INFO: task syz.1.127:5942 blocked for more than 143 seconds.
Not tainted 6.10.0-rc6-next-20240703-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.127 state:D stack:24672 pid:5942 tgid:5942 ppid:5395 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5248 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6600
__schedule_loop kernel/sched/core.c:6677 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6692
io_schedule+0x8d/0x110 kernel/sched/core.c:7477
folio_wait_bit_common+0x882/0x12b0 mm/filemap.c:1307
folio_lock include/linux/pagemap.h:1050 [inline]
remove_inode_single_folio fs/hugetlbfs/inode.c:603 [inline]
remove_inode_hugepages+0x508/0x1520 fs/hugetlbfs/inode.c:669
hugetlbfs_evict_inode+0x23/0x70 fs/hugetlbfs/inode.c:689
evict+0x2a8/0x630 fs/inode.c:669
__dentry_kill+0x20d/0x630 fs/dcache.c:603
dput+0x19f/0x2b0 fs/dcache.c:845
__fput+0x5f8/0x8a0 fs/file_table.c:430
task_work_run+0x24f/0x310 kernel/task_work.c:204
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x168/0x370 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbd02975bd9
RSP: 002b:00007ffc20bcf738 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 000000000001b2df RCX: 00007fbd02975bd9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: ffffffffffffffff R08: 0000000000000001 R09: 0000000420bcfa6f
R10: 00007fbd02800000 R11: 0000000000000246 R12: 00007fbd02b03f6c
R13: 0000000000000032 R14: 00007fbd02b05a60 R15: 00007fbd02b03f60
Showing all locks held in the system:
1 lock held by pool_workqueue_/3:
#0: ffffffff8e33ac38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline]
#0: ffffffff8e33ac38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:980
1 lock held by khungtaskd/30:
#0: ffffffff8e335860 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:333 [inline]
#0: ffffffff8e335860 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:845 [inline]
#0: ffffffff8e335860 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6704
3 locks held by kworker/1:2/58:
#0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3199 [inline]
#0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3305
#1: ffffc9000133fd00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3200 [inline]
#1: ffffc9000133fd00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3305
#2: ffff888023208240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x2d1/0x4130 drivers/net/netdevsim/fib.c:1489
3 locks held by kworker/u8:5/1033:
#0: ffff88802a544948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3199 [inline]
#0: ffff88802a544948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3305
#1: ffffc90003fffd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3200 [inline]
#1: ffffc90003fffd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3305
#2: ffffffff8f5ff788 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4193
5 locks held by kworker/u8:7/2448:
2 locks held by getty/4852:
#0: ffff88802f6920a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000312b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2211
3 locks held by kworker/0:5/5156:
3 locks held by kworker/1:6/5158:
#0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3199 [inline]
#0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3305
#1: ffffc900044bfd00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3200 [inline]
#1: ffffc900044bfd00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3305
#2: ffff888022bfe240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x2d1/0x4130 drivers/net/netdevsim/fib.c:1489
1 lock held by syz.1.127/5942:
#0: ffff88801ba82068 (&hugetlb_fault_mutex_table[i]){+.+.}-{3:3}, at: remove_inode_hugepages+0x38e/0x1520 fs/hugetlbfs/inode.c:664
3 locks held by syz-executor/7871:
#0: ffffffff8f5ff788 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:149 [inline]
#0: ffffffff8f5ff788 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x847/0x1180 net/core/rtnetlink.c:6725
#1: ffff8880621b9428 (&wg->device_update_lock){+.+.}-{3:3}, at: wg_open+0x22d/0x420 drivers/net/wireguard/device.c:50
#2: ffffffff8e33ac38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline]
#2: ffffffff8e33ac38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:980
1 lock held by syz-executor/7892:
#0: ffffffff8f5ff788 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:149 [inline]
#0: ffffffff8f5ff788 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x847/0x1180 net/core/rtnetlink.c:6725
1 lock held by syz-executor/7978:
#0: ffffffff8f5ff788 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:149 [inline]
#0: ffffffff8f5ff788 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x847/0x1180 net/core/rtnetlink.c:6725
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.10.0-rc6-next-20240703-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xfee/0x1030 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
NMI backtrace for cpu 0 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:106 [inline]
NMI backtrace for cpu 0 skipped: idling at acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:112