EXT4-fs error (device loop0): ext4_ext_check_inode:501: inode #16: comm syz.0.87: pblk 0 bad header/extent: too large eh_max - magic f30a, entries 1, max 32516(4), depth 0(0)
EXT4-fs error (device loop0): ext4_orphan_get:1411: comm syz.0.87: couldn't read orphan inode 16 (err -117)
ext4 filesystem being mounted at /70/file1 supports timestamps until 2038-01-19 (0x7fffffff)
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.0.87/4471 is trying to acquire lock:
ffff88805f155c30 (&ei->i_data_sem/1){+.+.}-{3:3}, at: swap_inode_boot_loader+0x571/0x10e0 fs/ext4/ioctl.c:176
but task is already holding lock:
ffff88805f154840 (&ei->i_data_sem/2){++++}-{3:3}, at: ext4_double_down_write_data_sem+0x28/0x40 fs/ext4/move_extent.c:-1
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #3 (&ei->i_data_sem/2){++++}-{3:3}:
down_read+0x44/0x2e0 kernel/locking/rwsem.c:1498
ext4_map_blocks+0x350/0x1a50 fs/ext4/inode.c:600
ext4_getblk+0x176/0x670 fs/ext4/inode.c:872
ext4_bread+0x26/0x180 fs/ext4/inode.c:925
ext4_quota_write+0x237/0x580 fs/ext4/super.c:6623
write_blk fs/quota/quota_tree.c:64 [inline]
get_free_dqblk+0x38a/0x7a0 fs/quota/quota_tree.c:125
do_insert_tree+0x21b/0x19c0 fs/quota/quota_tree.c:335
do_insert_tree+0x5c4/0x19c0 fs/quota/quota_tree.c:366
do_insert_tree+0x5c4/0x19c0 fs/quota/quota_tree.c:366
do_insert_tree+0x5c4/0x19c0 fs/quota/quota_tree.c:366
dq_insert_tree fs/quota/quota_tree.c:392 [inline]
qtree_write_dquot+0x354/0x4a0 fs/quota/quota_tree.c:411
v2_write_dquot+0x108/0x190 fs/quota/quota_v2.c:358
dquot_acquire+0x2d5/0x520 fs/quota/dquot.c:497
ext4_acquire_dquot+0x2e3/0x4a0 fs/ext4/super.c:6232
dqget+0x713/0xbb0 fs/quota/dquot.c:1010
__dquot_initialize+0x3a9/0xd00 fs/quota/dquot.c:1539
ext4_create+0x92/0x470 fs/ext4/namei.c:2876
lookup_open fs/namei.c:3470 [inline]
open_last_lookups fs/namei.c:3540 [inline]
path_openat+0x120a/0x2fb0 fs/namei.c:3747
do_filp_open+0x1df/0x400 fs/namei.c:3777
do_sys_openat2+0x14b/0x500 fs/open.c:1255
do_sys_open fs/open.c:1271 [inline]
__do_sys_openat fs/open.c:1287 [inline]
__se_sys_openat fs/open.c:1282 [inline]
__x64_sys_openat+0x135/0x160 fs/open.c:1282
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
-> #2 (&s->s_dquot.dqio_sem){++++}-{3:3}:
down_read+0x44/0x2e0 kernel/locking/rwsem.c:1498
v2_read_dquot+0x4a/0x110 fs/quota/quota_v2.c:332
dquot_acquire+0x152/0x520 fs/quota/dquot.c:488
ext4_acquire_dquot+0x2e3/0x4a0 fs/ext4/super.c:6232
dqget+0x713/0xbb0 fs/quota/dquot.c:1010
__dquot_initialize+0x3a9/0xd00 fs/quota/dquot.c:1539
ext4_process_orphan+0x4c/0x2e0 fs/ext4/orphan.c:327
ext4_orphan_cleanup+0xad8/0x1320 fs/ext4/orphan.c:472
ext4_fill_super+0x8c65/0x93f0 fs/ext4/super.c:5006
mount_bdev+0x28a/0x3c0 fs/super.c:1400
legacy_get_tree+0xe6/0x180 fs/fs_context.c:611
vfs_get_tree+0x88/0x270 fs/super.c:1530
do_new_mount+0x247/0xa40 fs/namespace.c:3034
do_mount fs/namespace.c:3377 [inline]
__do_sys_mount fs/namespace.c:3585 [inline]
__se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3562
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
-> #1 (&dquot->dq_lock){+.+.}-{3:3}:
__mutex_lock_common+0x1e5/0x2400 kernel/locking/mutex.c:596
__mutex_lock kernel/locking/mutex.c:729 [inline]
mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
dquot_commit+0x5a/0x410 fs/quota/dquot.c:532
ext4_write_dquot+0x1f0/0x360 fs/ext4/super.c:6212
mark_dquot_dirty fs/quota/dquot.c:397 [inline]
mark_all_dquot_dirty+0xf9/0x400 fs/quota/dquot.c:437
