INFO: task syz.1.59:6783 blocked for more than 143 seconds. Not tainted 6.12.0-rc4-syzkaller-g526116b79e8c #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.59 state:D stack:0 pid:6783 tgid:6782 ppid:6422 flags:0x00000009 Call trace: __switch_to+0x428/0x860 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5328 [inline] __schedule+0x16f8/0x2804 kernel/sched/core.c:6690 __schedule_loop kernel/sched/core.c:6767 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6782 xlog_grant_head_wait+0x404/0xb9c fs/xfs/xfs_log.c:266 xlog_grant_head_check+0x264/0x434 xfs_log_reserve+0x330/0xa14 fs/xfs/xfs_log.c:436 xfs_trans_reserve+0x1cc/0x57c fs/xfs/xfs_trans.c:195 xfs_trans_alloc+0x410/0x940 fs/xfs/xfs_trans.c:284 xfs_trans_alloc_inode+0x170/0x4f4 fs/xfs/xfs_trans.c:1077 xfs_attr_set+0x748/0x1178 fs/xfs/libxfs/xfs_attr.c:1097 xfs_attr_change+0x254/0x334 fs/xfs/xfs_xattr.c:129 xfs_xattr_set+0x198/0x2cc fs/xfs/xfs_xattr.c:187 __vfs_setxattr+0x3d8/0x400 fs/xattr.c:200 __vfs_setxattr_noperm+0x110/0x578 fs/xattr.c:234 __vfs_setxattr_locked+0x1ec/0x218 fs/xattr.c:295 vfs_setxattr+0x1a8/0x344 fs/xattr.c:321 do_setxattr fs/xattr.c:629 [inline] path_setxattr+0x30c/0x428 fs/xattr.c:658 __do_sys_lsetxattr fs/xattr.c:683 [inline] __se_sys_lsetxattr fs/xattr.c:679 [inline] __arm64_sys_lsetxattr+0xbc/0xd8 fs/xattr.c:679 __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:744 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.1.59:6833 blocked for more than 143 seconds. Not tainted 6.12.0-rc4-syzkaller-g526116b79e8c #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.59 state:D stack:0 pid:6833 tgid:6782 ppid:6422 flags:0x00000009 Call trace: __switch_to+0x428/0x860 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5328 [inline] __schedule+0x16f8/0x2804 kernel/sched/core.c:6690 __schedule_loop kernel/sched/core.c:6767 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6782 xlog_grant_head_wait+0x404/0xb9c fs/xfs/xfs_log.c:266 xlog_grant_head_check+0x264/0x434 xfs_log_reserve+0x330/0xa14 fs/xfs/xfs_log.c:436 xfs_trans_reserve+0x1cc/0x57c fs/xfs/xfs_trans.c:195 xfs_trans_alloc+0x410/0x940 fs/xfs/xfs_trans.c:284 xfs_vn_update_time+0x1d0/0x608 fs/xfs/xfs_iops.c:1083 inode_update_time fs/inode.c:2055 [inline] touch_atime+0x348/0xb10 fs/inode.c:2128 file_accessed include/linux/fs.h:2528 [inline] iterate_dir+0x470/0x648 fs/readdir.c:111 __do_sys_getdents64 fs/readdir.c:407 [inline] __se_sys_getdents64 fs/readdir.c:392 [inline] __arm64_sys_getdents64+0x1c4/0x48c fs/readdir.c:392 __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:744 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: 3 locks held by kworker/0:1/9: #0: ffff0000c0028948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x628/0x1600 kernel/workqueue.c:3203 #1: ffff800097897c20 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x6bc/0x1600 kernel/workqueue.c:3203 #2: ffff800092712728 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 1 lock held by khungtaskd/31: #0: ffff80008f9e0520 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:336 3 locks held by kworker/u8:3/44: #0: ffff0000c0031148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x628/0x1600 kernel/workqueue.c:3203 #1: ffff800097fc7c20 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x6bc/0x1600 kernel/workqueue.c:3203 #2: ffff800092712728 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 3 locks held by kworker/u8:4/45: #0: ffff0000d2370948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x628/0x1600 kernel/workqueue.c:3203 #1: ffff800097fd7c20 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6bc/0x1600 kernel/workqueue.c:3203 #2: ffff800092712728 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 3 locks held by kworker/u8:7/5936: #0: ffff0000c32e2948 ((wq_completion)cfg80211){+.