Extracting prog: 2m7.7009542s Minimizing prog: 2m42.285951728s Simplifying prog options: 0s Extracting C: 38.917349946s Simplifying C: 9m29.298639208s 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', 0x2000051, &(0x7f0000000000), 0x1, 0x4d9, &(0x7f0000000240)="$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") program crashed: possible deadlock in dquot_commit single: successfully extracted reproducer found reproducer with 2 syscalls minimizing guilty program testing program (duration=45.339695325s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getegid detailed listing: executing program 0: getegid() program did not crash testing program (duration=45.339695325s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4 detailed listing: executing program 0: syz_mount_image$ext4(&(0x7f0000000100)='ext4\x00', &(0x7f0000000200)='./file1\x00', 0x2000051, &(0x7f0000000000), 0x1, 0x4d9, &(0x7f0000000240)="$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") program crashed: possible deadlock in dquot_commit extracting C reproducer testing compiled C program (duration=45.339695325s, {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$ext4 program crashed: possible deadlock in dquot_commit simplifying C reproducer testing compiled C program (duration=45.339695325s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4 program crashed: possible deadlock in dquot_commit testing compiled C program (duration=45.339695325s, {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$ext4 program did not crash testing compiled C program (duration=45.339695325s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4 program crashed: possible deadlock in dquot_commit testing compiled C program (duration=45.339695325s, {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$ext4 program crashed: possible deadlock in dquot_commit testing compiled C program (duration=45.339695325s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4 program crashed: possible deadlock in dquot_commit testing compiled C program (duration=45.339695325s, {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$ext4 program did not crash testing compiled C program (duration=45.339695325s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4 program crashed: possible deadlock in dquot_commit testing compiled C program (duration=45.339695325s, {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$ext4 program crashed: possible deadlock in dquot_commit testing program (duration=45.339695325s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4 detailed listing: executing program 0: syz_mount_image$ext4(&(0x7f0000000100)='ext4\x00', &(0x7f0000000200)='./file1\x00', 0x2000051, &(0x7f0000000000), 0x1, 0x4d9, &(0x7f0000000240)="$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") program crashed: possible deadlock in dquot_commit validation run: crashed=true testing program (duration=45.339695325s, {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', 0x2000051, &(0x7f0000000000), 0x1, 0x4d9, &(0x7f0000000240)="$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") program crashed: possible deadlock in dquot_commit validation