Date | Name | Commit | Repro | Result |
---|---|---|---|---|
2024/11/07 | upstream (ToT) | ff7afaeca1a1 | C | [report] possible deadlock in ext4_xattr_inode_lookup_create |
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Date | Name | Commit | Repro | Result |
---|---|---|---|---|
2024/11/07 | upstream (ToT) | ff7afaeca1a1 | C | [report] possible deadlock in ext4_xattr_inode_lookup_create |
Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
---|---|---|---|---|---|---|---|---|---|
upstream | possible deadlock in ext4_xattr_inode_lookup_create ext4 | C | done | 28 | 6d19h | 65d | 0/28 | upstream: reported C repro on 2024/09/28 07:43 |
EXT4-fs (loop0): encrypted files will use data=ordered instead of data journaling mode EXT4-fs (loop0): 1 truncate cleaned up ====================================================== WARNING: possible circular locking dependency detected 6.1.115-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor193/4373 is trying to acquire lock: ffff888071bbb628 (&ea_inode->i_rwsem#8/1){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] ffff888071bbb628 (&ea_inode->i_rwsem#8/1){+.+.}-{3:3}, at: ext4_xattr_inode_create fs/ext4/xattr.c:1465 [inline] ffff888071bbb628 (&ea_inode->i_rwsem#8/1){+.+.}-{3:3}, at: ext4_xattr_inode_lookup_create+0x1a21/0x1ef0 fs/ext4/xattr.c:1547 but task is already holding lock: ffff888071bbe6d8 (&ei->i_data_sem/3){++++}-{3:3}, at: ext4_setattr+0x13fa/0x1a00 fs/ext4/inode.c:5564 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&ei->i_data_sem/3){++++}-{3:3}: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 down_write+0x36/0x60 kernel/locking/rwsem.c:1573 ext4_update_i_disksize fs/ext4/ext4.h:3377 [inline] ext4_xattr_inode_write fs/ext4/xattr.c:1403 [inline] ext4_xattr_inode_lookup_create+0x16ac/0x1ef0 fs/ext4/xattr.c:1553 ext4_xattr_ibody_set+0x210/0x720 fs/ext4/xattr.c:2215 ext4_xattr_set_handle+0xc72/0x1560 fs/ext4/xattr.c:2392 ext4_xattr_set+0x26e/0x3d0 fs/ext4/xattr.c:2506 __vfs_setxattr+0x3e7/0x420 fs/xattr.c:182 __vfs_setxattr_noperm+0x12a/0x5e0 fs/xattr.c:216 vfs_setxattr+0x21d/0x420 fs/xattr.c:309 do_setxattr fs/xattr.c:594 [inline] setxattr+0x250/0x2b0 fs/xattr.c:617 path_setxattr+0x1bc/0x2a0 fs/xattr.c:636 __do_sys_lsetxattr fs/xattr.c:659 [inline] __se_sys_lsetxattr fs/xattr.c:655 [inline] __x64_sys_lsetxattr+0xb4/0xd0 fs/xattr.c:655 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #0 (&ea_inode->i_rwsem#8/1){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3090 [inline] check_prevs_add kernel/locking/lockdep.c:3209 [inline] validate_chain+0x1661/0x5950 kernel/locking/lockdep.c:3825 __lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5049 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 down_write+0x36/0x60 kernel/locking/rwsem.c:1573 inode_lock include/linux/fs.h:758 [inline] ext4_xattr_inode_create fs/ext4/xattr.c:1465 [inline] ext4_xattr_inode_lookup_create+0x1a21/0x1ef0 fs/ext4/xattr.c:1547 ext4_xattr_block_set+0x2a1/0x3920 fs/ext4/xattr.c:1867 ext4_xattr_move_to_block fs/ext4/xattr.c:2616 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2691 [inline] ext4_expand_extra_isize_ea+0x10d5/0x1bb0 fs/ext4/xattr.c:2783 __ext4_expand_extra_isize+0x2f7/0x3d0 fs/ext4/inode.c:5936 ext4_try_to_expand_extra_isize fs/ext4/inode.c:5979 [inline] __ext4_mark_inode_dirty+0x54f/0x920 fs/ext4/inode.c:6057 ext4_setattr+0x1493/0x1a00 fs/ext4/inode.c:5567 notify_change+0xce3/0xfc0 fs/attr.c:499 do_truncate+0x21c/0x300 fs/open.c:65 handle_truncate fs/namei.c:3285 [inline] do_open fs/namei.c:3630 [inline] path_openat+0x27e2/0x2e60 fs/namei.c:3783 do_filp_open+0x230/0x480 fs/namei.c:3810 do_sys_openat2+0x13b/0x4f0 fs/open.c:1318 do_sys_open fs/open.c:1334 [inline] __do_sys_creat fs/open.c:1412 [inline] __se_sys_creat fs/open.c:1406 [inline] __x64_sys_creat+0x11f/0x160 fs/open.c:1406 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ei->i_data_sem/3); lock(&ea_inode->i_rwsem#8/1); lock(&ei->i_data_sem/3); lock(&ea_inode->i_rwsem#8/1); *** DEADLOCK *** 5 locks held by syz-executor193/4373: #0: ffff88807c67c460 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:393 #1: ffff888071bbe850 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #1: ffff888071bbe850 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: do_truncate+0x208/0x300 fs/open.c:63 #2: ffff888071bbe9f0 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:803 [inline] #2: ffff888071bbe9f0 (mapping.invalidate_lock){++++}-{3:3}, at: ext4_setattr+0xec7/0x1a00 fs/ext4/inode.c:5524 #3: ffff888071bbe6d8 (&ei->i_data_sem/3){++++}-{3:3}, at: ext4_setattr+0x13fa/0x1a00 fs/ext4/inode.c:5564 #4: ffff888071bbe518 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_trylock_xattr fs/ext4/xattr.h:162 [inline] #4: ffff888071bbe518 (&ei->xattr_sem){++++}-{3:3}, at: