BUG: MAX_LOCK_DEPTH too low! turning off the locking correctness validator. depth: 48 max: 48! 48 locks held by syz.3.19/6501: #0: ffff0000ec512420 (sb_writers#11){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:409 #1: ffff0000f00b9788 (&sb->s_type->i_mutex_key#21){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:791 [inline] #1: ffff0000f00b9788 (&sb->s_type->i_mutex_key#21){+.+.}-{3:3}, at: do_truncate+0x1ac/0x28c fs/open.c:63 #2: ffff0000ef380ab8 (&c->snapshot_create_lock){.+.+}-{3:3}, at: bch2_truncate+0x134/0x274 fs/bcachefs/io_misc.c:290 #3: ffff0000ef3842d8 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire+0x18/0x54 include/linux/srcu.h:115 #4: ffff0000ebacb070 (&dev->mutex){....}-{3:3}, at: six_relock_type+0x24/0x5c fs/bcachefs/six.h:288 #5: ffff0000ebacb070 (&dev->mutex){....}-{3:3}, at: btree_node_lock_increment fs/bcachefs/btree_locking.h:248 [inline] #5: ffff0000ebacb070 (&dev->mutex){....}-{3:3}, at: __bch2_btree_node_relock+0x6a0/0xa94 fs/bcachefs/btree_locking.c:509 #6: ffff0000ebacb070 (&dev->mutex){....}-{3:3}, at: btree_node_lock_increment fs/bcachefs/btree_locking.h:248 [inline] #6: ffff0000ebacb070 (&dev->mutex){....}-{3:3}, at: __bch2_btree_node_relock+0x6a0/0xa94 fs/bcachefs/btree_locking.c:509 #7: ffff0000ebacb070 (&dev->mutex){....}-{3:3}, at: btree_node_lock_increment fs/bcachefs/btree_locking.h:248 [inline] #7: ffff0000ebacb070 (&dev->mutex){....}-{3:3}, at: __bch2_btree_node_relock+0x6a0/0xa94 fs/bcachefs/btree_locking.c:509 #8: ffff0000ebacb070 (&dev->mutex){....}-{3:3}, at: btree_node_lock_increment fs/bcachefs/btree_locking.h:248 [inline] #8: ffff0000ebacb070 (&dev->mutex){....}-{3:3}, at: __bch2_btree_node_relock+0x6a0/0xa94 fs/bcachefs/btree_locking.c:509 #9: ffff0000ebacb070 (&dev->mutex){....}-{3:3}, at: btree_node_lock_increment fs/bcachefs/btree_locking.h:248 [inline] #9: ffff0000ebacb070 (&dev->mutex){....}-{3:3}, at: __bch2_btree_node_relock+0x6a0/0xa94 fs/bcachefs/btree_locking.c:509 #10: ffff0000ebacb070 (&dev->mutex){....}-{3:3}, at: btree_node_lock_increment fs/bcachefs/btree_locking.h:248 [inline] #10: ffff0000ebacb070 (&dev->mutex){....}-{3:3}, at: __bch2_btree_node_relock+0x6a0/0xa94 fs/bcachefs/btree_locking.c:509 #11: ffff0000ebacb070 (&dev->mutex){....}-{3:3}, at: btree_node_lock_increment fs/bcachefs/btree_locking.h:248 [inline] #11: ffff0000ebacb070 (&dev->mutex){....}-{3:3}, at: __bch2_btree_node_relock+0x6a0/0xa94 fs/bcachefs/btree_locking.c:509 #12: ffff0000ebacb070 (&dev->mutex){....}-{3:3}, at: btree_node_lock_increment fs/bcachefs/btree_locking.h:248 [inline] #12: ffff0000ebacb070 (&dev->mutex){....}-{3:3}, at: __bch2_btree_node_relock+0x6a0/0xa94 fs/bcachefs/btree_locking.c:509 #13: ffff0000f01ba070 (&dev->mutex){....}-{3:3}, at: six_relock_type+0x24/0x5c fs/bcachefs/six.h:288 #14: ffff0000f01ba1c8 (&dev->mutex){....}-{3:3}, at: six_relock_type+0x24/0x5c fs/bcachefs/six.h:288 #15: ffff0000f01ba320 (&dev->mutex){....}-{3:3}, at: six_relock_type+0x24/0x5c fs/bcachefs/six.h:288 #16: ffff0000f01ba478 (&dev->mutex){....