Extracting prog: 2m22.494029599s Minimizing prog: 2m42.624445969s Simplifying prog options: 0s Extracting C: 40.152094176s Simplifying C: 9m39.63611836s 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 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', 0x15, &(0x7f0000000240), 0x1, 0x50d, &(0x7f0000000980)="$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") program crashed: possible deadlock in dquot_commit single: successfully extracted reproducer found reproducer with 2 syscalls minimizing guilty program testing program (duration=53.249041195s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getegid detailed listing: executing program 0: getegid() program did not crash testing program (duration=53.249041195s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4 detailed listing: executing program 0: syz_mount_image$ext4(&(0x7f0000000100)='ext4\x00', &(0x7f0000000200)='./file1\x00', 0x15, &(0x7f0000000240), 0x1, 0x50d, &(0x7f0000000980)="$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") program crashed: possible deadlock in dquot_commit extracting C reproducer testing compiled C program (duration=53.249041195s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4 program crashed: possible deadlock in dquot_commit simplifying C reproducer testing compiled C program (duration=53.249041195s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4 program crashed: possible deadlock in dquot_commit testing compiled C program (duration=53.249041195s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4 program did not crash testing compiled C program (duration=53.249041195s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4 program crashed: possible deadlock in dquot_commit testing compiled C program (duration=53.249041195s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4 program crashed: possible deadlock in dquot_commit testing compiled C program (duration=53.249041195s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4 program crashed: possible deadlock in dquot_commit testing compiled C program (duration=53.249041195s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4 program did not crash testing compiled C program (duration=53.249041195s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4 program crashed: possible deadlock in dquot_commit testing compiled C program (duration=53.249041195s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4 program crashed: possible deadlock in dquot_commit reproducing took 15m24.906769663s repro crashed as (corrupted=false): EXT4-fs error (device loop0): ext4_do_update_inode:5224: inode #3: comm syz-executor914: corrupted inode contents EXT4-fs error (device loop0): __ext4_ext_dirty:202: inode #3: comm syz-executor914: mark_inode_dirty error EXT4-fs error (device loop0): ext4_acquire_dquot:6794: comm syz-executor914: Failed to acquire dquot type 0 ====================================================== WARNING: possible circular locking dependency detected 6.1.125-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor914/4423 is trying to acquire lock: ffff0000e4848b28 (&dquot->dq_lock){+.+.}-{3:3}, at: dquot_commit+0x54/0x240 fs/quota/dquot.c:507 but task is already holding lock: ffff0000e4893eb8 (&ei->i_data_sem/2){++++}-{3:3}, at: ext4_truncate+0x7e0/0x1178 fs/ext4/inode.c:4283 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+0x64/0x308 kernel/locking/rwsem.c:1520 ext4_map_blocks+0x2ac/0x1810 fs/ext4/inode.c:603 ext4_getblk+0x198/0x6ec fs/ext4/inode.c:889 ext4_bread+0x3c/0x1b0 fs/ext4/inode.c:945 ext4_quota_write+0x230/0x54c fs/ext4/super.c:7164 write_blk fs/quota/quota_tree.c:70 [inline] get_free_dqblk+0x28c/0x598 