INFO: task syz-executor.5:4311 blocked for more than 143 seconds.
Not tainted 6.3.0-rc7-syzkaller-00089-gcb0856346a60 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:24808 pid:4311 ppid:5106 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5307 [inline]
__schedule+0x173b/0x4630 kernel/sched/core.c:6625
schedule+0xc3/0x180 kernel/sched/core.c:6701
coredump_task_exit+0x2c5/0x3a0 kernel/exit.c:432
do_exit+0x29a/0x2290 kernel/exit.c:819
do_group_exit+0x206/0x2c0 kernel/exit.c:1019
get_signal+0x1701/0x17e0 kernel/signal.c:2859
arch_do_signal_or_restart+0x91/0x670 arch/x86/kernel/signal.c:306
exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:168
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f926888c169
RSP: 002b:00007ffd56f46af8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffdfc RBX: 00007f92689abf8c RCX: 00007f926888c169
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f92689abf8c
RBP: 00007f92689abf80 R08: 0000000000000010 R09: 0000000000000000
R10: 00007ffd56f46be0 R11: 0000000000000246 R12: 000000000029a87d
R13: 00007ffd56f46be0 R14: 00007ffd56f46c00 R15: 0000000000000032
INFO: task syz-executor.5:4312 blocked for more than 144 seconds.
Not tainted 6.3.0-rc7-syzkaller-00089-gcb0856346a60 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:24552 pid:4312 ppid:5106 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5307 [inline]
__schedule+0x173b/0x4630 kernel/sched/core.c:6625
schedule+0xc3/0x180 kernel/sched/core.c:6701
xlog_grant_head_wait+0x387/0x910 fs/xfs/xfs_log.c:307
xlog_grant_head_check+0x299/0x480
xfs_log_reserve+0x3c4/0xb10 fs/xfs/xfs_log.c:486
xfs_trans_reserve+0x239/0x6a0 fs/xfs/xfs_trans.c:194
xfs_trans_alloc+0x423/0x810 fs/xfs/xfs_trans.c:283
xfs_trans_alloc_icreate+0xc9/0x2b0 fs/xfs/xfs_trans.c:1246
xfs_create+0x6c9/0x1240 fs/xfs/xfs_inode.c:1002
xfs_generic_create+0x491/0xd70 fs/xfs/xfs_iops.c:199
lookup_open fs/namei.c:3416 [inline]
open_last_lookups fs/namei.c:3484 [inline]
path_openat+0x13df/0x3170 fs/namei.c:3712
do_filp_open+0x234/0x490 fs/namei.c:3742
file_open_name fs/open.c:1293 [inline]
filp_open+0x261/0x2c0 fs/open.c:1313
do_coredump+0x215a/0x2980 fs/coredump.c:703
get_signal+0x145e/0x17e0 kernel/signal.c:2845
arch_do_signal_or_restart+0x91/0x670 arch/x86/kernel/signal.c:306
exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:168
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f926888c169
RSP: 002b:00007f92673fe168 EFLAGS: 00000246 ORIG_RAX: 000000000000004d
RAX: ffffffffffffffe5 RBX: 00007f92689abf80 RCX: 00007f926888c169
RDX: 0000000000000000 RSI: 00000c0000000000 RDI: 0000000000000004
RBP: 00007f92688e7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd56f46a7f R14: 00007f92673fe300 R15: 0000000000022000
INFO: task syz-executor.5:4313 blocked for more than 146 seconds.
