audit: type=1800 audit(1540234859.399:30): pid=5249 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 sshd (5389) used greatest stack depth: 15976 bytes left 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: 5405 Comm: syz-executor045 Not tainted 4.19.0+ #74 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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:ffff8801ba536918 EFLAGS: 00010202 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 RDX: 1ffff100374a6d2b RSI: ffffffff8afbc860 RDI: 0000000000000008 RBP: ffff8801ba537320 R08: dffffc0000000000 R09: fffffbfff12d6990 R10: fffffbfff12d6990 R11: ffffffff896b4c83 R12: ffff8801c2c21270 R13: dffffc0000000000 R14: ffff8801ba5372f8 R15: ffff8801ba537438 FS: 00000000008cc880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000080 CR3: 00000001baf20000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 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: 0033:0x440009 Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffd7bbced38 EFLAGS: 00000213 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440009 RDX: 0000000000440009 RSI: 0000000000006611 RDI: 0000000000000003 RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401890 R13: 0000000000401920 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 34ef1fb4bba704d7 ]--- 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:ffff8801ba536918 EFLAGS: 00010202 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 RDX: 1ffff100374a6d2b RSI: ffffffff8afbc860 RDI: 0000000000000008 RBP: ffff8801ba537320 R08: dffffc0000000000 R09: fffffbfff12d6990 R10: fffffbfff12d6990 R11: ffffffff896b4c83 R12: ffff8801c2c21270 R13: dffffc0000000000 R14: ffff8801ba5372f8 R15: ffff8801ba537438 FS: 00000000008cc880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000080 CR3: 00000001baf20000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400