INFO: task syz.3.20:5950 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.20 state:D stack:28072 pid:5950 ppid:5907 flags:0x00004004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5380 [inline]
__schedule+0x14d2/0x44d0 kernel/sched/core.c:6699
schedule+0xbd/0x170 kernel/sched/core.c:6773
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6832
rwsem_down_read_slowpath+0x4f8/0x840 kernel/locking/rwsem.c:1086
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x98/0x2e0 kernel/locking/rwsem.c:1522
inode_lock_shared include/linux/fs.h:814 [inline]
open_last_lookups fs/namei.c:3555 [inline]
path_openat+0x7b7/0x3190 fs/namei.c:3786
do_filp_open+0x1c5/0x3d0 fs/namei.c:3816
do_open_execat+0x133/0x3d0 fs/exec.c:924
bprm_execve+0x567/0x16f0 fs/exec.c:1867
do_execveat_common+0x51b/0x6c0 fs/exec.c:1998
do_execveat fs/exec.c:2083 [inline]
__do_sys_execveat fs/exec.c:2157 [inline]
__se_sys_execveat fs/exec.c:2151 [inline]
__x64_sys_execveat+0xc4/0xe0 fs/exec.c:2151
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f7f9cd8eba9
RSP: 002b:00007f7f9dc76038 EFLAGS: 00000246 ORIG_RAX: 0000000000000142
RAX: ffffffffffffffda RBX: 00007f7f9cfd6090 RCX: 00007f7f9cd8eba9
RDX: 0000000000000000 RSI: 0000200000000140 RDI: ffffffffffffff9c
RBP: 00007f7f9ce11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7f9cfd6128 R14: 00007f7f9cfd6090 R15: 00007fffbbf2e828
</TASK>
INFO: task syz.1.18:6011 blocked for more than 146 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.18 state:D stack:26512 pid:6011 ppid:5905 flags:0x00004004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5380 [inline]
__schedule+0x14d2/0x44d0 kernel/sched/core.c:6699
schedule+0xbd/0x170 kernel/sched/core.c:6773
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6832
rwsem_down_read_slowpath+0x4f8/0x840 kernel/locking/rwsem.c:1086
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x98/0x2e0 kernel/locking/rwsem.c:1522
inode_lock_shared include/linux/fs.h:814 [inline]
open_last_lookups fs/namei.c:3555 [inline]
path_openat+0x7b7/0x3190 fs/namei.c:3786
do_filp_open+0x1c5/0x3d0 fs/namei.c:3816
do_open_execat+0x133/0x3d0 fs/exec.c:924
bprm_execve+0x567/0x16f0 fs/exec.c:1867
do_execveat_common+0x51b/0x6c0 fs/exec.c:1998
do_execveat fs/exec.c:2083 [inline]
__do_sys_execveat fs/exec.c:2157 [inline]
__se_sys_execveat fs/exec.c:2151 [inline]
__x64_sys_execveat+0xc4/0xe0 fs/exec.c:2151
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f49ce58eba9
RSP: 002b:00007f49cf4ad038 EFLAGS: 00000246 ORIG_RAX: 0000000000000142
RAX: ffffffffffffffda RBX: 00007f49ce7d6090 RCX: 00007f49ce58eba9
RDX: 0000000000000000 RSI: 0000200000000140 RDI: ffffffffffffff9c
RBP: 00007f49ce611e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f49ce7d6128 R14: 00007f49ce7d6090 R15: 00007ffd6fa51728
</TASK>
Showing all locks held in the system:
2 locks held by kworker/u4:1/12:
2 locks held by kworker/1:1/28:
#0: ffff888017872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2609 [inline]
#0: ffff888017872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x15b0 kernel/workqueue.c:2711
#1: ffffc90000a4fd00 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2609 [inline]
#1: ffffc90000a4fd00 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x15b0 kernel/workqueue.c:2711
1 lock held by khungtaskd/29:
#0: ffffffff8cd2fe20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:334 [inline]
#0: ffffffff8cd2fe20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:786 [inline]
