INFO: task syz.4.88:6857 blocked for more than 143 seconds.
Not tainted 6.10.0-rc6-syzkaller-g8a03d70c27fc #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.88 state:D stack:0 pid:6857 tgid:6856 ppid:6288 flags:0x00000009
Call trace:
__switch_to+0x314/0x560 arch/arm64/kernel/process.c:553
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x14ac/0x24d8 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0xbc/0x238 kernel/sched/core.c:6837
bit_wait+0x1c/0xac kernel/sched/wait_bit.c:199
__wait_on_bit kernel/sched/wait_bit.c:49 [inline]
out_of_line_wait_on_bit+0x208/0x334 kernel/sched/wait_bit.c:64
wait_on_bit include/linux/wait_bit.h:76 [inline]
fscache_wait_on_volume_collision fs/netfs/fscache_volume.c:150 [inline]
fscache_hash_volume fs/netfs/fscache_volume.c:187 [inline]
__fscache_acquire_volume+0xb38/0xd6c fs/netfs/fscache_volume.c:331
fscache_acquire_volume include/linux/fscache.h:207 [inline]
v9fs_cache_session_get_cookie+0x13c/0x1d4 fs/9p/cache.c:34
v9fs_session_init+0x12e4/0x16ec fs/9p/v9fs.c:475
v9fs_mount+0xd4/0x92c fs/9p/vfs_super.c:122
legacy_get_tree+0xd4/0x16c fs/fs_context.c:662
vfs_get_tree+0x90/0x288 fs/super.c:1780
do_new_mount+0x278/0x900 fs/namespace.c:3352
path_mount+0x590/0xe04 fs/namespace.c:3679
do_mount fs/namespace.c:3692 [inline]
__do_sys_mount fs/namespace.c:3898 [inline]
__se_sys_mount fs/namespace.c:3875 [inline]
__arm64_sys_mount+0x45c/0x594 fs/namespace.c:3875
__invoke_syscall arch/arm64/kernel/syscall.c:34 [inline]
invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48
el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:131
do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:150
el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712
el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598
Showing all locks held in the system:
1 lock held by khungtaskd/31:
#0: ffff80008f387a60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:328
4 locks held by kworker/u8:4/188:
#0: ffff0000c1819948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3222
#1: ffff800097fb7c20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3222
#2: ffff800091fb2710 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x13c/0x9b4 net/core/net_namespace.c:594
#3: ffff800091fbe968 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79
2 locks held by getty/6050:
#0: ffff0000d278f0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
#1: ffff800097f9b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2211
3 locks held by kworker/1:3/6277:
#0: ffff0000c0028948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3222
#1: ffff80009b837c20 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3222
#2: ffff800091fbe968 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79
3 locks held by kworker/u8:17/8041:
#0: ffff0000d1f43148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3222
#1: ffff800098027c20 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3222
#2: ffff800091fbe968 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79
1 lock held by syz-executor/8227:
#0: ffff800091fbe968 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffff800091fbe968 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x704/0xe64 net/core/rtnetlink.c:6632
1 lock held by syz-executor/8233:
#0: ffff800091fbe968 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffff800091fbe968 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x704/0xe64 net/core/rtnetlink.c:6632
2 locks held by syz.1.304/8512:
#0: ffff800091fa4768 (vlan_ioctl_mutex){+.+.}-{3:3}, at: sock_ioctl+0x574/0x838 net/socket.c:1303
#1: ffff800091fbe968 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79
1 lock held by syz.0.308/8525:
#0: ffff800091fbe968 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79
1 lock held by syz.0.308/8526:
#0: ffff800091fbe968 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffff800091fbe968 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x704/0xe64 net/core/rtnetlink.c:6632
1 lock held by syz.2.309/8539:
#0: ffff800091fbe968 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79
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