[11212.202944] run fstests generic/251 at 2023-09-09 00:00:44
[11212.663915] BTRFS: device fsid ec3e1159-917e-46d6-82d2-6d36aac552b0 devid 1 transid 2681841 /dev/mapper/vg0-lv0 scanned by mount (1592844)
[11212.665157] BTRFS info (device dm-0): using crc32c (crc32c-intel) checksum algorithm
[11212.665163] BTRFS info (device dm-0): using free space tree
[11212.669158] BTRFS info (device dm-0): auto enabling async discard
[11213.598089] BTRFS: device fsid 1f4c9021-c39f-4d95-89e0-5d6105770ea5 devid 1 transid 6 /dev/mapper/vg0-lv9 scanned by mkfs.btrfs (1592892)
[11213.615933] BTRFS info (device dm-9): using crc32c (crc32c-intel) checksum algorithm
[11213.615943] BTRFS info (device dm-9): turning on async discard
[11213.615945] BTRFS info (device dm-9): disk space caching is enabled
[11213.622645] BTRFS info (device dm-9): checking UUID tree
[12396.523341] ======================================================
[12396.523556] WARNING: possible circular locking dependency detected
[12396.523770] 6.5.0+ #1296 Not tainted
[12396.523925] ------------------------------------------------------
[12396.524151] kswapd0/50 is trying to acquire lock:
[12396.524323] ffff9092cc17a388 (btrfs_trans_num_writers){++++}-{0:0}, at: join_transaction+0x1af/0x590
[12396.524643]
but task is already holding lock:
[12396.524845] ffff90928f83b600 (sb_internal#2){++++}-{0:0}, at: btrfs_commit_inode_delayed_inode+0x5f/0x120
[12396.525253]
which lock already depends on the new lock.
[12396.525553]
the existing dependency chain (in reverse order) is:
[12396.525819]
-> #3 (sb_internal#2){++++}-{0:0}:
[12396.526037] start_transaction+0x3f9/0x740
[12396.526208] btrfs_commit_inode_delayed_inode+0x5f/0x120
[12396.526430] btrfs_evict_inode+0x273/0x3c0
[12396.526601] evict+0xcc/0x1d0
[12396.526733] inode_lru_isolate+0x14d/0x1e0
[12396.526904] __list_lru_walk_one+0xbe/0x1c0
[12396.527077] list_lru_walk_one+0x58/0x80
[12396.527255] prune_icache_sb+0x39/0x60
[12396.527447] super_cache_scan+0x167/0x1f0
[12396.527617] do_shrink_slab+0x163/0x340
[12396.527778] shrink_slab+0x1d7/0x2a0
[12396.527931] shrink_node+0x2eb/0x7b0
[12396.528082] balance_pgdat+0x344/0x780
[12396.528241] kswapd+0x205/0x410
[12396.528386] kthread+0xfc/0x130
[12396.528533] ret_from_fork+0x2d/0x50
[12396.528685] ret_from_fork_asm+0x1b/0x30
[12396.528852]
-> #2 (fs_reclaim){+.+.}-{0:0}:
[12396.529059] fs_reclaim_acquire+0xa5/0xe0
[12396.529228] kmem_cache_alloc_lru+0x4e/0x570
[12396.529410] btrfs_alloc_inode+0x2d/0x250
[12396.529583] alloc_inode+0x1a/0xc0
[12396.529729] iget5_locked+0xba/0x110
[12396.529881] btrfs_iget+0x43/0xe0
[12396.530059] create_reloc_inode+0x19d/0x370
[12396.530239] btrfs_relocate_block_group+0x1b7/0x410
[12396.530439] btrfs_relocate_chunk+0x4c/0x1b0
[12396.530615] btrfs_balance+0x8e7/0x11d0
[12396.530776] btrfs_ioctl+0x1d3d/0x2900
[12396.530936] __x64_sys_ioctl+0x8b/0xc0
[12396.531097] do_syscall_64+0x38/0x90
[12396.531249] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
[12396.531456]
-> #1 (btrfs_trans_num_extwriters){++++}-{0:0}:
[12396.531709] join_transaction+0xb4/0x590
[12396.531875] start_transaction+0x187/0x740
[12396.532045] btrfs_uuid_scan_kthread+0x2bc/0x3d0
[12396.532232] kthread+0xfc/0x130
[12396.532375] ret_from_fork+0x2d/0x50
[12396.532526] ret_from_fork_asm+0x1b/0x30
[12396.532717]
-> #0 (btrfs_trans_num_writers){++++}-{0:0}:
[12396.532972] __lock_acquire+0x1415/0x2190
[12396.533141] lock_acquire+0xc7/0x2b0
[12396.533292] join_transaction+0x1de/0x590
[12396.533465] start_transaction+0x187/0x740
[12396.533634] btrfs_commit_inode_delayed_inode+0x5f/0x120
