Warning: Permanently added '[localhost]:52436' (ECDSA) to the list of known hosts.
2021/12/06 11:29:51 fuzzer started
2021/12/06 11:29:51 dialing manager at localhost:35719
2021/12/06 11:29:51 checking machine...
2021/12/06 11:29:51 checking revisions...
syzkaller login: [ 35.641386] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:29:51 testing simple program...
[ 35.685299] cgroup: Unknown subsys name 'net'
[ 35.687266] cgroup: Unknown subsys name 'net_prio'
[ 35.691452] cgroup: Unknown subsys name 'devices'
[ 35.693160] cgroup: Unknown subsys name 'blkio'
[ 35.722430]
[ 35.722901] =========================
[ 35.723884] WARNING: held lock freed!
[ 35.724863] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 35.726388] -------------------------
[ 35.728321] kworker/1:1/31 is freeing memory ffff88800ee1a000-ffff88800ee1a1ff, with a lock still held there!
[ 35.730837] ffff88800ee1a148 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.733141] 3 locks held by kworker/1:1/31:
[ 35.734251] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 35.736540] #1: ffff888009aa7da8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 35.739037] #2: ffff88800ee1a148 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.740952]
[ 35.740952] stack backtrace:
[ 35.741851] CPU: 1 PID: 31 Comm: kworker/1:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.743428] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.745757] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.746828] Call Trace:
[ 35.747355]
[ 35.747939] dump_stack_lvl+0x8b/0xb3
[ 35.748905] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 35.750264] ? kernfs_put.part.0+0x334/0x540
[ 35.751420] kfree+0xb3/0x5a0
[ 35.752271] ? kmem_cache_free+0xce/0x640
[ 35.753363] kernfs_put.part.0+0x334/0x540
[ 35.754493] kernfs_put+0x42/0x50
[ 35.755382] __kernfs_remove+0x7ce/0xb00
[ 35.756453] ? lock_is_held_type+0xd7/0x130
[ 35.757566] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 35.758910] ? down_write+0xde/0x150
[ 35.759661] ? down_write_killable_nested+0x180/0x180
[ 35.760708] kernfs_destroy_root+0x89/0xb0
[ 35.761591] css_free_rwork_fn+0xa28/0xf40
[ 35.762684] process_one_work+0xa30/0x1710
[ 35.763792] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.765002] ? rwlock_bug.part.0+0x90/0x90
[ 35.766090] ? _raw_spin_lock_irq+0x41/0x50
[ 35.767209] worker_thread+0x62a/0x13e0
[ 35.768260] ? process_one_work+0x1710/0x1710
[ 35.769419] kthread+0x40c/0x500
[ 35.770278] ? set_kthread_struct+0x130/0x130
[ 35.771441] ret_from_fork+0x22/0x30
[ 35.772424]
[ 35.773052] ==================================================================
[ 35.774739] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 35.776166] Read of size 8 at addr ffff88800ee1a140 by task kworker/1:1/31
[ 35.777830]
[ 35.778211] CPU: 1 PID: 31 Comm: kworker/1:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.780041] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.782679] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.783956] Call Trace:
[ 35.784494]
[ 35.784930] dump_stack_lvl+0x8b/0xb3
[ 35.785684] print_address_description.constprop.0+0x1f/0x180
[ 35.786857] ? up_write+0x3ac/0x460
[ 35.787567] ? up_write+0x3ac/0x460
[ 35.788301] kasan_report.cold+0x7f/0x11b
[ 35.789120] ? up_write+0x3ac/0x460
[ 35.789834] up_write+0x3ac/0x460
[ 35.790515] css_free_rwork_fn+0xa28/0xf40
[ 35.791356] process_one_work+0xa30/0x1710
[ 35.792201] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.793128] ? rwlock_bug.part.0+0x90/0x90
[ 35.793956] ? _raw_spin_lock_irq+0x41/0x50
[ 35.794785] worker_thread+0x62a/0x13e0
[ 35.795549] ? process_one_work+0x1710/0x1710
[ 35.796423] kthread+0x40c/0x500
[ 35.797070] ? set_kthread_struct+0x130/0x130
[ 35.797934] ret_from_fork+0x22/0x30
[ 35.798663]
[ 35.799111]
[ 35.799425] Allocated by task 281:
[ 35.800107] kasan_save_stack+0x1e/0x40
[ 35.800862] __kasan_kmalloc+0x81/0xa0
[ 35.801602] kernfs_create_root+0x4c/0x410
[ 35.802401] cgroup_setup_root+0x346/0xb60
[ 35.803209] cgroup1_get_tree+0xc1b/0x1370
[ 35.804069] vfs_get_tree+0x8e/0x2f0
[ 35.804786] path_mount+0x131b/0x1f80