fs/quota/quota_tree.c:136 do_insert_tree+0x204/0xec4 fs/quota/quota_tree.c:347 do_insert_tree+0x834/0xec4 fs/quota/quota_tree.c:402 do_insert_tree+0x834/0xec4 fs/quota/quota_tree.c:402 do_insert_tree+0x834/0xec4 fs/quota/quota_tree.c:402 dq_insert_tree fs/quota/quota_tree.c:432 [inline] qtree_write_dquot+0x3c8/0x4d8 fs/quota/quota_tree.c:451 v2_write_dquot+0xf4/0x188 fs/quota/quota_v2.c:361 dquot_acquire+0x2c4/0x5c4 fs/quota/dquot.c:472 ext4_acquire_dquot+0x270/0x420 fs/ext4/super.c:6790 dqget+0x660/0xcec fs/quota/dquot.c:988 __dquot_initialize+0x344/0xc04 fs/quota/dquot.c:1517 dquot_initialize+0x24/0x34 fs/quota/dquot.c:1579 ext4_process_orphan+0x5c/0x2b8 fs/ext4/orphan.c:329 ext4_orphan_cleanup+0x974/0x1134 fs/ext4/orphan.c:474 __ext4_fill_super fs/ext4/super.c:5522 [inline] ext4_fill_super+0x6f04/0x7570 fs/ext4/super.c:5653 get_tree_bdev+0x360/0x54c fs/super.c:1366 ext4_get_tree+0x28/0x38 fs/ext4/super.c:5683 vfs_get_tree+0x90/0x274 fs/super.c:1573 do_new_mount+0x278/0x8fc fs/namespace.c:3056 path_mount+0x590/0xe5c fs/namespace.c:3386 do_mount fs/namespace.c:3399 [inline] __do_sys_mount fs/namespace.c:3607 [inline] __se_sys_mount fs/namespace.c:3584 [inline] __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3584 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 -> #1 (&s->s_dquot.dqio_sem){++++}-{3:3}: down_read+0x64/0x308 kernel/locking/rwsem.c:1520 v2_read_dquot+0x50/0x11c fs/quota/quota_v2.c:335 dquot_acquire+0x130/0x5c4 fs/quota/dquot.c:463 ext4_acquire_dquot+0x270/0x420 fs/ext4/super.c:6790 dqget+0x660/0xcec fs/quota/dquot.c:988 __dquot_initialize+0x344/0xc04 fs/quota/dquot.c:1517 dquot_initialize+0x24/0x34 fs/quota/dquot.c:1579 ext4_process_orphan+0x5c/0x2b8 fs/ext4/orphan.c:329 ext4_orphan_cleanup+0x974/0x1134 fs/ext4/orphan.c:474 __ext4_fill_super fs/ext4/super.c:5522 [inline] ext4_fill_super+0x6f04/0x7570 fs/ext4/super.c:5653 get_tree_bdev+0x360/0x54c fs/super.c:1366 ext4_get_tree+0x28/0x38 fs/ext4/super.c:5683 vfs_get_tree+0x90/0x274 fs/super.c:1573 do_new_mount+0x278/0x8fc fs/namespace.c:3056 path_mount+0x590/0xe5c fs/namespace.c:3386 do_mount fs/namespace.c:3399 [inline] __do_sys_mount fs/namespace.c:3607 [inline] __se_sys_mount fs/namespace.c:3584 [inline] __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3584 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 -> #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+0x3338/0x7680 kernel/locking/lockdep.c:5049 lock_acquire+0x26c/0x7cc kernel/locking/lockdep.c:5662 __mutex_lock_common+0x190/0x21a0 kernel/locking/mutex.c:603 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 dquot_commit+0x54/0x240 fs/quota/dquot.c:507 ext4_write_dquot+0x1b4/0x314 fs/ext4/super.c:6770 ext4_mark_dquot_dirty+0xe8/0x140 fs/ext4/super.c:6830 mark_dquot_dirty fs/quota/dquot.c:372 [inline] mark_all_dquot_dirty+0x108/0x424 fs/quota/dquot.c:412 __dquot_free_space+0x840/0xce4 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:6143 [inline] ext4_free_blocks+0x1b14/0x2b64 fs/ext4/mballoc.c:6273 ext4_remove_blocks fs/ext4/extents.c:2525 [inline] ext4_ext_rm_leaf fs/ext4/extents.c:2691 [inline] ext4_ext_remove_space+0x1bd0/0x4544 fs/ext4/extents.c:2939 ext4_ext_truncate+0x168/0x210 fs/ext4/extents.c:4469 ext4_truncate+0xa08/0x1178 fs/ext4/inode.c:4288 ext4_evict_inode+0xc3c/0x12cc fs/ext4/inode.c:286 evict+0x418/0x894 fs/inode.c:705 iput_final fs/inode.c:1834 [inline] iput+0x7c0/0x8a4 fs/inode.c:1860 ext4_process_orphan+0x244/0x2b8 fs/ext4/orphan.c:360 ext4_orphan_cleanup+0x974/0x1134 fs/ext4/orphan.c:474 __ext4_fill_super fs/ext4/super.c:5522 [inline] ext4_fill_super+0x6f04/0x7570 fs/ext4/super.c:5653 get_tree_bdev+0x360/0x54c fs/super.c:1366 ext4_get_tree+0x28/0x38 fs/ext4/super.c:5683 vfs_get_tree+0x90/0x274 fs/super.c:1573 do_new_mount+0x278/0x8fc fs/namespace.c:3056 path_mount+0x590/0xe5c fs/namespace.c:3386 do_mount fs/namespace.c:3399 [inline] __do_sys_mount fs/namespace.c:3607 [inline] __se_sys_mount fs/namespace.c:3584 [inline] __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3584 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 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-executor914/4423: #0: ffff0000d25480e0 (&type->s_umount_key#26/1){+.