syzbot

INFO: task syz-executor135:6259 blocked for more than 143 seconds.
      Not tainted 6.9.0-rc3-syzkaller-gb5d2afe8745b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor135 state:D stack:0     pid:6259  tgid:6259  ppid:6258   flags:0x0000000d
Call trace:
 __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553
 context_switch kernel/sched/core.c:5409 [inline]
 __schedule+0x14bc/0x24ec kernel/sched/core.c:6746
 __schedule_loop kernel/sched/core.c:6823 [inline]
 schedule+0xbc/0x238 kernel/sched/core.c:6838
 xlog_grant_head_wait+0x3a8/0xaf0 fs/xfs/xfs_log.c:307
 xlog_grant_head_check+0x218/0x3d8
 xfs_log_reserve+0x39c/0xc28 fs/xfs/xfs_log.c:486
 xfs_trans_reserve+0x1f4/0x5e0 fs/xfs/xfs_trans.c:195
 xfs_trans_alloc+0x410/0x950 fs/xfs/xfs_trans.c:284
 xfs_trans_alloc_inode+0x170/0x4f4 fs/xfs/xfs_trans.c:1203
 xfs_attr_set+0x8e8/0x13d0 fs/xfs/libxfs/xfs_attr.c:983
 xfs_attr_change fs/xfs/xfs_xattr.c:117 [inline]
 xfs_xattr_set+0x1a8/0x30c fs/xfs/xfs_xattr.c:165
 __vfs_setxattr+0x3d8/0x400 fs/xattr.c:200
 __vfs_setxattr_noperm+0x110/0x528 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]
 setxattr+0x208/0x29c fs/xattr.c:652
 path_setxattr+0x17c/0x258 fs/xattr.c:671
 __do_sys_lsetxattr fs/xattr.c:694 [inline]
 __se_sys_lsetxattr fs/xattr.c:690 [inline]
 __arm64_sys_lsetxattr+0xbc/0xd8 fs/xattr.c:690
 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712
 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:
1 lock held by khungtaskd/30:
 #0: ffff80008f057880 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:328
2 locks held by getty/6007:
 #0: ffff0000d27d10a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff800097b9b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2201
3 locks held by syz-executor135/6259:
 #0: ffff0000d8830420 (sb_writers#8){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:409
 #1: ffff0000dbb81a78 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline]
 #1: ffff0000dbb81a78 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{3:3}, at: vfs_setxattr+0x17c/0x344 fs/xattr.c:320
 #2: ffff0000d8830610 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc_inode+0x170/0x4f4 fs/xfs/xfs_trans.c:1203

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