INFO: task syz-executor.1:12527 blocked for more than 143 seconds.
Not tainted 6.7.0-rc5-syzkaller-00047-g5bd7ef53ffe5 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:24688 pid:12527 tgid:12473 ppid:5093 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0x1961/0x4ab0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
rwsem_down_read_slowpath kernel/locking/rwsem.c:1086 [inline]
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read_nested+0x707/0xa40 kernel/locking/rwsem.c:1652
xfs_ilock+0x10e/0x3b0 fs/xfs/xfs_inode.c:198
xfs_ilock_iocb fs/xfs/xfs_file.c:211 [inline]
xfs_file_dio_read+0x20c/0x410 fs/xfs/xfs_file.c:269
xfs_file_read_iter+0x29a/0x4d0 fs/xfs/xfs_file.c:337
call_read_iter include/linux/fs.h:2014 [inline]
copy_splice_read+0x4c9/0x9c0 fs/splice.c:364
splice_direct_to_actor+0x2c4/0x9e0 fs/splice.c:1069
do_splice_direct+0x2ac/0x3f0 fs/splice.c:1194
do_sendfile+0x62c/0x1000 fs/read_write.c:1254
__do_sys_sendfile64 fs/read_write.c:1322 [inline]
__se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1308
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f88d847cba9
RSP: 002b:00007f88d913a0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f88d859c050 RCX: 00007f88d847cba9
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004
RBP: 00007f88d84c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000008800000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f88d859c050 R15: 00007ffc469fdef8
Showing all locks held in the system:
1 lock held by pool_workqueue_/3:
2 locks held by kworker/u4:0/11:
2 locks held by kworker/1:0/23:
#0: ffff888012c72938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2602 [inline]
#0: ffff888012c72938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2700
#1: ffffc900001d7d20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2602 [inline]
#1: ffffc900001d7d20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2700
1 lock held by khungtaskd/29:
#0: ffffffff8d92e060 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:301 [inline]
#0: ffffffff8d92e060 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:747 [inline]
#0: ffffffff8d92e060 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by getty/4814:
#0: ffff88802a7f80a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b4/0x1e10 drivers/tty/n_tty.c:2201
1 lock held by syz-executor.4/5107:
#0: ffffffff8d933a38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
#0: ffffffff8d933a38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x46c/0x890 kernel/rcu/tree_exp.h:996
9 locks held by syz-executor.1/12474:
2 locks held by syz-executor.1/12527:
#0: ffff888029126418 (sb_writers#17){.+.+}-{0:0}, at: do_sendfile+0x607/0x1000 fs/read_write.c:1253
#1: ffff8880796fa9f8 (&sb->s_type->i_mutex_key#24){++++}-{3:3}, at: xfs_ilock+0x10e/0x3b0 fs/xfs/xfs_inode.c:198
4 locks held by syz-executor.3/12824:
3 locks held by syz-executor.3/13348:
1 lock held by syz-executor.0/13350:
#0: ffff8880823f00e0 (&type->s_umount_key#58){++++}-{3:3}, at: xfs_open_devices+0x623/0x680 fs/xfs/xfs_super.c:498
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.7.0-rc5-syzkaller-00047-g5bd7ef53ffe5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
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+0x198/0x310 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xfaf/0xff0 kernel/hung_task.c:379
kthread+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 13375 Comm: syz-executor.1 Not tainted 6.7.0-rc5-syzkaller-00047-g5bd7ef53ffe5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
RIP: 0033:0x7f25436287cb
Code: cd 48 01 c1 49 39 4f 08 72 4c 8d 4d ff 85 ed 74 33 66 0f 1f 44 00 00 48 39 f0 72 1b 4d 8b 07 49 89 c1 49 29 f1 47 0f b6 0c 08 <45> 84 c9 74 08 45 88 0c 00 49 8b 47 10 48 83 c0 01 49 89 47 10 83
RSP: 002b:00007f254448b520 EFLAGS: 00000206
RAX: 00000000009b35f1 RBX: 00007f254448b5c0 RCX: 00000000000000d0
RDX: 0000000000000005 RSI: 0000000000000001 RDI: 00007f254448b660
RBP: 0000000000000102 R08: 00007f2539dff000 R09: 0000000000000000
R10: 0000000000000000 R11: 00007f254448b5d0 R12: 0000000000000001
R13: 00007f25436ea620 R14: 0000000000000000 R15: 00007f254448b660
FS: 00007f254448c6c0 GS: 0000000000000000