Extracting prog: 4m35.654643308s Minimizing prog: 12m13.315760283s Simplifying prog options: 0s Extracting C: 34.762765666s Simplifying C: 13m17.474243748s 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}}): syz_mount_image$ext4-syz_mount_image$ext4 detailed listing: executing program 0: syz_mount_image$ext4(&(0x7f0000000000)='ext4\x00', &(0x7f0000000500)='./bus\x00', 0x1004508, &(0x7f0000000040)={[{@journal_ioprio={'journal_ioprio', 0x3d, 0x1}}, {@stripe={'stripe', 0x3d, 0x7}}, {@nolazytime}, {@grpquota}, {@noauto_da_alloc}, {@init_itable_val={'init_itable', 0x3d, 0x80}}, {@data_err_abort}, {@dioread_nolock}, {@minixdf}]}, 0x11, 0x4b8, &(0x7f0000000540)="$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") syz_mount_image$ext4(&(0x7f0000000140)='ext4\x00', &(0x7f00000005c0)='./file1\x00', 0x1018e58, &(0x7f0000000000), 0x1, 0x60f, &(0x7f0000000c40)="$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") program did not crash single: failed to extract reproducer single: executing 1 programs separately with timeout 6m0s testing program (duration=6m0s, {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$ext4-syz_mount_image$ext4 detailed listing: executing program 0: syz_mount_image$ext4(&(0x7f0000000000)='ext4\x00', &(0x7f0000000500)='./bus\x00', 0x1004508, &(0x7f0000000040)={[{@journal_ioprio={'journal_ioprio', 0x3d, 0x1}}, {@stripe={'stripe', 0x3d, 0x7}}, {@nolazytime}, {@grpquota}, {@noauto_da_alloc}, {@init_itable_val={'init_itable', 0x3d, 0x80}}, {@data_err_abort}, {@dioread_nolock}, {@minixdf}]}, 0x11, 0x4b8, &(0x7f0000000540)="$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") syz_mount_image$ext4(&(0x7f0000000140)='ext4\x00', &(0x7f00000005c0)='./file1\x00', 0x1018e58, &(0x7f0000000000), 0x1, 0x60f, &(0x7f0000000c40)="$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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=6m0s, {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(&(0x7f0000000000)='ext4\x00', &(0x7f0000000500)='./bus\x00', 0x1004508, &(0x7f0000000040)={[{@journal_ioprio={'journal_ioprio', 0x3d, 0x1}}, {@stripe={'stripe', 0x3d, 0x7}}, {@nolazytime}, {@grpquota}, {@noauto_da_alloc}, {@init_itable_val={'init_itable', 0x3d, 0x80}}, {@data_err_abort}, {@dioread_nolock}, {@minixdf}]}, 0x11, 0x4b8, &(0x7f0000000540)="$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") program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4 detailed listing: executing program 0: syz_mount_image$ext4(&(0x7f0000000140)='ext4\x00', &(0x7f00000005c0)='./file1\x00', 0x1018e58, &(0x7f0000000000), 0x1, 0x60f, &(0x7f0000000c40)="$eJzs3c9rHGUfAPDvzCZ5kzbvm/bl5cUWxYCHFqRpUotVL7b1YA8FC/Yg4qGhSWro9gdNCrYW2oIHBQURryK9+A94l969iaDePAtVpKKgkpXZnW03yWySptndJPP5wOzOPDM7z/PdyZN5np19dgIordHsIY3YE7FwJokYaVk3HI2Vo/l293+9cTabkqjVXv8liSRPa26/kD/vzB6SiMGI+OZ4xH8ry/Odu3b9/GS11nAz4uD8hcsH565dPzB7YfLc9LnpixOHXjh8ZPzFicMTGxLnzvz5xMnXnvzovbefn/m2eiCJo3G6/92pWBLHRhmN0VjIQ2xN74uII9lMwfuy1WyDEEqtkv899kfE/2MkKvWlhpGY/bCnhQM6qlaJqAEllaj/UFLNdkCzb7+2fvDpDrdKuufesUYHaHn8fY3PRmKw3jfacT9p6Rk1PtvYtQH5Z3n8fWPvZ9kUiz6H+OPB0enbgHzauXU7Ip4oij+pl21XPdIs/nRRXz+JiPGIGMjL98o6sm7dV1MnPodZsRCPEH/rcUgj4mj+nKUfX2f+o0uWux0/AOV091h+Iq+fjR+e/7K2R7P9EwXtn+GCc9d69Pr817791zzfD9bbPemSdljWZjlVvMv+pQk/fnDik3b5t7b/sinLv9kW7IZ7tyP2Lon//SzYvP2TxZ8UHP9skzNH15bHq9/9fKLdul7HX7sTsa+w//OwVZrNrXB98uDMbHV6vPFYmMdXX7/1Rbv8ex1/dvx3tIm/5finS1+XvSeX15jHl6fuXBhos2541fjTnwaSRn+zuY93Jufnr0xEDCQn801a0g+tXJbmNs19ZPHvf6a4/i/6+7+9eD9DrR2YVVx+4/z9duvWc/xbLiYv1NZYhnay+KdWP/7L6n+W9vEa8/j9zatPtVtXEH9EHv/Q4wQGAAAAAAAAJZTWr8Em6diD+TQdG2uMl/1f7Eirl+bmn525dPXiVMT++vch+9Pmle6RxnKSLU/k34dtLh9asvxcROyOiE8rQ/XlsbOXqlO9Dh4AAAAAAAAAAAAAAAAAAAA2iZ35+P/mfap/qzTG/wMl0ckbzAGbm/oP5VWv/8tu8QSUgfM/lJf6D+Wl/kN5qf9QXuo/lJf6D+Wl/kN5qf8AAAAAsC3tfvruD0lE3HppqD5lBvJ1RgTB9tZfkFa72YOCAF1X6XUBgJ55cOlfYx9Kp6j9v8yf+Y8Ddr44QA8kRYn1xkFt5cp/t/CVAAAAAAAAAAAAAEAH7NvTfvz/msYGAFuWYX9QXo8x/t9PB8AW56f/obz08YHVRvEPtlth/D8AAAAAAAAAAAAAdM1wfUrSsXws8HCk6dhYxL8jYlf0JzOz1enxiPhPRHxf6f9XtjzR60IDAAAAAAAAAAAAAAAAAADANjN37fr5yWp1+krrzF/LUrb3TPMuqF3I6+V4xFdF0v23ZSgien5QOjbT15KSRNzKjvymKNiVudgcxajP9PgfEwAAAAAAAAAAAAAAAAAAlFDL2ONiez/vcokAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAoPse3v+/czO9jhEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA2Jr+CQAA///FJUHN") program did not crash extracting C reproducer testing compiled C program (duration=6m0s, {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$ext4-syz_mount_image$ext4 program crashed: possible deadlock in dquot_commit simplifying C reproducer testing compiled C program (duration=6m0s, {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$ext4-syz_mount_image$ext4 program crashed: possible deadlock in dquot_commit testing compiled C program (duration=6m0s, {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$ext4-syz_mount_image$ext4 program crashed: possible deadlock in dquot_commit testing compiled C program (duration=6m0s, {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$ext4-syz_mount_image$ext4 program crashed: possible deadlock in dquot_commit testing compiled C program (duration=6m0s, {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$ext4-syz_mount_image$ext4 program crashed: possible deadlock in dquot_commit testing compiled C program (duration=6m0s, {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$ext4-syz_mount_image$ext4 program crashed: no output from test machine a never seen crash title: no output from test machine, ignore testing compiled C program (duration=6m0s, {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$ext4-syz_mount_image$ext4 program crashed: possible deadlock in dquot_commit testing compiled C program (duration=6m0s, {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$ext4-syz_mount_image$ext4 program crashed: possible deadlock in dquot_commit reproducing took 30m41.207461885s repro crashed as (corrupted=false): loop0: detected capacity change from 0 to 512 ====================================================== WARNING: possible circular locking dependency detected 5.15.185-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor139/4191 is trying to acquire lock: ffff0000e1c69068 (&dquot->dq_lock){+.+.}-{3:3}, at: dquot_commit+0x50/0x1c4 fs/quota/dquot.c:507 but task is already holding lock: ffff0000dee1be48 (&ei->i_data_sem/2){++++}-{3:3}, at: ext4_truncate+0x7bc/0xf94 fs/ext4/inode.c:4245 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_write+0xbc/0x12c kernel/locking/rwsem.c:1551 ext4_map_blocks+0x71c/0x167c fs/ext4/inode.c:666 ext4_getblk+0x138/0x5f0 fs/ext4/inode.c:870 ext4_bread+0x3c/0x1d4 fs/ext4/inode.c:923 ext4_quota_write+0x220/0x52c fs/ext4/super.c:6591 write_blk fs/quota/quota_tree.c:64 [inline] find_free_dqentry fs/quota/quota_tree.c:307 [inline] do_insert_tree+0xd34/0x1424 fs/quota/quota_tree.c:364 do_insert_tree+0x450/0x1424 fs/quota/quota_tree.c:366 do_insert_tree+0x450/0x1424 fs/quota/quota_tree.c:366 do_insert_tree+0x450/0x1424 fs/quota/quota_tree.c:366 dq_insert_tree fs/quota/quota_tree.c:392 [inline] qtree_write_dquot+0x2c4/0x3f8 fs/quota/quota_tree.c:411 v2_write_dquot+0xf0/0x180 fs/quota/quota_v2.c:358 dquot_acquire+0x2b0/0x510 fs/quota/dquot.c:472 ext4_acquire_dquot+0x270/0x428 fs/ext4/super.c:6200 dqget+0x658/0xcf4 fs/quota/dquot.c:988 __dquot_initialize+0x2d4/0xa80 fs/quota/dquot.c:1517 dquot_initialize+0x24/0x34 fs/quota/dquot.c:1579 ext4_process_orphan+0x5c/0x2b4 fs/ext4/orphan.c:329 ext4_orphan_cleanup+0x888/0xf8c fs/ext4/orphan.c:474 ext4_fill_super+0x7a5c/0x812c fs/ext4/super.c:4975 mount_bdev+0x264/0x358 fs/super.c:1400 ext4_mount+0x44/0x58 fs/ext4/super.c:6627 legacy_get_tree+0xd4/0x16c fs/fs_context.c:611 vfs_get_tree+0x90/0x274 fs/super.c:1530 do_new_mount+0x228/0x810 fs/namespace.c:3010 path_mount+0x5b4/0x1000 fs/namespace.c:3340 do_mount fs/namespace.c:3353 [inline] __do_sys_mount fs/namespace.c:3561 [inline] __se_sys_mount fs/namespace.c:3538 [inline] __arm64_sys_mount+0x514/0x5e4 fs/namespace.c:3538 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 -> #1 (&s->s_dquot.dqio_sem){++++}-{3:3}: down_read+0xc0/0x390 kernel/locking/rwsem.c:1498 v2_read_dquot+0x4c/0x118 fs/quota/quota_v2.c:332 dquot_acquire+0x120/0x510 fs/quota/dquot.c:463 ext4_acquire_dquot+0x270/0x428 fs/ext4/super.c:6200 dqget+0x658/0xcf4 fs/quota/dquot.c:988 __dquot_initialize+0x2d4/0xa80 fs/quota/dquot.c:1517 dquot_initialize+0x24/0x34 fs/quota/dquot.c:1579 ext4_process_orphan+0x5c/0x2b4 fs/ext4/orphan.c:329 ext4_orphan_cleanup+0x888/0xf8c fs/ext4/orphan.c:474 ext4_fill_super+0x7a5c/0x812c fs/ext4/super.c:4975 mount_bdev+0x264/0x358 fs/super.c:1400 ext4_mount+0x44/0x58 fs/ext4/super.c:6627 legacy_get_tree+0xd4/0x16c fs/fs_context.c:611 vfs_get_tree+0x90/0x274 fs/super.c:1530 do_new_mount+0x228/0x810 fs/namespace.c:3010 path_mount+0x5b4/0x1000 fs/namespace.c:3340 do_mount fs/namespace.c:3353 [inline] __do_sys_mount fs/namespace.c:3561 [inline] __se_sys_mount fs/namespace.c:3538 [inline] __arm64_sys_mount+0x514/0x5e4 fs/namespace.c:3538 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 -> #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+0x2928/0x651c kernel/locking/lockdep.c:5012 lock_acquire+0x1f4/0x620 kernel/locking/lockdep.c:5623 __mutex_lock_common+0x194/0x1edc kernel/locking/mutex.c:596 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0xac/0x11c kernel/locking/mutex.c:743 dquot_commit+0x50/0x1c4 fs/quota/dquot.c:507 ext4_write_dquot+0x1b4/0x31c