INFO: task syz-executor.1:16589 blocked for more than 143 seconds.
Not tainted 6.7.0-rc5-syzkaller-00014-g26aff849438c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:21360 pid:16589 tgid:16588 ppid:5111 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: 0033:0x7fca98c7cba9
RSP: 002b:00007fca99a480c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fca98d9bf80 RCX: 00007fca98c7cba9
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004
RBP: 00007fca98cc847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000008800000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fca98d9bf80 R15: 00007ffc313fd0f8
Showing all locks held in the system:
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/4810:
#0: ffff88802a1f90a0 (&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.2/5091:
#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
2 locks held by kworker/0:4/5156:
#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: ffffc90004befd20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2602 [inline]
#1: ffffc90004befd20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2700
2 locks held by kworker/u4:10/12682:
2 locks held by syz-executor.1/16589:
#0: ffff888017748418 (sb_writers#23){.+.+}-{0:0}, at: do_sendfile+0x607/0x1000 fs/read_write.c:1253
#1: ffff888038cf92b8 (&sb->s_type->i_mutex_key#28){++++}-{3:3}, at: xfs_ilock+0x10e/0x3b0 fs/xfs/xfs_inode.c:198
7 locks held by syz-executor.1/16644:
2 locks held by syz-executor.5/16686:
#0: ffff888078110418 (sb_writers#23){.+.+}-{0:0}, at: do_sendfile+0x607/0x1000 fs/read_write.c:1253
#1: ffff888038cf9a78 (&sb->s_type->i_mutex_key#28){++++}-{3:3}, at: xfs_ilock+0x10e/0x3b0 fs/xfs/xfs_inode.c:198
3 locks held by syz-executor.5/16703:
3 locks held by syz-executor.5/17617:
1 lock held by syz-executor.1/17629:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.7.0-rc5-syzkaller-00014-g26aff849438c #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: 17629 Comm: syz-executor.1 Not tainted 6.7.0-rc5-syzkaller-00014-g26aff849438c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
RIP: 0010:arch_atomic_read arch/x86/include/asm/atomic.h:23 [inline]
RIP: 0010:raw_atomic_read include/linux/atomic/atomic-arch-fallback.h:457 [inline]
RIP: 0010:rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:122 [inline]
RIP: 0010:rcu_is_watching+0x4e/0xb0 kernel/rcu/tree.c:700
Code: ff df 4c 8d 34 dd 40 a9 34 8d 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 3c e2 73 00 48 c7 c3 08 6c 03 00 49 03 1e <48> 89 d8 48 c1 e8 03 42 0f b6 04 38 84 c0 75 1e 8b 03 65 ff 0d 51
RSP: 0000:ffffc90013c47ea0 EFLAGS: 00000082
RAX: 1ffffffff1a69528 RBX: ffff8880b9836c08 RCX: ffffffff8195598c
RDX: 0000000000000000 RSI: ffffffff8bbdf180 RDI: ffffffff8bbdf140
RBP: 0000000000000000 R08: ffffffff8f00d26f R09: 1ffffffff1e01a4d
R10: dffffc0000000000 R11: fffffbfff1e01a4e R12: ffff88801e239dc0
R13: 0000000000000004 R14: ffffffff8d34a940 R15: dffffc0000000000
FS: 00007f32b3bd26c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f32a9aee000 CR3: 00000000367c5000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
trace_irq_disable+0x3b/0xf0 include/trace/events/preemptirq.h:36
__enter_from_user_mode kernel/entry/common.c:29 [inline]
irqentry_enter_from_user_mode+0x76/0xd0 kernel/entry/common.c:303
irqentry_enter+0x13/0x60 kernel/entry/common.c:321
exc_page_fault+0x51/0x870 arch/x86/mm/fault.c:1558
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x7f32b2e287c6
Code: f0 72 6e 48 63 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
RSP: 002b:00007f32b3bd1520 EFLAGS: 00010206
RAX: 00000000004ef001 RBX: 00007f32b3bd15c0 RCX: 0000000000000100
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00007f32b3bd1660
RBP: 0000000000000102 R08: 00007f32a95ff000 R09: 00000000004ef000
R10: 0000000000000000 R11: 00007f32b3bd15d0 R12: 0000000000000001
R13: 00007f32b2eea620 R14: 0000000000000000 R15: 00007f32b3bd1660