INFO: task syz-executor:6493 blocked for more than 143 seconds. Not tainted 6.15.0-rc2-syzkaller-gc72692105976 #0 Blocked by coredump. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:0 pid:6493 tgid:6493 ppid:1 task_flags:0x40054c flags:0x0000000d Call trace: __switch_to+0x404/0x778 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5382 [inline] __schedule+0x13b0/0x28d4 kernel/sched/core.c:6767 __schedule_loop kernel/sched/core.c:6845 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6860 xlog_wait+0x114/0x1a4 fs/xfs/xfs_log_priv.h:588 xlog_wait_on_iclog+0x2f8/0x56c fs/xfs/xfs_log.c:841 xfs_log_force+0x478/0x94c fs/xfs/xfs_log.c:2967 xfs_fs_sync_fs+0x120/0x400 fs/xfs/xfs_super.c:815 sync_filesystem+0x1a0/0x218 fs/sync.c:66 generic_shutdown_super+0x70/0x2b8 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+0x31c/0x3ac fs/namespace.c:1435 __cleanup_mnt+0x20/0x30 fs/namespace.c:1442 task_work_run+0x1dc/0x260 kernel/task_work.c:227 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0x4e8/0x1998 kernel/exit.c:953 do_group_exit+0x194/0x22c kernel/exit.c:1102 get_signal+0x11dc/0x12f8 kernel/signal.c:3034 do_signal+0x264/0x36cc arch/arm64/kernel/signal.c:1615 do_notify_resume+0x78/0x1f8 arch/arm64/kernel/entry-common.c:148 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+0xb0/0x150 arch/arm64/kernel/entry-common.c:745 el0t_64_sync_handler+0x78/0x108 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: 3 locks held by kworker/u8:0/12: 3 locks held by kworker/u8:1/14: 1 lock held by khungtaskd/32: #0: ffff80008f4c7c60 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330 3 locks held by kworker/u8:2/44: 3 locks held by kworker/u8:3/45: 3 locks held by kworker/u8:4/177: 3 locks held by kworker/u8:5/292: 3 locks held by kworker/u8:6/663: 3 locks held by kworker/u8:7/745: 3 locks held by kworker/u8:8/2213: 3 locks held by kworker/R-ipv6_/4140: #0: ffff0000d1286948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212 #1: ffff80009f537ba0 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212 #2: ffff800092445fe8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 3 locks held by kworker/R-bat_e/4221: 3 locks held by kworker/R-ext4-/6070: #0: ffff0000d7e44948 ((wq_completion)ext4-rsv-conversion){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212 #1: ffff80009c477ba0 ((work_completion)(&ei->i_rsv_conversion_work)){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212 #2: ffff0000d7fb8950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xe4c/0x10dc fs/jbd2/transaction.c:442 1 lock held by syslogd/6089: 1 lock held by klogd/6093: 2 locks held by udevd/6104: 2 locks held by dhcpcd/6157: 1 lock held by dhcpcd/6158: 2 locks held by getty/6241: #0: ffff0000d7f580a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009b58e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfa0 drivers/tty/n_tty.c:2222 1 lock held by syz-executor/6487: 4 locks held by syz-executor/6488: 4 locks held by syz-executor/6492: 1 lock held by syz-executor/6493: #0: ffff0000dc13c0e0 (&type->s_umount_key#59){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff0000dc13c0e0 (&type->s_umount_key#59){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff0000dc13c0e0 (&type->s_umount_key#59){++++}-{4:4}, at: deactivate_super+0xd8/0x100 fs/super.c:505 3 locks held by syz-executor/6496: 2 locks held by kworker/1:3/6540: 2 locks held by kworker/1:6/6543: 4 locks held by kworker/0:5/6561: #0: ffff0000c0028d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212 #1: ffff8000a3be7bc0 (reg_work){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212 #2: ffff800092445fe8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 #3: ffff0000d4860768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: class_wiphy_constructor include/net/cfg80211.h:6092 [inline] #3: ffff0000d4860768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: reg_process_self_managed_hints+0xc4/0x1c0 net/wireless/reg.c:3209 2 locks held by kworker/1:7/6563: 5 locks held by kworker/u8:9/6583: 3 locks held by kworker/u8:10/6584: 4 locks held by kworker/u8:11/6963: 3 locks held by kworker/u8:12/6964: #0: ffff0000c0031948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212 #1: ffff8000a21d7bc0 ((crda_timeout).work){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212 #2: ffff800092445fe8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 3 locks held by kworker/u8:13/6965: #0: ffff0000c0031948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212 #1: ffff8000a3267bc0 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212 #2: ffff800092445fe8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 2 locks held by syz-executor/6966: =============================================