run: crashed=true testing program (duration=45.339695325s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4 detailed listing: executing program 0: syz_mount_image$ext4(&(0x7f0000000100)='ext4\x00', &(0x7f0000000200)='./file1\x00', 0x2000051, &(0x7f0000000000), 0x1, 0x4d9, &(0x7f0000000240)="$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") program crashed: possible deadlock in dquot_commit validation run: crashed=true reproducing took 19m9.020630185s repro crashed as (corrupted=false): EXT4-fs error (device loop0): __ext4_ext_dirty:202: inode #3: comm syz.0.54: mark_inode_dirty error EXT4-fs error (device loop0): ext4_acquire_dquot:6809: comm syz.0.54: Failed to acquire dquot type 0 ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.0.54/4502 is trying to acquire lock: ffff88806884de68 (&dquot->dq_lock){+.+.}-{3:3}, at: dquot_commit+0x5a/0x410 fs/quota/dquot.c:507 but task is already holding lock: ffff888068bd0c90 (&ei->i_data_sem/2){++++}-{3:3}, at: ext4_truncate+0x987/0x1230 fs/ext4/inode.c:4290 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+0x42/0x2d0 kernel/locking/rwsem.c:1520 ext4_map_blocks+0x316/0x1b60 fs/ext4/inode.c:604 ext4_getblk+0x1ab/0x6d0 fs/ext4/inode.c:890 ext4_bread+0x26/0x170 fs/ext4/inode.c:946 ext4_quota_write+0x230/0x570 fs/ext4/super.c:7196 write_blk fs/quota/quota_tree.c:70 [inline] get_free_dqblk+0x312/0x660 fs/quota/quota_tree.c:136 do_insert_tree+0x22b/0x1040 fs/quota/quota_tree.c:347 do_insert_tree+0x9eb/0x1040 fs/quota/quota_tree.c:402 do_insert_tree+0x9eb/0x1040 fs/quota/quota_tree.c:402 do_insert_tree+0x9eb/0x1040 fs/quota/quota_tree.c:402 dq_insert_tree fs/quota/quota_tree.c:432 [inline] qtree_write_dquot+0x48d/0x5b0 fs/quota/quota_tree.c:451 v2_write_dquot+0x108/0x190 fs/quota/quota_v2.c:361 dquot_acquire+0x2d5/0x520 fs/quota/dquot.c:472 ext4_acquire_dquot+0x2d9/0x4a0 fs/ext4/super.c:6805 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+0xbd3/0x1400 fs/ext4/orphan.c:470 __ext4_fill_super fs/ext4/super.c:5530 [inline] ext4_fill_super+0x7bdf/0x8150 fs/ext4/super.c:5661 get_tree_bdev+0x3f1/0x610 fs/super.c:1366 vfs_get_tree+0x88/0x270 fs/super.c:1573 do_new_mount+0x24a/0xa40 fs/namespace.c:3078 do_mount fs/namespace.c:3421 [inline] __do_sys_mount fs/namespace.c:3629 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3606 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #1 (&s->s_dquot.dqio_sem){++++}-{3:3}: down_read+0x42/0x2d0 kernel/locking/rwsem.c:1520 v2_read_dquot+0x4a/0x110 fs/quota/quota_v2.c:335 dquot_acquire+0x152/0x520 fs/quota/dquot.c:463 ext4_acquire_dquot+0x2d9/0x4a0 fs/ext4/super.c:6805 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+0xbd3/0x1400 fs/ext4/orphan.c:470 __ext4_fill_super fs/ext4/super.c:5530 [inline] ext4_fill_super+0x7bdf/0x8150 fs/ext4/super.c:5661 get_tree_bdev+0x3f1/0x610 fs/super.c:1366 vfs_get_tree+0x88/0x270 fs/super.c:1573 do_new_mount+0x24a/0xa40 fs/namespace.c:3078 do_mount fs/namespace.c:3421 [inline] __do_sys_mount fs/namespace.c:3629 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3606 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #0 (&dquot->dq_lock){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3090 [inline] check_prevs_add kernel/locking/lockdep.c:3209 [inline] validate_chain kernel/locking/lockdep.c:3825 [inline] __lock_acquire+0x2cf8/0x7c50 kernel/locking/lockdep.c:5049 lock_acquire+0x1b4/0x490 kernel/locking/lockdep.c:5662 __mutex_lock_common kernel/locking/mutex.c:603 [inline] __mutex_lock+0x120/0xaf0 kernel/locking/mutex.c:747 dquot_commit+0x5a/0x410 fs/quota/dquot.c:507 ext4_write_dquot+0x1f0/0x360 fs/ext4/super.c:6785 mark_dquot_dirty fs/quota/dquot.c:372 [inline] mark_all_dquot_dirty+0xf9/0x400 fs/quota/dquot.c:412 __dquot_free_space+0x7ec/0xbc0 fs/quota/dquot.c:1942 dquot_free_space_nodirty include/linux/quotaops.h:379 [inline] dquot_free_space include/linux/quotaops.h:384 [inline] dquot_free_block include/linux/quotaops.h:395 [inline] ext4_mb_clear_bb fs/ext4/mballoc.c:6138 [inline] ext4_free_blocks+0x1bab/0x2640 fs/ext4/mballoc.c:6268 ext4_remove_blocks fs/ext4/extents.c:2526 [inline] ext4_ext_rm_leaf fs/ext4/extents.c:2692 [inline] ext4_ext_remove_space+0x1f0d/0x4490 fs/ext4/extents.c:2940 ext4_ext_truncate+0x211/0x370 fs/ext4/extents.c:4470 ext4_truncate+0xa0b/0x1230 fs/ext4/inode.c:4295 ext4_evict_inode+0xb35/0x1100 fs/ext4/inode.c:286 evict+0x485/0x870 fs/inode.c:705 ext4_orphan_cleanup+0xbd3/0x1400 fs/ext4/orphan.c:470 __ext4_fill_super fs/ext4/super.c:5530 [inline] ext4_fill_super+0x7bdf/0x8150 fs/ext4/super.c:5661 get_tree_bdev+0x3f1/0x610 fs/super.c:1366 vfs_get_tree+0x88/0x270 fs/super.c:1573 do_new_mount+0x24a/0xa40 fs/namespace.c:3078 do_mount fs/namespace.c:3421 [inline] __do_sys_mount fs/namespace.c:3629 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3606 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 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.0.54/4502: #0: ffff8880765420e0 (&type->s_umount_key#27/1){+.+.}-{3:3}, at: alloc_super+0x1fa/0x930 fs/super.c:228 #1: ffff888076542650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1891 [inline] #1: ffff888076542650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:2013 [inline] #1: ffff888076542650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x436/0x1100 fs/ext4/inode.c:240 #2: ffff888068bd0c90 (&ei->i_data_sem/2){++++}-{3:3}, at: ext4_truncate+0x987/0x1230 fs/ext4/inode.c:4290 #3: ffffffff8cc71e08 (dquot_srcu){....}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline] #3: ffffffff8cc71e08 (dquot_srcu){....}-{0:0}, at: srcu_read_lock include/linux/srcu.h:165 [inline] #3: ffffffff8cc71e08 (dquot_srcu){....}-{0:0}, at: __dquot_free_space+0x174/0xbc0 fs/quota/dquot.c:1915 stack backtrace: CPU: 0 PID: 4502 Comm: syz.0.54 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 Call Trace: dump_stack_lvl+0x168/0x22e lib/dump_stack.c:106 check_noncircular+0x274/0x310 kernel/locking/lockdep.c:2170 check_prev_add kernel/locking/lockdep.c:3090 [inline] check_prevs_add kernel/locking/lockdep.c:3209 [inline] validate_chain kernel/locking/lockdep.c:3825 [inline] __lock_acquire+0x2cf8/0x7c50 kernel/locking/lockdep.c:5049 lock_acquire+0x1b4/0x490 kernel/locking/lockdep.c:5662 __mutex_lock_common kernel/locking/mutex.c:603 [inline] __mutex_lock+0x120/0xaf0 kernel/locking/mutex.c:747 