Extracting prog: 1m54.408001971s
Minimizing prog: 2m5.709257179s
Simplifying prog options: 0s
Extracting C: 1m1.63345552s
Simplifying C: 8m31.891230275s


extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getegid-syz_mount_image$ext4
detailed listing:
executing program 0:
getegid()
syz_mount_image$ext4(&(0x7f0000000100)='ext4\x00', &(0x7f0000000200)='./file1\x00', 0x2000005, &(0x7f0000003140), 0x1, 0x4fa, &(0x7f0000000cc0)="$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")

program crashed: possible deadlock in dquot_commit
single: successfully extracted reproducer
found reproducer with 2 syscalls
minimizing guilty program
testing program (duration=45.609231594s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getegid
detailed listing:
executing program 0:
getegid()

program did not crash
testing program (duration=45.609231594s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f0000000100)='ext4\x00', &(0x7f0000000200)='./file1\x00', 0x2000005, &(0x7f0000003140), 0x1, 0x4fa, &(0x7f0000000cc0)="$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")

program crashed: possible deadlock in dquot_commit
extracting C reproducer
testing compiled C program (duration=45.609231594s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4
program crashed: possible deadlock in dquot_commit
simplifying C reproducer
testing compiled C program (duration=45.609231594s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4
program crashed: possible deadlock in dquot_commit
testing compiled C program (duration=45.609231594s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4
program did not crash
testing compiled C program (duration=45.609231594s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4
program crashed: possible deadlock in dquot_commit
testing compiled C program (duration=45.609231594s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4
program crashed: possible deadlock in dquot_commit
testing compiled C program (duration=45.609231594s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4
program crashed: possible deadlock in dquot_commit
testing compiled C program (duration=45.609231594s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4
program did not crash
testing compiled C program (duration=45.609231594s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4
program crashed: possible deadlock in dquot_commit
testing compiled C program (duration=45.609231594s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4
program crashed: possible deadlock in dquot_commit
testing program (duration=45.609231594s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f0000000100)='ext4\x00', &(0x7f0000000200)='./file1\x00', 0x2000005, &(0x7f0000003140), 0x1, 0x4fa, &(0x7f0000000cc0)="$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")

program crashed: possible deadlock in dquot_commit
validation run: crashed=true
testing program (duration=45.609231594s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f0000000100)='ext4\x00', &(0x7f0000000200)='./file1\x00', 0x2000005, &(0x7f0000003140), 0x1, 0x4fa, &(0x7f0000000cc0)="$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")

program crashed: possible deadlock in dquot_commit
validation run: crashed=true
testing program (duration=45.609231594s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f0000000100)='ext4\x00', &(0x7f0000000200)='./file1\x00', 0x2000005, &(0x7f0000003140), 0x1, 0x4fa, &(0x7f0000000cc0)="$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")

program crashed: possible deadlock in dquot_commit
validation run: crashed=true
reproducing took 17m9.394256627s
repro crashed as (corrupted=false):
EXT4-fs error (device loop0): ext4_dirty_inode:6054: inode #3: comm syz.0.61: mark_inode_dirty error
EXT4-fs error (device loop0): ext4_do_update_inode:5218: inode #3: comm syz.0.61: corrupted inode contents
EXT4-fs error (device loop0): __ext4_ext_dirty:183: inode #3: comm syz.0.61: mark_inode_dirty error
EXT4-fs error (device loop0): ext4_acquire_dquot:6209: comm syz.0.61: Failed to acquire dquot type 0
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.0.61/4404 is trying to acquire lock:
ffff88806de540a8 (&dquot->dq_lock){+.+.}-{3:3}, at: dquot_commit+0x5a/0x410 fs/quota/dquot.c:507

but task is already holding lock:
ffff88806df3f020 (&ei->i_data_sem/2){++++}-{3:3}, at: ext4_truncate+0x96d/0x10d0 fs/ext4/inode.c:4251

