INFO: task syz.0.17:6718 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.17 state:D stack:0 pid:6718 tgid:6718 ppid:6657 task_flags:0x440140 flags:0x00800011 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 Showing all locks held in the system: 2 locks held by kworker/0:0/9: #0: ffff0000cc6c4948 ((wq_completion)xfs-sync/loop2){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3237 #1: ffff800097a57be0 ((work_completion)(&(&log->l_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3237 2 locks held by kworker/0:1/11: #0: ffff0000dcc09d48 ((wq_completion)xfs-sync/loop4){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3237 #1: ffff800097a77be0 ((work_completion)(&(&log->l_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3237 2 locks held by kworker/1:0/24: #0: ffff0000cc2d9d48 ((wq_completion)xfs-sync/loop0){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3237 #1: ffff800097b57be0 ((work_completion)(&(&log->l_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3237 1 lock held by khungtaskd/32: #0: ffff80008f79b760 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330 2 locks held by kworker/u8:4/242: 2 locks held by getty/6336: #0: ffff0000d31a90a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009bb5b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfa4 drivers/tty/n_tty.c:2222 2 locks held by kworker/0:3/6568: #0: ffff0000ceef5d48 ((wq_completion)xfs-sync/loop1){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3237 #1: ffff8000a4917be0 ((work_completion)(&(&log->l_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3237 2 locks held by kworker/1:3/6632: #0: ffff0000d964ed48 ((wq_completion)xfs-sync/loop6){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3237 #1: ffff8000a18c7be0 ((work_completion)(&(&log->l_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3237 3 locks held by syz.0.17/6718: #0: ffff0000c8a7e420 (sb_writers#11){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:499 #1: ffff0000f59db7b0 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline] #1: ffff0000f59db7b0 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: vfs_setxattr+0x138/0x2ac fs/xattr.c:320 #2: ffff0000c8a7e610 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc+0xb4/0x898 fs/xfs/xfs_trans.c:256 3 locks held by syz.1.18/6752: #0: ffff0000ce2da420 (sb_writers#11){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:499 #1: ffff0000f59de4b0 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline] #1: ffff0000f59de4b0 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: vfs_setxattr+0x138/0x2ac fs/xattr.c:320 #2: ffff0000ce2da610 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc+0xb4/0x898 fs/xfs/xfs_trans.c:256 3 locks held by syz.2.19/6783: #0: ffff0000cd88e420 (sb_writers#11){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:499 #1: ffff0000e37fce30 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline] #1: ffff0000e37fce30 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: vfs_setxattr+0x138/0x2ac fs/xattr.c:320 #2: ffff0000cd88e610 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc+0xb4/0x898 fs/xfs/xfs_trans.c:256 3 locks held by syz.3.20/6820: #0: ffff0000c8e4c420 (sb_writers#11){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:499 #1: ffff0000e36837b0 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline] #1: ffff0000e36837b0 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: vfs_setxattr+0x138/0x2ac fs/xattr.c:320 #2: ffff0000c8e4c610 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc+0xb4/0x898 fs/xfs/xfs_trans.c:256 2 locks held by kworker/1:5/6864: #0: ffff0000dd560d48 ((wq_completion)xfs-sync/loop3){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3237 #1: ffff8000a01b7be0 ((work_completion)(&(&log->l_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3237 3 locks held by syz.4.21/6865: #0: ffff0000d16da420 (sb_writers#11){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:499 #1: ffff0000e36864b0 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline] #1: ffff0000e36864b0 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: vfs_setxattr+0x138/0x2ac fs/xattr.c:320 #2: ffff0000d16da610 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc+0xb4/0x898 fs/xfs/xfs_trans.c:256 3 locks held by syz.5.22/6904: #0: ffff0000db860420 (sb_writers#11){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:499 #1: ffff0000f5808ab0 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline] #1: ffff0000f5808ab0 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: vfs_setxattr+0x138/0x2ac fs/xattr.c:320 #2: ffff0000db860610 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc+0xb4/0x898 fs/xfs/xfs_trans.c:256 3 locks held by syz.6.23/6945: #0: ffff0000f3984420 (sb_writers#11){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:499 #1: ffff0000f580d5b0 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline] #1: ffff0000f580d5b0 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: vfs_setxattr+0x138/0x2ac fs/xattr.c:320 #2: ffff0000f3984610 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc+0xb4/0x898 fs/xfs/xfs_trans.c:256 3 locks held by syz.7.24/6989: #0: ffff0000f3fdc420 (sb_writers#11){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:499 #1: ffff0000e36828b0 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline] #1: ffff0000e36828b0 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: vfs_setxattr+0x138/0x2ac fs/xattr.c:320 #2: ffff0000f3fdc610 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc+0xb4/0x898 fs/xfs/xfs_trans.c:256 2 locks held by kworker/1:6/6999: #0: ffff0000c5b0b148 ((wq_completion)xfs-sync/loop5){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3237 #1: ffff80009dd27be0 ((work_completion)(&(&log->l_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3237 3 locks held by syz.8.25/7033: #0: ffff000100458420 (sb_writers#11){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:499 #1: ffff0000f580c6b0 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline] #1: ffff0000f580c6b0 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: vfs_setxattr+0x138/0x2ac fs/xattr.c:320 #2: ffff000100458610 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc+0xb4/0x898 fs/xfs/xfs_trans.c:256 3 locks held by syz.9.26/7073: #0: ffff00010004c420 (sb_writers#11){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:499 #1: ffff0000f59db030 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline] #1: ffff0000f59db030 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: vfs_setxattr+0x138/0x2ac fs/xattr.c:320 #2: ffff00010004c610 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc+0xb4/0x898 fs/xfs/xfs_trans.c:256 7 locks held by syz-executor/7085: #0: ffff0000d87e4420 (sb_writers#6){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:3113 [inline] #0: ffff0000d87e4420 (sb_writers#6){.+.+}-{0:0}, at: vfs_write+0x24c/0xa3c fs/read_write.c:682 #1: ffff0000d2018088 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1b4/0x4d0 fs/kernfs/file.c:343 #2: ffff0000cb71bb48 (kn->active#55){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline] #2: ffff0000cb71bb48 (kn->active#55){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1f4/0x4d0 fs/kernfs/file.c:344 #3: ffff8000918d45c8 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd4/0x31c drivers/net/netdevsim/bus.c:234 #4: ffff0000d54540e8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:914 [inline] #4: ffff0000d54540e8 (&dev->mutex){....}-{4:4}, at: __device_driver_lock drivers/base/dd.c:1096 [inline] #4: ffff0000d54540e8 (&dev->mutex){....}-{4:4}, at: device_release_driver_internal+0x9c/0x68c drivers/base/dd.c:1294 #5: ffff0000d5455250 (&devlink->lock_key#2){+.+.}-{4:4}, at: devl_lock+0x24/0x34 net/devlink/core.c:276 #6: ffff80008f7a1100 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x58/0x528 kernel/rcu/tree.c:3820 =============================================