BTRFS error (device loop0 state A): Transaction aborted (error -12) BTRFS: error (device loop0 state A) in btrfs_run_delayed_refs:2215: errno=-12 Out of memory BTRFS info (device loop0 state EA): forced readonly BUG: MAX_LOCK_DEPTH too low! turning off the locking correctness validator. depth: 48 max: 48! 48 locks held by syz-executor405/5334: #0: ffff8880408d8420 (sb_writers#10){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2931 [inline] #0: ffff8880408d8420 (sb_writers#10){.+.+}-{0:0}, at: vfs_writev+0x2d1/0xba0 fs/read_write.c:1062 #1: ffff888046a03030 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: inode_trylock include/linux/fs.h:835 [inline] #1: ffff888046a03030 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: btrfs_inode_lock+0x87/0xe0 fs/btrfs/inode.c:357 #2: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #3: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #4: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #5: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #6: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #7: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #8: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #9: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #10: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #11: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #12: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #13: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #14: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #15: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #16: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #17: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #18: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #19: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #20: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #21: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #22: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #23: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #24: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #25: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #26: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #27: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #28: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #29: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #30: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #31: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #32: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #33: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #34: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #35: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #36: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #37: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #38: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #39: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #40: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #41: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #42: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #43: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #44: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #45: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #46: ffff88804313aa58 (btrfs-tree-01){++++}-{3:3}, at: btrfs_try_tree_read_lock+0x1c/0x240 fs/btrfs/locking.c:157 #47: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #47: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #47: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: find_extent_buffer_nolock+0x21/0x320 fs/btrfs/extent_io.c:1615 INFO: lockdep is turned off. CPU: 0 UID: 0 PID: 5334 Comm: syz-executor405 Not tainted 6.12.0-rc6-syzkaller-00077-g2e1b3cc9d7f7 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 __lock_acquire+0x10ee/0x2050 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825 rcu_lock_acquire include/linux/rcupdate.h:337 [inline] rcu_read_lock include/linux/rcupdate.h:849 [inline] find_extent_buffer_nolock+0x3e/0x320 fs/btrfs/extent_io.c:1615 find_extent_buffer+0x24/0x340 fs/btrfs/extent_io.c:2710 read_block_for_search+0x348/0x920 fs/btrfs/ctree.c:1540 btrfs_search_slot+0x120d/0x30d0 fs/btrfs/ctree.c:2200 btrfs_lookup_file_extent+0x14c/0x210 fs/btrfs/file-item.c:267 can_nocow_extent+0x1c5/0x940 fs/btrfs/inode.c:7055 btrfs_check_nocow_lock+0x274/0x400 fs/btrfs/file.c:1106 btrfs_buffered_write+0x63f/0x1360 fs/btrfs/file.c:1280 btrfs_do_write_iter+0x279/0x760 fs/btrfs/file.c:1508 do_iter_readv_writev+0x600/0x880 vfs_writev+0x376/0xba0 fs/read_write.c:1064 do_pwritev fs/read_write.c:1165 [inline] __do_sys_pwritev2 fs/read_write.c:1224 [inline] __se_sys_pwritev2+0x1ca/0x2d0 fs/read_write.c:1215 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f52a2607cd9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 1b 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:00007ffc4c848278 EFLAGS: 00000246 ORIG_RAX: 0000000000000148 RAX: ffffffffffffffda RBX: 00007ffc4c8482b0 RCX: 00007f52a2607cd9 RDX: 0000000000000001 RSI: 00000000200001c0 RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000000000009 R09: 0000000000000008 R10: 0000000000000002 R11: 0000000000000246 R12: 00007ffc4c8482ac R13: 0000000000000001 R14: 431bde82d7b634db R15: 00007ffc4c8482f0