F2FS-fs (loop0): Magic Mismatch, valid(0xf2f52010) - read(0x0)
F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
kasan: GPF could be caused by NULL-ptr deref or user memory access
F2FS-fs (loop0): Small segment_count (512 < 10 * 512)
F2FS-fs (loop0): Can't find valid F2FS filesystem in 2th superblock
general protection fault: 0000 [#1] PREEMPT SMP KASAN
F2FS-fs (loop0): Magic Mismatch, valid(0xf2f52010) - read(0x0)
CPU: 1 PID: 30286 Comm: syz-executor3 Not tainted 4.20.0-rc5+ #147
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:2006 [inline]
RIP: 0010:vb2_mmap+0x23c/0x6f0 drivers/media/common/videobuf2/videobuf2-core.c:2128
Code: 80 3c 10 00 0f 85 1b 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 fa
F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
RSP: 0018:ffff8881b1fe77d0 EFLAGS: 00010203
RAX: 0000000000000002 RBX: 0000000000000009 RCX: dffffc0000000000
RDX: dffffc0000000000 RSI: ffffffff85583130 RDI: 0000000000000014
RBP: ffff8881b1fe7820 R08: ffff888179d801c0 R09: ffffed1037ac4476
R10: ffffed1037ac4476 R11: ffff8881bd6223b7 R12: 0000000000000000
R13: 0000000000000001 R14: 0000000000030000 R15: ffff8881cb317268
F2FS-fs (loop0): Small segment_count (512 < 10 * 512)
FS:  00007f474756e700(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000707158 CR3: 00000001b1e74000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 vb2_fop_mmap+0x4b/0x70 drivers/media/common/videobuf2/videobuf2-v4l2.c:999
F2FS-fs (loop0): Can't find valid F2FS filesystem in 2th superblock
 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
cgroup: fork rejected by pids controller in /syz2
 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: 0033:0x457659
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:00007f474756dc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000457659
RDX: fffffffffffffffd RSI: 0000000000001000 RDI: 0000000020fff000
RBP: 000000000072bf00 R08: 0000000000000003 R09: 0000000000030000
R10: 0000000000000011 R11: 0000000000000246 R12: 00007f474756e6d4
R13: 00000000004c2c5d R14: 00000000004d47c8 R15: 00000000ffffffff
Modules linked in:
---[ end trace e33eef72cddbcb16 ]---
RIP: 0010:__find_plane_by_offset drivers/media/common/videobuf2/videobuf2-core.c:2006 [inline]
RIP: 0010:vb2_mmap+0x23c/0x6f0 drivers/media/common/videobuf2/videobuf2-core.c:2128
Code: 80 3c 10 00 0f 85 1b 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 fa
kobject: 'loop5' (0000000079aad9dd): kobject_uevent_env
kobject: 'loop0' (00000000fed098ac): kobject_uevent_env
kobject: 'loop5' (0000000079aad9dd): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop0' (00000000fed098ac): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'rx-0' (0000000019901eb1): kobject_cleanup, parent 00000000399ad6cd
kobject: 'loop0' (00000000fed098ac): kobject_uevent_env
kobject: 'rx-0' (0000000019901eb1): auto cleanup 'remove' event
kobject: 'rx-0' (0000000019901eb1): kobject_uevent_env
kobject: 'loop0' (00000000fed098ac): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'rx-0' (0000000019901eb1): fill_kobj_path: path = '/devices/virtual/net/ppp0/queues/rx-0'
RSP: 0018:ffff8881b1fe77d0 EFLAGS: 00010203
F2FS-fs (loop0): Magic Mismatch, valid(0xf2f52010) - read(0x0)
kobject: 'rx-0' (0000000019901eb1): auto cleanup kobject_del
F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
kobject: 'rx-0' (0000000019901eb1): calling ktype release
RAX: 0000000000000002 RBX: 0000000000000009 RCX: dffffc0000000000
kobject: 'rx-0': free name
kobject: 'tx-0' (00000000a9530c0e): kobject_cleanup, parent 00000000399ad6cd
RDX: dffffc0000000000 RSI: ffffffff85583130 RDI: 0000000000000014
F2FS-fs (loop0): Small segment_count (512 < 10 * 512)
kobject: 'tx-0' (00000000a9530c0e): auto cleanup 'remove' event
RBP: ffff8881b1fe7820 R08: ffff888179d801c0 R09: ffffed1037ac4476
kobject: 'tx-0' (00000000a9530c0e): kobject_uevent_env
F2FS-fs (loop0): Can't find valid F2FS filesystem in 2th superblock
kobject: 'tx-0' (00000000a9530c0e): fill_kobj_path: path = '/devices/virtual/net/ppp0/queues/tx-0'
R10: ffffed1037ac4476 R11: ffff8881bd6223b7 R12: 0000000000000000
kobject: 'tx-0' (00000000a9530c0e): auto cleanup kobject_del
F2FS-fs (loop0): Magic Mismatch, valid(0xf2f52010) - read(0x0)
kobject: 'tx-0' (00000000a9530c0e): calling ktype release
R13: 0000000000000001 R14: 0000000000030000 R15: ffff8881cb317268
kobject: 'tx-0': free name
FS:  00007f474756e700(0000) GS:ffff8881dae00000(0000) knlGS:0000000000000000
F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kobject: 'queues' (00000000399ad6cd): kobject_cleanup, parent           (null)
kobject: 'loop5' (0000000079aad9dd): kobject_uevent_env
kobject: 'queues' (00000000399ad6cd): calling ktype release
CR2: 0000001b30721000 CR3: 00000001b1e74000 CR4: 00000000001406f0
kobject: 'queues' (00000000399ad6cd): kset_release
F2FS-fs (loop0): Small segment_count (512 < 10 * 512)
kobject: 'loop5' (0000000079aad9dd): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'queues': free name
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
F2FS-fs (loop0): Can't find valid F2FS filesystem in 2th superblock
kobject: 'ppp0' (000000004b31f2d9): kobject_uevent_env
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
kobject: 'ppp0' (000000004b31f2d9): fill_kobj_path: path = '/devices/virtual/net/ppp0'