INFO: task syz.0.194:7931 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.194       state:D stack:0     pid:7931  tgid:7930  ppid:6530   task_flags:0x400140 flags:0x00000011
Call trace:
 __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (T)
 context_switch kernel/sched/core.c:5357 [inline]
 __schedule+0x13b0/0x2864 kernel/sched/core.c:6961
 __schedule_loop kernel/sched/core.c:7043 [inline]
 schedule+0xb4/0x230 kernel/sched/core.c:7058
 __closure_sync+0x160/0x278 lib/closure.c:146
 closure_sync include/linux/closure.h:195 [inline]
 __bch2_wait_on_allocator+0x19c/0x214 fs/bcachefs/alloc_foreground.c:1682
 bch2_wait_on_allocator fs/bcachefs/alloc_foreground.h:315 [inline]
 bch2_btree_update_start+0x158c/0x1ab8 fs/bcachefs/btree_update_interior.c:1293
 bch2_btree_split_leaf+0x118/0x71c fs/bcachefs/btree_update_interior.c:1921
 bch2_trans_commit_error+0x17c/0x11a0 fs/bcachefs/btree_trans_commit.c:914
 __bch2_trans_commit+0x17a4/0x625c fs/bcachefs/btree_trans_commit.c:1104
 bch2_trans_commit fs/bcachefs/btree_update.h:241 [inline]
 __bch2_create+0x680/0x96c fs/bcachefs/fs.c:593
 bch2_mknod fs/bcachefs/fs.c:748 [inline]
 bch2_mkdir+0x4c/0xa4 fs/bcachefs/fs.c:906
 vfs_mkdir+0x284/0x424 fs/namei.c:4366
 do_mkdirat+0x1f8/0x4c8 fs/namei.c:4399
 __do_sys_mkdirat fs/namei.c:4416 [inline]
 __se_sys_mkdirat fs/namei.c:4414 [inline]
 __arm64_sys_mkdirat+0x8c/0xa4 fs/namei.c:4414
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596

Showing all locks held in the system:
1 lock held by khungtaskd/32:
 #0: ffff80008f9c92e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330
1 lock held by klogd/6157:
2 locks held by getty/6311:
 #0: ffff0000d2cc20a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff80009bbce2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfa4 drivers/tty/n_tty.c:2222
5 locks held by syz.0.194/7931:
 #0: ffff0000d8ad0428 (sb_writers#16){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:557
 #1: ffff0000f4a154d0 (&sb->s_type->i_mutex_key#24/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:914 [inline]
 #1: ffff0000f4a154d0 (&sb->s_type->i_mutex_key#24/1){+.+.}-{4:4}, at: filename_create+0x1ac/0x32c fs/namei.c:4139
 #2: ffff0000f4a158b8 (&inode->ei_update_lock){+.+.}-{4:4}, at: __bch2_create+0x224/0x96c fs/bcachefs/fs.c:567
 #3: ffff0000e3204398 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire+0x18/0x54 include/linux/srcu.h:160
 #4: ffff0000e3226710 (&c->gc_lock){++++}-{4:4}, at: bch2_btree_update_start+0x468/0x1ab8 fs/bcachefs/btree_update_interior.c:1211

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