kobject: 'loop4' (0000000049b9afcc): kobject_uevent_env
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
kobject: 'loop4' (0000000049b9afcc): fill_kobj_path: path = '/devices/virtual/block/loop4'
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
CPU: 0 PID: 9532 Comm: syz-executor2 Not tainted 4.19.0-rc5+ #122
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0033:0x457579
RIP: 0010:__rb_erase_augmented include/linux/rbtree_augmented.h:168 [inline]
RIP: 0010:rb_erase+0x306/0x3710 lib/rbtree.c:459
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
Code: c7 81 28 01 00 00 f2 f2 f2 f2 c7 81 2c 01 00 00 00 f2 f2 f2 48 89 f9 65 48 8b 1c 25 28 00 00 00 48 89 5d d0 31 db 48 c1 e9 03 <42> 80 3c 01 00 0f 85 41 1c 00 00 4c 8d 48 10 4c 8b 78 08 48 b9 00
RSP: 002b:00007f559863bc78 EFLAGS: 00000246
RSP: 0018:ffff8801947a6918 EFLAGS: 00010202
 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f559863bc90 RCX: 0000000000457579
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 00000000205f5000 RDI: 0000000000000003
RDX: 1ffff100328f4d2b RSI: ffffffff8afbc8a0 RDI: 0000000000000008
RBP: ffff8801947a7320 R08: dffffc0000000000 R09: fffffbfff12d6a48
RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000
R10: fffffbfff12d6a48 R11: ffffffff896b5243 R12: ffff8801c6ace930
R13: dffffc0000000000 R14: ffff8801947a72f8 R15: ffff8801947a7438
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f559863c6d4
FS:  00007f95ade01700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000
R13: 00000000004c3843 R14: 00000000004d5658 R15: 0000000000000004
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000007096b4 CR3: 00000001d3286000 CR4: 00000000001406f0
Call Trace:
 integrity_inode_free+0x12f/0x320 security/integrity/iint.c:150
 security_inode_free+0x19/0x90 security/security.c:453
 __destroy_inode+0x328/0x820 fs/inode.c:238
 destroy_inode+0xda/0x200 fs/inode.c:265
 evict+0x5e0/0x980 fs/inode.c:575
 iput_final fs/inode.c:1547 [inline]
 iput+0x679/0xa90 fs/inode.c:1573
 swap_inode_boot_loader fs/ext4/ioctl.c:188 [inline]
 ext4_ioctl+0x236f/0x4210 fs/ext4/ioctl.c:865
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:501 [inline]
 do_vfs_ioctl+0x1de/0x1720 fs/ioctl.c:685
 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:702
 __do_sys_ioctl fs/ioctl.c:709 [inline]
 __se_sys_ioctl fs/ioctl.c:707 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:707
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
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:00007f95ade00c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 0000000000457579
RDX: 0000000000000000 RSI: 0000000000006611 RDI: 0000000000000003
RBP: 000000000072c0e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f95ade016d4
R13: 00000000004bf626 R14: 00000000004cf4c0 R15: 00000000ffffffff
Modules linked in:
---[ end trace ad8598642e3b1976 ]---
RIP: 0010:__rb_erase_augmented include/linux/rbtree_augmented.h:168 [inline]
RIP: 0010:rb_erase+0x306/0x3710 lib/rbtree.c:459
Code: c7 81 28 01 00 00 f2 f2 f2 f2 c7 81 2c 01 00 00 00 f2 f2 f2 48 89 f9 65 48 8b 1c 25 28 00 00 00 48 89 5d d0 31 db 48 c1 e9 03 <42> 80 3c 01 00 0f 85 41 1c 00 00 4c 8d 48 10 4c 8b 78 08 48 b9 00
RSP: 0018:ffff8801947a6918 EFLAGS: 00010202
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 1ffff100328f4d2b RSI: ffffffff8afbc8a0 RDI: 0000000000000008
RBP: ffff8801947a7320 R08: dffffc0000000000 R09: fffffbfff12d6a48
R10: fffffbfff12d6a48 R11: ffffffff896b5243 R12: ffff8801c6ace930
R13: dffffc0000000000 R14: ffff8801947a72f8 R15: ffff8801947a7438
FS:  00007f95ade01700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000007096b4 CR3: 00000001d3286000 CR4: 00000000001406f0