#0: ffffffff8cd2fe20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x290 kernel/locking/lockdep.c:6633
1 lock held by kswapd0/86:
3 locks held by kworker/u4:6/1112:
2 locks held by kworker/u4:7/2928:
#0: ffff888017871538 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2609 [inline]
#0: ffff888017871538 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x15b0 kernel/workqueue.c:2711
#1: ffff8880b8e289c0 (psi_seq){-.-.}-{0:0}, at: psi_sched_switch kernel/sched/stats.h:189 [inline]
#1: ffff8880b8e289c0 (psi_seq){-.-.}-{0:0}, at: __schedule+0x20ee/0x44d0 kernel/sched/core.c:6694
1 lock held by udevd/5157:
2 locks held by getty/5545:
#0: ffff88814cd6a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000326e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x425/0x1380 drivers/tty/n_tty.c:2217
3 locks held by kworker/u5:4/5906:
#0: ffff88802fcb9538 ((wq_completion)hci8){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2609 [inline]
#0: ffff88802fcb9538 ((wq_completion)hci8){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x15b0 kernel/workqueue.c:2711
#1: ffffc90003387d00 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2609 [inline]
#1: ffffc90003387d00 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x15b0 kernel/workqueue.c:2711
#2: ffff88807719ce70 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x1d4/0x390 net/bluetooth/hci_sync.c:326
1 lock held by syz.3.20/5949:
2 locks held by syz.3.20/5950:
#0: ffff888023f8b488 (&sig->cred_guard_mutex){+.+.}-{3:3}, at: prepare_bprm_creds fs/exec.c:1499 [inline]
#0: ffff888023f8b488 (&sig->cred_guard_mutex){+.+.}-{3:3}, at: bprm_execve+0xca/0x16f0 fs/exec.c:1854
#1: ffff88805a154198 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:814 [inline]
#1: ffff88805a154198 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: open_last_lookups fs/namei.c:3555 [inline]
#1: ffff88805a154198 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: path_openat+0x7b7/0x3190 fs/namei.c:3786
1 lock held by syz.1.18/6010:
2 locks held by syz.1.18/6011:
#0: ffff888027ef5648 (&sig->cred_guard_mutex){+.+.}-{3:3}, at: prepare_bprm_creds fs/exec.c:1499 [inline]
#0: ffff888027ef5648 (&sig->cred_guard_mutex){+.+.}-{3:3}, at: bprm_execve+0xca/0x16f0 fs/exec.c:1854
#1: ffff88805a1546e0 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:814 [inline]
#1: ffff88805a1546e0 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: open_last_lookups fs/namei.c:3555 [inline]
#1: ffff88805a1546e0 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: path_openat+0x7b7/0x3190 fs/namei.c:3786
1 lock held by syz.2.19/6013:
2 locks held by syz.2.19/6014:
#0: ffff888027ef4f88 (&sig->cred_guard_mutex){+.+.}-{3:3}, at: prepare_bprm_creds fs/exec.c:1499 [inline]
#0: ffff888027ef4f88 (&sig->cred_guard_mutex){+.+.}-{3:3}, at: bprm_execve+0xca/0x16f0 fs/exec.c:1854
#1: ffff88804f618198 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:814 [inline]
#1: ffff88804f618198 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: open_last_lookups fs/namei.c:3555 [inline]
#1: ffff88804f618198 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: path_openat+0x7b7/0x3190 fs/namei.c:3786
2 locks held by syz.0.17/6016:
2 locks held by syz.0.17/6017:
#0: ffff8880270ac8c8 (&sig->cred_guard_mutex){+.+.}-{3:3}, at: prepare_bprm_creds fs/exec.c:1499 [inline]
#0: ffff8880270ac8c8 (&sig->cred_guard_mutex){+.+.}-{3:3}, at: bprm_execve+0xca/0x16f0 fs/exec.c:1854
