====================================================== WARNING: possible circular locking dependency detected 5.19.0-next-20220812 #1 Not tainted ------------------------------------------------------ syz-executor.3/51267 is trying to acquire lock: ffff88800fe24170 (&journal->j_barrier){+.+.}-{3:3}, at: jbd2_journal_lock_updates+0x15e/0x310 but task is already holding lock: ffff88800fe22bd0 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_change_inode_journal_flag+0x177/0x530 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&sbi->s_writepages_rwsem){++++}-{0:0}: percpu_down_write+0x4d/0x3d0 ext4_ind_migrate+0x237/0x830 ext4_fileattr_set+0x1434/0x18a0 vfs_fileattr_set+0x77c/0xb80 do_vfs_ioctl+0xfc2/0x1610 __x64_sys_ioctl+0x10c/0x210 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> #2 (&sb->s_type->i_mutex_key#6){++++}-{3:3}: down_read+0x98/0x450 ext4_bmap+0x4e/0x470 bmap+0xac/0x120 jbd2_journal_bmap+0xa8/0x180 jbd2_journal_flush+0x853/0xc00 __ext4_ioctl+0x9e9/0x4090 __x64_sys_ioctl+0x19a/0x210 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> #1 (&journal->j_checkpoint_mutex){+.+.}-{3:3}: mutex_lock_io_nested+0x148/0x1310 jbd2_journal_flush+0x19a/0xc00 __ext4_ioctl+0x9e9/0x4090 __x64_sys_ioctl+0x19a/0x210 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> #0 (&journal->j_barrier){+.+.}-{3:3}: __lock_acquire+0x2a02/0x5e70 lock_acquire+0x1a2/0x530 __mutex_lock+0x136/0x14d0 jbd2_journal_lock_updates+0x15e/0x310 ext4_change_inode_journal_flag+0x17f/0x530 ext4_fileattr_set+0x140d/0x18a0 vfs_fileattr_set+0x77c/0xb80 do_vfs_ioctl+0xfc2/0x1610 __x64_sys_ioctl+0x10c/0x210 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd other info that might help us debug this: Chain exists of: &journal->j_barrier --> &sb->s_type->i_mutex_key#6 --> &sbi->s_writepages_rwsem Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&sbi->s_writepages_rwsem); lock(&sb->s_type->i_mutex_key#6); lock(&sbi->s_writepages_rwsem); lock(&journal->j_barrier); *** DEADLOCK *** 4 locks held by syz-executor.3/51267: #0: ffff88800fe20438 (sb_writers#3){.+.+}-{0:0}, at: do_vfs_ioctl+0xf87/0x1610 #1: ffff88804b0bf150 (&sb->s_type->i_mutex_key#6){++++}-{3:3}, at: vfs_fileattr_set+0x148/0xb80 #2: ffff88804b0bf2f0 (mapping.invalidate_lock){++++}-{3:3}, at: ext4_change_inode_journal_flag+0x11e/0x530 #3: ffff88800fe22bd0 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_change_inode_journal_flag+0x177/0x530 stack backtrace: CPU: 0 PID: 51267 Comm: syz-executor.3 Not tainted 5.19.0-next-20220812 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 Call Trace: dump_stack_lvl+0x8b/0xb3 check_noncircular+0x263/0x2e0 __lock_acquire+0x2a02/0x5e70 lock_acquire+0x1a2/0x530 __mutex_lock+0x136/0x14d0 jbd2_journal_lock_updates+0x15e/0x310 ext4_change_inode_journal_flag+0x17f/0x530 ext4_fileattr_set+0x140d/0x18a0 vfs_fileattr_set+0x77c/0xb80 do_vfs_ioctl+0xfc2/0x1610 __x64_sys_ioctl+0x10c/0x210 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fdf3b881b19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fdf38df7188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fdf3b994f60 RCX: 00007fdf3b881b19 RDX: 0000000020000080 RSI: 0000000040086602 RDI: 0000000000000004 RBP: 00007fdf3b8dbf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdf718ffef R14: 00007fdf38df7300 R15: 0000000000022000 loop5: detected capacity change from 0 to 128 loop5: loop5: detected capacity change from 0 to 128 loop5: loop5: detected capacity change from 0 to 128 loop5: sg_write: data in/out 524252/251 bytes for SCSI command 0x0-- guessing data in; program syz-executor.4 not setting count and/or reply_len properly loop5: detected capacity change from 0 to 128 loop5: loop5: detected capacity change from 0 to 128 loop5: loop5: detected capacity change from 0 to 128 loop5: sg_write: data in/out 524252/251 bytes for SCSI command 0x0-- guessing data in; program syz-executor.4 not setting count and/or reply_len properly sg_write: data in/out 524252/251 bytes for SCSI command 0x0-- guessing data in; program syz-executor.3 not setting count and/or reply_len properly loop5: detected capacity change from 0 to 128 loop5: sg_write: data in/out 524252/251 bytes for SCSI command 0x0-- guessing data in; program syz-executor.4 not setting count and/or reply_len properly loop5: detected capacity change from 0 to 128 loop5: sg_write: data in/out 524252/251 bytes for SCSI command 0x0-- guessing data in; program syz-executor.4 not setting count and/or reply_len properly sg_write: data in/out 524252/251 bytes for SCSI command 0x0-- guessing data in; program syz-executor.3 not setting count and/or reply_len properly loop5: detected capacity change from 0 to 128 loop5: loop5: detected capacity change from 0 to 128 loop5: sg_write: data in/out 524252/251 bytes for SCSI command 0x0-- guessing data in; program syz-executor.3 not setting count and/or reply_len properly loop5: detected capacity change from 0 to 128 loop5: loop5: detected capacity change from 0 to 128 loop5: loop5: detected capacity change from 0 to 128 loop5: loop5: detected capacity change from 0 to 128 loop5: loop5: detected capacity change from 0 to 128 loop5: loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (66046) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (77822) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (196606) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (196606) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (327678) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (328958) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (328958) FAT-fs (loop5): Can't find a valid FAT filesystem loop3: detected capacity change from 0 to 1 loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (331518) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 FAT-fs (loop3): Directory bread(block 5) failed FAT-fs (loop3): Directory bread(block 6) failed FAT-fs (loop3): Directory bread(block 7) failed FAT-fs (loop3): Directory bread(block 8) failed FAT-fs (loop3): Directory bread(block 9) failed FAT-fs (loop3): Directory bread(block 10) failed FAT-fs (loop3): Directory bread(block 11) failed loop5: FAT-fs (loop5): count of clusters too big (331518) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 loop3: detected capacity change from 0 to 1 loop5: FAT-fs (loop5): count of clusters too big (393214) FAT-fs (loop5): Can't find a valid FAT filesystem FAT-fs (loop3): Directory bread(block 5) failed FAT-fs (loop3): Directory bread(block 6) failed FAT-fs (loop3): Directory bread(block 7) failed FAT-fs (loop3): Directory bread(block 8) failed FAT-fs (loop3): Directory bread(block 9) failed loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop3): Directory bread(block 10) failed FAT-fs (loop3): Directory bread(block 11) failed FAT-fs (loop5): count of clusters too big (393214) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 loop5: loop3: detected capacity change from 0 to 1 FAT-fs (loop5): count of clusters too big (458750) FAT-fs (loop5): Can't find a valid FAT filesystem FAT-fs (loop3): Directory bread(block 5) failed FAT-fs (loop3): Directory bread(block 6) failed FAT-fs (loop3): Directory bread(block 7) failed FAT-fs (loop3): Directory bread(block 8) failed FAT-fs (loop3): Directory bread(block 9) failed FAT-fs (loop3): Directory bread(block 10) failed loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (458750) FAT-fs (loop5): Can't find a valid FAT filesystem FAT-fs (loop3): Directory bread(block 11) failed blktrace: Concurrent blktraces are not allowed on sg0 loop5: detected capacity change from 0 to 128 loop3: detected capacity change from 0 to 1 loop5: FAT-fs (loop5): count of clusters too big (589822) FAT-fs (loop5): Can't find a valid FAT filesystem FAT-fs (loop3): Directory bread(block 5) failed FAT-fs (loop3): Directory bread(block 6) failed FAT-fs (loop3): Directory bread(block 7) failed loop5: detected capacity change from 0 to 128 FAT-fs (loop3): Directory bread(block 8) failed FAT-fs (loop3): Directory bread(block 9) failed loop5: FAT-fs (loop3): Directory bread(block 10) failed FAT-fs (loop5): count of clusters too big (589822) FAT-fs (loop5): Can't find a valid FAT filesystem FAT-fs (loop3): Directory bread(block 11) failed loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (655358) FAT-fs (loop5): Can't find a valid FAT filesystem blktrace: Concurrent blktraces are not allowed on sg0 loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (655358) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (720894) FAT-fs (loop5): Can't find a valid FAT filesystem blktrace: Concurrent blktraces are not allowed on sg0 loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (720894) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (851966) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (851966) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (864254) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (864254) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (917502) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (917502) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (983038) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (984318) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (1056766) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (1257470) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (1257470) FAT-fs (loop5): Can't find a valid FAT filesystem EXT4-fs: Invalid commit interval -2147483648, must be smaller than 2147483 EXT4-fs: Invalid commit interval -2147483648, must be smaller than 2147483 loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (1572862) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (2097150) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (2097150) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (2101246) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (2101246) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (2228222) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (2228222) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 FAT-fs (loop5): count of clusters too big (2437118) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (3080190) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (3145982) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (3145982) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (3149054) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (3150590) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (3159038) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (3159038) FAT-fs (loop5): Can't find a valid FAT filesystem loop3: detected capacity change from 0 to 222 loop5: detected capacity change from 0 to 128 loop3: detected capacity change from 0 to 222 loop5: FAT-fs (loop5): count of clusters too big (3187710) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (3187710) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (3187966) FAT-fs (loop5): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 128 loop5: FAT-fs (loop5): count of clusters too big (3420158) FAT-fs (loop5): Can't find a valid FAT filesystem