fs/ext4/super.c:6180 ext4_mark_dquot_dirty+0xe8/0x140 fs/ext4/super.c:6257 mark_dquot_dirty fs/quota/dquot.c:372 [inline] mark_all_dquot_dirty+0x108/0x424 fs/quota/dquot.c:412 __dquot_free_space+0x76c/0xaa8 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:6156 [inline] ext4_free_blocks+0x1900/0x23cc fs/ext4/mballoc.c:6286 ext4_remove_blocks fs/ext4/extents.c:2523 [inline] ext4_ext_rm_leaf fs/ext4/extents.c:2689 [inline] ext4_ext_remove_space+0x1d98/0x3830 fs/ext4/extents.c:2937 ext4_ext_truncate+0x184/0x24c fs/ext4/extents.c:4471 ext4_truncate+0x9c0/0xf94 fs/ext4/inode.c:4250 ext4_evict_inode+0xbec/0x11dc fs/ext4/inode.c:289 evict+0x3c8/0x810 fs/inode.c:647 iput_final fs/inode.c:1769 [inline] iput+0x6c4/0x77c fs/inode.c:1795 ext4_process_orphan+0x240/0x2b4 fs/ext4/orphan.c:360 ext4_orphan_cleanup+0x888/0xf8c fs/ext4/orphan.c:474 ext4_fill_super+0x7a5c/0x812c fs/ext4/super.c:4975 mount_bdev+0x264/0x358 fs/super.c:1400 ext4_mount+0x44/0x58 fs/ext4/super.c:6627 legacy_get_tree+0xd4/0x16c fs/fs_context.c:611 vfs_get_tree+0x90/0x274 fs/super.c:1530 do_new_mount+0x228/0x810 fs/namespace.c:3010 path_mount+0x5b4/0x1000 fs/namespace.c:3340 do_mount fs/namespace.c:3353 [inline] __do_sys_mount fs/namespace.c:3561 [inline] __se_sys_mount fs/namespace.c:3538 [inline] __arm64_sys_mount+0x514/0x5e4 fs/namespace.c:3538 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 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-executor139/4191: #0: ffff0000c8a5a0e0 (&type->s_umount_key#26/1){+.+.}-{3:3}, at: alloc_super+0x1a8/0x824 fs/super.c:229 #1: ffff0000c8a5a650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1811 [inline] #1: ffff0000c8a5a650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1928 [inline] #1: ffff0000c8a5a650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x3d8/0x11dc fs/ext4/inode.c:243 #2: ffff0000dee1be48 (&ei->i_data_sem/2){++++}-{3:3}, at: ext4_truncate+0x7bc/0xf94 fs/ext4/inode.c:4245 #3: ffff800014448658 (dquot_srcu){....}-{0:0}, at: rcu_lock_acquire+0x10/0x4c include/linux/rcupdate.h:311 stack backtrace: CPU: 0 PID: 4191 Comm: syz-executor139 Not tainted 5.15.185-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack+0x30/0x40 lib/dump_stack.c:88 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106 dump_stack+0x1c/0x5c lib/dump_stack.c:113 print_circular_bug+0x148/0x1b0 kernel/locking/lockdep.c:2011 check_noncircular+0x240/0x2d4 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+0x2928/0x651c kernel/locking/lockdep.c:5012 lock_acquire+0x1f4/0x620 kernel/locking/lockdep.c:5623 __mutex_lock_common+0x194/0x1edc kernel/locking/mutex.c:596 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0xac/0x11c kernel/locking/mutex.c:743 dquot_commit+0x50/0x1c4 fs/quota/dquot.c:507 ext4_write_dquot+0x1b4/0x31c fs/ext4/super.c:6180 ext4_mark_dquot_dirty+0xe8/0x140 fs/ext4/super.c:6257 mark_dquot_dirty fs/quota/dquot.c:372 [inline] mark_all_dquot_dirty+0x108/0x424 fs/quota/dquot.c:412 __dquot_free_space+0x76c/0xaa8 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:6156 [inline] ext4_free_blocks+0x1900/0x23cc fs/ext4/mballoc.c:6286 ext4_remove_blocks