Warning: Permanently added '[localhost]:6476' (ECDSA) to the list of known hosts.
2021/12/06 11:28:12 fuzzer started
2021/12/06 11:28:12 dialing manager at localhost:35719
2021/12/06 11:28:12 checking machine...
2021/12/06 11:28:12 checking revisions...
syzkaller login: [ 34.999132] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:28:12 testing simple program...
[ 35.052276] cgroup: Unknown subsys name 'net'
[ 35.054295] cgroup: Unknown subsys name 'net_prio'
[ 35.056100] cgroup: Unknown subsys name 'devices'
[ 35.058605] cgroup: Unknown subsys name 'blkio'
[ 35.080553]
[ 35.080946] =========================
[ 35.081678] WARNING: held lock freed!
[ 35.082420] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 35.083414] -------------------------
[ 35.084747] kworker/0:2/47 is freeing memory ffff88800e2a9400-ffff88800e2a95ff, with a lock still held there!
[ 35.087060] ffff88800e2a9548 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.088836] 3 locks held by kworker/0:2/47:
[ 35.089679] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 35.091691] #1: ffff88800efefda8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 35.093988] #2: ffff88800e2a9548 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.095808]
[ 35.095808] stack backtrace:
[ 35.096672] CPU: 0 PID: 47 Comm: kworker/0:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.098203] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.100349] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.101434] Call Trace:
[ 35.101946]
[ 35.102386] dump_stack_lvl+0x8b/0xb3
[ 35.103150] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 35.104207] ? kernfs_put.part.0+0x334/0x540
[ 35.105100] kfree+0xb3/0x5a0
[ 35.105718] ? kmem_cache_free+0xce/0x640
[ 35.106550] kernfs_put.part.0+0x334/0x540
[ 35.107407] kernfs_put+0x42/0x50
[ 35.108093] __kernfs_remove+0x7ce/0xb00
[ 35.108915] ? lock_is_held_type+0xd7/0x130
[ 35.109777] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 35.110822] ? down_write+0xde/0x150
[ 35.111559] ? down_write_killable_nested+0x180/0x180
[ 35.112576] kernfs_destroy_root+0x89/0xb0
[ 35.113429] css_free_rwork_fn+0xa28/0xf40
[ 35.114266] process_one_work+0xa30/0x1710
[ 35.115107] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.116039] ? rwlock_bug.part.0+0x90/0x90
[ 35.116892] ? _raw_spin_lock_irq+0x41/0x50
[ 35.117767] worker_thread+0x62a/0x13e0
[ 35.118564] ? process_one_work+0x1710/0x1710
[ 35.119456] kthread+0x40c/0x500
[ 35.120129] ? set_kthread_struct+0x130/0x130
[ 35.121081] ret_from_fork+0x22/0x30
[ 35.121822]
[ 35.122325] ==================================================================
[ 35.123711] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 35.124851] Read of size 8 at addr ffff88800e2a9540 by task kworker/0:2/47
[ 35.126182]
[ 35.126492] CPU: 0 PID: 47 Comm: kworker/0:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.127986] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.130179] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.131206] Call Trace:
[ 35.131696]
[ 35.132125] dump_stack_lvl+0x8b/0xb3
[ 35.132865] print_address_description.constprop.0+0x1f/0x180
[ 35.133990] ? up_write+0x3ac/0x460
[ 35.134686] ? up_write+0x3ac/0x460
[ 35.135384] kasan_report.cold+0x7f/0x11b
[ 35.136189] ? up_write+0x3ac/0x460
[ 35.136898] up_write+0x3ac/0x460
[ 35.137567] css_free_rwork_fn+0xa28/0xf40
[ 35.138391] process_one_work+0xa30/0x1710
[ 35.139212] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.140114] ? rwlock_bug.part.0+0x90/0x90
[ 35.140944] ? _raw_spin_lock_irq+0x41/0x50
[ 35.141788] worker_thread+0x62a/0x13e0
[ 35.142560] ? process_one_work+0x1710/0x1710
[ 35.143433] kthread+0x40c/0x500
[ 35.144086] ? set_kthread_struct+0x130/0x130