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #2 (&ei->i_data_sem/2){++++}-{3:3}:
       down_read+0x44/0x2e0 kernel/locking/rwsem.c:1498
       ext4_map_blocks+0x32f/0x1b30 fs/ext4/inode.c:598
       ext4_getblk+0x16d/0x630 fs/ext4/inode.c:870
       ext4_bread+0x26/0x180 fs/ext4/inode.c:923
       ext4_quota_write+0x230/0x570 fs/ext4/super.c:6596
       write_blk fs/quota/quota_tree.c:64 [inline]
       get_free_dqblk+0x387/0x7d0 fs/quota/quota_tree.c:125
       do_insert_tree+0x214/0x1970 fs/quota/quota_tree.c:335
       do_insert_tree+0x5b1/0x1970 fs/quota/quota_tree.c:366
       do_insert_tree+0x5b1/0x1970 fs/quota/quota_tree.c:366
       do_insert_tree+0x5b1/0x1970 fs/quota/quota_tree.c:366
       dq_insert_tree fs/quota/quota_tree.c:392 [inline]
       qtree_write_dquot+0x361/0x4b0 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:472
       ext4_acquire_dquot+0x2d9/0x4a0 fs/ext4/super.c:6205
       dqget+0x778/0xeb0 fs/quota/dquot.c:988
       __dquot_initialize+0x3b6/0xcb0 fs/quota/dquot.c:1517
       ext4_process_orphan+0x54/0x300 fs/ext4/orphan.c:325
       ext4_orphan_cleanup+0xaa9/0x12e0 fs/ext4/orphan.c:470
       ext4_fill_super+0x92f0/0x9a60 fs/ext4/super.c:4975
       mount_bdev+0x287/0x3c0 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+0x24a/0xa40 fs/namespace.c:3034
       do_mount fs/namespace.c:3377 [inline]
       __do_sys_mount fs/namespace.c:3585 [inline]
       __se_sys_mount+0x2d6/0x3c0 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 (&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:463
       ext4_acquire_dquot+0x2d9/0x4a0 fs/ext4/super.c:6205
       dqget+0x778/0xeb0 fs/quota/dquot.c:988
       __dquot_initialize+0x3b6/0xcb0 fs/quota/dquot.c:1517
       ext4_process_orphan+0x54/0x300 fs/ext4/orphan.c:325
       ext4_orphan_cleanup+0xaa9/0x12e0 fs/ext4/orphan.c:470
       ext4_fill_super+0x92f0/0x9a60 fs/ext4/super.c:4975
       mount_bdev+0x287/0x3c0 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+0x24a/0xa40 fs/namespace.c:3034
       do_mount fs/namespace.c:3377 [inline]
       __do_sys_mount fs/namespace.c:3585 [inline]
       __se_sys_mount+0x2d6/0x3c0 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

-> #0 (&dquot->dq_lock){+.+.}-{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+0x2c33/0x7c60 kernel/locking/lockdep.c:5012
       lock_acquire+0x197/0x3f0 kernel/locking/lockdep.c:5623
       __mutex_lock_common+0x1eb/0x2390 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:507
       ext4_write_dquot+0x1f0/0x360 fs/ext4/super.c:6185
       mark_dquot_dirty fs/quota/dquot.c:372 [inline]
       mark_all_dquot_dirty+0xf9/0x400 fs/quota/dquot.c:412
       __dquot_free_space+0x7ca/0xb90 fs/quota/dquot.c:1942
       dquot_free_space_nodirty include/linux/quotaops.h:376 [inline]
       dquot_free_space include/linux/quotaops.h:381 [inline]
       dquot_free_block include/linux/quotaops.h:392 [inline]
       ext4_mb_clear_bb fs/ext4/mballoc.c:6151 [inline]
       ext4_free_blocks+0x1af5/0x2480 fs/ext4/mballoc.c:6281
       ext4_remove_blocks fs/ext4/extents.c:2525 [inline]
       ext4_ext_rm_leaf fs/ext4/extents.c:2691 [inline]
       ext4_ext_remove_space+0x1eaa/0x43a0 fs/ext4/extents.c:2939
       ext4_ext_truncate+0x192/0x240 fs/ext4/extents.c:4473
       ext4_truncate+0x9f1/0x10d0 fs/ext4/inode.c:4256
       ext4_evict_inode+0xb43/0x1080 fs/ext4/inode.c:289
       evict+0x485/0x870 fs/inode.c:647
       ext4_orphan_cleanup+0xaa9/0x12e0 fs/ext4/orphan.c:470
       ext4_fill_super+0x92f0/0x9a60 fs/ext4/super.c:4975
       mount_bdev+0x287/0x3c0 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+0x24a/0xa40 fs/namespace.c:3034
       do_mount fs/namespace.c:3377 [inline]
       __do_sys_mount fs/namespace.c:3585 [inline]
       __se_sys_mount+0x2d6/0x3c0 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

other info that might help us debug this:

