IPVS: ftp: loaded support on port[0] = 21
INFO: task syz-executor311:8122 blocked for more than 140 seconds.
Not tainted 4.19.211-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor311 D27536 8122 8121 0x00000000
Call Trace:
context_switch kernel/sched/core.c:2828 [inline]
__schedule+0x887/0x2040 kernel/sched/core.c:3517
schedule+0x8d/0x1b0 kernel/sched/core.c:3561
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619
__mutex_lock_common kernel/locking/mutex.c:1016 [inline]
__mutex_lock+0x5f0/0x1190 kernel/locking/mutex.c:1078
fuse_lock_inode+0xaf/0xe0 fs/fuse/inode.c:365
fuse_lookup+0x86/0x410 fs/fuse/dir.c:367
__lookup_slow+0x246/0x4a0 fs/namei.c:1672
lookup_slow fs/namei.c:1689 [inline]
walk_component+0x7ac/0xda0 fs/namei.c:1811
link_path_walk.part.0+0x901/0x1230 fs/namei.c:2142
link_path_walk fs/namei.c:2073 [inline]
path_openat+0x1db/0x2df0 fs/namei.c:3536
do_filp_open+0x18c/0x3f0 fs/namei.c:3567
do_sys_open+0x3b3/0x520 fs/open.c:1085
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7fe6a33aae58
Code: Bad RIP value.
RSP: 002b:00007ffc1c34a740 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007ffc1c34a7b0 RCX: 00007fe6a33aae58
RDX: 0000000000090800 RSI: 00007fe6a3401004 RDI: 00000000ffffff9c
RBP: 0000000000000002 R08: 0000000000090800 R09: 00007fe6a3401004
R10: 0000000000000000 R11: 0000000000000287 R12: 00007ffc1c34a93c
R13: 0000000000000002 R14: 00007ffc1c34a990 R15: 00007ffc1c34a980
INFO: task syz-executor311:8148 blocked for more than 140 seconds.
Not tainted 4.19.211-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor311 D27528 8148 8122 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2828 [inline]
__schedule+0x887/0x2040 kernel/sched/core.c:3517
schedule+0x8d/0x1b0 kernel/sched/core.c:3561
request_wait_answer+0x3dc/0x750 fs/fuse/dev.c:485
__fuse_request_send+0x123/0x1c0 fs/fuse/dev.c:505
fuse_simple_request+0x2e6/0x820 fs/fuse/dev.c:576
fuse_lookup_name+0x24c/0x5c0 fs/fuse/dir.c:330
fuse_lookup+0xdf/0x410 fs/fuse/dir.c:368
__lookup_slow+0x246/0x4a0 fs/namei.c:1672
lookup_slow fs/namei.c:1689 [inline]
walk_component+0x7ac/0xda0 fs/namei.c:1811
link_path_walk.part.0+0x901/0x1230 fs/namei.c:2142
link_path_walk fs/namei.c:2270 [inline]
path_lookupat+0xe4/0x8d0 fs/namei.c:2318
do_o_path fs/namei.c:3511 [inline]
path_openat+0x1f92/0x2df0 fs/namei.c:3533
do_filp_open+0x18c/0x3f0 fs/namei.c:3567
do_sys_open+0x3b3/0x520 fs/open.c:1085
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7fe6a33ab1c9
Code: Bad RIP value.
RSP: 002b:00007fe6a333b2f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fe6a34344d0 RCX: 00007fe6a33ab1c9
RDX: 0000000000200000 RSI: 0000000020000340 RDI: ffffffffffffff9c
RBP: 00007fe6a34011bc R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e
R13: 65646f6d746f6f72 R14: 6873612f7665642f R15: 00007fe6a34344d8
Showing all locks held in the system:
1 lock held by ksoftirqd/0/9:
#0: 00000000e500f43e (&rq->lock){-.-.}, at: rq_lock kernel/sched/sched.h:1826 [inline]
#0: 00000000e500f43e (&rq->lock){-.-.}, at: __schedule+0x1f9/0x2040 kernel/sched/core.c:3455
1 lock held by khungtaskd/1570:
#0: 000000005235cee2 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441
2 locks held by syz-executor311/8122:
#0: 000000002e4ad9c1 (&type->i_mutex_dir_key#7){++++}, at: inode_lock_shared include/linux/fs.h:758 [inline]
#0: 000000002e4ad9c1 (&type->i_mutex_dir_key#7){++++}, at: lookup_slow fs/namei.c:1688 [inline]
#0: 000000002e4ad9c1 (&type->i_mutex_dir_key#7){++++}, at: walk_component+0x798/0xda0 fs/namei.c:1811
#1: 00000000aca68daf (&fi->mutex){+.+.}, at: fuse_lock_inode+0xaf/0xe0 fs/fuse/inode.c:365
2 locks held by syz-executor311/8148:
#0: 000000002e4ad9c1 (&type->i_mutex_dir_key#7){++++}, at: inode_lock_shared include/linux/fs.h:758 [inline]
#0: 000000002e4ad9c1 (&type->i_mutex_dir_key#7){++++}, at: lookup_slow fs/namei.c:1688 [inline]
#0: 000000002e4ad9c1 (&type->i_mutex_dir_key#7){++++}, at: walk_component+0x798/0xda0 fs/namei.c:1811
#1: 00000000aca68daf (&fi->mutex){+.+.}, at: fuse_lock_inode+0xaf/0xe0 fs/fuse/inode.c:365
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline]
watchdog+0x991/0xe60 kernel/hung_task.c:287
kthread+0x33f/0x460 kernel/kthread.c:259
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4694 Comm: systemd-journal Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:___bpf_prog_run+0x6e/0x4e80 kernel/bpf/core.c:1065
Code: ff 4c 89 f0 4c 89 f2 48 c1 e8 03 83 e2 07 0f b6 04 18 38 d0 7f 08 84 c0 0f 85 f7 38 00 00 45 0f b6 3e 4a 8d 3c fd 60 b4 6f 88 <4c> 89 fe 48 89 f8 48 c1 e8 03 80 3c 18 00 0f 85 c7 38 00 00 43 ff
RSP: 0018:ffff8880a082fa30 EFLAGS: 00000246
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffff8880a082fe70
RDX: 0000000000000000 RSI: ffffffff816c36e5 RDI: ffffffff886fba00
RBP: ffff8880a082fb00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000007 R11: 0000000000000000 R12: ffffffff886fb460
R13: ffffed1014105f62 R14: ffffc90001ad4058 R15: 00000000000000b4
FS: 00007fc6658928c0(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc662c6c000 CR3: 00000000a084c000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace: