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: 2430 Comm: syz-executor094 Not tainted 4.9.181+ #9
task: 00000000713a9c31 task.stack: 00000000a2241254
RIP: 0010:[<ffffffff813c423e>]  [<00000000702aea29>] perf_event_count kernel/events/core.c:3583 [inline]
RIP: 0010:[<ffffffff813c423e>]  [<00000000702aea29>] perf_output_read_group kernel/events/core.c:5742 [inline]
RIP: 0010:[<ffffffff813c423e>]  [<00000000702aea29>] perf_output_read+0x63e/0x12e0 kernel/events/core.c:5779
RSP: 0018:ffff8801c807f038  EFLAGS: 00010202
RAX: 000000000000001c RBX: 0000000000000009 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff813c4230 RDI: 00000000000000e1
RBP: ffff8801c807f1b0 R08: 1ffff10039df69d5 R09: ffffed0039df69d7
R10: ffffed0039df69d6 R11: ffff8801cefb4eb7 R12: ffff8801c8698648
R13: ffff8801c807f348 R14: dffffc0000000000 R15: ffff8801c86985d0
FS:  00007fdb906b8700(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000203d313f CR3: 00000001c8634000 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffff8801c807f1e0 ffff8801c807f350 ffffed003900fe6a 0000000000000010
 0000000000000004 0000000000000010 ffffed003900fe6d 1ffff1003900fe15
 ffff8801c814c420 ffff8801c807f368 ffff8801c807f360 ffff8801c807f118
Call Trace:
 [<000000005189bc5a>] perf_output_sample+0x1142/0x17e0 kernel/events/core.c:5821
 [<00000000c18d2afa>] __perf_event_output kernel/events/core.c:6093 [inline]
 [<00000000c18d2afa>] perf_event_output_forward+0x129/0x240 kernel/events/core.c:6106
 [<0000000010a4226c>] __perf_event_overflow+0x121/0x330 kernel/events/core.c:7208
 [<00000000bef1eec9>] perf_swevent_overflow+0x17c/0x210 kernel/events/core.c:7284
 [<0000000017cdcb5f>] perf_swevent_event+0x1ac/0x280 kernel/events/core.c:7317
 [<000000002b6cfe0a>] do_perf_sw_event kernel/events/core.c:7425 [inline]
 [<000000002b6cfe0a>] ___perf_sw_event+0x299/0x4c0 kernel/events/core.c:7456
 [<00000000b7602aed>] __perf_sw_event+0x47/0x90 kernel/events/core.c:7468
 [<00000000d69a37f2>] perf_sw_event include/linux/perf_event.h:1045 [inline]
 [<00000000d69a37f2>] __do_page_fault+0x6cd/0xa60 arch/x86/mm/fault.c:1445
 [<00000000928b43ff>] do_page_fault+0x28/0x30 arch/x86/mm/fault.c:1467
 [<000000009270553f>] page_fault+0x25/0x30 arch/x86/entry/entry_64.S:953
 [<00000000c44a039b>] generic_perform_write+0x1b6/0x500 mm/filemap.c:2929
 [<00000000832319de>] __generic_file_write_iter+0x340/0x530 mm/filemap.c:3064
 [<00000000a25935fa>] ext4_file_write_iter+0x364/0xcd0 fs/ext4/file.c:165
 [<00000000195ee895>] new_sync_write fs/read_write.c:498 [inline]
 [<00000000195ee895>] __vfs_write+0x3c1/0x560 fs/read_write.c:511
 [<000000003ff08a09>] vfs_write+0x185/0x520 fs/read_write.c:559
 [<0000000030e3c37a>] SYSC_write fs/read_write.c:607 [inline]
 [<0000000030e3c37a>] SyS_write+0x121/0x270 fs/read_write.c:599
 [<0000000052ea4950>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288
 [<00000000edc8d665>] 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  [<00000000702aea29>] perf_event_count kernel/events/core.c:3583 [inline]
RIP  [<00000000702aea29>] perf_output_read_group kernel/events/core.c:5742 [inline]
RIP  [<00000000702aea29>] perf_output_read+0x63e/0x12e0 kernel/events/core.c:5779
 RSP <ffff8801c807f038>
---[ end trace 244ed3c15ec53456 ]---