0x125/0x310 kernel/exit.c:967 get_signal+0x3f2/0x1f70 kernel/signal.c:2589 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fcac7e59059 Code: Bad RIP value. RSP: 002b:00007fcac67ce218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007fcac7f6bf68 RCX: 00007fcac7e59059 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fcac7f6bf68 RBP: 00007fcac7f6bf60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fcac7f6bf6c R13: 00007ffee6aca1df R14: 00007fcac67ce300 R15: 0000000000022000 Modules linked in: ---[ end trace 6092321444644193 ]--- RIP: 0010:__list_del_entry_valid+0x81/0xf0 lib/list_debug.c:51 Code: 0f 84 30 52 85 04 48 b8 00 02 00 00 00 00 ad de 49 39 c4 0f 84 31 52 85 04 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 75 51 49 8b 14 24 48 39 ea 0f 85 e8 51 85 04 49 8d 7d RSP: 0018:ffff88804c097980 EFLAGS: 00010046 RAX: dffffc0000000000 RBX: ffff888097bf7640 RCX: ffffffff814bdebb RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888097bf7b10 RBP: ffff888097bf7b08 R08: 0000000000000001 R09: ffffed1012b300b5 R10: ffff8880959805ab R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffff888097bf7b08 R15: ffff888097bf7b10 FS: 00007fcac67ce700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcac7e5902f CR3: 000000009904a000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 0f 84 30 52 85 04 je 0x4855236 6: 48 b8 00 02 00 00 00 movabs $0xdead000000000200,%rax d: 00 ad de 10: 49 39 c4 cmp %rax,%r12 13: 0f 84 31 52 85 04 je 0x485524a 19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 20: fc ff df 23: 4c 89 e2 mov %r12,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 75 51 jne 0x81 30: 49 8b 14 24 mov (%r12),%rdx 34: 48 39 ea cmp %rbp,%rdx 37: 0f 85 e8 51 85 04 jne 0x4855225 3d: 49 rex.WB 3e: 8d .byte 0x8d 3f: 7d .byte 0x7d