+.}-{3:3}, at: alloc_super+0x1b4/0x824 fs/super.c:228 #1: ffff0000d2548650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1891 [inline] #1: ffff0000d2548650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:2013 [inline] #1: ffff0000d2548650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x408/0x12cc fs/ext4/inode.c:240 #2: ffff0000e4893eb8 (&ei->i_data_sem/2){++++}-{3:3}, at: ext4_truncate+0x7e0/0x1178 fs/ext4/inode.c:4283 #3: ffff800015d98e48 (dquot_srcu){....}-{0:0}, at: rcu_lock_acquire+0x10/0x4c include/linux/rcupdate.h:349 stack backtrace: CPU: 1 PID: 4423 Comm: syz-executor914 Not tainted 6.1.125-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x5c lib/dump_stack.c:113 print_circular_bug+0x150/0x1b8 kernel/locking/lockdep.c:2048 check_noncircular+0x2cc/0x378 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+0x3338/0x7680 kernel/locking/lockdep.c:5049 lock_acquire+0x26c/0x7cc kernel/locking/lockdep.c:5662 __mutex_lock_common+0x190/0x21a0 kernel/locking/mutex.c:603 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 dquot_commit+0x54/0x240 fs/quota/dquot.c:507 ext4_write_dquot+0x1b4/0x314 fs/ext4/super.c:6770 ext4_mark_dquot_dirty+0xe8/0x140 fs/ext4/super.c:6830 mark_dquot_dirty fs/quota/dquot.c:372 [inline] mark_all_dquot_dirty+0x108/0x424 fs/quota/dquot.c:412 __dquot_free_space+0x840/0xce4 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:6143 [inline] ext4_free_blocks+0x1b14/0x2b64 fs/ext4/mballoc.c:6273 ext4_remove_blocks fs/ext4/extents.c:2525 [inline] ext4_ext_rm_leaf fs/ext4/extents.c:2691 [inline] ext4_ext_remove_space+0x1bd0/0x4544 fs/ext4/extents.c:2939 ext4_ext_truncate+0x168/0x210 fs/ext4/extents.c:4469 ext4_truncate+0xa08/0x1178 fs/ext4/inode.c:4288 ext4_evict_inode+0xc3c/0x12cc fs/ext4/inode.c:286 evict+0x418/0x894 fs/inode.c:705 iput_final fs/inode.c:1834 [inline] iput+0x7c0/0x8a4 fs/inode.c:1860 ext4_process_orphan+0x244/0x2b8 fs/ext4/orphan.c:360 ext4_orphan_cleanup+0x974/0x1134 fs/ext4/orphan.c:474 __ext4_fill_super fs/ext4/super.c:5522 [inline] ext4_fill_super+0x6f04/0x7570 fs/ext4/super.c:5653 get_tree_bdev+0x360/0x54c fs/super.c:1366 ext4_get_tree+0x28/0x38 fs/ext4/super.c:5683 vfs_get_tree+0x90/0x274 fs/super.c:1573 do_new_mount+0x278/0x8fc fs/namespace.c:3056 path_mount+0x590/0xe5c fs/namespace.c:3386 do_mount fs/namespace.c:3399 [inline] __do_sys_mount fs/namespace.c:3607 [inline] __se_sys_mount fs/namespace.c:3584 [inline] __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3584 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 EXT4-fs (loop0): 1 orphan inode deleted final repro crashed as (corrupted=false): EXT4-fs error (device loop0): ext4_do_update_inode:5224: inode #3: comm syz-executor914: corrupted inode contents EXT4-fs error (device loop0): __ext4_ext_dirty:202: inode #3: comm syz-executor914: mark_inode_dirty error EXT4-fs error (device loop0): ext4_acquire_dquot:6794: comm syz-executor914: Failed to acquire dquot type 0 ====================================================== WARNING: possible circular locking dependency detected 6.1.125-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor914/4423 is trying to acquire lock: ffff0000e4848b28 (&dquot->dq_lock){+.