INFO: task syz-executor.5:30969 blocked for more than 143 seconds.
Not tainted 6.3.0-rc6-syzkaller-00168-g95abc817ab3a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:28840 pid:30969 ppid:23146 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5307 [inline]
__schedule+0xc91/0x5770 kernel/sched/core.c:6625
schedule+0xde/0x1a0 kernel/sched/core.c:6701
d_wait_lookup fs/dcache.c:2625 [inline]
d_alloc_parallel+0xdbe/0x1530 fs/dcache.c:2707
__lookup_slow+0x193/0x460 fs/namei.c:1671
lookup_slow fs/namei.c:1703 [inline]
walk_component+0x33f/0x5a0 fs/namei.c:1994
lookup_last fs/namei.c:2451 [inline]
path_lookupat+0x1ba/0x840 fs/namei.c:2475
filename_lookup+0x1d2/0x590 fs/namei.c:2504
user_path_at_empty+0x46/0x60 fs/namei.c:2877
user_path_at include/linux/namei.h:57 [inline]
do_mount fs/namespace.c:3382 [inline]
__do_sys_mount fs/namespace.c:3594 [inline]
__se_sys_mount fs/namespace.c:3571 [inline]
__x64_sys_mount+0x1ee/0x300 fs/namespace.c:3571
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fdb00a8c169
RSP: 002b:00007fdb0185a168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fdb00bac050 RCX: 00007fdb00a8c169
RDX: 00000000200000c0 RSI: 0000000020000200 RDI: 0000000000000000
RBP: 00007fdb00ae7ca1 R08: 0000000020000480 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc9701f0df R14: 00007fdb0185a300 R15: 0000000000022000
INFO: task syz-executor.5:30975 blocked for more than 145 seconds.
Not tainted 6.3.0-rc6-syzkaller-00168-g95abc817ab3a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:29496 pid:30975 ppid:23146 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5307 [inline]
__schedule+0xc91/0x5770 kernel/sched/core.c:6625
schedule+0xde/0x1a0 kernel/sched/core.c:6701
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6760
rwsem_down_write_slowpath+0x3e2/0x1220 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write_nested+0x1d6/0x200 kernel/locking/rwsem.c:1690
inode_lock_nested include/linux/fs.h:793 [inline]
filename_create+0x1aa/0x4a0 fs/namei.c:3808
do_mkdirat+0x9d/0x310 fs/namei.c:4053
__do_sys_mkdir fs/namei.c:4081 [inline]
__se_sys_mkdir fs/namei.c:4079 [inline]
__x64_sys_mkdir+0xf6/0x140 fs/namei.c:4079
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fdb00a8c169
RSP: 002b:00007fdb01839168 EFLAGS: 00000246
ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007fdb00bac120 RCX: 00007fdb00a8c169
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000240
RBP: 00007fdb00ae7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc9701f0df R14: 00007fdb01839300 R15: 0000000000022000
INFO: task syz-executor.5:30979 blocked for more than 145 seconds.
Not tainted 6.3.0-rc6-syzkaller-00168-g95abc817ab3a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D
stack:29528 pid:30979 ppid:23146 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5307 [inline]
__schedule+0xc91/0x5770 kernel/sched/core.c:6625
schedule+0xde/0x1a0 kernel/sched/core.c:6701
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6760
rwsem_down_read_slowpath kernel/locking/rwsem.c:1086 [inline]
__down_read_common+0x7df/0xf30 kernel/locking/rwsem.c:1250
inode_lock_shared include/linux/fs.h:768 [inline]
lookup_slow fs/namei.c:1702 [inline]
walk_component+0x332/0x5a0 fs/namei.c:1994
lookup_last fs/namei.c:2451 [inline]
path_lookupat+0x1ba/0x840 fs/namei.c:2475
filename_lookup+0x1d2/0x590 fs/namei.c:2504
user_path_at_empty+0x46/0x60 fs/namei.c:2877
user_path_at include/linux/namei.h:57 [inline]
do_mount fs/namespace.c:3382 [inline]
__do_sys_mount fs/namespace.c:3594 [inline]
__se_sys_mount fs/namespace.c:3571 [inline]
__x64_sys_mount+0x1ee/0x300 fs/namespace.c:3571
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fdb00a8c169
RSP: 002b:00007fdb01818168 EFLAGS: 00000246
ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fdb00bac1f0 RCX: 00007fdb00a8c169
RDX: 0000000020000080 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 00007fdb00ae7ca1 R08: 0000000020000280 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc9701f0df R14: 00007fdb01818300 R15: 0000000000022000
INFO: task syz-executor.5:30984 blocked for more than 146 seconds.
