INFO: task syz-executor:6420 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-executor state:D stack:0 pid:6420 tgid:6420 ppid:1 flags:0x0000000d 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_fs_read_only+0x87c/0xf14 fs/bcachefs/super.c:346 __bch2_fs_stop+0x100/0x510 fs/bcachefs/super.c:618 bch2_put_super+0x40/0x50 fs/bcachefs/fs.c:1826 generic_shutdown_super+0x128/0x2b8 fs/super.c:642 bch2_kill_sb+0x40/0x58 fs/bcachefs/fs.c:2054 deactivate_locked_super+0xc4/0x12c fs/super.c:473 deactivate_super+0xe0/0x100 fs/super.c:506 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1373 __cleanup_mnt+0x20/0x30 fs/namespace.c:1380 task_work_run+0x230/0x2e0 kernel/task_work.c:228 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] do_notify_resume+0x178/0x1f4 arch/arm64/kernel/entry-common.c:151 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline] el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:713 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/0:0/8: #0: ffff0000c0028948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205 #1: ffff800097587c20 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3205 #2: ffff0000c5799240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x270/0x32bc drivers/net/netdevsim/fib.c:1489 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/u8:2/43: #0: ffff0000d104a148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205 #1: ffff800097cb7c20 ((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 4 locks held by kworker/u8:3/45: #0: ffff0000f3c9b948 ((wq_completion)btree_node_rewrite){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205 #1: ffff800097cd7c20 ((work_completion)(&a->work)){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3205 #2: ffff0000f3f042c0 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire+0x18/0x54 include/linux/srcu.h:150 #3: ffff0000f3f26690 (&c->gc_lock){++++}-{3:3}, at: bch2_btree_update_start+0x588/0x15ac fs/bcachefs/btree_update_interior.c:1197 3 locks held by kworker/u8:5/309: #0: ffff0000c422a148 ((wq_completion)cfg80211){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205 #1: ffff80009bec7c20 ((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/u8:8/2020: #0: ffff0000c1869948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205 #1: ffff80009fa27c20 (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: ffff0000d90e8768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: wiphy_lock include/net/cfg80211.h:6014 [inline] #4: ffff0000d90e8768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: ieee80211_stop+0x398/0x448 net/mac80211/iface.c:762 2 locks held by getty/6178: #0: ffff0000d1b750a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009b52e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2211 2 locks held by syz-executor/6420: #0: ffff0000f3c4c0e0 (&type->s_umount_key#64){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff0000f3c4c0e0 (&type->s_umount_key#64){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff0000f3c4c0e0 (&type->s_umount_key#64){+.+.}-{3:3}, at: deactivate_super+0xd8/0x100 fs/super.c:505 #1: ffff0000f3f00278 (&c->state_lock){+.+.}-{3:3}, at: __bch2_fs_stop+0xf8/0x510 fs/bcachefs/super.c:617 3 locks held by kworker/1:4/6464: #0: ffff0000c0028948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205 #1: ffff80009d3e7c20 (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 bch-reclaim/loo/6622: 2 locks held by kworker/u8:11/7541: 1 lock held by syz-executor/8274: #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/8511: #0: ffff0000d7f5a420 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2882 [inline] #0: ffff0000d7f5a420 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x368/0xc80 fs/read_write.c:586 #1: ffff0000c7dc4c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1c8/0x48c fs/kernfs/file.c:325 #2: ffff0000cc445878 (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: ffff0000d01690e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline] #4: ffff0000d01690e8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1094 [inline] #4: ffff0000d01690e8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xbc/0x698 drivers/base/dd.c:1292 #5: ffff0000f6d2c250 (&devlink->lock_key#12){+.+.}-{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 3 locks held by udevd/8603: 7 locks held by syz.3.347/8784: #0: ffff80008f62b000 (console_lock){+.+.}-{0:0}, at: do_fb_ioctl+0x704/0xd24 drivers/video/fbdev/core/fb_chrdev.c:86 #1: ffff0000c9486078 (&fb_info->lock){+.+.}-{3:3}, at: lock_fb_info include/linux/fb.h:616 [inline] #1: ffff0000c9486078 (&fb_info->lock){+.+.}-{3:3}, at: do_fb_ioctl+0x714/0xd24 drivers/video/fbdev/core/fb_chrdev.c:87 #2: ffff0000c257e280 (&helper->lock){+.+.}-{3:3}, at: drm_fb_helper_pan_display+0xc0/0xa90 drivers/gpu/drm/drm_fb_helper.c:1430 #3: ffff0000c91c41b0 (&dev->master_mutex){+.+.}-{3:3}, at: drm_master_internal_acquire+0x28/0x7c drivers/gpu/drm/drm_auth.c:452 #4: ffff0000c257e098 (&client->modeset_mutex){+.+.}-{3:3}, at: drm_client_modeset_commit_locked+0x54/0x4a8 drivers/gpu/drm/drm_client_modeset.c:1169 #5: ffff80009b937570 (crtc_ww_class_acquire){+.+.}-{0:0}, at: drm_client_modeset_commit_atomic+0xe0/0x730 drivers/gpu/drm/drm_client_modeset.c:1007 #6: ffff0000c9216108 (crtc_ww_class_mutex){+.+.}-{3:3}, at: modeset_lock+0x278/0x59c drivers/gpu/drm/drm_modeset_lock.c:314 1 lock held by dhcpcd-run-hook/8783: =============================================