}-{3:3}, at: six_relock_type+0x24/0x5c fs/bcachefs/six.h:288 #17: ffff0000f01ba5d0 (&dev->mutex){....}-{3:3}, at: six_relock_type+0x24/0x5c fs/bcachefs/six.h:288 #18: ffff0000f01ba728 (&dev->mutex){....}-{3:3}, at: six_relock_type+0x24/0x5c fs/bcachefs/six.h:288 #19: ffff0000f01ba880 (&dev->mutex){....}-{3:3}, at: six_relock_type+0x24/0x5c fs/bcachefs/six.h:288 #20: ffff0000f01ba9d8 (&dev->mutex){....}-{3:3}, at: six_relock_type+0x24/0x5c fs/bcachefs/six.h:288 #21: ffff0000f075f070 (&dev->mutex){....}-{3:3}, at: six_trylock_type+0x1c/0x4c fs/bcachefs/six.h:206 #22: ffff0000f075e870 (&dev->mutex){....}-{3:3}, at: six_relock_type+0x24/0x5c fs/bcachefs/six.h:288 #23: ffff0000f075d070 (&dev->mutex){....}-{3:3}, at: six_trylock_type+0x1c/0x4c fs/bcachefs/six.h:206 #24: ffff0000f075d070 (&dev->mutex){....}-{3:3}, at: six_trylock_type+0x1c/0x4c fs/bcachefs/six.h:206 #25: ffff0000f075d070 (&dev->mutex){....}-{3:3}, at: six_trylock_type+0x1c/0x4c fs/bcachefs/six.h:206 #26: ffff0000f075d070 (&dev->mutex){....}-{3:3}, at: six_trylock_type+0x1c/0x4c fs/bcachefs/six.h:206 #27: ffff0000f075d070 (&dev->mutex){....}-{3:3}, at: six_trylock_type+0x1c/0x4c fs/bcachefs/six.h:206 #28: ffff0000f075d070 (&dev->mutex){....}-{3:3}, at: six_trylock_type+0x1c/0x4c fs/bcachefs/six.h:206 #29: ffff0000d5cee070 (&dev->mutex){....}-{3:3}, at: six_relock_type+0x24/0x5c fs/bcachefs/six.h:288 #30: ffff0000d5cee070 (&dev->mutex){....}-{3:3}, at: btree_node_lock_increment fs/bcachefs/btree_locking.h:248 [inline] #30: ffff0000d5cee070 (&dev->mutex){....}-{3:3}, at: __bch2_btree_node_relock+0x6a0/0xa94 fs/bcachefs/btree_locking.c:509 #31: ffff0000d5cee070 (&dev->mutex){....}-{3:3}, at: btree_node_lock_increment fs/bcachefs/btree_locking.h:248 [inline] #31: ffff0000d5cee070 (&dev->mutex){....}-{3:3}, at: __bch2_btree_node_relock+0x6a0/0xa94 fs/bcachefs/btree_locking.c:509 #32: ffff0000d5cee070 (&dev->mutex){....}-{3:3}, at: btree_node_lock_increment fs/bcachefs/btree_locking.h:248 [inline] #32: ffff0000d5cee070 (&dev->mutex){....}-{3:3}, at: __bch2_btree_node_relock+0x6a0/0xa94 fs/bcachefs/btree_locking.c:509 #33: ffff0000d5cee070 (&dev->mutex){....}-{3:3}, at: btree_node_lock_increment fs/bcachefs/btree_locking.h:248 [inline] #33: ffff0000d5cee070 (&dev->mutex){....}-{3:3}, at: __bch2_btree_node_relock+0x6a0/0xa94 fs/bcachefs/btree_locking.c:509 #34: ffff0000d5cee070 (&dev->mutex){....}-{3:3}, at: btree_node_lock_increment fs/bcachefs/btree_locking.h:248 [inline] #34: ffff0000d5cee070 (&dev->mutex){....}-{3:3}, at: __bch2_btree_node_relock+0x6a0/0xa94 fs/bcachefs/btree_locking.c:509 #35: ffff0000d5cee070 (&dev->mutex){....}-{3:3}, at: btree_node_lock_increment fs/bcachefs/btree_locking.h:248 [inline] #35: ffff0000d5cee070 (&dev->mutex){....}-{3:3}, at: __bch2_btree_node_relock+0x6a0/0xa94 fs/bcachefs/btree_locking.c:509 #36: ffff0000f0759870 (&dev->mutex){....}-{3:3}, at: six_relock_type+0x24/0x5c fs/bcachefs/six.h:288 #37: ffff0000ef3a6750 (&c->gc_lock){.+.+}-{3:3}, at: bch2_btree_update_start+0x590/0x15a0 fs/bcachefs/btree_update_interior.c:1195 #38: ffff0000f075d070 (&dev->mutex){....