ext4_try_to_expand_extra_isize fs/ext4/inode.c:5976 [inline] #4: ffff888071bbe518 (&ei->xattr_sem){++++}-{3:3}, at: __ext4_mark_inode_dirty+0x4b0/0x920 fs/ext4/inode.c:6057 stack backtrace: CPU: 1 PID: 4373 Comm: syz-executor193 Not tainted 6.1.115-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 check_noncircular+0x2fa/0x3b0 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+0x1661/0x5950 kernel/locking/lockdep.c:3825 __lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5049 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 down_write+0x36/0x60 kernel/locking/rwsem.c:1573 inode_lock include/linux/fs.h:758 [inline] ext4_xattr_inode_create fs/ext4/xattr.c:1465 [inline] ext4_xattr_inode_lookup_create+0x1a21/0x1ef0 fs/ext4/xattr.c:1547 ext4_xattr_block_set+0x2a1/0x3920 fs/ext4/xattr.c:1867 ext4_xattr_move_to_block fs/ext4/xattr.c:2616 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2691 [inline] ext4_expand_extra_isize_ea+0x10d5/0x1bb0 fs/ext4/xattr.c:2783 __ext4_expand_extra_isize+0x2f7/0x3d0 fs/ext4/inode.c:5936 ext4_try_to_expand_extra_isize fs/ext4/inode.c:5979 [inline] __ext4_mark_inode_dirty+0x54f/0x920 fs/ext4/inode.c:6057 ext4_setattr+0x1493/0x1a00 fs/ext4/inode.c:5567 notify_change+0xce3/0xfc0 fs/attr.c:499 do_truncate+0x21c/0x300 fs/open.c:65 handle_truncate fs/namei.c:3285 [inline] do_open fs/namei.c:3630 [inline] path_openat+0x27e2/0x2e60 fs/namei.c:3783 do_filp_open+0x230/0x480 fs/namei.c:3810 do_sys_openat2+0x13b/0x4f0 fs/open.c:1318 do_sys_open fs/open.c:1334 [inline] __do_sys_creat fs/open.c:1412 [inline] __se_sys_creat fs/open.c:1406 [inline] __x64_sys_creat+0x11f/0x160 fs/open.c:1406 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f1dc5e67269 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe18693a18 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007f1dc5e67269 RDX: 00007f1dc5e67269 RSI: 000000000000013d RDI: 0000000020000140 RBP: 0000000000000000 R08: 00007ffe18693a50 R09: 00007ffe18693a50 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe18693a3c R13: 000000000000003e R14: 431bde82d7b634db R15: 00007ffe18693a70 </TASK>
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2024/11/04 13:46 | linux-6.1.y | 7c15117f9468 | f00eed24 | .config | console log | report | syz / log | C | [disk image] [vmlinux] [kernel image] [mounted in repro] | ci2-linux-6-1-kasan | possible deadlock in ext4_xattr_inode_lookup_create | |
2024/11/04 13:11 | linux-6.1.y | 7c15117f9468 | f00eed24 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | possible deadlock in ext4_xattr_inode_lookup_create | ||
2024/11/04 13:10 | linux-6.1.y | 7c15117f9468 | f00eed24 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | possible deadlock in ext4_xattr_inode_lookup_create | ||
2024/11/04 13:09 | linux-6.1.y | 7c15117f9468 | f00eed24 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | possible deadlock in ext4_xattr_inode_lookup_create | ||
2024/11/04 13:06 | linux-6.1.y | 7c15117f9468 | f00eed24 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | possible deadlock in ext4_xattr_inode_lookup_create | ||
2024/11/04 13:04 | linux-6.1.y | 7c15117f9468 | f00eed24 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | possible deadlock in ext4_xattr_inode_lookup_create | ||
2024/11/04 13:03 | linux-6.1.y | 7c15117f9468 | f00eed24 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | possible deadlock in ext4_xattr_inode_lookup_create | ||
2024/11/04 13:00 | linux-6.1.y | 7c15117f9468 | f00eed24 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | possible deadlock in ext4_xattr_inode_lookup_create | ||
2024/11/04 13:00 | linux-6.1.y | 7c15117f9468 | f00eed24 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | possible deadlock in ext4_xattr_inode_lookup_create | ||
2024/11/04 12:57 | linux-6.1.y | 7c15117f9468 | f00eed24 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | possible deadlock in ext4_xattr_inode_lookup_create | ||
2024/11/04 12:55 | linux-6.1.y | 7c15117f9468 | f00eed24 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | possible deadlock in ext4_xattr_inode_lookup_create | ||
2024/11/04 12:53 | linux-6.1.y | 7c15117f9468 | f00eed24 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | possible deadlock in ext4_xattr_inode_lookup_create | ||
2024/11/04 12:51 | linux-6.1.y | 7c15117f9468 | f00eed24 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | possible deadlock in ext4_xattr_inode_lookup_create | ||
2024/11/04 12:43 | linux-6.1.y | 7c15117f9468 | f00eed24 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | possible deadlock in ext4_xattr_inode_lookup_create | ||
2024/11/04 12:40 | linux-6.1.y | 7c15117f9468 | f00eed24 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | possible deadlock in ext4_xattr_inode_lookup_create |