INFO: task syz.3.69:6663 blocked for more than 143 seconds.
      Not tainted 6.10.0-rc7-syzkaller-gc912bf709078 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.69        state:D stack:0     pid:6663  tgid:6626  ppid:6295   flags:0x00000001
Call trace:
 __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x14ac/0x24d8 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xbc/0x238 kernel/sched/core.c:6837
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6894
 rwsem_down_write_slowpath+0xd10/0x14c8 kernel/locking/rwsem.c:1178
 __down_write_common kernel/locking/rwsem.c:1306 [inline]
 __down_write kernel/locking/rwsem.c:1315 [inline]
 down_write+0xb4/0xc0 kernel/locking/rwsem.c:1580
 inode_lock include/linux/fs.h:791 [inline]
 do_truncate fs/open.c:63 [inline]
 do_ftruncate+0x3d0/0x4cc fs/open.c:181
 do_sys_ftruncate fs/open.c:199 [inline]
 __do_sys_ftruncate fs/open.c:207 [inline]
 __se_sys_ftruncate fs/open.c:205 [inline]
 __arm64_sys_ftruncate+0x94/0xec fs/open.c:205
 __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

Showing all locks held in the system:
1 lock held by khungtaskd/31:
 #0: ffff80008f2d7a60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:328
2 locks held by kworker/u8:6/582:
2 locks held by getty/6047:
 #0: ffff0000d2b130a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff800097eae2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2211
5 locks held by syz.3.69/6627:
 #0: ffff0000d6936420 (sb_writers#14){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:409
 #1: ffff0000eae22658 (&sb->s_type->i_mutex_key#22){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:791 [inline]
 #1: ffff0000eae22658 (&sb->s_type->i_mutex_key#22){+.+.}-{3:3}, at: do_truncate+0x1ac/0x28c fs/open.c:63
 #2: ffff0000ef580ab8 (&c->snapshot_create_lock){.+.+}-{3:3}, at: bch2_truncate+0x134/0x274 fs/bcachefs/io_misc.c:290
 #3: ffff0000ef5842d8 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire+0x18/0x54 include/linux/srcu.h:115
 #4: ffff0000ef5a6750 (&c->gc_lock){.+.+}-{3:3}, at: bch2_btree_update_start+0x590/0x15a0 fs/bcachefs/btree_update_interior.c:1195
2 locks held by syz.3.69/6663:
 #0: ffff0000d6936420 (sb_writers#14){.+.+}-{0:0}, at: do_ftruncate+0x1e4/0x4cc fs/open.c:178
 #1: ffff0000eae22658 (&sb->s_type->i_mutex_key#22){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:791 [inline]
 #1: ffff0000eae22658 (&sb->s_type->i_mutex_key#22){+.+.}-{3:3}, at: do_truncate fs/open.c:63 [inline]
 #1: ffff0000eae22658 (&sb->s_type->i_mutex_key#22){+.+.}-{3:3}, at: do_ftruncate+0x3d0/0x4cc fs/open.c:181
4 locks held by bch-copygc/loop/6659:
3 locks held by kworker/u8:14/8325:
1 lock held by udevd/9234:
 #0: ffff0001b3d9f018 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:559 [inline]
 #0: ffff0001b3d9f018 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1406 [inline]
 #0: ffff0001b3d9f018 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1702 [inline]
 #0: ffff0001b3d9f018 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x2e0/0x24d8 kernel/sched/core.c:6653
1 lock held by syz.4.684/9442:
 #0: ffff800091f0e928 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79
1 lock held by syz.2.685/9446:
 #0: ffff0000eb0e78b8 (&nft_net->commit_mutex){+.+.}-{3:3}, at: nf_tables_valid_genid+0x40/0x120 net/netfilter/nf_tables_api.c:10758
1 lock held by syz.1.686/9452:
 #0: ffff800091f0e928 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
 #0: ffff800091f0e928 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x704/0xe64 net/core/rtnetlink.c:6632

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