Chain exists of:
  &dquot->dq_lock --> &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(&dquot->dq_lock);

 *** DEADLOCK ***

4 locks held by syz.0.61/4404:
 #0: ffff888079d5a0e0 (&type->s_umount_key#28/1){+.+.}-{3:3}, at: alloc_super+0x201/0x950 fs/super.c:229
 #1: ffff888079d5a650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1811 [inline]
 #1: ffff888079d5a650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1928 [inline]
 #1: ffff888079d5a650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x444/0x1080 fs/ext4/inode.c:243
 #2: ffff88806df3f020 (&ei->i_data_sem/2){++++}-{3:3}, at: ext4_truncate+0x96d/0x10d0 fs/ext4/inode.c:4251
 #3: ffffffff8c23f118 (dquot_srcu){....}-{0:0}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312

stack backtrace:
CPU: 0 PID: 4404 Comm: syz.0.61 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106
 check_noncircular+0x274/0x310 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+0x2c33/0x7c60 kernel/locking/lockdep.c:5012
 lock_acquire+0x197/0x3f0 kernel/locking/lockdep.c:5623
 __mutex_lock_common+0x1eb/0x2390 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:507
 ext4_write_dquot+0x1f0/0x360 fs/ext4/super.c:6185
 mark_dquot_dirty fs/quota/dquot.c:372 [inline]
 mark_all_dquot_dirty+0xf9/0x400 fs/quota/dquot.c:412
 __dquot_free_space+0x7ca/0xb90 fs/quota/dquot.c:1942
 dquot_free_space_nodirty include/linux/quotaops.h:376 [inline]
 dquot_free_space include/linux/quotaops.h:381 [inline]
 dquot_free_block include/linux/quotaops.h:392 [inline]
 ext4_mb_clear_bb fs/ext4/mballoc.c:6151 [inline]
 ext4_free_blocks+0x1af5/0x2480 fs/ext4/mballoc.c:6281
 ext4_remove_blocks fs/ext4/extents.c:2525 [inline]
 ext4_ext_rm_leaf fs/ext4/extents.c:2691 [inline]
 ext4_ext_remove_space+0x1eaa/0x43a0 fs/ext4/extents.c:2939
 ext4_ext_truncate+0x192/0x240 fs/ext4/extents.c:4473
 ext4_truncate+0x9f1/0x10d0 fs/ext4/inode.c:4256
 ext4_evict_inode+0xb43/0x1080 fs/ext4/inode.c:289
 evict+0x485/0x870 fs/inode.c:647
 ext4_orphan_cleanup+0xaa9/0x12e0 fs/ext4/orphan.c:470
 ext4_fill_super+0x92f0/0x9a60 fs/ext4/super.c:4975
 mount_bdev+0x287/0x3c0 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+0x24a/0xa40 fs/namespace.c:3034
 do_mount fs/namespace.c:3377 [inline]
 __do_sys_mount fs/namespace.c:3585 [inline]
 __se_sys_mount+0x2d6/0x3c0 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
RIP: 0033:0x7f060534ae6a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc1f688c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffc1f688d00 RCX: 00007f060534ae6a
RDX: 0000200000000100 RSI: 0000200000000200 RDI: 00007ffc1f688cc0
RBP: 0000200000000100 R08: 00007ffc1f688d00 R09: 0000000002000005
R10: 0000000002000005 R11: 0000000000000246 R12: 0000200000000200
R13: 00007ffc1f688cc0 R14: 00000000000004fa R15: 0000200000003140
 </TASK>
EXT4-fs (loop0): 1 orphan inode deleted
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue. Quota mode: writeback.

final repro crashed as (corrupted=false):
EXT4-fs error (device loop0): ext4_dirty_inode:6054: inode #3: comm syz.0.61: mark_inode_dirty error
EXT4-fs error (device loop0): ext4_do_update_inode:5218: inode #3: comm syz.0.61: corrupted inode contents
EXT4-fs error (device loop0): __ext4_ext_dirty:183: inode #3: comm syz.0.61: mark_inode_dirty error
EXT4-fs error (device loop0): ext4_acquire_dquot:6209: comm syz.0.61: Failed to acquire dquot type 0
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.0.61/4404 is trying to acquire lock:
ffff88806de540a8 (&dquot->dq_lock){+.+.}-{3:3}, at: dquot_commit+0x5a/0x410 fs/quota/dquot.c:507

but task is already holding lock:
ffff88806df3f020 (&ei->i_data_sem/2){++++}-{3:3}, at: ext4_truncate+0x96d/0x10d0 fs/ext4/inode.c:4251