dquot_commit+0x5a/0x410 fs/quota/dquot.c:507 ext4_write_dquot+0x1f0/0x360 fs/ext4/super.c:6785 mark_dquot_dirty fs/quota/dquot.c:372 [inline] mark_all_dquot_dirty+0xf9/0x400 fs/quota/dquot.c:412 __dquot_free_space+0x7ec/0xbc0 fs/quota/dquot.c:1942 dquot_free_space_nodirty include/linux/quotaops.h:379 [inline] dquot_free_space include/linux/quotaops.h:384 [inline] dquot_free_block include/linux/quotaops.h:395 [inline] ext4_mb_clear_bb fs/ext4/mballoc.c:6138 [inline] ext4_free_blocks+0x1bab/0x2640 fs/ext4/mballoc.c:6268 ext4_remove_blocks fs/ext4/extents.c:2526 [inline] ext4_ext_rm_leaf fs/ext4/extents.c:2692 [inline] ext4_ext_remove_space+0x1f0d/0x4490 fs/ext4/extents.c:2940 ext4_ext_truncate+0x211/0x370 fs/ext4/extents.c:4470 ext4_truncate+0xa0b/0x1230 fs/ext4/inode.c:4295 ext4_evict_inode+0xb35/0x1100 fs/ext4/inode.c:286 evict+0x485/0x870 fs/inode.c:705 ext4_orphan_cleanup+0xbd3/0x1400 fs/ext4/orphan.c:470 __ext4_fill_super fs/ext4/super.c:5530 [inline] ext4_fill_super+0x7bdf/0x8150 fs/ext4/super.c:5661 get_tree_bdev+0x3f1/0x610 fs/super.c:1366 vfs_get_tree+0x88/0x270 fs/super.c:1573 do_new_mount+0x24a/0xa40 fs/namespace.c:3078 do_mount fs/namespace.c:3421 [inline] __do_sys_mount fs/namespace.c:3629 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3606 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fc319d90e6a 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:00007ffc20f69d08 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007ffc20f69d90 RCX: 00007fc319d90e6a RDX: 0000200000000100 RSI: 0000200000000200 RDI: 00007ffc20f69d50 RBP: 0000200000000100 R08: 00007ffc20f69d90 R09: 0000000002000051 R10: 0000000002000051 R11: 0000000000000246 R12: 0000200000000200 R13: 00007ffc20f69d50 R14: 00000000000004d9 R15: 0000200000000000 EXT4-fs (loop0): 1 orphan inode deleted final repro crashed as (corrupted=false): EXT4-fs error (device loop0): __ext4_ext_dirty:202: inode #3: comm syz.0.54: mark_inode_dirty error EXT4-fs error (device loop0): ext4_acquire_dquot:6809: comm syz.0.54: Failed to acquire dquot type 0 ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.0.54/4502 is trying to acquire lock: ffff88806884de68 (&dquot->dq_lock){+.+.}-{3:3}, at: dquot_commit+0x5a/0x410 fs/quota/dquot.c:507 but task is already holding lock: ffff888068bd0c90 (&ei->i_data_sem/2){++++}-{3:3}, at: ext4_truncate+0x987/0x1230 fs/ext4/inode.c:4290 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+0x42/0x2d0 kernel/locking/rwsem.c:1520 ext4_map_blocks+0x316/0x1b60 fs/ext4/inode.c:604 ext4_getblk+0x1ab/0x6d0 fs/ext4/inode.c:890 ext4_bread+0x26/0x170 fs/ext4/inode.c:946 ext4_quota_write+0x230/0x570 fs/ext4/super.c:7196 write_blk fs/quota/quota_tree.c:70 [inline] get_free_dqblk+0x312/0x660 fs/quota/quota_tree.c:136 do_insert_tree+0x22b/0x1040 fs/quota/quota_tree.c:347 do_insert_tree+0x9eb/0x1040 fs/quota/quota_tree.c:402 do_insert_tree+0x9eb/0x1040 fs/quota/quota_tree.c:402 do_insert_tree+0x9eb/0x1040 fs/quota/quota_tree.c:402 dq_insert_tree fs/quota/quota_tree.c:432 [inline] qtree_write_dquot+0x48d/0x5b0 fs/quota/quota_tree.c:451 v2_write_dquot+0x108/0x190 fs/quota/quota_v2.c:361 dquot_acquire+0x2d5/0x520 