[ 35.144959] ret_from_fork+0x22/0x30
[ 35.145682]
[ 35.146127]
[ 35.146440] Allocated by task 280:
[ 35.147117] kasan_save_stack+0x1e/0x40
[ 35.147873] __kasan_kmalloc+0x81/0xa0
[ 35.148612] kernfs_create_root+0x4c/0x410
[ 35.149441] cgroup_setup_root+0x346/0xb60
[ 35.150258] cgroup1_get_tree+0xc1b/0x1370
[ 35.151084] vfs_get_tree+0x8e/0x2f0
[ 35.151807] path_mount+0x131b/0x1f80
[ 35.152545] __x64_sys_mount+0x27e/0x300
[ 35.153349] do_syscall_64+0x3b/0x90
[ 35.154055] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 35.155038]
[ 35.155350] Freed by task 47:
[ 35.155943] kasan_save_stack+0x1e/0x40
[ 35.156709] kasan_set_track+0x21/0x30
[ 35.157479] kasan_set_free_info+0x20/0x30
[ 35.158296] __kasan_slab_free+0x108/0x170
[ 35.159110] kfree+0xc5/0x5a0
[ 35.159710] kernfs_put.part.0+0x334/0x540
[ 35.160528] kernfs_put+0x42/0x50
[ 35.161211] __kernfs_remove+0x7ce/0xb00
[ 35.161994] kernfs_destroy_root+0x89/0xb0
[ 35.162806] css_free_rwork_fn+0xa28/0xf40
[ 35.163626] process_one_work+0xa30/0x1710
[ 35.164440] worker_thread+0x62a/0x13e0
[ 35.165221] kthread+0x40c/0x500
[ 35.165871] ret_from_fork+0x22/0x30
[ 35.166593]
[ 35.166907] The buggy address belongs to the object at ffff88800e2a9400
[ 35.166907] which belongs to the cache kmalloc-512 of size 512
[ 35.169326] The buggy address is located 320 bytes inside of
[ 35.169326] 512-byte region [ffff88800e2a9400, ffff88800e2a9600)
[ 35.171582] The buggy address belongs to the page:
[ 35.172514] page:00000000c6a476e3 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe2a8
[ 35.174305] head:00000000c6a476e3 order:2 compound_mapcount:0 compound_pincount:0
[ 35.175744] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 35.176898] raw: 0100000000010200 ffffea0000392600 dead000000000003 ffff888007841c80
[ 35.178394] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
[ 35.179879] page dumped because: kasan: bad access detected
[ 35.180965]
[ 35.181279] Memory state around the buggy address:
[ 35.182212] ffff88800e2a9400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.183601] ffff88800e2a9480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.185017] >ffff88800e2a9500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.186405] ^
[ 35.187434] ffff88800e2a9580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.188834] ffff88800e2a9600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 35.190224] ==================================================================
[ 35.209983] cgroup: Unknown subsys name 'hugetlb'
[ 35.213614] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:28:12 Registers:
info registers vcpu 0
RAX=000000000000002d RBX=00000000000003f8 RCX=0000000000000000 RDX=00000000000003f8
RSI=ffffffff823640e1 RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff88800efef648
R8 =0000000000000000 R9 =000000000000002d R10=ffffffff82365d23 R11=000000000000000a
R12=000000000000002d R13=000000000000002d R14=ffffffff87381a20 R15=dffffc0000000000
RIP=ffffffff82364138 RFL=00000002 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0
ES =0000 0000000000000000 00000000 00000000
CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA]
SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA]
DS =0000 0000000000000000 00000000 00000000
FS =0000 0000000000000000 00000000 00000000
GS =0000 ffff88806ce00000 00000000 00000000
LDT=0000 fffffe0000000000 00000000 00000000
TR =0040 fffffe0000003000 00004087 00008b00 DPL=0 TSS64-busy
GDT= fffffe0000001000 0000007f
IDT= fffffe0000000000 00000fff
CR0=80050033 CR2=00007ffd102e2000 CR3=000000000e0a8000 CR4=00350ef0
DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000
DR6=00000000ffff0ff0 DR7=0000000000000400
EFER=0000000000000d01
FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001fa0
FPR0=0000000000000000 0000 FPR1=0000000000000000 0000
FPR2=0000000000000000 0000 FPR3=0000000000000000 0000
FPR4=0000000000000000 0000 FPR5=0000000000000000 0000
FPR6=0000000000000000 0000 FPR7=0000000000000000 0000
YMM00=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM01=0000000000000000 0000000000000000 0000000000000000 3f847ae147ae147b
YMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM03=0000000000000000 0000000000000000 0000000000000000 3f73d3f72ad883e0
YMM04=0000000000000000 0000000000000000 732f6c61636f6c2f 7273752f3d485441
YMM05=0000000000000000 0000000000000000 622f6c61636f6c2f 7273752f3a6e6962
YMM06=0000000000000000 0000000000000000 73752f3a6e696273 2f7273752f3a6e69
YMM07=0000000000000000 0000000000000000 6e69622f3a6e6962 732f3a6e69622f72
YMM08=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM09=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM10=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM11=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM12=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM13=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM14=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM15=0000000000000000 0000000000000000 0000000000000000 0000000000000000
info registers vcpu 1
RAX=ffffffff84078af0 RBX=ffff8880081a9ac0 RCX=ffffffff8405abe1 RDX=ffffed100d9e7143
RSI=0000000000000001 RDI=ffffffff84078eaf RBP=0000000000000001 RSP=ffff888008207e78
R8 =0000000000000000 R9 =ffff88806cf38a13 R10=ffffed100d9e7142 R11=0000000000000001
R12=ffffed1001035358 R13=ffffffff858bd8d0 R14=0000000000000000 R15=dffffc0000000000
RIP=ffffffff84078afb RFL=00000246 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=1
ES =0000 0000000000000000 00000000 00000000
CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA]
SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA]
DS =0000 0000000000000000 00000000 00000000
FS =0000 0000000000000000 00000000 00000000
GS =0000 ffff88806cf00000 00000000 00000000
LDT=0000 fffffe0000000000 00000000 00000000
TR =0040 fffffe000004a000 00004087 00008b00 DPL=0 TSS64-busy
GDT= fffffe0000048000 0000007f
IDT= fffffe0000000000 00000fff
CR0=80050033 CR2=00007f63475d36d0 CR3=000000000e0a8000 CR4=00350ee0
DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000
DR6=00000000ffff0ff0 DR7=0000000000000400
EFER=0000000000000d01
FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001fa0
FPR0=0000000000000000 0000 FPR1=0000000000000000 0000
FPR2=0000000000000000 0000 FPR3=0000000000000000 0000
FPR4=0000000000000000 0000 FPR5=0000000000000000 0000
FPR6=0000000000000000 0000 FPR7=0000000000000000 0000
YMM00=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM01=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM02=0000000000000000 0000000000000000 0000000000000000 40f1a40000000000
YMM03=0000000000000000 0000000000000000 0000ff0000000000 0000000000000000
YMM04=0000000000000000 0000000000000000 732f6c61636f6c2f 7273752f3d485441
YMM05=0000000000000000 0000000000000000 622f6c61636f6c2f 7273752f3a6e6962
YMM06=0000000000000000 0000000000000000 73752f3a6e696273 2f7273752f3a6e69
YMM07=0000000000000000 0000000000000000 6e69622f3a6e6962 732f3a6e69622f72
YMM08=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM09=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM10=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM11=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM12=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM13=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM14=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM15=0000000000000000 0000000000000000 0000000000000000 0000000000000000