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #2 (&ei->i_data_sem/2){++++}-{3:3}:
       down_read+0x44/0x2e0 kernel/locking/rwsem.c:1498
       ext4_map_blocks+0x32f/0x1b30 fs/ext4/inode.c:598
       ext4_getblk+0x16d/0x630 fs/ext4/inode.c:870
       ext4_bread+0x26/0x180 fs/ext4/inode.c:923
       ext4_quota_write+0x230/0x570 fs/ext4/super.c:6596
       write_blk fs/quota/quota_tree.c:64 [inline]
       get_free_dqblk+0x387/0x7d0 fs/quota/quota_tree.c:125
       do_insert_tree+0x214/0x1970 fs/quota/quota_tree.c:335
       do_insert_tree+0x5b1/0x1970 fs/quota/quota_tree.c:366
       do_insert_tree+0x5b1/0x1970 fs/quota/quota_tree.c:366
       do_insert_tree+0x5b1/0x1970 fs/quota/quota_tree.c:366
       dq_insert_tree fs/quota/quota_tree.c:392 [inline]
       qtree_write_dquot+0x361/0x4b0 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:472
       ext4_acquire_dquot+0x2d9/0x4a0 fs/ext4/super.c:6205
       dqget+0x778/0xeb0 fs/quota/dquot.c:988
       __dquot_initialize+0x3b6/0xcb0 fs/quota/dquot.c:1517
       ext4_process_orphan+0x54/0x300 fs/ext4/orphan.c:325
       ext4_orphan_cleanup+0xaa9/0x12e0 fs/ext4/orphan.c:470
       ext4_fill_super+0x92f0/0x9a60 fs/ext4/super.c:4975
       mount_bdev+0x287/0x3c0 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+0x24a/0xa40 fs/namespace.c:3034
       do_mount fs/namespace.c:3377 [inline]
       __do_sys_mount fs/namespace.c:3585 [inline]
       __se_sys_mount+0x2d6/0x3c0 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 (&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:463
       ext4_acquire_dquot+0x2d9/0x4a0 fs/ext4/super.c:6205
       dqget+0x778/0xeb0 fs/quota/dquot.c:988
       __dquot_initialize+0x3b6/0xcb0 fs/quota/dquot.c:1517
       ext4_process_orphan+0x54/0x300 fs/ext4/orphan.c:325
       ext4_orphan_cleanup+0xaa9/0x12e0 fs/ext4/orphan.c:470
       ext4_fill_super+0x92f0/0x9a60 fs/ext4/super.c:4975
       mount_bdev+0x287/0x3c0 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+0x24a/0xa40 fs/namespace.c:3034
       do_mount fs/namespace.c:3377 [inline]
       __do_sys_mount fs/namespace.c:3585 [inline]
       __se_sys_mount+0x2d6/0x3c0 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

-> #0 (&dquot->dq_lock){+.+.}-{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+0x2c33/0x7c60 kernel/locking/lockdep.c:5012
       lock_acquire+0x197/0x3f0 kernel/locking/lockdep.c:5623
       __mutex_lock_common+0x1eb/0x2390 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:507
       ext4_write_dquot+0x1f0/0x360 fs/ext4/super.c:6185
       mark_dquot_dirty fs/quota/dquot.c:372 [inline]
       mark_all_dquot_dirty+0xf9/0x400 fs/quota/dquot.c:412
       __dquot_free_space+0x7ca/0xb90 fs/quota/dquot.c:1942
       dquot_free_space_nodirty include/linux/quotaops.h:376 [inline]
       dquot_free_space include/linux/quotaops.h:381 [inline]
       dquot_free_block include/linux/quotaops.h:392 [inline]
       ext4_mb_clear_bb fs/ext4/mballoc.c:6151 [inline]
       ext4_free_blocks+0x1af5/0x2480 fs/ext4/mballoc.c:6281
       ext4_remove_blocks fs/ext4/extents.c:2525 [inline]
       ext4_ext_rm_leaf fs/ext4/extents.c:2691 [inline]
       ext4_ext_remove_space+0x1eaa/0x43a0 fs/ext4/extents.c:2939
       ext4_ext_truncate+0x192/0x240 fs/ext4/extents.c:4473
       ext4_truncate+0x9f1/0x10d0 fs/ext4/inode.c:4256
       ext4_evict_inode+0xb43/0x1080 fs/ext4/inode.c:289
       evict+0x485/0x870 fs/inode.c:647
       ext4_orphan_cleanup+0xaa9/0x12e0 fs/ext4/orphan.c:470
       ext4_fill_super+0x92f0/0x9a60 fs/ext4/super.c:4975
       mount_bdev+0x287/0x3c0 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+0x24a/0xa40 fs/namespace.c:3034
       do_mount fs/namespace.c:3377 [inline]
       __do_sys_mount fs/namespace.c:3585 [inline]
       __se_sys_mount+0x2d6/0x3c0 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