fs/ext4/extents.c:2523 [inline] ext4_ext_rm_leaf fs/ext4/extents.c:2689 [inline] ext4_ext_remove_space+0x1d98/0x3830 fs/ext4/extents.c:2937 ext4_ext_truncate+0x184/0x24c fs/ext4/extents.c:4471 ext4_truncate+0x9c0/0xf94 fs/ext4/inode.c:4250 ext4_evict_inode+0xbec/0x11dc fs/ext4/inode.c:289 evict+0x3c8/0x810 fs/inode.c:647 iput_final fs/inode.c:1769 [inline] iput+0x6c4/0x77c fs/inode.c:1795 ext4_process_orphan+0x240/0x2b4 fs/ext4/orphan.c:360 ext4_orphan_cleanup+0x888/0xf8c fs/ext4/orphan.c:474 ext4_fill_super+0x7a5c/0x812c fs/ext4/super.c:4975 mount_bdev+0x264/0x358 fs/super.c:1400 ext4_mount+0x44/0x58 fs/ext4/super.c:6627 legacy_get_tree+0xd4/0x16c fs/fs_context.c:611 vfs_get_tree+0x90/0x274 fs/super.c:1530 do_new_mount+0x228/0x810 fs/namespace.c:3010 path_mount+0x5b4/0x1000 fs/namespace.c:3340 do_mount fs/namespace.c:3353 [inline] __do_sys_mount fs/namespace.c:3561 [inline] __se_sys_mount fs/namespace.c:3538 [inline] __arm64_sys_mount+0x514/0x5e4 fs/namespace.c:3538 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 EXT4-fs (loop0): 1 orphan inode deleted EXT4-fs (loop0): mounted filesystem without journal. Opts: journal_ioprio=0x0000000000000001,stripe=0x0000000000000007,nolazytime,grpquota,noauto_da_alloc,init_itable=0x0000000000000080,data_err=abort,dioread_nolock,minixdf,,errors=continue. Quota mode: writeback. final repro crashed as (corrupted=false): loop0: detected capacity change from 0 to 512 ====================================================== WARNING: possible circular locking dependency detected 5.15.185-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor139/4191 is trying to acquire lock: ffff0000e1c69068 (&dquot->dq_lock){+.+.}-{3:3}, at: dquot_commit+0x50/0x1c4 fs/quota/dquot.c:507 but task is already holding lock: ffff0000dee1be48 (&ei->i_data_sem/2){++++}-{3:3}, at: ext4_truncate+0x7bc/0xf94 fs/ext4/inode.c:4245 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_write+0xbc/0x12c kernel/locking/rwsem.c:1551 ext4_map_blocks+0x71c/0x167c fs/ext4/inode.c:666 ext4_getblk+0x138/0x5f0 fs/ext4/inode.c:870 ext4_bread+0x3c/0x1d4 fs/ext4/inode.c:923 ext4_quota_write+0x220/0x52c fs/ext4/super.c:6591 write_blk fs/quota/quota_tree.c:64 [inline] find_free_dqentry fs/quota/quota_tree.c:307 [inline] do_insert_tree+0xd34/0x1424 fs/quota/quota_tree.c:364 do_insert_tree+0x450/0x1424 fs/quota/quota_tree.c:366 do_insert_tree+0x450/0x1424 fs/quota/quota_tree.c:366 do_insert_tree+0x450/0x1424 fs/quota/quota_tree.c:366 dq_insert_tree fs/quota/quota_tree.c:392 [inline] qtree_write_dquot+0x2c4/0x3f8 fs/quota/quota_tree.c:411 v2_write_dquot+0xf0/0x180 fs/quota/quota_v2.c:358 dquot_acquire+0x2b0/0x510 fs/quota/dquot.c:472 ext4_acquire_dquot+0x270/0x428 fs/ext4/super.c:6200 dqget+0x658/0xcf4 fs/quota/dquot.c:988 __dquot_initialize+0x2d4/0xa80 fs/quota/dquot.c:1517 dquot_initialize+0x24/0x34 fs/quota/dquot.c:1579 ext4_process_orphan+0x5c/0x2b4 fs/ext4/orphan.c:329 ext4_orphan_cleanup+0x888/0xf8c fs/ext4/orphan.c:474 ext4_fill_super+0x7a5c/0x812c fs/ext4/super.c:4975 mount_bdev+0x264/0x358 fs/super.c:1400 ext4_mount+0x44/0x58 fs/ext4/super.c:6627 legacy_get_tree+0xd4/0x16c