INFO: task syz.2.21:6568 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.2.21 state:D stack:0 pid:6568 tgid:6565 ppid:6384 flags:0x00000009 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 __closure_sync+0x198/0x29c lib/closure.c:146 closure_sync include/linux/closure.h:194 [inline] bch2_btree_update_start+0x1208/0x15a0 fs/bcachefs/btree_update_interior.c:1267 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_logged_op_start+0x19c/0x2c0 fs/bcachefs/logged_ops.c:83 bch2_truncate+0x168/0x274 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 Showing all locks held in the system: 7 locks held by kworker/0:0/8: #0: ffff0000c0029148 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3222 #1: ffff800094167c20 (serio_event_work){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3222 #2: ffff8000914d8708 (serio_mutex){+.+.}-{3:3}, at: serio_handle_event+0x38/0x7c4 drivers/input/serio/serio.c:200 #3: ffff0000d686e2e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline] #3: ffff0000d686e2e8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x90/0x434 drivers/base/dd.c:1003 #4: ffff0000d686e1d8 (&serio->drv_mutex){+.+.}-{3:3}, at: serio_connect_driver drivers/input/serio/serio.c:43 [inline] #4: ffff0000d686e1d8 (&serio->drv_mutex){+.+.}-{3:3}, at: serio_driver_probe+0x58/0xa8 drivers/input/serio/serio.c:775 #5: ffff8000914eba48 (psmouse_mutex){+.+.}-{3:3}, at: psmouse_connect+0x90/0x10b8 drivers/input/mouse/psmouse-base.c:1583 #6: ffff0000ef56c080 (&ps2dev->cmd_mutex){+.+.}-{3:3}, at: ps2_begin_command drivers/input/serio/libps2.c:133 [inline] #6: ffff0000ef56c080 (&ps2dev->cmd_mutex){+.+.}-{3:3}, at: ps2_command+0x78/0xe4 drivers/input/serio/libps2.c:405 1 lock held by khungtaskd/31: #0: ffff80008f4b7be0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:328 4 locks held by kworker/u8:3/43: 2 locks held by getty/6146: #0: ffff0000d77c00a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff8000980ee2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2211 3 locks held by kworker/1:4/6432: #0: ffff0000c0028948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3222 #1: ffff8000a25a7c20 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3222 #2: ffff0000dcd1f240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x270/0x32bc drivers/net/netdevsim/fib.c:1489 5 locks held by syz.2.21/6568: #0: ffff0000ee314420 (sb_writers#15){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:409 #1: ffff0000efef8150 (&sb->s_type->i_mutex_key#25){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:791 [inline] #1: ffff0000efef8150 (&sb->s_type->i_mutex_key#25){+.+.}-{3:3}, at: do_truncate+0x1ac/0x28c fs/open.c:63 #2: ffff0000f1f00ab8 (&c->snapshot_create_lock){.+.+}-{3:3}, at: bch2_truncate+0x134/0x274 fs/bcachefs/io_misc.c:290 #3: ffff0000f1f042d8 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire+0x18/0x54 include/linux/srcu.h:115 #4: ffff0000f1f26750 (&c->gc_lock){.+.+}-{3:3}, at: bch2_btree_update_start+0x590/0x15a0 fs/bcachefs/btree_update_interior.c:1195 1 lock held by bch-copygc/loop/6608: 1 lock held by syz-executor/7945: 2 locks held by udevd/8882: 1 lock held by syz.2.452/9149: #0: ffff8000914d8708 (serio_mutex){+.+.}-{3:3}, at: serio_unregister_port+0x38/0x140 drivers/input/serio/serio.c:704 7 locks held by syz.4.457/9171: 2 locks held by syz.1.454/9174: 3 locks held by udevadm/9183: =============================================