INFO: task bch-reclaim/loo:6633 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:bch-reclaim/loo state:D stack:0 pid:6633 tgid:6633 ppid:2 flags:0x00000008 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 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6678 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:684 __mutex_lock kernel/locking/mutex.c:752 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:804 bch2_journal_reclaim_thread+0x144/0x4b8 fs/bcachefs/journal_reclaim.c:738 kthread+0x288/0x310 kernel/kthread.c:389 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860 Showing all locks held in the system: 3 locks held by kworker/0:0/8: 2 locks held by kworker/u8:1/13: 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/u8:5/245: #0: ffff0000c41c2148 ((wq_completion)cfg80211){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205 #1: ffff80009b7d7c20 ((work_completion)(&(&rdev->dfs_update_channels_wk)->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 5 locks held by kworker/u8:6/445: #0: ffff0000c1869948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205 #1: ffff80009c297c20 (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: ffff800092437ee8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 #4: ffff80008f7532f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:296 [inline] #4: ffff80008f7532f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x354/0x674 kernel/rcu/tree_exp.h:958 2 locks held by kworker/u8:8/496: 3 locks held by kworker/u8:9/525: #0: ffff0000d16a6948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205 #1: ffff80009c937c20 ((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 3 locks held by kworker/u8:10/539: #0: ffff0000c0031148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205 #1: ffff80009c9f7c20 ((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 3 locks held by kworker/0:3/2251: 1 lock held by klogd/6017: 2 locks held by getty/6176: #0: ffff0000c30990a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009b50e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2211 2 locks held by syz-executor/6406: 5 locks held by syz-executor/6419: 1 lock held by bch-reclaim/loo/6633: #0: ffff0000f40caf28 (&j->reclaim_lock){+.+.}-{3:3}, at: bch2_journal_reclaim_thread+0x144/0x4b8 fs/bcachefs/journal_reclaim.c:738 2 locks held by syz-executor/7703: #0: ffff800092498dd0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff800092437ee8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 1 lock held by syz-executor/7795: #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 7 locks held by syz-executor/7914: #0: ffff0000d7dc6420 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2882 [inline] #0: ffff0000d7dc6420 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x368/0xc80 fs/read_write.c:586 #1: ffff0000ef71d888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1c8/0x48c fs/kernfs/file.c:325 #2: ffff0000c7a61c38 (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 #4: ffff0000c201d0e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline] #4: ffff0000c201d0e8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1094 [inline] #4: ffff0000c201d0e8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xbc/0x698 drivers/base/dd.c:1292 #5: ffff0000c201e250 (&devlink->lock_key#17){+.+.}-{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 1 lock held by syz-executor/8007: #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 4 locks held by syz.3.162/8031: 1 lock held by sed/8036: =============================================