+.}-{0:0}, at: process_one_work+0x628/0x1600 kernel/workqueue.c:3203 #1: ffff80009bd47c20 ((work_completion)(&(&rdev->dfs_update_channels_wk)->work)){+.+.}-{0:0}, at: process_one_work+0x6bc/0x1600 kernel/workqueue.c:3203 #2: ffff800092712728 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 2 locks held by dhcpcd/6088: #0: ffff0000c26f56c8 (nlk_cb_mutex-ROUTE){+.+.}-{3:3}, at: __netlink_dump_start+0xf8/0x720 net/netlink/af_netlink.c:2405 #1: ffff800092712728 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #1: ffff800092712728 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_dumpit+0x8c/0x1d0 net/core/rtnetlink.c:6534 2 locks held by getty/6183: #0: ffff0000d7c010a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009b7ee2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2211 3 locks held by kworker/1:3/6477: #0: ffff0000c0028948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x628/0x1600 kernel/workqueue.c:3203 #1: ffff8000a3cb7c20 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x6bc/0x1600 kernel/workqueue.c:3203 #2: ffff0000edd59240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x270/0x32bc drivers/net/netdevsim/fib.c:1488 2 locks held by kworker/0:6/6478: #0: ffff0000cc678148 ((wq_completion)xfs-sync/loop1){+.+.}-{0:0}, at: process_one_work+0x628/0x1600 kernel/workqueue.c:3203 #1: ffff8000a3ca7c20 ((work_completion)(&(&log->l_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6bc/0x1600 kernel/workqueue.c:3203 2 locks held by kworker/u8:8/6534: 3 locks held by syz.1.59/6783: #0: ffff0000e97bc420 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:515 #1: ffff0000ef5148f0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline] #1: ffff0000ef5148f0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: vfs_setxattr+0x17c/0x344 fs/xattr.c:320 #2: ffff0000e97bc610 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc_inode+0x170/0x4f4 fs/xfs/xfs_trans.c:1077 4 locks held by syz.1.59/6833: #0: ffff0000d1511b38 (&f->f_pos_lock){+.+.}-{3:3}, at: fdget_pos+0x214/0x2a0 fs/file.c:1160 #1: ffff0000ef5fc8f0 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{3:3}, at: iterate_dir+0x1c4/0x648 fs/readdir.c:101 #2: ffff0000e97bc420 (sb_writers#13){.+.+}-{0:0}, at: file_accessed include/linux/fs.h:2528 [inline] #2: ffff0000e97bc420 (sb_writers#13){.+.+}-{0:0}, at: iterate_dir+0x470/0x648 fs/readdir.c:111 #3: ffff0000e97bc610 (sb_internal#2){.+.+}-{0:0}, at: xfs_vn_update_time+0x1d0/0x608 fs/xfs/xfs_iops.c:1083 5 locks held by kworker/u8:11/7219: #0: ffff0000c1891948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x628/0x1600 kernel/workqueue.c:3203 #1: ffff8000a0d27c20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x6bc/0x1600 kernel/workqueue.c:3203 #2: ffff800092706210 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x13c/0x9b4 net/core/net_namespace.c:580 #3: ffff800092712728 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 #4: ffff80008f9e5a78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline] #4: ffff80008f9e5a78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x354/0x674 kernel/rcu/tree_exp.h:976 1 lock held by syz-executor/8504: #0: ffff800092712728 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff800092712728 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x5e8/0xa9c net/core/rtnetlink.c:6672 1 lock held by syz-executor/8507: #0: ffff800092712728 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff800092712728 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x5e8/0xa9c net/core/rtnetlink.c:6672 2 locks held by syz.3.316/8707: 2 locks held by syz.4.319/8715: 1 lock held by syz.1.320/8741: #0: ffff800092712728 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 =============================================