Not tainted 6.3.0-rc7-syzkaller-00089-gcb0856346a60 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:28568 pid:4313 ppid:5106 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5307 [inline]
__schedule+0x173b/0x4630 kernel/sched/core.c:6625
schedule+0xc3/0x180 kernel/sched/core.c:6701
coredump_task_exit+0x2c5/0x3a0 kernel/exit.c:432
do_exit+0x29a/0x2290 kernel/exit.c:819
do_group_exit+0x206/0x2c0 kernel/exit.c:1019
get_signal+0x1701/0x17e0 kernel/signal.c:2859
arch_do_signal_or_restart+0x91/0x670 arch/x86/kernel/signal.c:306
exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:168
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f926888c169
RSP: 002b:00007f92673dd218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f92689ac058 RCX: 00007f926888c169
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f92689ac058
RBP: 00007f92689ac050 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f92689ac05c
R13: 00007ffd56f46a7f R14: 00007f92673dd300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8cf25570 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:510
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8cf25d70 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:510
1 lock held by khungtaskd/28:
#0: ffffffff8cf253a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4744:
#0: ffff888028159098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2177
2 locks held by syz-executor.3/5099:
#0: ffff88801fd8c0e0 (&type->s_umount_key#70){++++}-{3:3}, at: deactivate_super+0xad/0xf0 fs/super.c:361
#1: ffffffff8cf2a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline]
#1: ffffffff8cf2a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3a3/0x890 kernel/rcu/tree_exp.h:989
1 lock held by syz-executor.2/5110:
#0: ffff8880780aa0e0 (&type->s_umount_key#70){++++}-{3:3}, at: deactivate_super+0xad/0xf0 fs/super.c:361
2 locks held by kworker/0:15/5871:
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2363
#1: ffffc900153d7d20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2365
2 locks held by kworker/0:16/5873:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2363
#1: ffffc90014d67d20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2365
3 locks held by syz-executor.5/4312:
#0: ffff888084012460 (sb_writers#18){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:394
#1: ffff88802d9948f8 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
#1: ffff88802d9948f8 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{3:3}, at: open_last_lookups fs/namei.c:3481 [inline]
#1: ffff88802d9948f8 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{3:3}, at: path_openat+0x7ba/0x3170 fs/namei.c:3712
#2: ffff888084012650 (sb_internal#3){.+.+}-{0:0}, at: xfs_trans_alloc_icreate+0xc9/0x2b0 fs/xfs/xfs_trans.c:1246
3 locks held by kworker/u4:0/4848:
2 locks held by syz-executor.1/5243:
#0: ffff88803b8b60e0 (&type->s_umount_key#68/1){+.+.}-{3:3}, at: alloc_super+0x217/0x930 fs/super.c:228
#1: ffffffff8cf2a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
#1: ffffffff8cf2a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x46c/0x890 kernel/rcu/tree_exp.h:989
2 locks held by syz-executor.5/5306:
3 locks held by syz-executor.0/5308:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.3.0-rc7-syzkaller-00089-gcb0856346a60 #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+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x187/0x300 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+0xec2/0xf00 kernel/hung_task.c:379
kthread+0x270/0x300 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: 28164 Comm: syz-executor.4 Not tainted 6.3.0-rc7-syzkaller-00089-gcb0856346a60 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
RIP: 0010:__lock_acquire+0xeac/0x1f80
Code: d4 49 89 fe 48 c7 c7 80 35 df 8c 48 89 de e8 fb 2b ff 02 4c 89 f7 eb 8f 89 e8 25 ff 1f 00 00 c1 ed 03 81 e5 00 60 00 00 09 c5 <4c> 89 f8 48 c1 e8 20 29 c5 89 c1 c1 c1 04 31 e9 44 01 f8 41 29 cf
RSP: 0018:ffffc9000bc277a0 EFLAGS: 00000002
RAX: 0000000000000b61 RBX: 0000000000000000 RCX: ffffffff91ad4003
RDX: 0000000000000000 RSI: 0000000000000008 RDI: dffffc0000000000
RBP: 0000000000000b61 R08: dffffc0000000000 R09: fffffbfff205b866
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88802107a770
R13: 0000000000000001 R14: ffff88802107a798 R15: ffffffffffffffff
FS: 00007faded138700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f43fcd86058 CR3: 000000008252f000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x1e1/0x520 kernel/locking/lockdep.c:5669
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
__wake_up_common_lock kernel/sched/wait.c:137 [inline]
__wake_up+0x101/0x1d0 kernel/sched/wait.c:160
io_cqring_do_overflow_flush+0x5c/0xe0 io_uring/io_uring.c:705
io_cqring_wait+0xe54/0x16e0 io_uring/io_uring.c:2629
__do_sys_io_uring_enter io_uring/io_uring.c:3503 [inline]
__se_sys_io_uring_enter+0x60f/0x12f0 io_uring/io_uring.c:3392
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fadec48c169
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007faded138168 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: ffffffffffffffda RBX: 00007fadec5abf80 RCX: 00007fadec48c169
RDX: 000000000000d90b RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007fadec4e7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffec28299ff R14: 00007faded138300 R15: 0000000000022000