Not tainted 6.3.0-rc6-syzkaller-00168-g95abc817ab3a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:29528 pid:30984 ppid:23146 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5307 [inline]
__schedule+0xc91/0x5770 kernel/sched/core.c:6625
schedule+0xde/0x1a0 kernel/sched/core.c:6701
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6760
rwsem_down_read_slowpath kernel/locking/rwsem.c:1086 [inline]
__down_read_common+0x7df/0xf30 kernel/locking/rwsem.c:1250
inode_lock_shared include/linux/fs.h:768 [inline]
lookup_slow fs/namei.c:1702 [inline]
walk_component+0x332/0x5a0 fs/namei.c:1994
lookup_last fs/namei.c:2451 [inline]
path_lookupat+0x1ba/0x840 fs/namei.c:2475
filename_lookup+0x1d2/0x590 fs/namei.c:2504
user_path_at_empty+0x46/0x60 fs/namei.c:2877
user_path_at include/linux/namei.h:57 [inline]
__do_sys_chdir fs/open.c:551 [inline]
__se_sys_chdir fs/open.c:545 [inline]
__x64_sys_chdir+0xbb/0x260 fs/open.c:545
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fdb00a8c169
RSP: 002b:00007fdb017f7168 EFLAGS: 00000246
ORIG_RAX: 0000000000000050
RAX: ffffffffffffffda RBX: 00007fdb00bac2c0 RCX: 00007fdb00a8c169
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200001c0
RBP: 00007fdb00ae7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc9701f0df R14: 00007fdb017f7300 R15: 0000000000022000
INFO: task syz-executor.5:30988 blocked for more than 147 seconds.
Not tainted 6.3.0-rc6-syzkaller-00168-g95abc817ab3a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:29528 pid:30988 ppid:23146 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5307 [inline]
__schedule+0xc91/0x5770 kernel/sched/core.c:6625
schedule+0xde/0x1a0 kernel/sched/core.c:6701
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6760
rwsem_down_read_slowpath kernel/locking/rwsem.c:1086 [inline]
__down_read_common+0x7df/0xf30 kernel/locking/rwsem.c:1250
inode_lock_shared include/linux/fs.h:768 [inline]
lookup_slow fs/namei.c:1702 [inline]
walk_component+0x332/0x5a0 fs/namei.c:1994
lookup_last fs/namei.c:2451 [inline]
path_lookupat+0x1ba/0x840 fs/namei.c:2475
filename_lookup+0x1d2/0x590 fs/namei.c:2504
user_path_at_empty+0x46/0x60 fs/namei.c:2877
user_path_at include/linux/namei.h:57 [inline]
path_setxattr+0x92/0x1c0 fs/xattr.c:646
__do_sys_lsetxattr fs/xattr.c:674 [inline]
__se_sys_lsetxattr fs/xattr.c:670 [inline]
__x64_sys_lsetxattr+0xc1/0x160 fs/xattr.c:670
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fdb00a8c169
RSP: 002b:00007fdb017d6168 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd
RAX: ffffffffffffffda RBX: 00007fdb00bac390 RCX: 00007fdb00a8c169
RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000020000140
RBP: 00007fdb00ae7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc9701f0df R14: 00007fdb017d6300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8c794a70 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:510
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8c794770 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:510
1 lock held by khungtaskd/28:
#0:
ffffffff8c7955c0
(
rcu_read_lock
){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6495
2 locks held by getty/4751:
#0:
ffff88802c21c098 (
&tty->ldisc_sem
){++++}-{0:0}
, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc900015902f0
(&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177
1 lock held by syz-executor.3/5106:
#0: ffffffff8c7a08b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline]
#0: ffffffff8c7a08b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x64a/0x770 kernel/rcu/tree_exp.h:989
5 locks held by kworker/u4:15/5474:
2 locks held by kworker/u4:19/28473:
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x87a/0x15c0 kernel/workqueue.c:2361
#1: ffffc90003c4fda8 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x15c0 kernel/workqueue.c:2365
3 locks held by kworker/u4:12/9697:
2 locks held by kworker/1:16/25270:
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x87a/0x15c0 kernel/workqueue.c:2361
#1: ffffc90015317da8 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x15c0 kernel/workqueue.c:2365
2 locks held by syz-executor.5/30950:
1 lock held by syz-executor.5/30969:
#0: ffff88808cfac168 (&type->i_mutex_dir_key#24){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:768 [inline]
