INFO: task syz-executor.4:7018 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-executor.4 state:D stack:0 pid:7018 tgid:7011 ppid:6256 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 INFO: task syz-executor.4:7105 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-executor.4 state:D stack:0 pid:7105 tgid:7011 ppid:6256 flags:0x00000005 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_icreate+0xc8/0x290 fs/xfs/xfs_trans.c:1320 xfs_create+0x5fc/0xfd0 fs/xfs/xfs_inode.c:1062 xfs_generic_create+0x3c8/0xb10 fs/xfs/xfs_iops.c:199 xfs_vn_create+0x44/0x58 fs/xfs/xfs_iops.c:275 lookup_open fs/namei.c:3497 [inline] open_last_lookups fs/namei.c:3566 [inline] path_openat+0xfb4/0x2830 fs/namei.c:3796 do_filp_open+0x1bc/0x3cc fs/namei.c:3826 do_sys_openat2+0x124/0x1b8 fs/open.c:1406 do_sys_open fs/open.c:1421 [inline] __do_sys_openat fs/open.c:1437 [inline] __se_sys_openat fs/open.c:1432 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1432 __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 INFO: task syz-executor.4:7108 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-executor.4 state:D stack:0 pid:7108 tgid:7011 ppid:6256 flags:0x00000005 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 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6895 rwsem_down_write_slowpath+0xd10/0x14c8 kernel/locking/rwsem.c:1178 __down_write_common kernel/locking/rwsem.c:1306 [inline] __down_write kernel/locking/rwsem.c:1315 [inline] down_write+0xb4/0xc0 kernel/locking/rwsem.c:1580 inode_lock include/linux/fs.h:795 [inline] open_last_lookups fs/namei.c:3563 [inline] path_openat+0x5f0/0x2830 fs/namei.c:3796 do_filp_open+0x1bc/0x3cc fs/namei.c:3826 do_sys_openat2+0x124/0x1b8 fs/open.c:1406 do_sys_open fs/open.c:1421 [inline] __do_sys_openat fs/open.c:1437 [inline] __se_sys_openat fs/open.c:1432 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1432 __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 INFO: task syz-executor.4:7120 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-executor.4 state:D stack:0 pid:7120 tgid:7011 ppid:6256 flags:0x00000005 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 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6895 rwsem_down_write_slowpath+0xd10/0x14c8 kernel/locking/rwsem.c:1178 __down_write_common kernel/locking/rwsem.c:1306 [inline] __down_write kernel/locking/rwsem.c:1315 [inline] down_write+0xb4/0xc0 kernel/locking/rwsem.c:1580 inode_lock include/linux/fs.h:795 [inline] open_last_lookups fs/namei.c:3563 [inline] path_openat+0x5f0/0x2830 fs/namei.c:3796 do_filp_open+0x1bc/0x3cc fs/namei.c:3826 do_sys_openat2+0x124/0x1b8 fs/open.c:1406 do_sys_open fs/open.c:1421 [inline] __do_sys_openat fs/open.c:1437 [inline] __se_sys_openat fs/open.c:1432 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1432 __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: 4 locks held by kworker/u8:0/10: #0: ffff0000c1871948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x668/0x15d4 kernel/workqueue.c:3228 #1: ffff800093c07c20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x6b4/0x15d4 kernel/workqueue.c:3228 #2: ffff800091bc1890 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x13c/0x9b4 net/core/net_namespace.c:591 #3: ffff0000d9bd9408 (&wg->device_update_lock){+.+.}-{3:3}, at: wg_destruct+0x11c/0x2c0 drivers/net/wireguard/device.c:249 1 lock held by khungtaskd/30: #0: ffff80008f057880 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:328 3 locks held by kworker/u8:4/195: #0: ffff0000d16cf148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x668/0x15d4 kernel/workqueue.c:3228 #1: ffff800097937c20 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6b4/0x15d4 kernel/workqueue.c:3228 #2: ffff800091bcd9a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 1 lock held by udevd/5857: 2 locks held by getty/5998: #0: ffff0000d80f80a0 (&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 2 locks held by kworker/0:4/6305: #0: ffff0000c0028948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x668/0x15d4 kernel/workqueue.c:3228 #1: ffff8000a8ce7c20 (binder_deferred_work){+.+.}-{0:0}, at: process_one_work+0x6b4/0x15d4 kernel/workqueue.c:3228 3 locks held by syz-executor.4/7018: #0: ffff0000ef89e420 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:409 #1: ffff0000df6b1a78 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline] #1: ffff0000df6b1a78 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{3:3}, at: vfs_setxattr+0x17c/0x344 fs/xattr.c:320 #2: ffff0000ef89e610 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc_inode+0x170/0x4f4 fs/xfs/xfs_trans.c:1203 3 locks held by syz-executor.4/7105: #0: ffff0000ef89e420 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:409 #1: ffff0000df6b12b8 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline] #1: ffff0000df6b12b8 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{3:3}, at: open_last_lookups fs/namei.c:3563 [inline] #1: ffff0000df6b12b8 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{3:3}, at: path_openat+0x5f0/0x2830 