====================================================== WARNING: possible circular locking dependency detected 6.10.0-rc4-syzkaller-00283-g563a50672d8a #0 Not tainted ------------------------------------------------------ syz-executor.3/9036 is trying to acquire lock: ffff88804cf91448 (&jfs_ip->commit_mutex/1){+.+.}-{3:3}, at: jfs_rename+0x602/0x19d0 fs/jfs/namei.c:1163 but task is already holding lock: ffff88804cff3008 (&jfs_ip->commit_mutex){+.+.}-{3:3}, at: jfs_rename+0x5e6/0x19d0 fs/jfs/namei.c:1162 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #5 (&jfs_ip->commit_mutex){+.+.}-{3:3}: __mutex_lock_common kernel/locking/mutex.c:608 [inline] __mutex_lock+0x175/0x9c0 kernel/locking/mutex.c:752 diNewIAG fs/jfs/jfs_imap.c:2519 [inline] diAllocExt fs/jfs/jfs_imap.c:1902 [inline] diAllocAG+0xc59/0x2300 fs/jfs/jfs_imap.c:1666 diAlloc+0x8f7/0x1a70 fs/jfs/jfs_imap.c:1587 ialloc+0x84/0x9e0 fs/jfs/jfs_inode.c:56 jfs_mkdir+0x244/0xb30 fs/jfs/namei.c:225 vfs_mkdir+0x57d/0x860 fs/namei.c:4131 do_mkdirat+0x301/0x3a0 fs/namei.c:4154 __do_sys_mkdirat fs/namei.c:4169 [inline] __se_sys_mkdirat fs/namei.c:4167 [inline] __ia32_sys_mkdirat+0x84/0xb0 fs/namei.c:4167 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e -> #4 (&jfs_ip->rdwrlock/1){++++}-{3:3}: down_read_nested+0x9e/0x330 kernel/locking/rwsem.c:1651 diAlloc+0x3ea/0x1a70 fs/jfs/jfs_imap.c:1385 ialloc+0x84/0x9e0 fs/jfs/jfs_inode.c:56 jfs_create+0x23e/0xb40 fs/jfs/namei.c:92 lookup_open.isra.0+0x10a1/0x13c0 fs/namei.c:3505 open_last_lookups fs/namei.c:3574 [inline] path_openat+0x92f/0x29f0 fs/namei.c:3804 do_filp_open+0x1dc/0x430 fs/namei.c:3834 do_sys_openat2+0x17a/0x1e0 fs/open.c:1405 do_sys_open fs/open.c:1420 [inline] __do_compat_sys_openat fs/open.c:1480 [inline] __se_compat_sys_openat fs/open.c:1478 [inline] __ia32_compat_sys_openat+0x16e/0x210 fs/open.c:1478 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e -> #3 (&(imap->im_aglock[index])){+.+.}-{3:3}: __mutex_lock_common kernel/locking/mutex.c:608 [inline] __mutex_lock+0x175/0x9c0 kernel/locking/mutex.c:752 diFree+0x2ff/0x2770 fs/jfs/jfs_imap.c:886 jfs_evict_inode+0x3d4/0x4b0 fs/jfs/inode.c:156 evict+0x2ed/0x6c0 fs/inode.c:667 iput_final fs/inode.c:1741 [inline] iput.part.0+0x5a8/0x7f0 fs/inode.c:1767 iput+0x5c/0x80 fs/inode.c:1757 dentry_unlink_inode+0x295/0x480 fs/dcache.c:400 __dentry_kill+0x1d0/0x600 fs/dcache.c:603 shrink_kill fs/dcache.c:1048 [inline] shrink_dentry_list+0x140/0x5d0 fs/dcache.c:1075 prune_dcache_sb+0xeb/0x150 fs/dcache.c:1156 super_cache_scan+0x32a/0x550 fs/super.c:221 do_shrink_slab+0x44f/0x11c0 mm/shrinker.c:435 shrink_slab_memcg mm/shrinker.c:548 [inline] shrink_slab+0xa87/0x1310 mm/shrinker.c:626 shrink_one+0x493/0x7c0 mm/vmscan.c:4790 shrink_many mm/vmscan.c:4851 [inline] lru_gen_shrink_node+0x89f/0x1750 mm/vmscan.c:4951 shrink_node mm/vmscan.c:5910 [inline] kswapd_shrink_node mm/vmscan.c:6720 [inline] balance_pgdat+0x1105/0x1970 mm/vmscan.c:6911 kswapd+0x5ea/0xbf0 mm/vmscan.c:7180 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 -> #2 (fs_reclaim){+.+.