audit: type=1800 audit(1538849326.671:93): pid=15863 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed comm="syz-executor1" name="file0" dev="loop1" ino=10 res=0
attempt to access beyond end of device
loop1: rw=1, want=130, limit=112
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
kobject: 'loop4' (000000000b7f339b): fill_kobj_path: path = '/devices/virtual/block/loop4'
CPU: 1 PID: 15877 Comm: syz-executor3 Not tainted 4.19.0-rc6-next-20181005+ #88
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:do_fault mm/memory.c:3524 [inline]
RIP: 0010:handle_pte_fault mm/memory.c:3762 [inline]
RIP: 0010:__handle_mm_fault+0x2d72/0x55c0 mm/memory.c:3886
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 87 20 00 00 49 8b 9c 24 b0 fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 57 20 00 00 48 8b 1b 31 ff 48 83 e3 9f 48 89 de
RSP: 0018:ffff8801c1dd7480 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff8160f791
kobject: 'loop0' (00000000514c4dae): kobject_uevent_env
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8801c1dd75b8
RBP: ffff8801c1dd7730 R08: ffffed0039ce1c43 R09: ffffed0039ce1c42
R10: ffffed0039ce1c42 R11: ffff8801ce70e213 R12: ffff8801c1dd7708
R13: ffff8801cd1a6818 R14: ffff8801bcf26b20 R15: 0000000000000067
FS:  00007fddc37ca700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kobject: 'loop0' (00000000514c4dae): fill_kobj_path: path = '/devices/virtual/block/loop0'
CR2: 0000000000930004 CR3: 00000001ba2f1000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
Buffer I/O error on dev loop1, logical block 129, lost async page write
attempt to access beyond end of device
loop1: rw=1, want=131, limit=112
 handle_mm_fault+0x54f/0xc70 mm/memory.c:3923
Buffer I/O error on dev loop1, logical block 130, lost async page write
 faultin_page mm/gup.c:518 [inline]
 __get_user_pages+0x806/0x1b30 mm/gup.c:718
attempt to access beyond end of device
loop1: rw=1, want=132, limit=112
 populate_vma_page_range+0x2db/0x3d0 mm/gup.c:1222
Buffer I/O error on dev loop1, logical block 131, lost async page write
 __mm_populate+0x286/0x4d0 mm/gup.c:1270
attempt to access beyond end of device
 mm_populate include/linux/mm.h:2311 [inline]
 vm_mmap_pgoff+0x27f/0x2c0 mm/util.c:362
loop1: rw=1, want=133, limit=112
 ksys_mmap_pgoff+0x4da/0x660 mm/mmap.c:1606
Buffer I/O error on dev loop1, logical block 132, lost async page write
 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:100 [inline]
 __se_sys_mmap arch/x86/kernel/sys_x86_64.c:91 [inline]
 __x64_sys_mmap+0xe9/0x1b0 arch/x86/kernel/sys_x86_64.c:91
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
attempt to access beyond end of device
loop1: rw=1, want=142, limit=112
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
Buffer I/O error on dev loop1, logical block 141, lost async page write
RIP: 0033:0x457579
Code: 1d b4 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 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fddc37c9c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000457579
RDX: 0000000000000001 RSI: 0000000000001000 RDI: 0000000020637000
RBP: 000000000072bf00 R08: 0000000000000004 R09: 0000000100000000
R10: 0000000000002012 R11: 0000000000000246 R12: 00007fddc37ca6d4
attempt to access beyond end of device
R13: 00000000004c285b R14: 00000000004d3c00 R15: 00000000ffffffff
Modules linked in:
---[ end trace 6b58138312b41011 ]---
loop1: rw=1, want=143, limit=112
RIP: 0010:do_fault mm/memory.c:3524 [inline]
RIP: 0010:handle_pte_fault mm/memory.c:3762 [inline]
RIP: 0010:__handle_mm_fault+0x2d72/0x55c0 mm/memory.c:3886
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 87 20 00 00 49 8b 9c 24 b0 fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 57 20 00 00 48 8b 1b 31 ff 48 83 e3 9f 48 89 de
RSP: 0018:ffff8801c1dd7480 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff8160f791
Buffer I/O error on dev loop1, logical block 142, lost async page write
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8801c1dd75b8
RBP: ffff8801c1dd7730 R08: ffffed0039ce1c43 R09: ffffed0039ce1c42
R10: ffffed0039ce1c42 R11: ffff8801ce70e213 R12: ffff8801c1dd7708
R13: ffff8801cd1a6818 R14: ffff8801bcf26b20 R15: 0000000000000067
FS:  00007fddc37ca700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
attempt to access beyond end of device
CR2: 0000000000930004 CR3: 00000001ba2f1000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
loop1: rw=1, want=144, limit=112
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400