fs/fs_context.c:611 vfs_get_tree+0x90/0x274 fs/super.c:1530 do_new_mount+0x228/0x810 fs/namespace.c:3010 path_mount+0x5b4/0x1000 fs/namespace.c:3340 do_mount fs/namespace.c:3353 [inline] __do_sys_mount fs/namespace.c:3561 [inline] __se_sys_mount fs/namespace.c:3538 [inline] __arm64_sys_mount+0x514/0x5e4 fs/namespace.c:3538 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 -> #1 (&s->s_dquot.dqio_sem){++++}-{3:3}: down_read+0xc0/0x390 kernel/locking/rwsem.c:1498 v2_read_dquot+0x4c/0x118 fs/quota/quota_v2.c:332 dquot_acquire+0x120/0x510 fs/quota/dquot.c:463 ext4_acquire_dquot+0x270/0x428 fs/ext4/super.c:6200 dqget+0x658/0xcf4 fs/quota/dquot.c:988 __dquot_initialize+0x2d4/0xa80 fs/quota/dquot.c:1517 dquot_initialize+0x24/0x34 fs/quota/dquot.c:1579 ext4_process_orphan+0x5c/0x2b4 fs/ext4/orphan.c:329 ext4_orphan_cleanup+0x888/0xf8c fs/ext4/orphan.c:474 ext4_fill_super+0x7a5c/0x812c fs/ext4/super.c:4975 mount_bdev+0x264/0x358 fs/super.c:1400 ext4_mount+0x44/0x58 fs/ext4/super.c:6627 legacy_get_tree+0xd4/0x16c fs/fs_context.c:611 vfs_get_tree+0x90/0x274 fs/super.c:1530 do_new_mount+0x228/0x810 fs/namespace.c:3010 path_mount+0x5b4/0x1000 fs/namespace.c:3340 do_mount fs/namespace.c:3353 [inline] __do_sys_mount fs/namespace.c:3561 [inline] __se_sys_mount fs/namespace.c:3538 [inline] __arm64_sys_mount+0x514/0x5e4 fs/namespace.c:3538 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 -> #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+0x2928/0x651c kernel/locking/lockdep.c:5012 lock_acquire+0x1f4/0x620 kernel/locking/lockdep.c:5623 __mutex_lock_common+0x194/0x1edc kernel/locking/mutex.c:596 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0xac/0x11c kernel/locking/mutex.c:743 dquot_commit+0x50/0x1c4 fs/quota/dquot.c:507 ext4_write_dquot+0x1b4/0x31c fs/ext4/super.c:6180 ext4_mark_dquot_dirty+0xe8/0x140 fs/ext4/super.c:6257 mark_dquot_dirty fs/quota/dquot.c:372 [inline] mark_all_dquot_dirty+0x108/0x424 fs/quota/dquot.c:412 __dquot_free_space+0x76c/0xaa8 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:6156 [inline] ext4_free_blocks+0x1900/0x23cc fs/ext4/mballoc.c:6286 ext4_remove_blocks fs/ext4/extents.c:2523 [inline] ext4_ext_rm_leaf fs/ext4/extents.c:2689 [inline] ext4_ext_remove_space+0x1d98/0x3830 fs/ext4/extents.c:2937 ext4_ext_truncate+0x184/0x24c fs/ext4/extents.c:4471 ext4_truncate+0x9c0/0xf94 fs/ext4/inode.c:4250 ext4_evict_inode+0xbec/0x11dc fs/ext4/inode.c:289 evict+0x3c8/0x810 fs/inode.c:647 iput_final fs/inode.c:1769 [inline] iput+0x6c4/0x77c fs/inode.c:1795 ext4_process_orphan+0x240/0x2b4 fs/ext4/orphan.c:360 ext4_orphan_cleanup+0x888/0xf8c fs/ext4/orphan.c:474 ext4_fill_super+0x7a5c/0x812c fs/ext4/super.c:4975 mount_bdev+0x264/0x358 fs/super.c:1400 ext4_mount+0x44/0x58 fs/ext4/super.c:6627 legacy_get_tree+0xd4/0x16c fs/fs_context.c:611 vfs_get_tree+0x90/0x274 fs/super.c:1530 do_new_mount+0x228/0x810 fs/namespace.c:3010 path_mount+0x5b4/0x1000 fs/namespace.c:3340 do_mount fs/namespace.c:3353 [inline] __do_sys_mount fs/namespace.c:3561 [inline] __se_sys_mount fs/namespace.c:3538 [inline] __arm64_sys_mount+0x514/0x5e4 fs/namespace.c:3538 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 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-executor139/4191: #0: ffff0000c8a5a0e0 (&type->s_umount_key#26/1){+.