__dquot_alloc_space+0x5cb/0xe10 fs/quota/dquot.c:1774
dquot_alloc_space_nodirty include/linux/quotaops.h:290 [inline]
dquot_alloc_space+0x1e/0x50 include/linux/quotaops.h:303
swap_inode_boot_loader+0xe69/0x10e0 fs/ext4/ioctl.c:243
__ext4_ioctl fs/ext4/ioctl.c:1059 [inline]
ext4_ioctl+0x1ad2/0x3860 fs/ext4/ioctl.c:1285
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:874 [inline]
__se_sys_ioctl+0xfa/0x170 fs/ioctl.c:860
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
-> #0 (&ei->i_data_sem/1){+.+.}-{3:3}:
check_prev_add kernel/locking/lockdep.c:3053 [inline]
check_prevs_add kernel/locking/lockdep.c:3172 [inline]
validate_chain kernel/locking/lockdep.c:3788 [inline]
__lock_acquire+0x2c66/0x7b50 kernel/locking/lockdep.c:5012
lock_acquire+0x19e/0x400 kernel/locking/lockdep.c:5623
down_write_nested+0x3b/0x60 kernel/locking/rwsem.c:1667
swap_inode_boot_loader+0x571/0x10e0 fs/ext4/ioctl.c:176
__ext4_ioctl fs/ext4/ioctl.c:1059 [inline]
ext4_ioctl+0x1ad2/0x3860 fs/ext4/ioctl.c:1285
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:874 [inline]
__se_sys_ioctl+0xfa/0x170 fs/ioctl.c:860
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
other info that might help us debug this:
Chain exists of:
&ei->i_data_sem/1 --> &s->s_dquot.dqio_sem --> &ei->i_data_sem/2
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&ei->i_data_sem/2);
lock(&s->s_dquot.dqio_sem);
lock(&ei->i_data_sem/2);
lock(&ei->i_data_sem/1);
*** DEADLOCK ***
5 locks held by syz.0.87/4471:
#0: ffff888023e62460 (sb_writers#5){.+.+}-{0:0}, at: mnt_want_write_file+0x5c/0x200 fs/namespace.c:430
#1: ffff88805f1549b8 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline]
#1: ffff88805f1549b8 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: lock_two_nondirectories+0xf7/0x150 fs/inode.c:1147
#2: ffff88805f155da8 (&sb->s_type->i_mutex_key#9/4){+.+.}-{3:3}, at: swap_inode_boot_loader+0x70/0x10e0 fs/ext4/ioctl.c:135
#3: ffff88805f154b58 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#3: ffff88805f154b58 (mapping.invalidate_lock){++++}-{3:3}, at: swap_inode_boot_loader+0x39f/0x10e0 fs/ext4/ioctl.c:152
#4: ffff88805f154840 (&ei->i_data_sem/2){++++}-{3:3}, at: ext4_double_down_write_data_sem+0x28/0x40 fs/ext4/move_extent.c:-1
stack backtrace:
CPU: 1 PID: 4471 Comm: syz.0.87 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
<TASK>
dump_stack_lvl+0x188/0x250 lib/dump_stack.c:106
check_noncircular+0x296/0x330 kernel/locking/lockdep.c:2133
check_prev_add kernel/locking/lockdep.c:3053 [inline]
check_prevs_add kernel/locking/lockdep.c:3172 [inline]
validate_chain kernel/locking/lockdep.c:3788 [inline]
__lock_acquire+0x2c66/0x7b50 kernel/locking/lockdep.c:5012
lock_acquire+0x19e/0x400 kernel/locking/lockdep.c:5623
down_write_nested+0x3b/0x60 kernel/locking/rwsem.c:1667
swap_inode_boot_loader+0x571/0x10e0 fs/ext4/ioctl.c:176
__ext4_ioctl fs/ext4/ioctl.c:1059 [inline]
ext4_ioctl+0x1ad2/0x3860 fs/ext4/ioctl.c:1285
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:874 [inline]
__se_sys_ioctl+0xfa/0x170 fs/ioctl.c:860
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f4a2a3f9e59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fffe04f07b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f4a2a672fa0 RCX: 00007f4a2a3f9e59
RDX: 0000000000000000 RSI: 0000000000006611 RDI: 0000000000000004
RBP: 00007f4a2a48fe6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4a2a672fac R14: 00007f4a2a672fa0 R15: 00007f4a2a672fa0
</TASK>