}-{3:3}, at: btree_path_copy fs/bcachefs/btree_iter.c:1228 [inline] #38: ffff0000f075d070 (&dev->mutex){....}-{3:3}, at: btree_path_clone fs/bcachefs/btree_iter.c:1236 [inline] #38: ffff0000f075d070 (&dev->mutex){....}-{3:3}, at: __bch2_btree_path_make_mut+0x1b8/0x508 fs/bcachefs/btree_iter.c:1249 #39: ffff0000f02669d8 (&dev->mutex){....}-{3:3}, at: six_trylock_type+0x1c/0x4c fs/bcachefs/six.h:206 #40: ffff0000f075d070 (&dev->mutex){....}-{3:3}, at: btree_path_copy fs/bcachefs/btree_iter.c:1228 [inline] #40: ffff0000f075d070 (&dev->mutex){....}-{3:3}, at: btree_path_clone fs/bcachefs/btree_iter.c:1236 [inline] #40: ffff0000f075d070 (&dev->mutex){....}-{3:3}, at: __bch2_btree_path_make_mut+0x1b8/0x508 fs/bcachefs/btree_iter.c:1249 #41: ffff0000ef39dc78 (&wp->lock){+.+.}-{3:3}, at: bch2_trans_mutex_lock_norelock fs/bcachefs/alloc_foreground.c:41 [inline] #41: ffff0000ef39dc78 (&wp->lock){+.+.}-{3:3}, at: writepoint_find fs/bcachefs/alloc_foreground.c:1302 [inline] #41: ffff0000ef39dc78 (&wp->lock){+.+.}-{3:3}, at: bch2_alloc_sectors_start_trans+0x290/0x1958 fs/bcachefs/alloc_foreground.c:1410 #42: ffff0000f02665d0 (&dev->mutex){....}-{3:3}, at: six_trylock_type+0x1c/0x4c fs/bcachefs/six.h:206 #43: ffff0000f075d070 (&dev->mutex){....}-{3:3}, at: btree_path_copy fs/bcachefs/btree_iter.c:1228 [inline] #43: ffff0000f075d070 (&dev->mutex){....}-{3:3}, at: btree_path_clone fs/bcachefs/btree_iter.c:1236 [inline] #43: ffff0000f075d070 (&dev->mutex){....}-{3:3}, at: __bch2_btree_path_make_mut+0x1b8/0x508 fs/bcachefs/btree_iter.c:1249 #44: ffff0000f075d070 (&dev->mutex){....}-{3:3}, at: btree_path_copy fs/bcachefs/btree_iter.c:1228 [inline] #44: ffff0000f075d070 (&dev->mutex){....}-{3:3}, at: btree_path_clone fs/bcachefs/btree_iter.c:1236 [inline] #44: ffff0000f075d070 (&dev->mutex){....}-{3:3}, at: __bch2_btree_path_make_mut+0x1b8/0x508 fs/bcachefs/btree_iter.c:1249 #45: ffff0000f0266f38 (&dev->mutex){....}-{3:3}, at: six_trylock_intent+0x18/0x48 fs/bcachefs/six.h:366 #46: ffff80008f2d7a60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x10/0x4c include/linux/rcupdate.h:328 #47: ffff0000e5ac3038 (rhashtable_bucket){..-.}-{0:0}, at: arch_atomic64_fetch_or_acquire arch/arm64/include/asm/atomic.h:86 [inline] #47: ffff0000e5ac3038 (rhashtable_bucket){..-.}-{0:0}, at: raw_atomic64_fetch_or_acquire include/linux/atomic/atomic-arch-fallback.h:3843 [inline] #47: ffff0000e5ac3038 (rhashtable_bucket){..-.}-{0:0}, at: raw_atomic_long_fetch_or_acquire include/linux/atomic/atomic-long.h:1111 [inline] #47: ffff0000e5ac3038 (rhashtable_bucket){..-.}-{0:0}, at: arch_test_and_set_bit_lock include/asm-generic/bitops/lock.h:28 [inline] #47: ffff0000e5ac3038 (rhashtable_bucket){..-.}-{0:0}, at: test_and_set_bit_lock include/asm-generic/bitops/instrumented-lock.h:58 [inline] #47: ffff0000e5ac3038 (rhashtable_bucket){..-.}-{0:0}, at: bit_spin_lock include/linux/bit_spinlock.h:27 [inline] #47: ffff0000e5ac3038 (rhashtable_bucket){..-.