INFO: task syz-executor.2:6239 blocked for more than 143 seconds.
Not tainted 5.15.156-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:27960 pid: 6239 ppid: 3516 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5030 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6376
schedule+0x11b/0x1f0 kernel/sched/core.c:6459
d_wait_lookup+0x1f0/0x2c0 fs/dcache.c:2563
d_alloc_parallel+0xa5e/0x1390 fs/dcache.c:2645
lookup_open fs/namei.c:3387 [inline]
open_last_lookups fs/namei.c:3532 [inline]
path_openat+0x96f/0x2f20 fs/namei.c:3739
do_filp_open+0x21c/0x460 fs/namei.c:3769
do_sys_openat2+0x13b/0x500 fs/open.c:1253
do_sys_open fs/open.c:1269 [inline]
__do_sys_openat fs/open.c:1285 [inline]
__se_sys_openat fs/open.c:1280 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1280
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f0ac4818ea9
RSP: 002b:00007f0ac2d6a0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f0ac4947050 RCX: 00007f0ac4818ea9
RDX: 0000000000000000 RSI: 0000000020000100 RDI: ffffffffffffff9c
RBP: 00007f0ac48654a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f0ac4947050 R15: 00007ffd255ccd88
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8c91fb20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3257:
#0: ffff888024721098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1: ffffc9000229b2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1db0 drivers/tty/n_tty.c:2158
3 locks held by kworker/u4:8/4626:
3 locks held by kworker/1:12/4685:
#0: ffff888023e48538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc90003b3fd20 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
#2: ffffffff8d9e7688 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xcc/0x1720 net/ipv6/addrconf.c:4112
3 locks held by kworker/1:13/4686:
#0: ffff888011c70938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc90004437d20 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
#2: ffffffff8d9e7688 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xa/0x50 net/core/link_watch.c:251
2 locks held by kworker/0:12/4750:
#0: ffff888011c72138 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc90004807d20 ((work_completion)(&rew.rew_work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
2 locks held by syz-executor.2/6203:
1 lock held by syz-executor.2/6239:
#0: ffff888058898188 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:799 [inline]
#0: ffff888058898188 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: open_last_lookups fs/namei.c:3531 [inline]
#0: ffff888058898188 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: path_openat+0x815/0x2f20 fs/namei.c:3739
1 lock held by syz-executor.1/6359:
1 lock held by syz-executor.1/6386:
#0: ffff8880588986d0 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:799 [inline]
#0: ffff8880588986d0 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: open_last_lookups fs/namei.c:3531 [inline]
#0: ffff8880588986d0 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: path_openat+0x815/0x2f20 fs/namei.c:3739
1 lock held by syz-executor.3/6364:
1 lock held by syz-executor.3/6387:
#0: ffff888058898c18 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:799 [inline]
#0: ffff888058898c18 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: open_last_lookups fs/namei.c:3531 [inline]
#0: ffff888058898c18 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: path_openat+0x815/0x2f20 fs/namei.c:3739
1 lock held by syz-executor.4/6489:
1 lock held by syz-executor.4/6503:
#0: ffff888049c9c188 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:799 [inline]
#0: ffff888049c9c188 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: open_last_lookups fs/namei.c:3531 [inline]
#0: ffff888049c9c188 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: path_openat+0x815/0x2f20 fs/namei.c:3739
3 locks held by syz-executor.4/7077:
#0: ffffffff8d9e7688 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
#0: ffffffff8d9e7688 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x94c/0xee0 net/core/rtnetlink.c:5626
#1: ffff888061aa93e8 (&wg->device_update_lock){+.+.}-{3:3}, at: wg_open+0x224/0x410 drivers/net/wireguard/device.c:49
#2: ffffffff8c9240e8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:322 [inline]
#2: ffffffff8c9240e8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x350/0x740 kernel/rcu/tree_exp.h:845
2 locks held by syz-executor.0/7192:
#0: ffff88809815e210 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:789 [inline]
#0: ffff88809815e210 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: __sock_release net/socket.c:648 [inline]
#0: ffff88809815e210 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: sock_close+0x98/0x230 net/socket.c:1336
#1: ffffffff8c9240e8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:322 [inline]
#1: ffffffff8c9240e8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x350/0x740 kernel/rcu/tree_exp.h:845
2 locks held by syz-executor.2/7206:
1 lock held by syz-executor.3/7214:
#0: ffffffff8d9dbad0 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x37b/0x5d0 net/core/net_namespace.c:469
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.156-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xe72/0xeb0 kernel/hung_task.c:295
kthread+0x3f6/0x4f0 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 6359 Comm: syz-executor.1 Not tainted 5.15.156-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:pagecache_get_page+0x1/0x1010 mm/filemap.c:1890
Code: 5f 5d c3 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 32 fc ff ff e8 21 a4 21 00 48 8d 54 24 60 e9 23 fc ff ff e8 b2 1f 75 08 66 90 55 <48> 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec e0 00 00
RSP: 0018:ffffc90002db7218 EFLAGS: 00000206
RAX: 00000000ffff7f7f RBX: ffff888145eea030 RCX: 0000000000108c48
RDX: 0000000000000007 RSI: 00000000000c61b4 RDI: ffff888145eea030
RBP: ffff888145ee9e38 R08: ffffffff81e5a581 R09: fffff94000171fa7
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 0000000000000400 R14: ffff888145ee97a8 R15: 00000000000c61b4
FS: 00007f24476cf6c0(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555555830938 CR3: 0000000077b47000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
find_or_create_page include/linux/pagemap.h:420 [inline]
grow_dev_page fs/buffer.c:949 [inline]
grow_buffers fs/buffer.c:1014 [inline]
__getblk_slow fs/buffer.c:1041 [inline]
__getblk_gfp+0x22a/0xaf0 fs/buffer.c:1336
__bread_gfp+0x2a/0x390 fs/buffer.c:1381
sb_bread include/linux/buffer_head.h:337 [inline]
get_branch+0x2c3/0x6e0 fs/sysv/itree.c:101
get_block+0x16c/0x1790 fs/sysv/itree.c:221
block_read_full_page+0x2f9/0xde0 fs/buffer.c:2290
do_read_cache_page+0x752/0x1040
read_mapping_page include/linux/pagemap.h:515 [inline]
dir_get_page fs/sysv/dir.c:58 [inline]
sysv_find_entry+0x1b0/0x650 fs/sysv/dir.c:146
sysv_inode_by_name+0x9e/0x3f0 fs/sysv/dir.c:360
sysv_lookup+0x63/0xe0 fs/sysv/namei.c:38
lookup_open fs/namei.c:3440 [inline]
open_last_lookups fs/namei.c:3532 [inline]
path_openat+0x111d/0x2f20 fs/namei.c:3739
do_filp_open+0x21c/0x460 fs/namei.c:3769
do_sys_openat2+0x13b/0x500 fs/open.c:1253
do_sys_open fs/open.c:1269 [inline]
__do_sys_openat fs/open.c:1285 [inline]
__se_sys_openat fs/open.c:1280 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1280
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f244915cea9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f24476cf0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f244928af80 RCX: 00007f244915cea9
RDX: 0000000000000000 RSI: 0000000020000100 RDI: ffffffffffffff9c
RBP: 00007f24491a94a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f244928af80 R15: 00007ffc2c16b158