fs/quota/dquot.c:472 ext4_acquire_dquot+0x2d9/0x4a0 fs/ext4/super.c:6805 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+0xbd3/0x1400 fs/ext4/orphan.c:470 __ext4_fill_super fs/ext4/super.c:5530 [inline] ext4_fill_super+0x7bdf/0x8150 fs/ext4/super.c:5661 get_tree_bdev+0x3f1/0x610 fs/super.c:1366 vfs_get_tree+0x88/0x270 fs/super.c:1573 do_new_mount+0x24a/0xa40 fs/namespace.c:3078 do_mount fs/namespace.c:3421 [inline] __do_sys_mount fs/namespace.c:3629 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3606 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #1 (&s->s_dquot.dqio_sem){++++}-{3:3}: down_read+0x42/0x2d0 kernel/locking/rwsem.c:1520 v2_read_dquot+0x4a/0x110 fs/quota/quota_v2.c:335 dquot_acquire+0x152/0x520 fs/quota/dquot.c:463 ext4_acquire_dquot+0x2d9/0x4a0 fs/ext4/super.c:6805 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+0xbd3/0x1400 fs/ext4/orphan.c:470 __ext4_fill_super fs/ext4/super.c:5530 [inline] ext4_fill_super+0x7bdf/0x8150 fs/ext4/super.c:5661 get_tree_bdev+0x3f1/0x610 fs/super.c:1366 vfs_get_tree+0x88/0x270 fs/super.c:1573 do_new_mount+0x24a/0xa40 fs/namespace.c:3078 do_mount fs/namespace.c:3421 [inline] __do_sys_mount fs/namespace.c:3629 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3606 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #0 (&dquot->dq_lock){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3090 [inline] check_prevs_add kernel/locking/lockdep.c:3209 [inline] validate_chain kernel/locking/lockdep.c:3825 [inline] __lock_acquire+0x2cf8/0x7c50 kernel/locking/lockdep.c:5049 lock_acquire+0x1b4/0x490 kernel/locking/lockdep.c:5662 __mutex_lock_common kernel/locking/mutex.c:603 [inline] __mutex_lock+0x120/0xaf0 kernel/locking/mutex.c:747 dquot_commit+0x5a/0x410 fs/quota/dquot.c:507 ext4_write_dquot+0x1f0/0x360 fs/ext4/super.c:6785 mark_dquot_dirty fs/quota/dquot.c:372 [inline] mark_all_dquot_dirty+0xf9/0x400 fs/quota/dquot.c:412 __dquot_free_space+0x7ec/0xbc0 fs/quota/dquot.c:1942 dquot_free_space_nodirty include/linux/quotaops.h:379 [inline] dquot_free_space include/linux/quotaops.h:384 [inline] dquot_free_block include/linux/quotaops.h:395 [inline] ext4_mb_clear_bb fs/ext4/mballoc.c:6138 [inline] ext4_free_blocks+0x1bab/0x2640 fs/ext4/mballoc.c:6268 ext4_remove_blocks fs/ext4/extents.c:2526 [inline] ext4_ext_rm_leaf fs/ext4/extents.c:2692 [inline] ext4_ext_remove_space+0x1f0d/0x4490 fs/ext4/extents.c:2940 ext4_ext_truncate+0x211/0x370 fs/ext4/extents.c:4470 ext4_truncate+0xa0b/0x1230 fs/ext4/inode.c:4295 ext4_evict_inode+0xb35/0x1100 fs/ext4/inode.c:286 evict+0x485/0x870 fs/inode.c:705 ext4_orphan_cleanup+0xbd3/0x1400 fs/ext4/orphan.c:470 __ext4_fill_super fs/ext4/super.c:5530 [inline] ext4_fill_super+0x7bdf/0x8150 fs/ext4/super.c:5661 get_tree_bdev+0x3f1/0x610 fs/super.c:1366 vfs_get_tree+0x88/0x270 fs/super.c:1573 do_new_mount+0x24a/0xa40 fs/namespace.c:3078 do_mount fs/namespace.c:3421 [inline] __do_sys_mount fs/namespace.c:3629 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3606 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 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.0.54/4502: #0: ffff8880765420e0 (&type->s_umount_key#27/1){+.