}-{0:0}, at: rht_lock+0x160/0x1b0 include/linux/rhashtable.h:332 INFO: lockdep is turned off. CPU: 0 PID: 6501 Comm: syz.3.19 Not tainted 6.10.0-rc7-syzkaller-gc912bf709078 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:317 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:324 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:114 dump_stack+0x1c/0x28 lib/dump_stack.c:123 __lock_acquire+0x1d5c/0x763c kernel/locking/lockdep.c:5159 lock_acquire+0x240/0x728 kernel/locking/lockdep.c:5754 rht_lock+0x18c/0x1b0 include/linux/rhashtable.h:333 __rhashtable_insert_fast include/linux/rhashtable.h:732 [inline] rhashtable_lookup_insert_fast include/linux/rhashtable.h:914 [inline] btree_key_cache_create fs/bcachefs/btree_key_cache.c:352 [inline] bch2_btree_path_traverse_cached_slowpath+0x9fc/0x2140 fs/bcachefs/btree_key_cache.c:485 bch2_btree_path_traverse_cached+0x7b8/0xa24 bch2_btree_path_traverse_one+0x36c/0x2b7c fs/bcachefs/btree_iter.c:1153 bch2_btree_path_traverse fs/bcachefs/btree_iter.h:229 [inline] bch2_btree_iter_peek_slot+0x7e4/0x25e4 fs/bcachefs/btree_iter.c:2598 __bch2_bkey_get_iter fs/bcachefs/btree_iter.h:552 [inline] bch2_bkey_get_iter fs/bcachefs/btree_iter.h:566 [inline] try_alloc_bucket fs/bcachefs/alloc_foreground.c:301 [inline] bch2_bucket_alloc_freelist fs/bcachefs/alloc_foreground.c:527 [inline] bch2_bucket_alloc_trans+0xd68/0x29e4 fs/bcachefs/alloc_foreground.c:649 bch2_bucket_alloc_set_trans+0x490/0x9e4 fs/bcachefs/alloc_foreground.c:810 __open_bucket_add_buckets+0xfb4/0x18b4 fs/bcachefs/alloc_foreground.c:1058 open_bucket_add_buckets+0x160/0x220 fs/bcachefs/alloc_foreground.c:1102 bch2_alloc_sectors_start_trans+0xa74/0x1958 __bch2_btree_node_alloc fs/bcachefs/btree_update_interior.c:333 [inline] bch2_btree_reserve_get+0x4ac/0xf54 fs/bcachefs/btree_update_interior.c:547 bch2_btree_update_start+0xe78/0x15a0 fs/bcachefs/btree_update_interior.c:1245 bch2_btree_split_leaf+0x11c/0x734 fs/bcachefs/btree_update_interior.c:1851 bch2_trans_commit_error+0x2a4/0x1068 fs/bcachefs/btree_trans_commit.c:918 __bch2_trans_commit+0x35e4/0x592c fs/bcachefs/btree_trans_commit.c:1138 bch2_trans_commit fs/bcachefs/btree_update.h:170 [inline] bch2_extent_update+0x3d0/0x9b4 fs/bcachefs/io_write.c:326 bch2_fpunch_at+0x640/0xd98 fs/bcachefs/io_misc.c:184 __bch2_resume_logged_op_truncate+0x404/0x620 fs/bcachefs/io_misc.c:260 bch2_truncate+0x198/0x274 fs/bcachefs/io_misc.c:291 bchfs_truncate+0x668/0xa74 fs/bcachefs/fs-io.c:476 bch2_setattr+0x198/0x230 fs/bcachefs/fs.c:926 notify_change+0x9d4/0xc84 fs/attr.c:497 do_truncate+0x1c0/0x28c fs/open.c:65 handle_truncate fs/namei.c:3355 [inline] do_open fs/namei.c:3705 [inline] path_openat+0x2428/0x2ae8 fs/namei.c:3860 do_filp_open+0x1bc/0x3cc fs/namei.c:3887 do_sys_openat2+0x124/0x1b8 fs/open.c:1413 do_sys_open fs/open.c:1428 [inline] __do_sys_openat fs/open.c:1444 [inline] __se_sys_openat fs/open.c:1439 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1439 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:131 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:150 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598