[12150.146031] run fstests generic/251 at 2023-11-07 00:16:37
[12150.660614] BTRFS: device fsid ec3e1159-917e-46d6-82d2-6d36aac552b0 devid 1 transid 3115210 /dev/mapper/vg0-lv0 scanned by mount (1613589)
[12150.661794] BTRFS info (device dm-0): using crc32c (crc32c-intel) checksum algorithm
[12150.661801] BTRFS info (device dm-0): using free space tree
[12150.665837] BTRFS info (device dm-0): auto enabling async discard
[12151.406610] BTRFS: device fsid 1fea20f2-317c-4cd5-8607-5570118c8c22 devid 1 transid 6 /dev/mapper/vg0-lv9 scanned by mount (1613647)
[12151.407844] BTRFS info (device dm-9): using crc32c (crc32c-intel) checksum algorithm
[12151.407852] BTRFS info (device dm-9): turning on async discard
[12151.407854] BTRFS info (device dm-9): disk space caching is enabled
[12151.418350] BTRFS info (device dm-9): checking UUID tree
[13043.762324] ======================================================
[13043.762838] WARNING: possible circular locking dependency detected
[13043.763350] 6.6.0-rc7+ #1351 Not tainted
[13043.763680] ------------------------------------------------------
[13043.764264] kswapd0/50 is trying to acquire lock:
[13043.764600] ffff8b79cc1fe390 (btrfs_trans_num_writers){++++}-{0:0}, at: join_transaction+0x1d0/0x580
[13043.765470]
but task is already holding lock:
[13043.765977] ffff8b79c5bfc600 (sb_internal#2){++++}-{0:0}, at: btrfs_commit_inode_delayed_inode+0x5f/0x120
[13043.766792]
which lock already depends on the new lock.
[13043.767415]
the existing dependency chain (in reverse order) is:
[13043.768046]
-> #3 (sb_internal#2){++++}-{0:0}:
[13043.768554] start_transaction+0x493/0xad0
[13043.768962] btrfs_commit_inode_delayed_inode+0x5f/0x120
[13043.769467] btrfs_evict_inode+0x273/0x3c0
[13043.769869] evict+0xcc/0x1d0
[13043.770172] inode_lru_isolate+0x14d/0x1e0
[13043.770567] __list_lru_walk_one+0xbe/0x1c0
[13043.770984] list_lru_walk_one+0x58/0x80
[13043.771389] prune_icache_sb+0x39/0x60
[13043.771734] super_cache_scan+0x167/0x1f0
[13043.772035] do_shrink_slab+0x163/0x340
[13043.772330] shrink_slab+0x1d7/0x2a0
[13043.772604] shrink_node+0x2eb/0x7b0
[13043.772889] balance_pgdat+0x344/0x780
[13043.773184] kswapd+0x205/0x410
[13043.773429] kthread+0xff/0x130
[13043.773691] ret_from_fork+0x2d/0x50
[13043.773977] ret_from_fork_asm+0x1b/0x30
[13043.774267]
-> #2 (fs_reclaim){+.+.}-{0:0}:
[13043.774639] fs_reclaim_acquire+0xa2/0xe0
[13043.774932] kmem_cache_alloc_lru+0x4e/0x600
[13043.775253] btrfs_alloc_inode+0x2d/0x250
[13043.775550] alloc_inode+0x1a/0xc0
[13043.775808] iget5_locked+0xba/0x110
[13043.776070] btrfs_iget+0x43/0xe0
[13043.776322] create_reloc_inode+0x1a0/0x360
[13043.776650] btrfs_relocate_block_group+0x1d2/0x3d0
[13043.777012] btrfs_relocate_chunk+0x4c/0x1b0
[13043.777326] btrfs_balance+0x8e7/0x11d0
[13043.777623] btrfs_ioctl+0x1c25/0x2860
[13043.777921] __x64_sys_ioctl+0x8b/0xc0
[13043.778205] do_syscall_64+0x38/0x90
[13043.778507] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
[13043.778888]
-> #1 (btrfs_trans_num_extwriters){++++}-{0:0}:
[13043.779345] join_transaction+0xaf/0x580
[13043.779642] start_transaction+0x1a0/0xad0
[13043.779940] btrfs_uuid_scan_kthread+0x2bc/0x3d0
[13043.780291] kthread+0xff/0x130
[13043.780533] ret_from_fork+0x2d/0x50
[13043.780799] ret_from_fork_asm+0x1b/0x30
[13043.781092]
-> #0 (btrfs_trans_num_writers){++++}-{0:0}:
[13043.781561] __lock_acquire+0x1415/0x2190
[13043.781908] lock_acquire+0xc7/0x2b0
[13043.782181] join_transaction+0x1e4/0x580
[13043.782491] start_transaction+0x1a0/0xad0
[13043.782798] btrfs_commit_inode_delayed_inode+0x5f/0x120
[13043.783160] btrfs_evict_inode+0x273/0x3c0
[13043.783485] evict+0xcc/0x1d0