other info that might help us debug this:

Chain exists of:
  &dquot->dq_lock --> &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(&dquot->dq_lock);

 *** DEADLOCK ***

4 locks held by syz.0.61/4404:
 #0: ffff888079d5a0e0 (&type->s_umount_key#28/1){+.+.}-{3:3}, at: alloc_super+0x201/0x950 fs/super.c:229
 #1: ffff888079d5a650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1811 [inline]
 #1: ffff888079d5a650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1928 [inline]
 #1: ffff888079d5a650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x444/0x1080 fs/ext4/inode.c:243
 #2: ffff88806df3f020 (&ei->i_data_sem/2){++++}-{3:3}, at: ext4_truncate+0x96d/0x10d0 fs/ext4/inode.c:4251
 #3: ffffffff8c23f118 (dquot_srcu){....}-{0:0}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312

stack backtrace:
CPU: 0 PID: 4404 Comm: syz.0.61 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106
 check_noncircular+0x274/0x310 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+0x2c33/0x7c60 kernel/locking/lockdep.c:5012
 lock_acquire+0x197/0x3f0 kernel/locking/lockdep.c:5623
 __mutex_lock_common+0x1eb/0x2390 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:507
 ext4_write_dquot+0x1f0/0x360 fs/ext4/super.c:6185
 mark_dquot_dirty fs/quota/dquot.c:372 [inline]
 mark_all_dquot_dirty+0xf9/0x400 fs/quota/dquot.c:412
 __dquot_free_space+0x7ca/0xb90 fs/quota/dquot.c:1942
 dquot_free_space_nodirty include/linux/quotaops.h:376 [inline]
 dquot_free_space include/linux/quotaops.h:381 [inline]
 dquot_free_block include/linux/quotaops.h:392 [inline]
 ext4_mb_clear_bb fs/ext4/mballoc.c:6151 [inline]
 ext4_free_blocks+0x1af5/0x2480 fs/ext4/mballoc.c:6281
 ext4_remove_blocks fs/ext4/extents.c:2525 [inline]
 ext4_ext_rm_leaf fs/ext4/extents.c:2691 [inline]
 ext4_ext_remove_space+0x1eaa/0x43a0 fs/ext4/extents.c:2939
 ext4_ext_truncate+0x192/0x240 fs/ext4/extents.c:4473
 ext4_truncate+0x9f1/0x10d0 fs/ext4/inode.c:4256
 ext4_evict_inode+0xb43/0x1080 fs/ext4/inode.c:289
 evict+0x485/0x870 fs/inode.c:647
 ext4_orphan_cleanup+0xaa9/0x12e0 fs/ext4/orphan.c:470
 ext4_fill_super+0x92f0/0x9a60 fs/ext4/super.c:4975
 mount_bdev+0x287/0x3c0 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+0x24a/0xa40 fs/namespace.c:3034
 do_mount fs/namespace.c:3377 [inline]
 __do_sys_mount fs/namespace.c:3585 [inline]
 __se_sys_mount+0x2d6/0x3c0 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
RIP: 0033:0x7f060534ae6a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc1f688c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffc1f688d00 RCX: 00007f060534ae6a
RDX: 0000200000000100 RSI: 0000200000000200 RDI: 00007ffc1f688cc0
RBP: 0000200000000100 R08: 00007ffc1f688d00 R09: 0000000002000005
R10: 0000000002000005 R11: 0000000000000246 R12: 0000200000000200
R13: 00007ffc1f688cc0 R14: 00000000000004fa R15: 0000200000003140
 </TASK>
EXT4-fs (loop0): 1 orphan inode deleted
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue. Quota mode: writeback.