}-{0:0}: __fs_reclaim_acquire mm/page_alloc.c:3801 [inline] fs_reclaim_acquire+0x102/0x160 mm/page_alloc.c:3815 might_alloc include/linux/sched/mm.h:334 [inline] prepare_alloc_pages.constprop.0+0x155/0x560 mm/page_alloc.c:4449 __alloc_pages_noprof+0x194/0x2460 mm/page_alloc.c:4667 __alloc_pages_node_noprof include/linux/gfp.h:269 [inline] alloc_pages_node_noprof include/linux/gfp.h:296 [inline] __kmalloc_large_node+0x7f/0x1a0 mm/slub.c:4067 __do_kmalloc_node mm/slub.c:4110 [inline] __kmalloc_noprof.cold+0xc/0x61 mm/slub.c:4135 kmalloc_noprof include/linux/slab.h:664 [inline] ea_get+0x21f/0x12c0 fs/jfs/xattr.c:487 __jfs_setxattr+0x1ed/0xfb0 fs/jfs/xattr.c:720 __jfs_xattr_set+0xc6/0x150 fs/jfs/xattr.c:919 __vfs_setxattr+0x173/0x1e0 fs/xattr.c:200 __vfs_setxattr_noperm+0x127/0x660 fs/xattr.c:234 __vfs_setxattr_locked+0x182/0x260 fs/xattr.c:295 vfs_setxattr+0x146/0x350 fs/xattr.c:321 do_setxattr+0x146/0x170 fs/xattr.c:629 setxattr+0x15d/0x180 fs/xattr.c:652 path_setxattr+0x179/0x1e0 fs/xattr.c:671 __do_sys_lsetxattr fs/xattr.c:694 [inline] __se_sys_lsetxattr fs/xattr.c:690 [inline] __ia32_sys_lsetxattr+0xbd/0x160 fs/xattr.c:690 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e -> #1 (&jfs_ip->xattr_sem){++++}-{3:3}: down_read+0x9a/0x330 kernel/locking/rwsem.c:1526 __jfs_getxattr+0xee/0x360 fs/jfs/xattr.c:807 jfs_get_acl+0x7c/0x170 fs/jfs/acl.c:38 __get_acl+0x378/0x4e0 fs/posix_acl.c:159 get_inode_acl fs/posix_acl.c:184 [inline] posix_acl_create+0x14c/0x5f0 fs/posix_acl.c:647 jfs_init_acl+0x9a/0x3a0 fs/jfs/acl.c:135 jfs_create+0x2d9/0xb40 fs/jfs/namei.c:103 lookup_open.isra.0+0x10a1/0x13c0 fs/namei.c:3505 open_last_lookups fs/namei.c:3574 [inline] path_openat+0x92f/0x29f0 fs/namei.c:3804 do_filp_open+0x1dc/0x430 fs/namei.c:3834 do_sys_openat2+0x17a/0x1e0 fs/open.c:1405 do_sys_open fs/open.c:1420 [inline] __do_compat_sys_openat fs/open.c:1480 [inline] __se_compat_sys_openat fs/open.c:1478 [inline] __ia32_compat_sys_openat+0x16e/0x210 fs/open.c:1478 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e -> #0 (&jfs_ip->commit_mutex/1){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x2478/0x3b30 kernel/locking/lockdep.c:5137 lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5719 __mutex_lock_common kernel/locking/mutex.c:608 [inline] __mutex_lock+0x175/0x9c0 kernel/locking/mutex.c:752 jfs_rename+0x602/0x19d0 fs/jfs/namei.c:1163 vfs_rename+0xf84/0x20a0 fs/namei.c:4887 do_renameat2+0xc54/0xdc0 fs/namei.c:5044 __do_sys_renameat2 fs/namei.c:5078 [inline] __se_sys_renameat2 fs/namei.c:5075 [inline] __ia32_sys_renameat2+0xeb/0x130 fs/namei.c:5075 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e other info that might help us debug this: Chain exists of: &jfs_ip->commit_mutex/1 --> &jfs_ip->rdwrlock/1 --> &jfs_ip->commit_mutex Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&jfs_ip->commit_mutex); lock(&jfs_ip->rdwrlock/1); lock(&jfs_ip->commit_mutex); lock(&jfs_ip->commit_mutex/1); *** DEADLOCK *** 8 locks held by syz-executor.3/9036: #0: ffff88802699a420 (sb_writers#18){.+.+}-{0:0}, at: do_renameat2+0x3d6/0xdc0 fs/namei.c:4974 #1: ffff88802699a730 (&type->s_vfs_rename_key#6){+.+.