+.}-{3:3}, at: alloc_super+0x1fa/0x930 fs/super.c:228 #1: ffff888076542650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1891 [inline] #1: ffff888076542650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:2013 [inline] #1: ffff888076542650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x436/0x1100 fs/ext4/inode.c:240 #2: ffff888068bd0c90 (&ei->i_data_sem/2){++++}-{3:3}, at: ext4_truncate+0x987/0x1230 fs/ext4/inode.c:4290 #3: ffffffff8cc71e08 (dquot_srcu){....}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline] #3: ffffffff8cc71e08 (dquot_srcu){....}-{0:0}, at: srcu_read_lock include/linux/srcu.h:165 [inline] #3: ffffffff8cc71e08 (dquot_srcu){....}-{0:0}, at: __dquot_free_space+0x174/0xbc0 fs/quota/dquot.c:1915 stack backtrace: CPU: 0 PID: 4502 Comm: syz.0.54 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 Call Trace: dump_stack_lvl+0x168/0x22e lib/dump_stack.c:106 check_noncircular+0x274/0x310 kernel/locking/lockdep.c:2170 check_prev_add kernel/locking/lockdep.c:3090 [inline] check_prevs_add kernel/locking/lockdep.c:3209 [inline] validate_chain kernel/locking/lockdep.c:3825 [inline] __lock_acquire+0x2cf8/0x7c50 kernel/locking/lockdep.c:5049 lock_acquire+0x1b4/0x490 kernel/locking/lockdep.c:5662 __mutex_lock_common kernel/locking/mutex.c:603 [inline] __mutex_lock+0x120/0xaf0 kernel/locking/mutex.c:747 dquot_commit+0x5a/0x410 fs/quota/dquot.c:507 ext4_write_dquot+0x1f0/0x360 fs/ext4/super.c:6785 mark_dquot_dirty fs/quota/dquot.c:372 [inline] mark_all_dquot_dirty+0xf9/0x400 fs/quota/dquot.c:412 __dquot_free_space+0x7ec/0xbc0 fs/quota/dquot.c:1942 dquot_free_space_nodirty include/linux/quotaops.h:379 [inline] dquot_free_space include/linux/quotaops.h:384 [inline] dquot_free_block include/linux/quotaops.h:395 [inline] ext4_mb_clear_bb fs/ext4/mballoc.c:6138 [inline] ext4_free_blocks+0x1bab/0x2640 fs/ext4/mballoc.c:6268 ext4_remove_blocks fs/ext4/extents.c:2526 [inline] ext4_ext_rm_leaf fs/ext4/extents.c:2692 [inline] ext4_ext_remove_space+0x1f0d/0x4490 fs/ext4/extents.c:2940 ext4_ext_truncate+0x211/0x370 fs/ext4/extents.c:4470 ext4_truncate+0xa0b/0x1230 fs/ext4/inode.c:4295 ext4_evict_inode+0xb35/0x1100 fs/ext4/inode.c:286 evict+0x485/0x870 fs/inode.c:705 ext4_orphan_cleanup+0xbd3/0x1400 fs/ext4/orphan.c:470 __ext4_fill_super fs/ext4/super.c:5530 [inline] ext4_fill_super+0x7bdf/0x8150 fs/ext4/super.c:5661 get_tree_bdev+0x3f1/0x610 fs/super.c:1366 vfs_get_tree+0x88/0x270 fs/super.c:1573 do_new_mount+0x24a/0xa40 fs/namespace.c:3078 do_mount fs/namespace.c:3421 [inline] __do_sys_mount fs/namespace.c:3629 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3606 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fc319d90e6a 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:00007ffc20f69d08 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007ffc20f69d90 RCX: 00007fc319d90e6a RDX: 0000200000000100 RSI: 0000200000000200 RDI: 00007ffc20f69d50 RBP: 0000200000000100 R08: 00007ffc20f69d90 R09: 0000000002000051 R10: 0000000002000051 R11: 0000000000000246 R12: 0000200000000200 R13: 00007ffc20f69d50 R14: 00000000000004d9 R15: 0000200000000000 EXT4-fs (loop0): 1 orphan inode deleted