Warning: Permanently added '[localhost]:40553' (ECDSA) to the list of known hosts.
2021/12/06 11:22:28 fuzzer started
2021/12/06 11:22:29 dialing manager at localhost:35719
2021/12/06 11:22:29 checking machine...
2021/12/06 11:22:29 checking revisions...
syzkaller login: [ 36.072452] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:22:29 testing simple program...
[ 36.119629] cgroup: Unknown subsys name 'net'
[ 36.120626] cgroup: Unknown subsys name 'net_prio'
[ 36.122733] cgroup: Unknown subsys name 'devices'
[ 36.123814] cgroup: Unknown subsys name 'blkio'
[ 36.162281]
[ 36.162562] =========================
[ 36.163027] WARNING: held lock freed!
[ 36.163486] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 36.164105] -------------------------
[ 36.164586] kworker/1:2/48 is freeing memory ffff8880087d0400-ffff8880087d05ff, with a lock still held there!
[ 36.165871] ffff8880087d0548 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 36.166995] 3 locks held by kworker/1:2/48:
[ 36.167514] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 36.176514] #1: ffff88800b6afda8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 36.177967] #2: ffff8880087d0548 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 36.179123]
[ 36.179123] stack backtrace:
[ 36.179686] CPU: 1 PID: 48 Comm: kworker/1:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 36.192804] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 36.194185] Workqueue: cgroup_destroy css_free_rwork_fn
[ 36.194847] Call Trace:
[ 36.195160]
[ 36.195430] dump_stack_lvl+0x8b/0xb3
[ 36.195950] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 36.196626] ? kernfs_put.part.0+0x334/0x540
[ 36.197191] kfree+0xb3/0x5a0
[ 36.197570] ? kmem_cache_free+0xce/0x640
[ 36.198077] kernfs_put.part.0+0x334/0x540
[ 36.198601] kernfs_put+0x42/0x50
[ 36.199036] __kernfs_remove+0x7ce/0xb00
[ 36.199533] ? lock_is_held_type+0xd7/0x130
[ 36.200065] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 36.204914] ? down_write+0xde/0x150
[ 36.205373] ? down_write_killable_nested+0x180/0x180
[ 36.206043] kernfs_destroy_root+0x89/0xb0
[ 36.206563] css_free_rwork_fn+0xa28/0xf40
[ 36.207080] process_one_work+0xa30/0x1710
[ 36.207601] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 36.208178] ? rwlock_bug.part.0+0x90/0x90
[ 36.208748] ? _raw_spin_lock_irq+0x41/0x50
[ 36.209270] worker_thread+0x62a/0x13e0
[ 36.209783] ? process_one_work+0x1710/0x1710
[ 36.210354] kthread+0x40c/0x500
[ 36.210805] ? set_kthread_struct+0x130/0x130
[ 36.211345] ret_from_fork+0x22/0x30
[ 36.211841]
[ 36.212312] ==================================================================
[ 36.213253] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 36.213976] Read of size 8 at addr ffff8880087d0540 by task kworker/1:2/48
[ 36.214846]
[ 36.215049] CPU: 1 PID: 48 Comm: kworker/1:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 36.216037] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 36.217476] Workqueue: cgroup_destroy css_free_rwork_fn
[ 36.218142] Call Trace:
[ 36.218462]
[ 36.218759] dump_stack_lvl+0x8b/0xb3
[ 36.219271] print_address_description.constprop.0+0x1f/0x180
[ 36.220027] ? up_write+0x3ac/0x460
[ 36.224627] ? up_write+0x3ac/0x460
[ 36.225129] kasan_report.cold+0x7f/0x11b
[ 36.225660] ? up_write+0x3ac/0x460
[ 36.226128] up_write+0x3ac/0x460
[ 36.226556] css_free_rwork_fn+0xa28/0xf40
[ 36.227135] process_one_work+0xa30/0x1710
[ 36.227683] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 36.228273] ? rwlock_bug.part.0+0x90/0x90
[ 36.232845] ? _raw_spin_lock_irq+0x41/0x50
[ 36.233383] worker_thread+0x62a/0x13e0
[ 36.233928] ? process_one_work+0x1710/0x1710
[ 36.234484] kthread+0x40c/0x500
[ 36.234937] ? set_kthread_struct+0x130/0x130
[ 36.235492] ret_from_fork+0x22/0x30
[ 36.236007]
[ 36.236300]
[ 36.236583] Allocated by task 281:
[ 36.237030] kasan_save_stack+0x1e/0x40
[ 36.237516] __kasan_kmalloc+0x81/0xa0
[ 36.238041] kernfs_create_root+0x4c/0x410
[ 36.238558] cgroup_setup_root+0x346/0xb60
[ 36.239110] cgroup1_get_tree+0xc1b/0x1370
[ 36.239625] vfs_get_tree+0x8e/0x2f0
[ 36.240128] path_mount+0x131b/0x1f80
[ 36.263242] __x64_sys_mount+0x27e/0x300
[ 36.263761] do_syscall_64+0x3b/0x90
[ 36.264225] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 36.264906]
