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 Modules linked in: CPU: 1 PID: 4911 Comm: syz-executor.4 Not tainted 4.9.194+ #0 task: 00000000be416c8d task.stack: 000000009ab4f3e9 RIP: 0010:[] [<00000000dbeaf4e5>] perf_event_count kernel/events/core.c:3583 [inline] RIP: 0010:[] [<00000000dbeaf4e5>] perf_output_read_group kernel/events/core.c:5742 [inline] RIP: 0010:[] [<00000000dbeaf4e5>] perf_output_read+0x63e/0x12e0 kernel/events/core.c:5779 RSP: 0018:ffff8801c69c70f8 EFLAGS: 00010207 RAX: 000000000000001b RBX: 0000000000000006 RCX: ffffc9000db62000 RDX: 0000000000040000 RSI: ffffffff813c5a60 RDI: 00000000000000de RBP: ffff8801c69c7270 R08: 1ffff1003915a79d R09: ffffed003915a79f R10: ffffed003915a79e R11: ffff8801c8ad3cf7 R12: ffff8801c73dfa48 R13: ffff8801c69c7408 R14: dffffc0000000000 R15: ffff8801c73df9d0 FS: 00007f4a17946700(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020fdc000 CR3: 00000001c8e60000 CR4: 00000000001606b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffff8801c69c7140 ffff8801c69c7410 ffffed0038d38e82 0000000000000010 0000000000000004 0000000000000010 ffffed0038d38e85 1ffff10038d38e2d ffff8801d2f499a0 ffff8801c69c7428 ffff8801c69c7420 ffff8801c69c71d8 Call Trace: [<0000000054985a09>] perf_output_sample+0x1142/0x17e0 kernel/events/core.c:5821 [<000000004d9f51ee>] __perf_event_output kernel/events/core.c:6093 [inline] [<000000004d9f51ee>] perf_event_output_forward+0x129/0x240 kernel/events/core.c:6106 [<00000000d5d0af22>] __perf_event_overflow+0x121/0x330 kernel/events/core.c:7208 [<00000000b9327078>] perf_swevent_overflow+0x17c/0x210 kernel/events/core.c:7284 [<00000000c172e79c>] perf_swevent_event+0x1ac/0x280 kernel/events/core.c:7317 [<00000000ddf2fffa>] do_perf_sw_event kernel/events/core.c:7425 [inline] [<00000000ddf2fffa>] ___perf_sw_event+0x299/0x4c0 kernel/events/core.c:7456 [<000000008a043558>] __perf_sw_event+0x47/0x90 kernel/events/core.c:7468 [<000000008d824a24>] perf_sw_event include/linux/perf_event.h:1045 [inline] [<000000008d824a24>] __do_page_fault+0x6cd/0xa60 arch/x86/mm/fault.c:1442 [<0000000086a00118>] do_page_fault+0x28/0x30 arch/x86/mm/fault.c:1464 [<0000000087fdb905>] page_fault+0x25/0x30 arch/x86/entry/entry_64.S:956 [<00000000cb8ca6fe>] skb_do_copy_data_nocache include/net/sock.h:1805 [inline] [<00000000cb8ca6fe>] skb_copy_to_page_nocache include/net/sock.h:1831 [inline] [<00000000cb8ca6fe>] tcp_sendmsg+0x998/0x2f90 net/ipv4/tcp.c:1289 [<00000000ad58b8c4>] inet_sendmsg+0x202/0x4d0 net/ipv4/af_inet.c:766 [<0000000034537b64>] sock_sendmsg_nosec net/socket.c:649 [inline] [<0000000034537b64>] sock_sendmsg+0xbe/0x110 net/socket.c:659 [<000000002669c812>] SYSC_sendto net/socket.c:1684 [inline] [<000000002669c812>] SyS_sendto+0x201/0x340 net/socket.c:1652 [<000000002e8e5c06>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288 [<00000000da4a034b>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb Code: 74 08 3c 03 0f 8e 55 0a 00 00 41 83 bf 88 00 00 00 01 0f 84 09 07 00 00 e8 a0 cc f5 ff 48 8d bb d8 00 00 00 48 89 f8 48 c1 e8 03 <42> 80 3c 30 00 0f 85 15 0a 00 00 48 8b 9b d8 00 00 00 48 85 db RIP [<00000000dbeaf4e5>] perf_event_count kernel/events/core.c:3583 [inline] RIP [<00000000dbeaf4e5>] perf_output_read_group kernel/events/core.c:5742 [inline] RIP [<00000000dbeaf4e5>] perf_output_read+0x63e/0x12e0 kernel/events/core.c:5779 RSP ---[ end trace 02499ddeca318403 ]---