+.}-{3:3}, at: alloc_super+0x1a8/0x824 fs/super.c:229 #1: ffff0000c8a5a650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1811 [inline] #1: ffff0000c8a5a650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1928 [inline] #1: ffff0000c8a5a650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x3d8/0x11dc fs/ext4/inode.c:243 #2: ffff0000dee1be48 (&ei->i_data_sem/2){++++}-{3:3}, at: ext4_truncate+0x7bc/0xf94 fs/ext4/inode.c:4245 #3: ffff800014448658 (dquot_srcu){....}-{0:0}, at: rcu_lock_acquire+0x10/0x4c include/linux/rcupdate.h:311 stack backtrace: CPU: 0 PID: 4191 Comm: syz-executor139 Not tainted 5.15.185-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack+0x30/0x40 lib/dump_stack.c:88 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106 dump_stack+0x1c/0x5c lib/dump_stack.c:113 print_circular_bug+0x148/0x1b0 kernel/locking/lockdep.c:2011 check_noncircular+0x240/0x2d4 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+0x2928/0x651c kernel/locking/lockdep.c:5012 lock_acquire+0x1f4/0x620 kernel/locking/lockdep.c:5623 __mutex_lock_common+0x194/0x1edc kernel/locking/mutex.c:596 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0xac/0x11c kernel/locking/mutex.c:743 dquot_commit+0x50/0x1c4 fs/quota/dquot.c:507 ext4_write_dquot+0x1b4/0x31c fs/ext4/super.c:6180 ext4_mark_dquot_dirty+0xe8/0x140 fs/ext4/super.c:6257 mark_dquot_dirty fs/quota/dquot.c:372 [inline] mark_all_dquot_dirty+0x108/0x424 fs/quota/dquot.c:412 __dquot_free_space+0x76c/0xaa8 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:6156 [inline] ext4_free_blocks+0x1900/0x23cc fs/ext4/mballoc.c:6286 ext4_remove_blocks fs/ext4/extents.c:2523 [inline] ext4_ext_rm_leaf fs/ext4/extents.c:2689 [inline] ext4_ext_remove_space+0x1d98/0x3830 fs/ext4/extents.c:2937 ext4_ext_truncate+0x184/0x24c fs/ext4/extents.c:4471 ext4_truncate+0x9c0/0xf94 fs/ext4/inode.c:4250 ext4_evict_inode+0xbec/0x11dc fs/ext4/inode.c:289 evict+0x3c8/0x810 fs/inode.c:647 iput_final fs/inode.c:1769 [inline] iput+0x6c4/0x77c fs/inode.c:1795 ext4_process_orphan+0x240/0x2b4 fs/ext4/orphan.c:360 ext4_orphan_cleanup+0x888/0xf8c fs/ext4/orphan.c:474 ext4_fill_super+0x7a5c/0x812c fs/ext4/super.c:4975 mount_bdev+0x264/0x358 fs/super.c:1400 ext4_mount+0x44/0x58 fs/ext4/super.c:6627 legacy_get_tree+0xd4/0x16c fs/fs_context.c:611 vfs_get_tree+0x90/0x274 fs/super.c:1530 do_new_mount+0x228/0x810 fs/namespace.c:3010 path_mount+0x5b4/0x1000 fs/namespace.c:3340 do_mount fs/namespace.c:3353 [inline] __do_sys_mount fs/namespace.c:3561 [inline] __se_sys_mount fs/namespace.c:3538 [inline] __arm64_sys_mount+0x514/0x5e4 fs/namespace.c:3538 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 EXT4-fs (loop0): 1 orphan inode deleted EXT4-fs (loop0): mounted filesystem without journal. Opts: journal_ioprio=0x0000000000000001,stripe=0x0000000000000007,nolazytime,grpquota,noauto_da_alloc,init_itable=0x0000000000000080,data_err=abort,dioread_nolock,minixdf,,errors=continue. Quota mode: writeback.