INFO: task syz.2.25:6668 blocked for more than 143 seconds. Tainted: G W 6.12.0-rc3-syzkaller-gc7e6f5e2fb8d #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.25 state:D stack:0 pid:6668 tgid:6667 ppid:6424 flags:0x00000009 Call trace: __switch_to+0x428/0x860 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5322 [inline] __schedule+0x14bc/0x2718 kernel/sched/core.c:6682 __schedule_loop kernel/sched/core.c:6759 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6774 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 Showing all locks held in the system: 1 lock held by khungtaskd/31: #0: ffff80008f9d0520 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:336 4 locks held by kworker/u8:5/276: 3 locks held by kworker/u8:6/303: #0: ffff0000c0031148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x628/0x1600 kernel/workqueue.c:3203 #1: ffff80009bf37c20 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x6bc/0x1600 kernel/workqueue.c:3203 #2: ffff800092701b68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 2 locks held by getty/6178: #0: ffff0000d29c60a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009b7fb2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2211 2 locks held by kworker/0:6/6482: #0: ffff0000d9615148 ((wq_completion)xfs-sync/loop2){+.+.}-{0:0}, at: process_one_work+0x628/0x1600 kernel/workqueue.c:3203 #1: ffff8000a3c17c20 ((work_completion)(&(&log->l_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6bc/0x1600 kernel/workqueue.c:3203 3 locks held by syz.2.25/6668: #0: ffff0000d09c4420 (sb_writers#15){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:515 #1: ffff0000dcc76030 (&sb->s_type->i_mutex_key#23){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline] #1: ffff0000dcc76030 (&sb->s_type->i_mutex_key#23){+.+.}-{3:3}, at: vfs_setxattr+0x17c/0x344 fs/xattr.c:320 #2: ffff0000d09c4610 (sb_internal#3){.+.+}-{0:0}, at: xfs_trans_alloc_inode+0x170/0x4f4 fs/xfs/xfs_trans.c:1077 3 locks held by kworker/u8:11/8441: #0: ffff0000d2649148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x628/0x1600 kernel/workqueue.c:3203 #1: ffff80009eee7c20 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6bc/0x1600 kernel/workqueue.c:3203 #2: ffff800092701b68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 1 lock held by syz-executor/8855: #0: ffff800092701b68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff800092701b68 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x5e8/0xa9c net/core/rtnetlink.c:6672 1 lock held by syz-executor/9002: #0: ffff800092701b68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff800092701b68 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x5e8/0xa9c net/core/rtnetlink.c:6672 1 lock held by syz.3.495/9350: #0: ffff800092701b68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff800092701b68 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x5e8/0xa9c net/core/rtnetlink.c:6672 3 locks held by syz.3.495/9355: #0: ffff800092762f10 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff800092762dc8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffff800092762dc8 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffff800092762dc8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x10c/0xbb0 net/netlink/genetlink.c:1209 #2: ffff800092701b68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 2 locks held by syz.3.495/9357: #0: ffff800092762f10 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff800092762dc8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffff800092762dc8 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffff800092762dc8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x10c/0xbb0 net/netlink/genetlink.c:1209 2 locks held by syz.4.497/9383: #0: ffff800092762f10 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff800092762dc8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffff800092762dc8 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffff800092762dc8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x10c/0xbb0 net/netlink/genetlink.c:1209 2 locks held by syz.4.497/9385: #0: ffff0000c92b76c8 (nlk_cb_mutex-ROUTE){+.+.}-{3:3}, at: __netlink_dump_start+0xf8/0x720 net/netlink/af_netlink.c:2405 #1: ffff800092701b68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #1: ffff800092701b68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_dumpit+0x8c/0x1d0 net/core/rtnetlink.c:6534 1 lock held by syz.4.497/9386: #0: ffff800092701b68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 1 lock held by syz.4.497/9387: #0: ffff800092701b68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 2 locks held by syz.1.501/9400: #0: ffff800092762f10 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff800092762dc8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffff800092762dc8 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffff800092762dc8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x10c/0xbb0 net/netlink/genetlink.c:1209 =============================================