INFO: task syz.0.17:6703 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:29008 pid:6703 ppid:6570 flags:0x00004004
Call Trace:
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]
lookup_slow+0x46/0x70 fs/namei.c:1710
walk_component+0x2be/0x3f0 fs/namei.c:2002
lookup_last fs/namei.c:2459 [inline]
path_lookupat+0x169/0x440 fs/namei.c:2483
filename_lookup+0x1f4/0x510 fs/namei.c:2512
user_path_at_empty+0x42/0x60 fs/namei.c:2909
user_path_at include/linux/namei.h:57 [inline]
do_mount fs/namespace.c:3714 [inline]
__do_sys_mount fs/namespace.c:3926 [inline]
__se_sys_mount+0x29b/0x3c0 fs/namespace.c:3903
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: 0033:0x7f9ff578eba9
RSP: 002b:00007f9ff669d038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f9ff59d6090 RCX: 00007f9ff578eba9
RDX: 0000000000000000 RSI: 00002000000000c0 RDI: 0000000000000000
RBP: 00007f9ff5811e19 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000020040c1 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9ff59d6128 R14: 00007f9ff59d6090 R15: 00007ffd4c8640f8
INFO: task syz.1.18:6713 blocked for more than 145 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.18 state:D stack:29128 pid:6713 ppid:6572 flags:0x00004004
Call Trace:
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]
lookup_slow+0x46/0x70 fs/namei.c:1710
walk_component+0x2be/0x3f0 fs/namei.c:2002
lookup_last fs/namei.c:2459 [inline]
path_lookupat+0x169/0x440 fs/namei.c:2483
filename_lookup+0x1f4/0x510 fs/namei.c:2512
user_path_at_empty+0x42/0x60 fs/namei.c:2909
user_path_at include/linux/namei.h:57 [inline]
do_mount fs/namespace.c:3714 [inline]
__do_sys_mount fs/namespace.c:3926 [inline]
__se_sys_mount+0x29b/0x3c0 fs/namespace.c:3903
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: 0033:0x7f30ab98eba9
RSP: 002b:00007f30ac893038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f30abbd6090 RCX: 00007f30ab98eba9
RDX: 0000000000000000 RSI: 00002000000000c0 RDI: 0000000000000000
RBP: 00007f30aba11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000020040c1 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f30abbd6128 R14: 00007f30abbd6090 R15: 00007ffc619d2e88
INFO: task syz.2.19:6789 blocked for more than 148 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.19 state:D stack:29128 pid:6789 ppid:6575 flags:0x00004004
Call Trace:
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]
lookup_slow+0x46/0x70 fs/namei.c:1710
walk_component+0x2be/0x3f0 fs/namei.c:2002
lookup_last fs/namei.c:2459 [inline]
path_lookupat+0x169/0x440 fs/namei.c:2483
filename_lookup+0x1f4/0x510 fs/namei.c:2512
user_path_at_empty+0x42/0x60 fs/namei.c:2909
user_path_at include/linux/namei.h:57 [inline]
do_mount fs/namespace.c:3714 [inline]
__do_sys_mount fs/namespace.c:3926 [inline]
__se_sys_mount+0x29b/0x3c0 fs/namespace.c:3903
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: 0033:0x7f9b2398eba9
RSP: 002b:00007f9b24820038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f9b23bd6090 RCX: 00007f9b2398eba9
RDX: 0000000000000000 RSI: 00002000000000c0 RDI: 0000000000000000
RBP: 00007f9b23a11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000020040c1 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9b23bd6128 R14: 00007f9b23bd6090 R15: 00007ffd3e167be8
INFO: task syz.3.20:6793 blocked for more than 150 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.20 state:D stack:29128 pid:6793 ppid:6579 flags:0x00004004
Call Trace:
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]
lookup_slow+0x46/0x70 fs/namei.c:1710
walk_component+0x2be/0x3f0 fs/namei.c:2002
lookup_last fs/namei.c:2459 [inline]
path_lookupat+0x169/0x440 fs/namei.c:2483
filename_lookup+0x1f4/0x510 fs/namei.c:2512
user_path_at_empty+0x42/0x60 fs/namei.c:2909
user_path_at include/linux/namei.h:57 [inline]
do_mount fs/namespace.c:3714 [inline]
__do_sys_mount fs/namespace.c:3926 [inline]
__se_sys_mount+0x29b/0x3c0 fs/namespace.c:3903
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: 0033:0x7f6d2458eba9
RSP: 002b:00007f6d23bdd038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f6d247d6090 RCX: 00007f6d2458eba9
RDX: 0000000000000000 RSI: 00002000000000c0 RDI: 0000000000000000
RBP: 00007f6d24611e19 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000020040c1 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6d247d6128 R14: 00007f6d247d6090 R15: 00007ffe32826b48
Showing all locks held in the system:
4 locks held by kworker/u4:0/11:
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 kswapd0/85:
2 locks held by kworker/u4:6/1094:
#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/5159:
2 locks held by getty/5549:
#0: ffff88802d1cb0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243