#1: ffff88805a154c28 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:814 [inline]
#1: ffff88805a154c28 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: open_last_lookups fs/namei.c:3555 [inline]
#1: ffff88805a154c28 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: path_openat+0x7b7/0x3190 fs/namei.c:3786
1 lock held by syz.4.21/6047:
2 locks held by syz.4.21/6048:
#0: ffff888027ef1988 (&sig->cred_guard_mutex){+.+.}-{3:3}, at: prepare_bprm_creds fs/exec.c:1499 [inline]
#0: ffff888027ef1988 (&sig->cred_guard_mutex){+.+.}-{3:3}, at: bprm_execve+0xca/0x16f0 fs/exec.c:1854
#1: ffff88804f6186e0 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:814 [inline]
#1: ffff88804f6186e0 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: open_last_lookups fs/namei.c:3555 [inline]
#1: ffff88804f6186e0 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: path_openat+0x7b7/0x3190 fs/namei.c:3786
2 locks held by syz.5.22/6141:
2 locks held by syz.5.22/6142:
#0: ffff88802a875d08 (&sig->cred_guard_mutex){+.+.}-{3:3}, at: prepare_bprm_creds fs/exec.c:1499 [inline]
#0: ffff88802a875d08 (&sig->cred_guard_mutex){+.+.}-{3:3}, at: bprm_execve+0xca/0x16f0 fs/exec.c:1854
#1: ffff88805a155170 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:814 [inline]
#1: ffff88805a155170 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: open_last_lookups fs/namei.c:3555 [inline]
#1: ffff88805a155170 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: path_openat+0x7b7/0x3190 fs/namei.c:3786
9 locks held by syz.7.24/6144:
2 locks held by syz.7.24/6145:
#0: ffff88802ab18c08 (&sig->cred_guard_mutex){+.+.}-{3:3}, at: prepare_bprm_creds fs/exec.c:1499 [inline]
#0: ffff88802ab18c08 (&sig->cred_guard_mutex){+.+.}-{3:3}, at: bprm_execve+0xca/0x16f0 fs/exec.c:1854
#1: ffff88804f618c28 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:814 [inline]
#1: ffff88804f618c28 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: open_last_lookups fs/namei.c:3555 [inline]
#1: ffff88804f618c28 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: path_openat+0x7b7/0x3190 fs/namei.c:3786
2 locks held by syz.6.23/6149:
2 locks held by syz.6.23/6155:
#0: ffff88802ab18548 (&sig->cred_guard_mutex){+.+.}-{3:3}, at: prepare_bprm_creds fs/exec.c:1499 [inline]
#0: ffff88802ab18548 (&sig->cred_guard_mutex){+.+.}-{3:3}, at: bprm_execve+0xca/0x16f0 fs/exec.c:1854
#1: ffff88805a1556b8 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:814 [inline]
#1: ffff88805a1556b8 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: open_last_lookups fs/namei.c:3555 [inline]
#1: ffff88805a1556b8 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: path_openat+0x7b7/0x3190 fs/namei.c:3786
2 locks held by syz.8.25/6168:
2 locks held by syz.8.25/6169:
#0: ffff8880298592c8 (&sig->cred_guard_mutex){+.+.}-{3:3}, at: prepare_bprm_creds fs/exec.c:1499 [inline]
#0: ffff8880298592c8 (&sig->cred_guard_mutex){+.+.}-{3:3}, at: bprm_execve+0xca/0x16f0 fs/exec.c:1854
#1: ffff88805a155c00 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:814 [inline]
#1: ffff88805a155c00 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: open_last_lookups fs/namei.c:3555 [inline]
#1: ffff88805a155c00 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: path_openat+0x7b7/0x3190 fs/namei.c:3786
7 locks held by syz-executor/6181:
3 locks held by syz-executor/6186:
2 locks held by syz.9.26/6257:
2 locks held by syz.9.26/6259: