loop0: detected capacity change from 0 to 32768 (syz.0.0,5320,0):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0xb3775c19, computed 0x2dd1c265. Applying ECC. (syz.0.0,5320,0):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0xb3775c19, computed 0x2dd1c265. Applying ECC. JBD2: Ignoring recovery information on journal ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.0.0/5320 is trying to acquire lock: ffff888047a73480 (&ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1028 [inline] ffff888047a73480 (&ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_xattr_set+0xba7/0x13e0 fs/ocfs2/xattr.c:3653 but task is already holding lock: ffff8880479431b8 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_xattr_set+0x475/0x13e0 fs/ocfs2/xattr.c:3614 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&oi->ip_xattr_sem){++++}-{4:4}: down_read+0x47/0x2e0 kernel/locking/rwsem.c:1537 ocfs2_init_acl+0x2fd/0x7e0 fs/ocfs2/acl.c:367 ocfs2_mknod+0x1679/0x2290 fs/ocfs2/namei.c:414 ocfs2_create+0x195/0x490 fs/ocfs2/namei.c:677 lookup_open fs/namei.c:4483 [inline] open_last_lookups fs/namei.c:4583 [inline] path_openat+0x1395/0x3860 fs/namei.c:4827 do_file_open+0x23e/0x4a0 fs/namei.c:4859 do_sys_openat2+0x113/0x200 fs/open.c:1366 do_sys_open fs/open.c:1372 [inline] __do_sys_openat fs/open.c:1388 [inline] __se_sys_openat fs/open.c:1383 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1383 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (jbd2_handle#2){++++}-{0:0}: jbd2_journal_lock_updates+0xab/0x370 fs/jbd2/transaction.c:861 __ocfs2_flush_truncate_log+0x2b8/0x12f0 fs/ocfs2/alloc.c:6037 ocfs2_flush_truncate_log fs/ocfs2/alloc.c:6084 [inline] ocfs2_try_to_free_truncate_log+0x1ac/0x360 fs/ocfs2/alloc.c:6143 ocfs2_reserve_clusters_with_limit+0x48d/0xc20 fs/ocfs2/suballoc.c:1255 ocfs2_reserve_clusters fs/ocfs2/suballoc.c:1298 [inline] ocfs2_lock_allocators+0x2d8/0x600 fs/ocfs2/suballoc.c:3073 ocfs2_write_begin_nolock+0x1b3b/0x41e0 fs/ocfs2/aops.c:1718 ocfs2_write_begin+0x1c5/0x320 fs/ocfs2/aops.c:1883 generic_perform_write+0x2e2/0x8f0 mm/filemap.c:4314 ocfs2_file_write_iter+0x1663/0x1ed0 fs/ocfs2/file.c:2476 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #0 (&ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE]){+.+.}-{4:4}: check_prev_add kernel/locking/lockdep.c:3165 [inline] check_prevs_add kernel/locking/lockdep.c:3284 [inline] validate_chain kernel/locking/lockdep.c:3908 [inline] __lock_acquire+0x15a5/0x2cf0 kernel/locking/lockdep.c:5237 lock_acquire+0xf0/0x2e0 kernel/locking/lockdep.c:5868 down_write+0x96/0x200 kernel/locking/rwsem.c:1590 inode_lock include/linux/fs.h:1028 [inline] ocfs2_xattr_set+0xba7/0x13e0 fs/ocfs2/xattr.c:3653 ocfs2_set_acl+0x701/0x7b0 fs/ocfs2/acl.c:255 ocfs2_iop_set_acl+0x1b1/0x2b0 fs/ocfs2/acl.c:287 set_posix_acl fs/posix_acl.c:955 [inline] vfs_set_acl+0x8ff/0xc00 fs/posix_acl.c:1134 do_set_acl+0xf5/0x190 fs/posix_acl.c:1279 do_setxattr fs/xattr.c:633 [inline] filename_setxattr+0x305/0x630 fs/xattr.c:664 path_setxattrat+0x3eb/0x440 fs/xattr.c:708 __do_sys_setxattr fs/xattr.c:742 [inline] __se_sys_setxattr fs/xattr.c:738 [inline] __x64_sys_setxattr+0xbc/0xe0 fs/xattr.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f other info that might help us debug this: Chain exists of: &ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE] --> jbd2_handle#2 --> &oi->ip_xattr_sem Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&oi->ip_xattr_sem); lock(jbd2_handle#2); lock(&oi->ip_xattr_sem); lock(&ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE]); *** DEADLOCK *** 3 locks held by syz.0.0/5320: #0: ffff88801f730420 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:493 #1: ffff888047943480 (&type->i_mutex_dir_key#8){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1028 [inline] #1: ffff888047943480 (&type->i_mutex_dir_key#8){+.+.}-{4:4}, at: vfs_set_acl+0x3af/0xc00 fs/posix_acl.c:1115 #2: ffff8880479431b8 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_xattr_set+0x475/0x13e0 fs/ocfs2/xattr.c:3614 stack backtrace: CPU: 0 UID: 0 PID: 5320 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 print_circular_bug+0x2e1/0x300 kernel/locking/lockdep.c:2043 check_noncircular+0x12e/0x150 kernel/locking/lockdep.c:2175 check_prev_add kernel/locking/lockdep.c:3165 [inline] check_prevs_add kernel/locking/lockdep.c:3284 [inline] validate_chain kernel/locking/lockdep.c:3908 [inline] __lock_acquire+0x15a5/0x2cf0 kernel/locking/lockdep.c:5237 lock_acquire+0xf0/0x2e0 kernel/locking/lockdep.c:5868 down_write+0x96/0x200 kernel/locking/rwsem.c:1590 inode_lock include/linux/fs.h:1028 [inline] ocfs2_xattr_set+0xba7/0x13e0 fs/ocfs2/xattr.c:3653 ocfs2_set_acl+0x701/0x7b0 fs/ocfs2/acl.c:255 ocfs2_iop_set_acl+0x1b1/0x2b0 fs/ocfs2/acl.c:287 set_posix_acl fs/posix_acl.c:955 [inline] vfs_set_acl+0x8ff/0xc00 fs/posix_acl.c:1134 do_set_acl+0xf5/0x190 fs/posix_acl.c:1279 do_setxattr fs/xattr.c:633 [inline] filename_setxattr+0x305/0x630 fs/xattr.c:664 path_setxattrat+0x3eb/0x440 fs/xattr.c:708 __do_sys_setxattr fs/xattr.c:742 [inline] __se_sys_setxattr fs/xattr.c:738 [inline] __x64_sys_setxattr+0xbc/0xe0 fs/xattr.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa35779c799 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa35866b028 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc RAX: ffffffffffffffda RBX: 00007fa357a15fa0 RCX: 00007fa35779c799 RDX: 00002000000003c0 RSI: 0000200000002a40 RDI: 0000200000002a00 RBP: 00007fa357832bd9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000064 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fa357a16038 R14: 00007fa357a15fa0 R15: 00007ffd190f2cd8