+.}-{3:3}, at: dquot_commit+0x54/0x240 fs/quota/dquot.c:507 but task is already holding lock: ffff0000e4893eb8 (&ei->i_data_sem/2){++++}-{3:3}, at: ext4_truncate+0x7e0/0x1178 fs/ext4/inode.c:4283 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+0x64/0x308 kernel/locking/rwsem.c:1520 ext4_map_blocks+0x2ac/0x1810 fs/ext4/inode.c:603 ext4_getblk+0x198/0x6ec fs/ext4/inode.c:889 ext4_bread+0x3c/0x1b0 fs/ext4/inode.c:945 ext4_quota_write+0x230/0x54c fs/ext4/super.c:7164 write_blk fs/quota/quota_tree.c:70 [inline] get_free_dqblk+0x28c/0x598 fs/quota/quota_tree.c:136 do_insert_tree+0x204/0xec4 fs/quota/quota_tree.c:347 do_insert_tree+0x834/0xec4 fs/quota/quota_tree.c:402 do_insert_tree+0x834/0xec4 fs/quota/quota_tree.c:402 do_insert_tree+0x834/0xec4 fs/quota/quota_tree.c:402 dq_insert_tree fs/quota/quota_tree.c:432 [inline] qtree_write_dquot+0x3c8/0x4d8 fs/quota/quota_tree.c:451 v2_write_dquot+0xf4/0x188 fs/quota/quota_v2.c:361 dquot_acquire+0x2c4/0x5c4 fs/quota/dquot.c:472 ext4_acquire_dquot+0x270/0x420 fs/ext4/super.c:6790 dqget+0x660/0xcec fs/quota/dquot.c:988 __dquot_initialize+0x344/0xc04 fs/quota/dquot.c:1517 dquot_initialize+0x24/0x34 fs/quota/dquot.c:1579 ext4_process_orphan+0x5c/0x2b8 fs/ext4/orphan.c:329 ext4_orphan_cleanup+0x974/0x1134 fs/ext4/orphan.c:474 __ext4_fill_super fs/ext4/super.c:5522 [inline] ext4_fill_super+0x6f04/0x7570 fs/ext4/super.c:5653 get_tree_bdev+0x360/0x54c fs/super.c:1366 ext4_get_tree+0x28/0x38 fs/ext4/super.c:5683 vfs_get_tree+0x90/0x274 fs/super.c:1573 do_new_mount+0x278/0x8fc fs/namespace.c:3056 path_mount+0x590/0xe5c fs/namespace.c:3386 do_mount fs/namespace.c:3399 [inline] __do_sys_mount fs/namespace.c:3607 [inline] __se_sys_mount fs/namespace.c:3584 [inline] __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3584 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 -> #1 (&s->s_dquot.dqio_sem){++++}-{3:3}: down_read+0x64/0x308 kernel/locking/rwsem.c:1520 v2_read_dquot+0x50/0x11c fs/quota/quota_v2.c:335 dquot_acquire+0x130/0x5c4 fs/quota/dquot.c:463 ext4_acquire_dquot+0x270/0x420 fs/ext4/super.c:6790 dqget+0x660/0xcec fs/quota/dquot.c:988 __dquot_initialize+0x344/0xc04 fs/quota/dquot.c:1517 dquot_initialize+0x24/0x34 fs/quota/dquot.c:1579 ext4_process_orphan+0x5c/0x2b8 fs/ext4/orphan.c:329 ext4_orphan_cleanup+0x974/0x1134 fs/ext4/orphan.c:474 __ext4_fill_super fs/ext4/super.c:5522 [inline] ext4_fill_super+0x6f04/0x7570 fs/ext4/super.c:5653 get_tree_bdev+0x360/0x54c fs/super.c:1366 ext4_get_tree+0x28/0x38 fs/ext4/super.c:5683 vfs_get_tree+0x90/0x274 fs/super.c:1573 do_new_mount+0x278/0x8fc fs/namespace.c:3056 path_mount+0x590/0xe5c fs/namespace.c:3386 do_mount fs/namespace.c:3399 [inline] __do_sys_mount fs/namespace.c:3607 [inline] __se_sys_mount fs/namespace.c:3584 [inline] __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3584 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 -> #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+0x3338/0x7680 kernel/locking/lockdep.c:5049 lock_acquire+0x26c/0x7cc kernel/locking/lockdep.c:5662 __mutex_lock_common+0x190/0x21a0 kernel/locking/mutex.c:603 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 dquot_commit+0x54/0x240 fs/quota/dquot.c:507 ext4_write_dquot+0x1b4/0x314 fs/ext4/super.c:6770 ext4_mark_dquot_dirty+0xe8/0x140 fs/ext4/super.c:6830 mark_dquot_dirty fs/quota/dquot.c:372 [inline] mark_all_dquot_dirty+0x108/0x424 fs/quota/dquot.c:412 __dquot_free_space+0x840/0xce4 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:6143 [inline] ext4_free_blocks+0x1b14/0x2b64 fs/ext4/mballoc.c:6273 ext4_remove_blocks fs/ext4/extents.c:2525 [inline] ext4_ext_rm_leaf fs/ext4/extents.c:2691 [inline] ext4_ext_remove_space+0x1bd0/0x4544 fs/ext4/extents.c:2939 ext4_ext_truncate+0x168/0x210 fs/ext4/extents.c:4469 ext4_truncate+0xa08/0x1178 fs/ext4/inode.c:4288 ext4_evict_inode+0xc3c/0x12cc fs/ext4/inode.c:286 evict+0x418/0x894 fs/inode.c:705 iput_final fs/inode.c:1834 [inline] iput+0x7c0/0x8a4 fs/inode.c:1860 ext4_process_orphan+0x244/0x2b8 fs/ext4/orphan.c:360 ext4_orphan_cleanup+0x974/0x1134 fs/ext4/orphan.c:474 __ext4_fill_super fs/ext4/super.c:5522 [inline] ext4_fill_super+0x6f04/0x7570 fs/ext4/super.c:5653 get_tree_bdev+0x360/0x54c fs/super.c:1366 ext4_get_tree+0x28/0x38 fs/ext4/super.c:5683 vfs_get_tree+0x90/0x274 fs/super.c:1573 do_new_mount+0x278/0x8fc fs/namespace.c:3056 path_mount+0x590/0xe5c fs/namespace.c:3386 do_mount fs/namespace.c:3399 [inline] __do_sys_mount fs/namespace.c:3607 [inline] __se_sys_mount fs/namespace.c:3584 [inline] __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3584 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 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-executor914/4423: #0: ffff0000d25480e0 (&type->s_umount_key#26/1){+.+.}-{3:3}, at: alloc_super+0x1b4/0x824 fs/super.c:228 #1: ffff0000d2548650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1891 [inline] #1: ffff0000d2548650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:2013 [inline] #1: ffff0000d2548650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x408/0x12cc fs/ext4/inode.c:240 #2: ffff0000e4893eb8 (&ei->i_data_sem/2){++++}-{3:3}, at: ext4_truncate+0x7e0/0x1178 fs/ext4/inode.c:4283 #3: ffff800015d98e48 (dquot_srcu){....}-{0:0}, at: rcu_lock_acquire+0x10/0x4c include/linux/rcupdate.h:349 stack backtrace: CPU: 1 PID: 4423 Comm: syz-executor914 Not tainted 6.1.125-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x5c lib/dump_stack.c:113 print_circular_bug+0x150/0x1b8 kernel/locking/lockdep.c:2048 check_noncircular+0x2cc/0x378 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+0x3338/0x7680 kernel/locking/lockdep.c:5049 lock_acquire+0x26c/0x7cc kernel/locking/lockdep.c:5662 __mutex_lock_common+0x190/0x21a0 kernel/locking/mutex.c:603 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 dquot_commit+0x54/0x240 fs/quota/dquot.c:507 ext4_write_dquot+0x1b4/0x314 fs/ext4/super.c:6770 ext4_mark_dquot_dirty+0xe8/0x140 fs/ext4/super.c:6830 mark_dquot_dirty fs/quota/dquot.c:372 [inline] mark_all_dquot_dirty+0x108/0x424 fs/quota/dquot.c:412 __dquot_free_space+0x840/0xce4 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:6143 [inline] ext4_free_blocks+0x1b14/0x2b64 fs/ext4/mballoc.c:6273 ext4_remove_blocks fs/ext4/extents.c:2525 [inline] ext4_ext_rm_leaf fs/ext4/extents.c:2691 [inline] ext4_ext_remove_space+0x1bd0/0x4544 fs/ext4/extents.c:2939 ext4_ext_truncate+0x168/0x210 fs/ext4/extents.c:4469 ext4_truncate+0xa08/0x1178 fs/ext4/inode.c:4288 ext4_evict_inode+0xc3c/0x12cc fs/ext4/inode.c:286 evict+0x418/0x894 fs/inode.c:705 iput_final fs/inode.c:1834 [inline] iput+0x7c0/0x8a4 fs/inode.c:1860 ext4_process_orphan+0x244/0x2b8 fs/ext4/orphan.c:360 ext4_orphan_cleanup+0x974/0x1134 fs/ext4/orphan.c:474 __ext4_fill_super fs/ext4/super.c:5522 [inline] ext4_fill_super+0x6f04/0x7570 fs/ext4/super.c:5653 get_tree_bdev+0x360/0x54c fs/super.c:1366 ext4_get_tree+0x28/0x38 fs/ext4/super.c:5683 vfs_get_tree+0x90/0x274 fs/super.c:1573 do_new_mount+0x278/0x8fc fs/namespace.c:3056 path_mount+0x590/0xe5c fs/namespace.c:3386 do_mount fs/namespace.c:3399 [inline] __do_sys_mount fs/namespace.c:3607 [inline] __se_sys_mount fs/namespace.c:3584 [inline] __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3584 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 EXT4-fs (loop0): 1 orphan inode deleted