Extracting prog: 2m23.112355019s Minimizing prog: 2m56.883343688s Simplifying prog options: 0s Extracting C: 1m22.270358587s Simplifying C: 10m20.658189401s 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$ext4(&(0x7f0000000100)='ext4\x00', &(0x7f0000000200)='./file1\x00', 0x2000000, &(0x7f0000000280), 0x1, 0x4f6, &(0x7f00000007c0)="$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") syz_mount_image$ext4(&(0x7f0000000080)='ext4\x00', &(0x7f0000000500)='./file1\x00', 0x450b, &(0x7f0000000180)={[{@errors_remount}, {@sysvgroups}, {@dioread_lock}, {@init_itable}, {@noauto_da_alloc}, {@resgid}, {@barrier}, {@init_itable_val={'init_itable', 0x3d, 0x100}}, {@usrquota}]}, 0x12, 0x4b4, &(0x7f0000000a00)="$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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=53.178548407s, {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', 0x2000000, &(0x7f0000000280), 0x1, 0x4f6, &(0x7f00000007c0)="$eJzs3d9rXFkdAPDvvclk0zZrZlVkXXB3cVfSRTuTbNxtEGkriD4V1PoeYzIJIZNMyExqE4qm+AcIIir45JMvgn+AIP0TRCjou6gooq0+aq/MzI02yUwyNZNMd/L5wMk95/76nnPJnLl37uHeAC6sNyPiVkSMRMQ7ETGZz0/zNN8s7LXXe/L4/mIzJZFld/6WRJLP299XszwaEVfam8R4RHztyxHfTI7Gre/sri1Uq5WtvFxurG+W6zu711bXF1YqK5WN2dmZ9+euz703N53lTtXOYkTc+OKffvi9n33pxq8+863fz//l6reb1fr8x9r1jojFUwXoor3vQutY7Gseo62zCDYAI3l7CiODrgkAAL1onuN/OCI+2Tr/n4yR1tkcAAAAMEyymxPxryQiAwAAAIZWGhETkaSlfCzARKRpqdQew/vRuJxWa/XGp5dr2xtLzWURxSiky6vVynQ+VrgYhaRZnsnH2O6X3z1Uno2IVyLiB5OXWuXSYq26NOgfPwAAAOCCuPLGwev/f06mrTwAAAAwZIpdCwAAAMCwcMkPAAAAw8/1PwAAAAy1r9y+3UzZ/nu8l+7ubK/V7l5bqtTXSuvbi6XF2tZmaaVWW2k9s2/9pP1Va7XNz8bG9r1yo1JvlOs7u/Prte2NxvzqgVdgAwAAAOfolTce/i6JiL3PXWqlyJ8DCHDAHwddAaCfRgZdAWBgRgddAWBgCieuoYeAYZecsLzr4J1f978uAADA2Zj6+NH7/2P5spN/GwA+yIz1AYCLx909uLgKRgDChfeh9uSlbstPf/8/y567UgAAQF9NtFKSlvJ7gRORpqVSxMut1wIUkuXVamU6vz747WThpWZ5prVlcuKYYQAAAAAAAAAAAAAAAAAAAAAAAACgLcuSyAAAAIChFpH+OWk9zT9iavLtiYO/Dhx669dP7vzo3kKjsTUTMZb8fbI5aywiGj/O57+beSUAAAAAvADa1+n5dGbQtQEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABg2Dx5fH9xP51n3L9+ISKKneKPxnhrOh6FiLj8jyRGn9kuiYiRPsTfexARr3aKn8TTLMuKeS06xb90xvGLrUPTOX4aEVf6EB8usofN/udWp89fGm+2pp0/f6N5Oq3u/V/63/5vpEv/83KPMV579Ity1/gPIl4b7dz/7MdP2vGTOBT/rR7jf+Pru7vdlmU/jZjq+P2THIhVbqxvlus7u9dW1xdWKiuVjdnZmffnrs+9NzddXl6tVvK/HWN8/xO/fHpc+y93iV882P4jx//tHtv/70f3Hn+knS10in/1rc7fv692iZ/m332fyvPN5VP7+b12/lmv//w3rx/X/qUu7R8/of1Xe2z/O1/97h96XBUAOAf1nd21hWq1snVMZryHdc45c/PFqIZMvzLZd9r/j6fbzyk3P5LJTrP5aPShGmPP8Tntb2aQvRIAAHAW/nfSP+iaAAAAAAAAAAAAAAAAAAAAwMX1fz4hbDwiel75cMy9wTQVAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOBY/wkAAP//E77WGg==") program did not crash testing program (duration=53.178548407s, {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$ext4(&(0x7f0000000080)='ext4\x00', &(0x7f0000000500)='./file1\x00', 0x450b, &(0x7f0000000180)={[{@errors_remount}, {@sysvgroups}, {@dioread_lock}, {@init_itable}, {@noauto_da_alloc}, {@resgid}, {@barrier}, {@init_itable_val={'init_itable', 0x3d, 0x100}}, {@usrquota}]}, 0x12, 0x4b4, &(0x7f0000000a00)="$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") program did not crash extracting C reproducer testing compiled C program (duration=53.178548407s, {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=53.178548407s, {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=53.178548407s, {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$ext4-syz_mount_image$ext4 program did not crash testing compiled C program (duration=53.178548407s, {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=53.178548407s, {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=53.178548407s, {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=53.178548407s, {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 did not crash testing compiled C program (duration=53.178548407s, {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=53.178548407s, {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 17m2.924285455s repro crashed as (corrupted=false): EXT4-fs error (device loop0): __ext4_ext_dirty:202: inode #3: comm syz-executor354: mark_inode_dirty error EXT4-fs error (device loop0): ext4_acquire_dquot:6801: comm syz-executor354: Failed to acquire dquot type 0 ====================================================== WARNING: possible circular locking dependency detected 6.1.119-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor354/4815 is trying to acquire lock: ffff0000e4489768 (&dquot->dq_lock){+.+.}-{3:3}, at: dquot_commit+0x54/0x240 fs/quota/dquot.c:507 but task is already holding lock: ffff0000e45b3eb8 (&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:7171 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:6797 dqget+0x660/0xcec fs/quota/dquot.c:986 __dquot_initialize+0x344/0xc04 fs/quota/dquot.c:1515 dquot_initialize+0x24/0x34 fs/quota/dquot.c:1577 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:5534 [inline] ext4_fill_super+0x6f04/0x7570 fs/ext4/super.c:5665 get_tree_bdev+0x360/0x54c fs/super.c:1366 ext4_get_tree+0x28/0x38 fs/ext4/super.c:5695 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:6797 dqget+0x660/0xcec fs/quota/dquot.c:986 __dquot_initialize+0x344/0xc04 fs/quota/dquot.c:1515 dquot_initialize+0x24/0x34 fs/quota/dquot.c:1577 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:5534 [inline] ext4_fill_super+0x6f04/0x7570 fs/ext4/super.c:5665 get_tree_bdev+0x360/0x54c fs/super.c:1366 ext4_get_tree+0x28/0x38 fs/ext4/super.c:5695 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:6777 ext4_mark_dquot_dirty+0xe8/0x140 fs/ext4/super.c:6837 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:1940 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:701 iput_final fs/inode.c:1830 [inline] iput+0x7c0/0x8a4 fs/inode.c:1856 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:5534 [inline] ext4_fill_super+0x6f04/0x7570 fs/ext4/super.c:5665 get_tree_bdev+0x360/0x54c fs/super.c:1366 ext4_get_tree+0x28/0x38 fs/ext4/super.c:5695 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-executor354/4815: #0: ffff0000dac060e0 (&type->s_umount_key#26/1){+.+.}-{3:3}, at: alloc_super+0x1b4/0x824 fs/super.c:228 #1: ffff0000dac06650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1891 [inline] #1: ffff0000dac06650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:2013 [inline] #1: ffff0000dac06650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x408/0x12cc fs/ext4/inode.c:240 #2: ffff0000e45b3eb8 (&ei->i_data_sem/2){++++}-{3:3}, at: ext4_truncate+0x7e0/0x1178 fs/ext4/inode.c:4283 #3: ffff800015d88ac8 (dquot_srcu){....}-{0:0}, at: rcu_lock_acquire+0x10/0x4c include/linux/rcupdate.h:349 stack backtrace: CPU: 0 PID: 4815 Comm: syz-executor354 Not tainted 6.1.119-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/0x58 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:6777 ext4_mark_dquot_dirty+0xe8/0x140 fs/ext4/super.c:6837 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:1940 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:701 iput_final fs/inode.c:1830 [inline] iput+0x7c0/0x8a4 fs/inode.c:1856 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:5534 [inline] ext4_fill_super+0x6f04/0x7570 fs/ext4/super.c:5665 get_tree_bdev+0x360/0x54c fs/super.c:1366 ext4_get_tree+0x28/0x38 fs/ext4/super.c:5695 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_ext_dirty:202: inode #3: comm syz-executor354: mark_inode_dirty error EXT4-fs error (device loop0): ext4_acquire_dquot:6801: comm syz-executor354: Failed to acquire dquot type 0 ====================================================== WARNING: possible circular locking dependency detected 6.1.119-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor354/4815 is trying to acquire lock: ffff0000e4489768 (&dquot->dq_lock){+.+.}-{3:3}, at: dquot_commit+0x54/0x240 fs/quota/dquot.c:507 but task is already holding lock: ffff0000e45b3eb8 (&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:7171 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:6797 dqget+0x660/0xcec fs/quota/dquot.c:986 __dquot_initialize+0x344/0xc04 fs/quota/dquot.c:1515 dquot_initialize+0x24/0x34 fs/quota/dquot.c:1577 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:5534 [inline] ext4_fill_super+0x6f04/0x7570 fs/ext4/super.c:5665 get_tree_bdev+0x360/0x54c fs/super.c:1366 ext4_get_tree+0x28/0x38 fs/ext4/super.c:5695 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:6797 dqget+0x660/0xcec fs/quota/dquot.c:986 __dquot_initialize+0x344/0xc04 fs/quota/dquot.c:1515 dquot_initialize+0x24/0x34 fs/quota/dquot.c:1577 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:5534 [inline] ext4_fill_super+0x6f04/0x7570 fs/ext4/super.c:5665 get_tree_bdev+0x360/0x54c fs/super.c:1366 ext4_get_tree+0x28/0x38 fs/ext4/super.c:5695 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:6777 ext4_mark_dquot_dirty+0xe8/0x140 fs/ext4/super.c:6837 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:1940 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:701 iput_final fs/inode.c:1830 [inline] iput+0x7c0/0x8a4 fs/inode.c:1856 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:5534 [inline] ext4_fill_super+0x6f04/0x7570 fs/ext4/super.c:5665 get_tree_bdev+0x360/0x54c fs/super.c:1366 ext4_get_tree+0x28/0x38 fs/ext4/super.c:5695 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-executor354/4815: #0: ffff0000dac060e0 (&type->s_umount_key#26/1){+.+.}-{3:3}, at: alloc_super+0x1b4/0x824 fs/super.c:228 #1: ffff0000dac06650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1891 [inline] #1: ffff0000dac06650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:2013 [inline] #1: ffff0000dac06650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x408/0x12cc fs/ext4/inode.c:240 #2: ffff0000e45b3eb8 (&ei->i_data_sem/2){++++}-{3:3}, at: ext4_truncate+0x7e0/0x1178 fs/ext4/inode.c:4283 #3: ffff800015d88ac8 (dquot_srcu){....}-{0:0}, at: rcu_lock_acquire+0x10/0x4c include/linux/rcupdate.h:349 stack backtrace: CPU: 0 PID: 4815 Comm: syz-executor354 Not tainted 6.1.119-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/0x58 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:6777 ext4_mark_dquot_dirty+0xe8/0x140 fs/ext4/super.c:6837 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:1940 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:701 iput_final fs/inode.c:1830 [inline] iput+0x7c0/0x8a4 fs/inode.c:1856 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:5534 [inline] ext4_fill_super+0x6f04/0x7570 fs/ext4/super.c:5665 get_tree_bdev+0x360/0x54c fs/super.c:1366 ext4_get_tree+0x28/0x38 fs/ext4/super.c:5695 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