[ 35.805524] __x64_sys_mount+0x27e/0x300
[ 35.806295] do_syscall_64+0x3b/0x90
[ 35.807011] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 35.808010]
[ 35.808319] Freed by task 31:
[ 35.808907] kasan_save_stack+0x1e/0x40
[ 35.809683] kasan_set_track+0x21/0x30
[ 35.810437] kasan_set_free_info+0x20/0x30
[ 35.811272] __kasan_slab_free+0x108/0x170
[ 35.812155] kfree+0xc5/0x5a0
[ 35.812789] kernfs_put.part.0+0x334/0x540
[ 35.813636] kernfs_put+0x42/0x50
[ 35.814322] __kernfs_remove+0x7ce/0xb00
[ 35.815125] kernfs_destroy_root+0x89/0xb0
[ 35.815975] css_free_rwork_fn+0xa28/0xf40
[ 35.816813] process_one_work+0xa30/0x1710
[ 35.817612] worker_thread+0x62a/0x13e0
[ 35.818360] kthread+0x40c/0x500
[ 35.818990] ret_from_fork+0x22/0x30
[ 35.819744]
[ 35.820067] The buggy address belongs to the object at ffff88800ee1a000
[ 35.820067] which belongs to the cache kmalloc-512 of size 512
[ 35.822467] The buggy address is located 320 bytes inside of
[ 35.822467] 512-byte region [ffff88800ee1a000, ffff88800ee1a200)
[ 35.824768] The buggy address belongs to the page:
[ 35.825768] page:00000000843572e5 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xee18
[ 35.827567] head:00000000843572e5 order:2 compound_mapcount:0 compound_pincount:0
[ 35.829032] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 35.830177] raw: 0100000000010200 ffffea000039bf00 dead000000000002 ffff888007841c80
[ 35.831719] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
[ 35.833249] page dumped because: kasan: bad access detected
[ 35.834341]
[ 35.834656] Memory state around the buggy address:
[ 35.835606] ffff88800ee1a000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.837029] ffff88800ee1a080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.838440] >ffff88800ee1a100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.839880] ^
[ 35.840925] ffff88800ee1a180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.842358] ffff88800ee1a200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 35.843795] ==================================================================
[ 35.869126] cgroup: Unknown subsys name 'hugetlb'
[ 35.870433] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:29:51 Registers:
info registers vcpu 0
RAX=ffffffff858be8cc RBX=0000000000000000 RCX=0000000000000000 RDX=ffff888015698000
RSI=ffffffff8149e401 RDI=ffffffff840797a8 RBP=ffffffff840797a8 RSP=ffff88801b457b68
R8 =0000000000000000 R9 =ffff88801569a38b R10=ffffffff8149e3e8 R11=0000000000000001
R12=0000000000000206 R13=ffff888015699ad4 R14=ffff88801569a388 R15=0000000000000001
RIP=ffffffff81287228 RFL=00000093 [--S-A-C] 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 000000c000030090 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=00007f4c0bfee690 CR3=000000000e6de000 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 bfe62e42fefa39ef
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=000000000000002d RBX=00000000000003f8 RCX=0000000000000000 RDX=00000000000003f8
RSI=ffffffff823640e1 RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff888009aa7648
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 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=00007ffc41bc8000 CR3=000000000888a000 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=00001f80
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 2525252525252525 2525252525252525
YMM01=0000000000000000 0000000000000000 0000000000ff0000 00000000000000ff
YMM02=0000000000000000 0000000000000000 0000000000ff0000 00000000000000ff
YMM03=0000000000000000 0000000000000000 375afdebbf381c81 00000000000e5cd8
YMM04=0000000000000000 0000000000000000 fc520499b33369fb 000000000012c290
YMM05=0000000000000000 0000000000000000 d3fdd5f48436fbd7 00000000000aeac8
YMM06=0000000000000000 0000000000000000 226b05150c5ac92b 00000000000ae980
YMM07=0000000000000000 0000000000000000 a1fcdcf819d7e1e5 00000000000ae728
YMM08=0000000000000000 0000000000000000 636f72702f006469 6e6f697373657300
YMM09=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM10=0000000000000000 0000000000000000 2020000000002020 2020202020200000
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