INFO: task syz-executor:6480 blocked for more than 148 seconds. Not tainted 6.15.0-rc1-syzkaller-g2fe2b96c3818 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:0 pid:6480 tgid:6480 ppid:6475 task_flags:0x400140 flags:0x0000000c Call trace: __switch_to+0x414/0x788 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5382 [inline] __schedule+0x16a4/0x2c80 kernel/sched/core.c:6767 __schedule_loop kernel/sched/core.c:6845 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6860 xlog_wait+0x15c/0x1ec fs/xfs/xfs_log_priv.h:588 xlog_wait_on_iclog+0x300/0x5bc fs/xfs/xfs_log.c:841 xfs_log_force+0x47c/0x9d4 fs/xfs/xfs_log.c:2967 xfs_fs_sync_fs+0x120/0x450 fs/xfs/xfs_super.c:815 sync_filesystem+0x1a0/0x218 fs/sync.c:66 generic_shutdown_super+0x70/0x2bc fs/super.c:621 kill_block_super+0x44/0x90 fs/super.c:1710 xfs_kill_sb+0x20/0x58 fs/xfs/xfs_super.c:2220 deactivate_locked_super+0xc4/0x12c fs/super.c:473 deactivate_super+0xe0/0x100 fs/super.c:506 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1435 __cleanup_mnt+0x20/0x30 fs/namespace.c:1442 task_work_run+0x230/0x2e0 kernel/task_work.c:227 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:745 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 INFO: task syz-executor:6485 blocked for more than 148 seconds. Not tainted 6.15.0-rc1-syzkaller-g2fe2b96c3818 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:0 pid:6485 tgid:6485 ppid:6476 task_flags:0x400140 flags:0x00000008 Call trace: __switch_to+0x414/0x788 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5382 [inline] __schedule+0x16a4/0x2c80 kernel/sched/core.c:6767 __schedule_loop kernel/sched/core.c:6845 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6860 wb_wait_for_completion+0x154/0x284 fs/fs-writeback.c:216 __writeback_inodes_sb_nr+0x244/0x2d8 fs/fs-writeback.c:2747 writeback_inodes_sb_nr fs/fs-writeback.c:2764 [inline] writeback_inodes_sb+0x7c/0x90 fs/fs-writeback.c:2779 sync_filesystem+0xa0/0x218 fs/sync.c:54 generic_shutdown_super+0x70/0x2bc fs/super.c:621 kill_anon_super+0x4c/0x7c fs/super.c:1237 btrfs_kill_super+0x40/0x58 fs/btrfs/super.c:2100 deactivate_locked_super+0xc4/0x12c fs/super.c:473 deactivate_super+0xe0/0x100 fs/super.c:506 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1435 __cleanup_mnt+0x20/0x30 fs/namespace.c:1442 task_work_run+0x230/0x2e0 kernel/task_work.c:227 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:745 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 Showing all locks held in the system: 1 lock held by kthreadd/2: 2 locks held by kworker/0:1/10: 3 locks held by kworker/u8:0/12: 3 locks held by kworker/u8:1/13: 4 locks held by kworker/1:0/24: #0: ffff0000c0028d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x674/0x1638 kernel/workqueue.c:3212 #1: ffff800098317b80 (reg_work){+.+.}-{0:0}, at: process_one_work+0x708/0x1638 kernel/workqueue.c:3212 #2: ffff8000930815a8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 #3: ffff0000d3a08768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: class_wiphy_constructor include/net/cfg80211.h:6092 [inline] #3: ffff0000d3a08768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: reg_process_self_managed_hints+0xcc/0x1d0 net/wireless/reg.c:3209 2 locks held by kworker/1:1/26: 1 lock held by khungtaskd/32: #0: ffff800090127de0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330 2 locks held by kworker/R-write/34: 3 locks held by kworker/u8:2/44: 3 locks held by kworker/u8:3/45: 1 lock held by pr/ttyAMA0/46: 3 locks held by kworker/u8:4/156: 3 locks held by kworker/u8:5/367: 3 locks held by kworker/u8:6/502: 3 locks held by kworker/u8:7/592: 3 locks held by kworker/u8:8/676: 2 locks held by kworker/0:2/1769: 3 locks held by kworker/R-ipv6_/4127: #0: ffff0000d41db148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x674/0x1638 kernel/workqueue.c:3212 #1: ffff80009fd77b20 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x708/0x1638 kernel/workqueue.c:3212 #2: ffff8000930815a8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 5 locks held by kworker/R-bat_e/4208: 2 locks held by syslogd/6073: 1 lock held by klogd/6077: 1 lock held by udevd/6088: 3 locks held by dhcpcd/6142: 2 locks held by getty/6228: #0: ffff0000d3f7d0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009c1ce2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x46c/0x123c drivers/tty/n_tty.c:2222 1 lock held by syz-executor/6480: #0: ffff0000f226e0e0 (&type->s_umount_key#81){+.+.}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff0000f226e0e0 (&type->s_umount_key#81){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff0000f226e0e0 (&type->s_umount_key#81){+.+.}-{4:4}, at: deactivate_super+0xd8/0x100 fs/super.c:505 1 lock held by syz-executor/6484: #0: ffff0000c7a3e0e0 (&type->s_umount_key#31){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff0000c7a3e0e0 (&type->s_umount_key#31){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff0000c7a3e0e0 (&type->s_umount_key#31){++++}-{4:4}, at: deactivate_super+0xd8/0x100 fs/super.c:505 1 lock held by syz-executor/6485: #0: ffff0000cd6400e0 (&type->s_umount_key#51){+.+.}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff0000cd6400e0 (&type->s_umount_key#51){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff0000cd6400e0 (&type->s_umount_key#51){+.+.}-{4:4}, at: deactivate_super+0xd8/0x100 fs/super.c:505 1 lock held by syz-executor/6486: 1 lock held by udevadm/7003: 3 locks held by kworker/u8:9/7008: 2 locks held by kworker/u8:10/7009: 3 locks held by kworker/u8:11/7011: #0: ffff0000c0031948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x674/0x1638 kernel/workqueue.c:3212 #1: ffff8000a3567b80 ((crda_timeout).work){+.+.}-{0:0}, at: process_one_work+0x708/0x1638 kernel/workqueue.c:3212 #2: ffff8000930815a8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 3 locks held by kworker/u8:12/7012: #0: ffff0000c0031948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x674/0x1638 kernel/workqueue.c:3212 #1: ffff8000a3777b80 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x708/0x1638 kernel/workqueue.c:3212 #2: ffff8000930815a8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 3 locks held by syz-executor/7013: =============================================