[ 36.265108] Freed by task 48:
[ 36.265481] kasan_save_stack+0x1e/0x40
[ 36.266013] kasan_set_track+0x21/0x30
[ 36.266486] kasan_set_free_info+0x20/0x30
[ 36.267032] __kasan_slab_free+0x108/0x170
[ 36.267547] kfree+0xc5/0x5a0
[ 36.267971] kernfs_put.part.0+0x334/0x540
[ 36.268664] kernfs_put+0x42/0x50
[ 36.269121] __kernfs_remove+0x7ce/0xb00
[ 36.269699] kernfs_destroy_root+0x89/0xb0
[ 36.270213] css_free_rwork_fn+0xa28/0xf40
[ 36.270737] process_one_work+0xa30/0x1710
[ 36.271301] worker_thread+0x62a/0x13e0
[ 36.271808] kthread+0x40c/0x500
[ 36.272223] ret_from_fork+0x22/0x30
[ 36.272690]
[ 36.272884] The buggy address belongs to the object at ffff8880087d0400
[ 36.272884] which belongs to the cache kmalloc-512 of size 512
[ 36.274362] The buggy address is located 320 bytes inside of
[ 36.274362] 512-byte region [ffff8880087d0400, ffff8880087d0600)
[ 36.275807] The buggy address belongs to the page:
[ 36.276456] page:00000000289ea018 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x87d0
[ 36.277620] head:00000000289ea018 order:2 compound_mapcount:0 compound_pincount:0
[ 36.278565] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 36.279313] raw: 0100000000010200 ffffea0000395d00 dead000000000002 ffff888007841c80
[ 36.280282] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
[ 36.285323] page dumped because: kasan: bad access detected
[ 36.286074]
[ 36.286281] Memory state around the buggy address:
[ 36.286935] ffff8880087d0400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.287842] ffff8880087d0480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.288839] >ffff8880087d0500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.289745] ^
[ 36.290479] ffff8880087d0580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.291420] ffff8880087d0600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 36.292314] ==================================================================
[ 36.358572] cgroup: Unknown subsys name 'hugetlb'
[ 36.359387] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:22:30 Registers:
info registers vcpu 0
RAX=ffffffff84078af0 RBX=ffffffff85032600 RCX=ffffffff8405abe1 RDX=ffffed100d9c7143
RSI=0000000000000001 RDI=ffffffff84078eaf RBP=0000000000000000 RSP=ffffffff85007e40
R8 =0000000000000000 R9 =ffff88806ce38a13 R10=ffffed100d9c7142 R11=0000000000000001
R12=fffffbfff0a064c0 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 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=000055623b085d00 CR3=000000000e740000 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 0000000000000000
YMM02=0000000000000000 0000000000000000 0000000000000000 410a2cc000000000
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
info registers vcpu 1
RAX=000000000000002b RBX=00000000000003f8 RCX=0000000000000000 RDX=00000000000003f8
RSI=ffffffff823640e1 RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff88800b6af6c0
R8 =0000000000000000 R9 =000000000000002b R10=ffffffff82365d23 R11=000000000000000a
R12=000000000000002b R13=000000000000002b 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 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=00007ffec9474000 CR3=000000000e740000 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 41302323c33c01f6
YMM01=0000000000000000 0000000000000000 0000000000000000 3f847ae147ae147b
YMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM03=0000000000000000 0000000000000000 0000000000000000 3f72f67f1b9e0f7a
YMM04=0000000000000000 0000000000000000 00007f94d0ae1500 0000000000415710
YMM05=0000000000000000 0000000000000000 0000000000000000 000000c0004d4030
YMM06=0000000000000000 0000000000000000 0000000000505007 000000c0000767c0
YMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM08=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM09=0000000000000000 0000000000000000 00000000004643c1 0000000000000000
YMM10=0000000000000000 0000000000000000 000000c0005ba0a0 000000c000154840
YMM11=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM12=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM13=0000000000000000 0000000000000000 000000c0002fce10 000000c000331ba8
YMM14=0000000000000000 0000000000000000 000000c000331bc0 000000c000066bc0
YMM15=0000000000000000 0000000000000000 000000c000331bd0 000000c000331bc8