#0: ffff88808cfac168 (&type->i_mutex_dir_key#24){.+.+}-{3:3}, at: lookup_slow fs/namei.c:1702 [inline]
#0: ffff88808cfac168 (&type->i_mutex_dir_key#24){.+.+}-{3:3}, at: walk_component+0x332/0x5a0 fs/namei.c:1994
2 locks held by syz-executor.5/30975:
#0: ffff888024f7e460 (sb_writers#38){.+.+}-{0:0}, at: filename_create+0xf1/0x4a0 fs/namei.c:3801
#1: ffff88808cfac168 (&type->i_mutex_dir_key#24/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:793 [inline]
#1: ffff88808cfac168 (&type->i_mutex_dir_key#24/1){+.+.}-{3:3}, at: filename_create+0x1aa/0x4a0 fs/namei.c:3808
1 lock held by syz-executor.5/30979:
#0: ffff88808cfac168 (&type->i_mutex_dir_key#24){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:768 [inline]
#0: ffff88808cfac168 (&type->i_mutex_dir_key#24){.+.+}-{3:3}, at: lookup_slow fs/namei.c:1702 [inline]
#0: ffff88808cfac168 (&type->i_mutex_dir_key#24){.+.+}-{3:3}, at: walk_component+0x332/0x5a0 fs/namei.c:1994
1 lock held by syz-executor.5/30984:
#0: ffff88808cfac168 (&type->i_mutex_dir_key#24){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:768 [inline]
#0: ffff88808cfac168 (&type->i_mutex_dir_key#24){.+.+}-{3:3}, at: lookup_slow fs/namei.c:1702 [inline]
#0: ffff88808cfac168 (&type->i_mutex_dir_key#24){.+.+}-{3:3}, at: walk_component+0x332/0x5a0 fs/namei.c:1994
1 lock held by syz-executor.5/30988:
#0: ffff88808cfac168 (&type->i_mutex_dir_key#24){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:768 [inline]
#0: ffff88808cfac168 (&type->i_mutex_dir_key#24){.+.+}-{3:3}, at: lookup_slow fs/namei.c:1702 [inline]
#0: ffff88808cfac168 (&type->i_mutex_dir_key#24){.+.+}-{3:3}, at: walk_component+0x332/0x5a0 fs/namei.c:1994
3 locks held by syz-executor.5/3231:
#0: ffffffff8e187650 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1075
#1: ffffffff8e187708 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
#1: ffffffff8e187708 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x51a/0x7e0 net/netlink/genetlink.c:1063
#2: ffffffff8c7a08b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
#2: ffffffff8c7a08b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3e8/0x770 kernel/rcu/tree_exp.h:989
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.3.0-rc6-syzkaller-00168-g95abc817ab3a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
nmi_cpu_backtrace+0x29c/0x350 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x2a4/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xe16/0x1090 kernel/hung_task.c:379
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4423 Comm: klogd Not tainted 6.3.0-rc6-syzkaller-00168-g95abc817ab3a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
RIP: 0010:mark_held_locks+0x0/0xe0 kernel/locking/lockdep.c:4225
Code: 24 08 e9 99 f8 ff ff 4c 89 fe 48 c7 c7 40 fb 68 8c 44 89 54 24 08 e8 af de da 02 44 8b 54 24 08 e9 58 f8 ff ff 0f 1f 44 00 00 <48> b8 00 00 00 00 00 fc ff df 41 56 41 55 41 54 49 89 fc 48 81 c7
RSP: 0018:ffffc9000312ff10 EFLAGS: 00000002
RAX: 0000000000000001 RBX: ffff88807e243a80 RCX: 1ffffffff1cee551
RDX: 1ffff1100fc48893 RSI: 0000000000000006 RDI: ffff88807e243a80
RBP: ffff88807e243a80 R08: 0000000000000000 R09: 0000000000000001
R10: fffffbfff1ceeb5a R11: 0000000000000000 R12: ffffc9000312ff58
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS: 00007f4cbc6eb800(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555565e1708 CR3: 0000000028b68000 CR4: 0000000000350ee0
Call Trace:
__trace_hardirqs_on_caller kernel/locking/lockdep.c:4263 [inline]
lockdep_hardirqs_on_prepare kernel/locking/lockdep.c:4322 [inline]
lockdep_hardirqs_on_prepare+0x28f/0x410 kernel/locking/lockdep.c:4274
__exit_to_user_mode kernel/entry/common.c:131 [inline]
syscall_exit_to_user_mode+0x27/0x50 kernel/entry/common.c:299
do_syscall_64+0x46/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f4cbc8870ac
Code: 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 19 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 64 c3 0f 1f 00 55 48 83 ec 20 48 89 54 24 10
RSP: 002b:00007fff16c558a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: 0000000000000054 RBX: 0000000000000000 RCX: 00007f4cbc8870ac
RDX: 0000000000000054 RSI: 000055c64376f470 RDI: 0000000000000003
RBP: 000055c643766910 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000014
R13: 0000000000000001 R14: 00007f4cbca0277d R15: 00007fff16c559b8