}-{3:3}, at: lock_rename fs/namei.c:3078 [inline] #1: ffff88802699a730 (&type->s_vfs_rename_key#6){+.+.}-{3:3}, at: do_renameat2+0x4ef/0xdc0 fs/namei.c:4979 #2: ffff88804cff33c0 (&type->i_mutex_dir_key#12/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:826 [inline] #2: ffff88804cff33c0 (&type->i_mutex_dir_key#12/1){+.+.}-{3:3}, at: lock_two_directories+0x162/0x2d0 fs/namei.c:3054 #3: ffff88804cf90580 (&type->i_mutex_dir_key#12/5){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:826 [inline] #3: ffff88804cf90580 (&type->i_mutex_dir_key#12/5){+.+.}-{3:3}, at: lock_two_directories+0x199/0x2d0 fs/namei.c:3055 #4: ffff88804cf91800 (&sb->s_type->i_mutex_key#39){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:791 [inline] #4: ffff88804cf91800 (&sb->s_type->i_mutex_key#39){+.+.}-{3:3}, at: lock_two_nondirectories+0x195/0x200 fs/inode.c:1111 #5: ffff8880625f0580 (&sb->s_type->i_mutex_key#39/4){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:826 [inline] #5: ffff8880625f0580 (&sb->s_type->i_mutex_key#39/4){+.+.}-{3:3}, at: lock_two_nondirectories+0xed/0x200 fs/inode.c:1113 #6: ffff8880625f0138 (&jfs_ip->rdwrlock#2){++++}-{3:3}, at: jfs_rename+0xf08/0x19d0 fs/jfs/namei.c:1144 #7: ffff88804cff3008 (&jfs_ip->commit_mutex){+.+.}-{3:3}, at: jfs_rename+0x5e6/0x19d0 fs/jfs/namei.c:1162 stack backtrace: CPU: 1 PID: 9036 Comm: syz-executor.3 Not tainted 6.10.0-rc4-syzkaller-00283-g563a50672d8a #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114 check_noncircular+0x31a/0x400 kernel/locking/lockdep.c:2187 check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x2478/0x3b30 kernel/locking/lockdep.c:5137 lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5719 __mutex_lock_common kernel/locking/mutex.c:608 [inline] __mutex_lock+0x175/0x9c0 kernel/locking/mutex.c:752 jfs_rename+0x602/0x19d0 fs/jfs/namei.c:1163 vfs_rename+0xf84/0x20a0 fs/namei.c:4887 do_renameat2+0xc54/0xdc0 fs/namei.c:5044 __do_sys_renameat2 fs/namei.c:5078 [inline] __se_sys_renameat2 fs/namei.c:5075 [inline] __ia32_sys_renameat2+0xeb/0x130 fs/namei.c:5075 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf7351579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f5f225ac EFLAGS: 00000292 ORIG_RAX: 0000000000000161 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000020000340 RDX: 0000000000000005 RSI: 00000000200003c0 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 find_entry called with index = 0 read_mapping_page failed! ERROR: (device loop3): txAbort: ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 10 06 adc %al,(%rsi) 2: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 6: 10 07 adc %al,(%rdi) 8: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi c: 10 08 adc %cl,(%rax) e: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1e: 00 51 52 add %dl,0x52(%rcx) 21: 55 push %rbp 22: 89 e5 mov %esp,%ebp 24: 0f 34 sysenter 26: cd 80 int $0x80 * 28: 5d pop %rbp <-- trapping instruction 29: 5a pop %rdx 2a: 59 pop %rcx 2b: c3 ret 2c: 90 nop 2d: 90 nop 2e: 90 nop 2f: 90 nop 30: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 37: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi