EXT4-fs (loop2): warning: mounting fs with errors, running e2fsck is recommended
================================================================================
UBSAN: Undefined behaviour in fs/quota/dquot.c:2336:36
index -1 is out of range for type 'inode *[3]'
CPU: 0 PID: 10940 Comm: syz-executor.2 Not tainted 5.4.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x86/0xca lib/dump_stack.c:113
 ubsan_epilogue+0xd/0x3a lib/ubsan.c:158
 __ubsan_handle_out_of_bounds+0x70/0x80 lib/ubsan.c:365
 vfs_cleanup_quota_inode+0x17e/0x1a0 fs/quota/dquot.c:2336
 dquot_resume+0x160/0x1c0 fs/quota/dquot.c:2465
 ext4_remount+0x1773/0x2350 fs/ext4/super.c:5497
 legacy_reconfigure+0x10b/0x1a0 fs/fs_context.c:670
 reconfigure_super+0x24e/0x830 fs/super.c:955
 do_remount fs/namespace.c:2551 [inline]
 do_mount+0x1330/0x1ac0 fs/namespace.c:3134
 ksys_mount+0xba/0xe0 fs/namespace.c:3352
 __do_sys_mount fs/namespace.c:3366 [inline]
 __se_sys_mount fs/namespace.c:3363 [inline]
 __x64_sys_mount+0xb9/0x150 fs/namespace.c:3363
 do_syscall_64+0x93/0x4e0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4608ca
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ad 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 8a 89 fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007f1f36c35a78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f1f36c35b10 RCX: 00000000004608ca
RDX: 0000000020000540 RSI: 0000000020000580 RDI: 0000000000000000
RBP: 00007f1f36c35ad0 R08: 00007f1f36c35b10 R09: 0000000020000540
R10: 0000000000240038 R11: 0000000000000246 R12: 0000000020000540
R13: 0000000020000580 R14: 0000000000000000 R15: 0000000020001ec0
================================================================================
================================================================================
UBSAN: Undefined behaviour in fs/quota/dquot.c:2343:14
index -1 is out of range for type 'inode *[3]'
CPU: 1 PID: 10940 Comm: syz-executor.2 Not tainted 5.4.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x86/0xca lib/dump_stack.c:113
 ubsan_epilogue+0xd/0x3a lib/ubsan.c:158
 __ubsan_handle_out_of_bounds+0x70/0x80 lib/ubsan.c:365
 vfs_cleanup_quota_inode+0x166/0x1a0 fs/quota/dquot.c:2343
 dquot_resume+0x160/0x1c0 fs/quota/dquot.c:2465
 ext4_remount+0x1773/0x2350 fs/ext4/super.c:5497
 legacy_reconfigure+0x10b/0x1a0 fs/fs_context.c:670
 reconfigure_super+0x24e/0x830 fs/super.c:955
 do_remount fs/namespace.c:2551 [inline]
 do_mount+0x1330/0x1ac0 fs/namespace.c:3134
 ksys_mount+0xba/0xe0 fs/namespace.c:3352
 __do_sys_mount fs/namespace.c:3366 [inline]
 __se_sys_mount fs/namespace.c:3363 [inline]
 __x64_sys_mount+0xb9/0x150 fs/namespace.c:3363
 do_syscall_64+0x93/0x4e0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4608ca
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ad 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 8a 89 fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007f1f36c35a78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f1f36c35b10 RCX: 00000000004608ca
RDX: 0000000020000540 RSI: 0000000020000580 RDI: 0000000000000000
RBP: 00007f1f36c35ad0 R08: 00007f1f36c35b10 R09: 0000000020000540
R10: 0000000000240038 R11: 0000000000000246 R12: 0000000020000540
R13: 0000000020000580 R14: 0000000000000000 R15: 0000000020001ec0
================================================================================
------------[ cut here ]------------
kernel BUG at fs/inode.c:1579!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 10940 Comm: syz-executor.2 Not tainted 5.4.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:iput+0x575/0x6e0 fs/inode.c:1579
Code: 3c 02 00 0f 85 e3 00 00 00 41 f6 45 53 40 0f 84 fc fe ff ff 48 89 df e8 39 f9 ff ff 48 8b 7d d0 e8 a0 7b 86 06 e9 4b fe ff ff <0f> 0b 48 c7 c7 a0 c5 6b 8a e8 9d 66 e6 01 0f 0b e9 3d fd ff ff 0f
RSP: 0018:ffff8880887079e0 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffffffff88951aa0 RCX: 1ffff1101486703f
RDX: 1ffffffff112a36e RSI: 0000000000000008 RDI: ffffffff88951aa0
RBP: ffff888088707a28 R08: 0000000000000006 R09: fffffbfff1a3eb41
R10: fffffbfff1a3eb40 R11: ffffffff8d1f5a07 R12: ffff8880a4338000
R13: ffffffff88951aa0 R14: ffff8880a43381f8 R15: ffff8880a4338170
FS:  00007f1f36c36700(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000074a918 CR3: 00000000abd0e000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 vfs_cleanup_quota_inode+0xbc/0x1a0 fs/quota/dquot.c:2344
 dquot_resume+0x160/0x1c0 fs/quota/dquot.c:2465
 ext4_remount+0x1773/0x2350 fs/ext4/super.c:5497
 legacy_reconfigure+0x10b/0x1a0 fs/fs_context.c:670
 reconfigure_super+0x24e/0x830 fs/super.c:955
 do_remount fs/namespace.c:2551 [inline]
 do_mount+0x1330/0x1ac0 fs/namespace.c:3134
 ksys_mount+0xba/0xe0 fs/namespace.c:3352
 __do_sys_mount fs/namespace.c:3366 [inline]
 __se_sys_mount fs/namespace.c:3363 [inline]
 __x64_sys_mount+0xb9/0x150 fs/namespace.c:3363
 do_syscall_64+0x93/0x4e0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4608ca
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ad 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 8a 89 fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007f1f36c35a78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f1f36c35b10 RCX: 00000000004608ca
RDX: 0000000020000540 RSI: 0000000020000580 RDI: 0000000000000000
RBP: 00007f1f36c35ad0 R08: 00007f1f36c35b10 R09: 0000000020000540
R10: 0000000000240038 R11: 0000000000000246 R12: 0000000020000540
R13: 0000000020000580 R14: 0000000000000000 R15: 0000000020001ec0
Modules linked in:
---[ end trace 8ace6691f0ac04af ]---
RIP: 0010:iput+0x575/0x6e0 fs/inode.c:1579
Code: 3c 02 00 0f 85 e3 00 00 00 41 f6 45 53 40 0f 84 fc fe ff ff 48 89 df e8 39 f9 ff ff 48 8b 7d d0 e8 a0 7b 86 06 e9 4b fe ff ff <0f> 0b 48 c7 c7 a0 c5 6b 8a e8 9d 66 e6 01 0f 0b e9 3d fd ff ff 0f
RSP: 0018:ffff8880887079e0 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffffffff88951aa0 RCX: 1ffff1101486703f
RDX: 1ffffffff112a36e RSI: 0000000000000008 RDI: ffffffff88951aa0
RBP: ffff888088707a28 R08: 0000000000000006 R09: fffffbfff1a3eb41
R10: fffffbfff1a3eb40 R11: ffffffff8d1f5a07 R12: ffff8880a4338000
R13: ffffffff88951aa0 R14: ffff8880a43381f8 R15: ffff8880a4338170
FS:  00007f1f36c36700(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1b55f7d000 CR3: 00000000abd0e000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400