gfs2: fsid=syz:syz.0: first mount done, others may mount
BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 0 PID: 9707 Comm: syz.3.1314 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Call trace:
 dump_backtrace+0x1c0/0x1ec arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf4/0x15c lib/dump_stack.c:106
 dump_stack+0x1c/0x5c lib/dump_stack.c:113
 add_chain_cache kernel/locking/lockdep.c:-1 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3772 [inline]
 validate_chain kernel/locking/lockdep.c:3793 [inline]
 __lock_acquire+0x1864/0x6800 kernel/locking/lockdep.c:5049
 lock_acquire+0x20c/0x63c kernel/locking/lockdep.c:5662
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x6c/0xb0 kernel/locking/spinlock.c:162
 folio_lruvec_lock_irqsave+0x104/0x250 mm/memcontrol.c:1348
 folio_lruvec_relock_irqsave include/linux/memcontrol.h:1647 [inline]
 folio_batch_move_lru+0x278/0x4c4 mm/swap.c:237
 folio_batch_add_and_move mm/swap.c:255 [inline]
 folio_add_lru+0x3f0/0x67c mm/swap.c:526
 filemap_add_folio+0x154/0x20c mm/filemap.c:977
 __filemap_get_folio+0x708/0xac0 mm/filemap.c:2004
 pagecache_get_page+0x3c/0x16c mm/folio-compat.c:110
 find_or_create_page include/linux/pagemap.h:648 [inline]
 grab_cache_page include/linux/pagemap.h:780 [inline]
 gfs2_getbuf+0x11c/0x724 fs/gfs2/meta_io.c:133
 gfs2_meta_read+0x128/0x810 fs/gfs2/meta_io.c:265
 gfs2_meta_buffer+0x104/0x2ec fs/gfs2/meta_io.c:491
 gfs2_meta_inode_buffer fs/gfs2/meta_io.h:72 [inline]
 gfs2_inode_refresh+0xb0/0xd64 fs/gfs2/glops.c:480
 inode_go_instantiate+0x4c/0x68 fs/gfs2/glops.c:503
 gfs2_instantiate+0x178/0x2b4 fs/gfs2/glock.c:520
 gfs2_glock_holder_ready fs/gfs2/glock.c:1333 [inline]
 gfs2_glock_wait+0x1b4/0x298 fs/gfs2/glock.c:1353
 gfs2_glock_nq+0x8bc/0x11c4 fs/gfs2/glock.c:1596
 gfs2_glock_nq_init fs/gfs2/glock.h:255 [inline]
 gfs2_rindex_update+0x270/0x3b8 fs/gfs2/rgrp.c:1045
 init_inodes+0x200/0x2d4 fs/gfs2/ops_fstype.c:917
 gfs2_fill_super+0x11c0/0x194c fs/gfs2/ops_fstype.c:1246
 get_tree_bdev+0x358/0x544 fs/super.c:1366
 gfs2_get_tree+0x54/0x1b4 fs/gfs2/ops_fstype.c:1327
 vfs_get_tree+0x90/0x274 fs/super.c:1573
 do_new_mount+0x228/0x810 fs/namespace.c:3078
 path_mount+0x5bc/0xe80 fs/namespace.c:3408
 do_mount fs/namespace.c:3421 [inline]
 __do_sys_mount fs/namespace.c:3629 [inline]
 __se_sys_mount fs/namespace.c:3606 [inline]
 __arm64_sys_mount+0x49c/0x59c fs/namespace.c:3606
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x130 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585