ksys_mmap_pgoff+0x4da/0x660 mm/mmap.c:1609
kobject: 'loop5' (00000000a77160c9): kobject_uevent_env
kobject: 'loop5' (00000000a77160c9): fill_kobj_path: path = '/devices/virtual/block/loop5'
 __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
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 29490 Comm: syz-executor4 Not tainted 4.20.0-rc7+ #382
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__find_plane_by_offset drivers/media/common/videobuf2/videobuf2-core.c:2032 [inline]
RIP: 0010:vb2_mmap+0x23c/0x6f0 drivers/media/common/videobuf2/videobuf2-core.c:2154
Code: 80 3c 10 00 0f 85 21 04 00 00 48 b9 00 00 00 00 00 fc ff df 48 8b 45 b8 48 8b 00 48 8d 78 14 48 89 45 d0 48 89 f8 48 c1 e8 03 <0f> b6 14 08 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 00
RSP: 0018:ffff8881851877d0 EFLAGS: 00010203
RAX: 0000000000000002 RBX: 0000000000000009 RCX: dffffc0000000000
RDX: dffffc0000000000 RSI: ffffffff855524c0 RDI: 0000000000000014
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RBP: ffff888185187820 R08: ffff8881d8622680 R09: ffffed103afbba0e
RIP: 0033:0x457669
R10: ffffed103afbba0e R11: ffff8881d7ddd077 R12: 0000000000000000
R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881cbaa7268
Code: fd b3 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 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
FS:  00007f986b0c5700(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000
RSP: 002b:00007f3a4617fc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
RAX: ffffffffffffffda RBX: 00007f3a4617fc90 RCX: 0000000000457669
CR2: 0000000000708158 CR3: 0000000187c56000 CR4: 00000000001406e0
RDX: fffffffffffffffd RSI: 0000000000002000 RDI: 0000000020ffe000
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
RBP: 000000000072bf00 R08: 0000000000000003 R09: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
R10: 0000000000000011 R11: 0000000000000246 R12: 00007f3a461806d4
Call Trace:
R13: 00000000004c2d75 R14: 00000000004d50e8 R15: 0000000000000004
kobject: 'loop1' (0000000031b9429c): kobject_uevent_env
 vb2_fop_mmap+0x4b/0x70 drivers/media/common/videobuf2/videobuf2-v4l2.c:1004
 v4l2_mmap+0x153/0x200 drivers/media/v4l2-core/v4l2-dev.c:401
 call_mmap include/linux/fs.h:1862 [inline]
 mmap_region+0xe85/0x1cd0 mm/mmap.c:1786
kobject: 'loop1' (0000000031b9429c): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop2' (000000002188e7bd): kobject_uevent_env
kobject: 'loop2' (000000002188e7bd): fill_kobj_path: path = '/devices/virtual/block/loop2'
 do_mmap+0xa22/0x1230 mm/mmap.c:1559
 do_mmap_pgoff include/linux/mm.h:2328 [inline]
 vm_mmap_pgoff+0x213/0x2c0 mm/util.c:350
 ksys_mmap_pgoff+0x4da/0x660 mm/mmap.c:1609
 __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
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457669
Code: fd b3 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 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f986b0c4c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000457669
RDX: fffffffffffffffd RSI: 0000000000002000 RDI: 0000000020ffe000
RBP: 000000000072bf00 R08: 0000000000000003 R09: 0000000000000000
R10: 0000000000000011 R11: 0000000000000246 R12: 00007f986b0c56d4
R13: 00000000004c2d75 R14: 00000000004d50e8 R15: 00000000ffffffff
Modules linked in:
---[ end trace 329e23b85bb06567 ]---
kobject: 'loop0' (0000000010581891): kobject_uevent_env
kobject: 'syz_tun' (00000000a00da922): kobject_cleanup, parent           (null)
kobject: 'loop0' (0000000010581891): fill_kobj_path: path = '/devices/virtual/block/loop0'
RIP: 0010:__find_plane_by_offset drivers/media/common/videobuf2/videobuf2-core.c:2032 [inline]
RIP: 0010:vb2_mmap+0x23c/0x6f0 drivers/media/common/videobuf2/videobuf2-core.c:2154
kobject: 'syz_tun' (00000000a00da922): calling ktype release
kobject: 'syz_tun': free name
Code: 80 3c 10 00 0f 85 21 04 00 00 48 b9 00 00 00 00 00 fc ff df 48 8b 45 b8 48 8b 00 48 8d 78 14 48 89 45 d0 48 89 f8 48 c1 e8 03 <0f> b6 14 08 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 00
RSP: 0018:ffff8881851877d0 EFLAGS: 00010203
RAX: 0000000000000002 RBX: 0000000000000009 RCX: dffffc0000000000
RDX: dffffc0000000000 RSI: ffffffff855524c0 RDI: 0000000000000014
RBP: ffff888185187820 R08: ffff8881d8622680 R09: ffffed103afbba0e
R10: ffffed103afbba0e R11: ffff8881d7ddd077 R12: 0000000000000000
R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881cbaa7268
FS:  00007f986b0c5700(0000) GS:ffff8881dae00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe29f737000 CR3: 0000000187c56000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400