[13043.783703] inode_lru_isolate+0x14d/0x1e0
[13043.784031] __list_lru_walk_one+0xbe/0x1c0
[13043.784330] list_lru_walk_one+0x58/0x80
[13043.784631] prune_icache_sb+0x39/0x60
[13043.784918] super_cache_scan+0x167/0x1f0
[13043.785240] do_shrink_slab+0x163/0x340
[13043.785518] shrink_slab+0x1d7/0x2a0
[13043.785785] shrink_node+0x2eb/0x7b0
[13043.786039] balance_pgdat+0x344/0x780
[13043.786307] kswapd+0x205/0x410
[13043.786554] kthread+0xff/0x130
[13043.786813] ret_from_fork+0x2d/0x50
[13043.787097] ret_from_fork_asm+0x1b/0x30
[13043.787407]
other info that might help us debug this:
[13043.787949] Chain exists of:
btrfs_trans_num_writers --> fs_reclaim --> sb_internal#2
[13043.788658] Possible unsafe locking scenario:
[13043.789056] CPU0 CPU1
[13043.789357] ---- ----
[13043.789661] rlock(sb_internal#2);
[13043.789905] lock(fs_reclaim);
[13043.790281] lock(sb_internal#2);
[13043.790672] rlock(btrfs_trans_num_writers);
[13043.790968]
*** DEADLOCK ***
[13043.791365] 4 locks held by kswapd0/50:
[13043.791627] #0: ffffffffa4e62ea0 (fs_reclaim){+.+.}-{0:0}, at: balance_pgdat+0x3eb/0x780
[13043.792184] #1: ffffffffa4e513b0 (shrinker_rwsem){++++}-{3:3}, at: shrink_slab+0x113/0x2a0
[13043.792757] #2: ffff8b79c5bfc0e0 (&type->s_umount_key#45){++++}-{3:3}, at: super_cache_scan+0x38/0x1f0
[13043.793291] #3: ffff8b79c5bfc600 (sb_internal#2){++++}-{0:0}, at: btrfs_commit_inode_delayed_inode+0x5f/0x120
[13043.793925]
stack backtrace:
[13043.794233] CPU: 0 PID: 50 Comm: kswapd0 Not tainted 6.6.0-rc7+ #1351
[13043.794675] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.13.0-2.fc32 04/01/2014
[13043.795256] Call Trace:
[13043.795438]
[13043.795592] dump_stack_lvl+0x58/0x90
[13043.795855] check_noncircular+0x101/0x110
[13043.796127] __lock_acquire+0x1415/0x2190
[13043.796414] lock_acquire+0xc7/0x2b0
[13043.796666] ? join_transaction+0x1d0/0x580
[13043.796962] ? lock_release+0x134/0x270
[13043.797229] ? join_transaction+0x1d0/0x580
[13043.797518] ? join_transaction+0x3d/0x580
[13043.797805] join_transaction+0x1e4/0x580
[13043.798087] ? join_transaction+0x1d0/0x580
[13043.798379] start_transaction+0x1a0/0xad0
[13043.798647] btrfs_commit_inode_delayed_inode+0x5f/0x120
[13043.799352] btrfs_evict_inode+0x273/0x3c0
[13043.799853] ? lock_release+0x134/0x270
[13043.800087] ? __pfx_wake_bit_function+0x10/0x10
[13043.800365] evict+0xcc/0x1d0
[13043.800551] inode_lru_isolate+0x14d/0x1e0
[13043.800801] __list_lru_walk_one+0xbe/0x1c0
[13043.801085] ? __pfx_inode_lru_isolate+0x10/0x10
[13043.801415] ? __pfx_inode_lru_isolate+0x10/0x10
[13043.801713] list_lru_walk_one+0x58/0x80
[13043.801960] prune_icache_sb+0x39/0x60
[13043.802186] super_cache_scan+0x167/0x1f0
[13043.802423] do_shrink_slab+0x163/0x340
[13043.802651] shrink_slab+0x1d7/0x2a0
[13043.802871] shrink_node+0x2eb/0x7b0
[13043.803089] balance_pgdat+0x344/0x780
[13043.803313] kswapd+0x205/0x410
[13043.803504] ? __pfx_autoremove_wake_function+0x10/0x10
[13043.803812] ? __pfx_kswapd+0x10/0x10
[13043.804030] kthread+0xff/0x130
[13043.804221] ? __pfx_kthread+0x10/0x10
[13043.804443] ret_from_fork+0x2d/0x50
[13043.804656] ? __pfx_kthread+0x10/0x10
[13043.804884] ret_from_fork_asm+0x1b/0x30
[13043.805129]
[13276.337234] BTRFS warning (device dm-9): failed to trim 7 block group(s), last error -512
[13280.211002] BTRFS: device fsid 1fea20f2-317c-4cd5-8607-5570118c8c22 devid 1 transid 127 /dev/mapper/vg0-lv9 scanned by mount (1625432)
[13280.212393] BTRFS info (device dm-9): using crc32c (crc32c-intel) checksum algorithm
[13280.212972] BTRFS info (device dm-9): turning on async discard
[13280.213386] BTRFS info (device dm-9): disk space caching is enabled