INFO: task syz.3.193:7492 blocked for more than 143 seconds. Not tainted 6.11.0-rc7-syzkaller-g5f5673607153 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.3.193 state:D stack:0 pid:7492 tgid:7489 ppid:6719 flags:0x00000001 Call trace: __switch_to+0x420/0x6dc arch/arm64/kernel/process.c:603 context_switch kernel/sched/core.c:5188 [inline] __schedule+0x13d4/0x2418 kernel/sched/core.c:6529 __schedule_loop kernel/sched/core.c:6606 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6621 __bch2_two_state_lock+0x1f0/0x260 fs/bcachefs/two_state_shared_lock.c:7 bch2_two_state_lock fs/bcachefs/two_state_shared_lock.h:55 [inline] bch2_read_iter+0xdc4/0x1100 fs/bcachefs/fs-io-direct.c:207 new_sync_read fs/read_write.c:395 [inline] vfs_read+0x74c/0x984 fs/read_write.c:476 ksys_read+0x15c/0x26c fs/read_write.c:619 __do_sys_read fs/read_write.c:629 [inline] __se_sys_read fs/read_write.c:627 [inline] __arm64_sys_read+0x7c/0x90 fs/read_write.c:627 __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+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: 3 locks held by kworker/u8:0/11: #0: ffff0000d1d93148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205 #1: ffff8000975b7c20 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3205 #2: ffff800092437ee8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 1 lock held by khungtaskd/31: #0: ffff80008f74dfa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:325 3 locks held by kworker/u8:5/179: #0: ffff0000c0031148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205 #1: ffff80009b6b7c20 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3205 #2: ffff800092437ee8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 6 locks held by kworker/u8:7/511: #0: ffff0000c1869948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205 #1: ffff80009c667c20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3205 #2: ffff80009242b950 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x13c/0x9b4 net/core/net_namespace.c:594 #3: ffff0000eea2f0e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline] #3: ffff0000eea2f0e8 (&dev->mutex){....}-{3:3}, at: devl_dev_lock net/devlink/devl_internal.h:108 [inline] #3: ffff0000eea2f0e8 (&dev->mutex){....}-{3:3}, at: devlink_pernet_pre_exit+0x114/0x418 net/devlink/core.c:506 #4: ffff0000ed006250 (&devlink->lock_key#14){+.+.}-{3:3}, at: devl_lock net/devlink/core.c:276 [inline] #4: ffff0000ed006250 (&devlink->lock_key#14){+.+.}-{3:3}, at: devl_dev_lock net/devlink/devl_internal.h:109 [inline] #4: ffff0000ed006250 (&devlink->lock_key#14){+.+.}-{3:3}, at: devlink_pernet_pre_exit+0x124/0x418 net/devlink/core.c:506 #5: ffff800092437ee8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 3 locks held by kworker/u8:8/2150: 3 locks held by kworker/1:3/2255: #0: ffff0000c0028948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205 #1: ffff8000a0a57c20 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3205 #2: ffff800092437ee8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 2 locks held by getty/6176: #0: ffff0000cba370a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009b54b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2211 3 locks held by kworker/1:6/6461: #0: ffff0000c0028948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205 #1: ffff8000af1e7c20 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3205 #2: ffff0000dbcfd240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x270/0x32bc drivers/net/netdevsim/fib.c:1489 1 lock held by syz.3.193/7492: #0: ffff0000d8567c48 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x218/0x2a4 fs/file.c:1187 5 locks held by syz.3.193/7533: #0: ffff0000d3e7c420 (sb_writers#15){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:515 #1: ffff0000ef28c3a8 (&sb->s_type->i_mutex_key#20){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:800 [inline] #1: ffff0000ef28c3a8 (&sb->s_type->i_mutex_key#20){+.+.}-{3:3}, at: do_truncate+0x1ac/0x28c fs/open.c:63 #2: ffff0000e4c80a18 (&c->snapshot_create_lock){.+.+}-{3:3}, at: bch2_truncate+0x134/0x274 fs/bcachefs/io_misc.c:290 #3: ffff0000e4c842c0 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire+0x18/0x54 include/linux/srcu.h:150 #4: ffff0000e4ca6690 (&c->gc_lock){++++}-{3:3}, at: bch2_btree_update_start+0x588/0x15ac fs/bcachefs/btree_update_interior.c:1197 2 locks held by bch-reclaim/loo/7522: 7 locks held by syz-executor/8520: #0: ffff0000d77fc420 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2882 [inline] #0: ffff0000d77fc420 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x368/0xc80 fs/read_write.c:586 #1: ffff0000cbdc2088 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1c8/0x48c fs/kernfs/file.c:325 #2: ffff0000c59590f8 (kn->active#46){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1e4/0x48c fs/kernfs/file.c:326 #3: ffff800091592148 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: new_device_store+0x170/0x704 drivers/net/netdevsim/bus.c:166 #4: ffff0000ec36a0e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline] #4: ffff0000ec36a0e8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x90/0x434 drivers/base/dd.c:1004 #5: ffff0000dbcfe250 (&devlink->lock_key#16){+.+.}-{3:3}, at: devl_lock+0x24/0x34 net/devlink/core.c:276 #6: ffff800092437ee8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 4 locks held by syz-executor/8524: #0: ffff0000d77fc420 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2882 [inline] #0: ffff0000d77fc420 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x368/0xc80 fs/read_write.c:586 #1: ffff0000cd593488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1c8/0x48c fs/kernfs/file.c:325 #2: ffff0000c59591e8 (kn->active#45){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1e4/0x48c fs/kernfs/file.c:326 #3: ffff800091592148 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xec/0x39c drivers/net/netdevsim/bus.c:216 1 lock held by syz-executor/8695: #0: ffff800092437ee8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff800092437ee8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x5e8/0xa9c net/core/rtnetlink.c:6644 1 lock held by syz-executor/8698: #0: ffff800092437ee8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff800092437ee8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x5e8/0xa9c net/core/rtnetlink.c:6644 2 locks held by syz-executor/8701: #0: ffff800092437ee8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff800092437ee8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x5e8/0xa9c net/core/rtnetlink.c:6644 #1: ffff80008f7532f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:296 [inline] #1: ffff80008f7532f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x354/0x674 kernel/rcu/tree_exp.h:958 =============================================