fs/namei.c:3796 #2: ffff0000ef89e610 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc_icreate+0xc8/0x290 fs/xfs/xfs_trans.c:1320 2 locks held by syz-executor.4/7108: #0: ffff0000ef89e420 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:409 #1: ffff0000df6b12b8 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline] #1: ffff0000df6b12b8 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{3:3}, at: open_last_lookups fs/namei.c:3563 [inline] #1: ffff0000df6b12b8 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{3:3}, at: path_openat+0x5f0/0x2830 fs/namei.c:3796 2 locks held by syz-executor.4/7120: #0: ffff0000ef89e420 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:409 #1: ffff0000df6b12b8 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline] #1: ffff0000df6b12b8 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{3:3}, at: open_last_lookups fs/namei.c:3563 [inline] #1: ffff0000df6b12b8 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{3:3}, at: path_openat+0x5f0/0x2830 fs/namei.c:3796 3 locks held by syz-executor.0/7251: #0: ffff0000dabbe420 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:409 #1: ffff0000effa3978 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline] #1: ffff0000effa3978 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{3:3}, at: vfs_setxattr+0x17c/0x344 fs/xattr.c:320 #2: ffff0000dabbe610 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc_inode+0x170/0x4f4 fs/xfs/xfs_trans.c:1203 3 locks held by syz-executor.0/7323: #0: ffff0000dabbe420 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:409 #1: ffff0000effa2238 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline] #1: ffff0000effa2238 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{3:3}, at: open_last_lookups fs/namei.c:3563 [inline] #1: ffff0000effa2238 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{3:3}, at: path_openat+0x5f0/0x2830 fs/namei.c:3796 #2: ffff0000dabbe610 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc_icreate+0xc8/0x290 fs/xfs/xfs_trans.c:1320 2 locks held by syz-executor.0/7328: #0: ffff0000dabbe420 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:409 #1: ffff0000effa2238 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline] #1: ffff0000effa2238 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{3:3}, at: open_last_lookups fs/namei.c:3563 [inline] #1: ffff0000effa2238 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{3:3}, at: path_openat+0x5f0/0x2830 fs/namei.c:3796 2 locks held by syz-executor.0/7336: #0: ffff0000dabbe420 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:409 #1: ffff0000effa2238 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline] #1: ffff0000effa2238 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{3:3}, at: open_last_lookups fs/namei.c:3563 [inline] #1: ffff0000effa2238 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{3:3}, at: path_openat+0x5f0/0x2830 fs/namei.c:3796 1 lock held by syz-executor.0/7515: #0: ffff80008f05cbb8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:323 [inline] #0: ffff80008f05cbb8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x374/0x6c8 kernel/rcu/tree_exp.h:939 4 locks held by syz-executor.3/10036: #0: ffff0000d83a6420 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2855 [inline] #0: ffff0000d83a6420 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x368/0xc3c fs/read_write.c:586 #1: ffff0000d9c3b488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1c8/0x48c fs/kernfs/file.c:325 #2: ffff0000cbf35968 (kn->active#47){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1e4/0x48c fs/kernfs/file.c:326 #3: ffff800090de4028 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: new_device_store+0x170/0x704 drivers/net/netdevsim/bus.c:166 8 locks held by syz-executor.1/10039: #0: ffff0000d83a6420 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2855 [inline] #0: ffff0000d83a6420 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x368/0xc3c fs/read_write.c:586 #1: ffff0000c591c888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1c8/0x48c fs/kernfs/file.c:325 #2: ffff0000cbf35a58 (kn->active#46){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1e4/0x48c fs/kernfs/file.c:326 #3: ffff800090de4028 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xec/0x39c drivers/net/netdevsim/bus.c:216 #4: ffff0000cee410e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline] #4: ffff0000cee410e8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1093 [inline] #4: ffff0000cee410e8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xbc/0x6a0 drivers/base/dd.c:1290 #5: ffff0000cee42250 (&devlink->lock_key#12){+.+.}-{3:3}, at: devl_lock+0x24/0x34 net/devlink/core.c:276 #6: ffff800091bcd9a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 #7: ffff80008f05cbb8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:291 [inline] #7: ffff80008f05cbb8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3a4/0x6c8 kernel/rcu/tree_exp.h:939 3 locks held by syz-executor.2/10206: =============================================