[12396.533847] btrfs_evict_inode+0x273/0x3c0
[12396.534018] evict+0xcc/0x1d0
[12396.534150] inode_lru_isolate+0x14d/0x1e0
[12396.534323] __list_lru_walk_one+0xbe/0x1c0
[12396.534496] list_lru_walk_one+0x58/0x80
[12396.534661] prune_icache_sb+0x39/0x60
[12396.534820] super_cache_scan+0x167/0x1f0
[12396.534986] do_shrink_slab+0x163/0x340
[12396.535149] shrink_slab+0x1d7/0x2a0
[12396.535303] shrink_node+0x2eb/0x7b0
[12396.535492] balance_pgdat+0x344/0x780
[12396.535650] kswapd+0x205/0x410
[12396.535787] kthread+0xfc/0x130
[12396.535924] ret_from_fork+0x2d/0x50
[12396.536077] ret_from_fork_asm+0x1b/0x30
[12396.536241]
other info that might help us debug this:
[12396.536527] Chain exists of:
btrfs_trans_num_writers --> fs_reclaim --> sb_internal#2
[12396.536908] Possible unsafe locking scenario:
[12396.537122] CPU0 CPU1
[12396.537288] ---- ----
[12396.537457] rlock(sb_internal#2);
[12396.537587] lock(fs_reclaim);
[12396.537797] lock(sb_internal#2);
[12396.538019] rlock(btrfs_trans_num_writers);
[12396.538209]
*** DEADLOCK ***
[12396.538427] 4 locks held by kswapd0/50:
[12396.538586] #0: ffffffff99e62e40 (fs_reclaim){+.+.}-{0:0}, at: balance_pgdat+0x492/0x780
[12396.538878] #1: ffffffff99e51350 (shrinker_rwsem){++++}-{3:3}, at: shrink_slab+0x113/0x2a0
[12396.539176] #2: ffff90928f83b0e0 (&type->s_umount_key#45){++++}-{3:3}, at: super_cache_scan+0x38/0x1f0
[12396.539514] #3: ffff90928f83b600 (sb_internal#2){++++}-{0:0}, at: btrfs_commit_inode_delayed_inode+0x5f/0x120
[12396.539876]
stack backtrace:
[12396.540038] CPU: 0 PID: 50 Comm: kswapd0 Not tainted 6.5.0+ #1296
[12396.540259] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.13.0-2.fc32 04/01/2014
[12396.540564] Call Trace:
[12396.540659]
[12396.540767] dump_stack_lvl+0x58/0x90
[12396.540918] check_noncircular+0x101/0x110
[12396.541071] __lock_acquire+0x1415/0x2190
[12396.541222] lock_acquire+0xc7/0x2b0
[12396.541360] ? join_transaction+0x1af/0x590
[12396.541517] ? lock_release+0x134/0x270
[12396.541659] join_transaction+0x1de/0x590
[12396.541807] ? join_transaction+0x1af/0x590
[12396.541963] start_transaction+0x187/0x740
[12396.542113] btrfs_commit_inode_delayed_inode+0x5f/0x120
[12396.542310] btrfs_evict_inode+0x273/0x3c0
[12396.542462] ? lock_release+0x134/0x270
[12396.542603] ? __pfx_wake_bit_function+0x10/0x10
[12396.542776] evict+0xcc/0x1d0
[12396.542892] inode_lru_isolate+0x14d/0x1e0
[12396.543045] __list_lru_walk_one+0xbe/0x1c0
[12396.543197] ? __pfx_inode_lru_isolate+0x10/0x10
[12396.543372] ? __pfx_inode_lru_isolate+0x10/0x10
[12396.543575] list_lru_walk_one+0x58/0x80
[12396.543726] prune_icache_sb+0x39/0x60
[12396.543867] super_cache_scan+0x167/0x1f0
[12396.544017] do_shrink_slab+0x163/0x340
[12396.544163] shrink_slab+0x1d7/0x2a0
[12396.544302] shrink_node+0x2eb/0x7b0
[12396.544439] balance_pgdat+0x344/0x780
[12396.544581] kswapd+0x205/0x410
[12396.544703] ? __pfx_autoremove_wake_function+0x10/0x10
[12396.544893] ? __pfx_kswapd+0x10/0x10
[12396.545030] kthread+0xfc/0x130
[12396.545151] ? __pfx_kthread+0x10/0x10
[12396.545291] ret_from_fork+0x2d/0x50
[12396.545429] ? __pfx_kthread+0x10/0x10
[12396.545569] ret_from_fork_asm+0x1b/0x30
[12396.545718]
[12509.089771] BTRFS: device fsid 1f4c9021-c39f-4d95-89e0-5d6105770ea5 devid 1 transid 139 /dev/mapper/vg0-lv9 scanned by mount (1660556)
[12509.090934] BTRFS info (device dm-9): using crc32c (crc32c-intel) checksum algorithm
[12509.091294] BTRFS info (device dm-9): turning on async discard
[12509.091540] BTRFS info (device dm-9): disk space caching is enabled