INFO: task syz.2.71:6964 blocked for m INFO: task syz.2.71:6964 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.71 state:D stack:0 pid:6964 tgid:6962 ppid:6556 task_flags:0x440140 flags:0x00000011 Call trace: __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (T) context_switch kernel/sched/core.c:5325 [inline] __schedule+0x13b0/0x2864 kernel/sched/core.c:6929 __schedule_loop kernel/sched/core.c:7011 [inline] schedule+0xb4/0x230 kernel/sched/core.c:7026 xlog_grant_head_wait+0x400/0xae8 fs/xfs/xfs_log.c:267 xlog_grant_head_check+0x210/0x394 fs/xfs/xfs_log.c:-1 xfs_log_reserve+0x2c0/0x898 fs/xfs/xfs_log.c:437 xfs_trans_reserve fs/xfs/xfs_trans.c:176 [inline] xfs_trans_alloc+0x248/0x898 fs/xfs/xfs_trans.c:258 xfs_trans_alloc_inode+0x108/0x42c fs/xfs/xfs_trans.c:1076 xfs_attr_set+0x6d8/0x1020 fs/xfs/libxfs/xfs_attr.c:1098 xfs_attr_change+0x254/0x334 fs/xfs/xfs_xattr.c:128 xfs_xattr_set+0x120/0x200 fs/xfs/xfs_xattr.c:186 __vfs_setxattr+0x3d8/0x400 fs/xattr.c:200 __vfs_setxattr_noperm+0x120/0x5c4 fs/xattr.c:234 __vfs_setxattr_locked+0x1ec/0x218 fs/xattr.c:295 vfs_setxattr+0x158/0x2ac fs/xattr.c:321 do_setxattr fs/xattr.c:636 [inline] filename_setxattr+0x20c/0x4f8 fs/xattr.c:665 path_setxattrat+0x2e8/0x320 fs/xattr.c:713 __do_sys_lsetxattr fs/xattr.c:754 [inline] __se_sys_lsetxattr fs/xattr.c:750 [inline] __arm64_sys_lsetxattr+0xc0/0xdc fs/xattr.c:750 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:724 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 INFO: task syz.2.71:6993 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.71 state:D stack:0 pid:6993 tgid:6962 ppid:6556 task_flags:0x400040 flags:0x00000001 Call trace: __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (T) context_switch kernel/sched/core.c:5325 [inline] __schedule+0x13b0/0x2864 kernel/sched/core.c:6929 __schedule_loop kernel/sched/core.c:7011 [inline] schedule+0xb4/0x230 kernel/sched/core.c:7026 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:7083 rwsem_down_write_slowpath+0x6b4/0x10f4 kernel/locking/rwsem.c:1185 __down_write_common kernel/locking/rwsem.c:1317 [inline] __down_write kernel/locking/rwsem.c:1326 [inline] down_write+0xb4/0xc0 kernel/locking/rwsem.c:1591 inode_lock include/linux/fs.h:980 [inline] vfs_removexattr+0x6c/0x190 fs/xattr.c:574 removexattr fs/xattr.c:1023 [inline] filename_removexattr fs/xattr.c:1052 [inline] path_removexattrat+0x304/0x600 fs/xattr.c:1088 __do_sys_lremovexattr fs/xattr.c:1106 [inline] __se_sys_lremovexattr fs/xattr.c:1103 [inline] __arm64_sys_lremovexattr+0x64/0x7c fs/xattr.c:1103 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:724 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 INFO: task syz.2.71:6994 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.71 state:D stack:0 pid:6994 tgid:6962 ppid:6556 task_flags:0x400040 flags:0x00000001 Call trace: __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (T) context_switch kernel/sched/core.c:5325 [inline] __schedule+0x13b0/0x2864 kernel/sched/core.c:6929 __schedule_loop kernel/sched/core.c:7011 [inline] schedule+0xb4/0x230 kernel/sched/core.c:7026 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:7083 rwsem_down_write_slowpath+0x6b4/0x10f4 kernel/locking/rwsem.c:1185 __down_write_common kernel/locking/rwsem.c:1317 [inline] __down_write kernel/locking/rwsem.c:1326 [inline] down_write_nested+0xc0/0xcc kernel/locking/rwsem.c:1707 xfs_ilock+0x120/0x3d0 fs/xfs/xfs_inode.c:149 __xfs_file_fallocate+0xe0/0x11e4 fs/xfs/xfs_file.c:1351 xfs_file_fallocate+0x228/0x2f4 fs/xfs/xfs_file.c:1446 vfs_fallocate+0x52c/0x668 fs/open.c:342 ioctl_preallocate fs/ioctl.c:289 [inline] file_ioctl+0x584/0x75c fs/ioctl.c:-1 do_vfs_ioctl+0xa10/0x1834 fs/ioctl.c:576 __do_sys_ioctl fs/ioctl.c:595 [inline] __se_sys_ioctl fs/ioctl.c:583 [inline] __arm64_sys_ioctl+0xe4/0x1c4 fs/ioctl.c:583 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:724 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 INFO: task syz.2.71:6998 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.71 state:D stack:0 pid:6998 tgid:6962 ppid:6556 task_flags:0x440040 flags:0x00000001 Call trace: __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (T) context_switch kernel/sched/core.c:5325 [inline] __schedule+0x13b0/0x2864 kernel/sched/core.c:6929 __schedule_loop kernel/sched/core.c:7011 [inline] schedule+0xb4/0x230 kernel/sched/core.c:7026 xlog_grant_head_wait+0x400/0xae8 fs/xfs/xfs_log.c:267 xlog_grant_head_check+0x210/0x394 fs/xfs/xfs_log.c:-1 xfs_log_reserve+0x2c0/0x898 fs/xfs/xfs_log.c:437 xfs_trans_reserve fs/xfs/xfs_trans.c:176 [inline] xfs_trans_alloc+0x248/0x898 fs/xfs/xfs_trans.c:258 xfs_trans_alloc_icreate+0x70/0x1f0 fs/xfs/xfs_trans.c:1201 xfs_create+0x428/0x998 fs/xfs/xfs_inode.c:700 xfs_generic_create+0x2e8/0x8f4 fs/xfs/xfs_iops.c:216 xfs_vn_mkdir+0x44/0x5c fs/xfs/xfs_iops.c:309 vfs_mkdir+0x284/0x424 fs/namei.c:4453 do_mkdirat+0x1f8/0x4c8 fs/namei.c:4486 __do_sys_mkdirat fs/namei.c:4503 [inline] __se_sys_mkdirat fs/namei.c:4501 [inline] __arm64_sys_mkdirat+0x8c/0xa4 fs/namei.c:4501 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:724 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 Showing all locks held in the system: 4 locks held by kworker/u8:0/12: 1 lock held by khungtaskd/32: #0: ffff80008f78ba20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330 2 locks held by pr/ttyAMA-1/43: 2 locks held by getty/6338: #0: ffff0000d761a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009bb3b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfa4 drivers/tty/n_tty.c:2222 2 locks held by kworker/0:3/6554: #0: ffff0000d7f2e548 ((wq_completion)xfs-sync/loop2){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3237 #1: ffff8000a0487be0 ((work_completion)(&(&log->l_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3237 3 locks held by syz.2.71/6964: #0: ffff0000c5f6c420 (sb_writers#14){++++}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:508 #1: ffff0000f7ef55b0 (&sb->s_type->i_mutex_key#22){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline] #1: ffff0000f7ef55b0 (&sb->s_type->i_mutex_key#22){++++}-{4:4}, at: vfs_setxattr+0x138/0x2ac fs/xattr.c:320 #2: ffff0000c5f6c610 (sb_internal#5){++++}-{0:0}, at: xfs_trans_alloc+0xb4/0x898 fs/xfs/xfs_trans.c:256 2 locks held by syz.2.71/6993: #0: ffff0000c5f6c420 (sb_writers#14){++++}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:508 #1: ffff0000f7ef55b0 (&sb->s_type->i_mutex_key#22){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline] #1: ffff0000f7ef55b0 (&sb->s_type->i_mutex_key#22){++++}-{4:4}, at: vfs_removexattr+0x6c/0x190 fs/xattr.c:574 2 locks held by syz.2.71/6994: #0: ffff0000c5f6c420 (sb_writers#14){++++}-{0:0}, at: file_start_write include/linux/fs.h:3111 [inline] #0: ffff0000c5f6c420 (sb_writers#14){++++}-{0:0}, at: vfs_fallocate+0x4d0/0x668 fs/open.c:341 #1: ffff0000f7ef55b0 (&sb->s_type->i_mutex_key#22){++++}-{4:4}, at: xfs_ilock+0x120/0x3d0 fs/xfs/xfs_inode.c:149 3 locks held by syz.2.71/6998: #0: ffff0000c5f6c420 (sb_writers#14){++++}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:508 #1: ffff0000f7ef3f30 (&inode->i_sb->s_type->i_mutex_dir_key/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:1025 [inline] #1: ffff0000f7ef3f30 (&inode->i_sb->s_type->i_mutex_dir_key/1){+.+.}-{4:4}, at: filename_create+0x1ac/0x32c fs/namei.c:4226 #2: ffff0000c5f6c610 (sb_internal#5){++++}-{0:0}, at: xfs_trans_alloc+0xb4/0x898 fs/xfs/xfs_trans.c:256 =============================================