Warning: Permanently added '[localhost]:53155' (ECDSA) to the list of known hosts.
2021/12/06 11:39:07 fuzzer started
2021/12/06 11:39:08 dialing manager at localhost:35719
2021/12/06 11:39:08 checking machine...
2021/12/06 11:39:08 checking revisions...
syzkaller login: [ 35.250850] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:39:08 testing simple program...
[ 35.290314] cgroup: Unknown subsys name 'net'
[ 35.291558] cgroup: Unknown subsys name 'net_prio'
[ 35.293445] cgroup: Unknown subsys name 'devices'
[ 35.295029] cgroup: Unknown subsys name 'blkio'
[ 35.314788]
[ 35.315135] =========================
[ 35.315857] WARNING: held lock freed!
[ 35.316600] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 35.317557] -------------------------
[ 35.318436] kworker/0:2/47 is freeing memory ffff88801d0ebc00-ffff88801d0ebdff, with a lock still held there!
[ 35.321270] ffff88801d0ebd48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.323004] 3 locks held by kworker/0:2/47:
[ 35.323852] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 35.325843] #1: ffff88800b477da8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 35.328131] #2: ffff88801d0ebd48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.329928]
[ 35.329928] stack backtrace:
[ 35.330779] CPU: 0 PID: 47 Comm: kworker/0:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.332297] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.334520] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.335585] Call Trace:
[ 35.336088]
[ 35.336529] dump_stack_lvl+0x8b/0xb3
[ 35.337280] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 35.338327] ? kernfs_put.part.0+0x334/0x540
[ 35.339195] kfree+0xb3/0x5a0
[ 35.339805] ? kmem_cache_free+0xce/0x640
[ 35.340613] kernfs_put.part.0+0x334/0x540
[ 35.341457] kernfs_put+0x42/0x50
[ 35.342142] __kernfs_remove+0x7ce/0xb00
[ 35.342945] ? lock_is_held_type+0xd7/0x130
[ 35.343815] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 35.344851] ? down_write+0xde/0x150
[ 35.345580] ? down_write_killable_nested+0x180/0x180
[ 35.346600] kernfs_destroy_root+0x89/0xb0
[ 35.347456] css_free_rwork_fn+0xa28/0xf40
[ 35.348299] process_one_work+0xa30/0x1710
[ 35.349144] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.350055] ? rwlock_bug.part.0+0x90/0x90
[ 35.350883] ? _raw_spin_lock_irq+0x41/0x50
[ 35.351736] worker_thread+0x62a/0x13e0
[ 35.352522] ? process_one_work+0x1710/0x1710
[ 35.353404] kthread+0x40c/0x500
[ 35.354067] ? set_kthread_struct+0x130/0x130
[ 35.354946] ret_from_fork+0x22/0x30
[ 35.355692]
[ 35.356218] ==================================================================
[ 35.357644] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 35.358830] Read of size 8 at addr ffff88801d0ebd40 by task kworker/0:2/47
[ 35.360221]
[ 35.360532] CPU: 0 PID: 47 Comm: kworker/0:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.362066] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.364318] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.365393] Call Trace:
[ 35.365887]
[ 35.366316] dump_stack_lvl+0x8b/0xb3
[ 35.367059] print_address_description.constprop.0+0x1f/0x180
[ 35.368237] ? up_write+0x3ac/0x460
[ 35.368947] ? up_write+0x3ac/0x460
[ 35.369651] kasan_report.cold+0x7f/0x11b
[ 35.370478] ? up_write+0x3ac/0x460
[ 35.371203] up_write+0x3ac/0x460
[ 35.371901] css_free_rwork_fn+0xa28/0xf40
[ 35.372755] process_one_work+0xa30/0x1710
[ 35.373609] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.374533] ? rwlock_bug.part.0+0x90/0x90
[ 35.375373] ? _raw_spin_lock_irq+0x41/0x50
[ 35.376224] worker_thread+0x62a/0x13e0
[ 35.377008] ? process_one_work+0x1710/0x1710
[ 35.377889] kthread+0x40c/0x500
[ 35.378551] ? set_kthread_struct+0x130/0x130
[ 35.379438] ret_from_fork+0x22/0x30
[ 35.380176]
[ 35.380627]
[ 35.380944] Allocated by task 281:
[ 35.381629] kasan_save_stack+0x1e/0x40
[ 35.382409] __kasan_kmalloc+0x81/0xa0
[ 35.383169] kernfs_create_root+0x4c/0x410
[ 35.384014] cgroup_setup_root+0x346/0xb60
[ 35.384844] cgroup1_get_tree+0xc1b/0x1370
[ 35.385676] vfs_get_tree+0x8e/0x2f0
[ 35.386407] path_mount+0x131b/0x1f80
[ 35.387154] __x64_sys_mount+0x27e/0x300
[ 35.387958] do_syscall_64+0x3b/0x90
[ 35.388686] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 35.389696]
[ 35.390012] Freed by task 47:
[ 35.390614] kasan_save_stack+0x1e/0x40
[ 35.391409] kasan_set_track+0x21/0x30
[ 35.392171] kasan_set_free_info+0x20/0x30
[ 35.393000] __kasan_slab_free+0x108/0x170
[ 35.393828] kfree+0xc5/0x5a0
[ 35.394439] kernfs_put.part.0+0x334/0x540
[ 35.395270] kernfs_put+0x42/0x50
[ 35.395952] __kernfs_remove+0x7ce/0xb00
[ 35.396745] kernfs_destroy_root+0x89/0xb0
[ 35.397572] css_free_rwork_fn+0xa28/0xf40
[ 35.398402] process_one_work+0xa30/0x1710
[ 35.399231] worker_thread+0x62a/0x13e0
[ 35.400022] kthread+0x40c/0x500
[ 35.400683] ret_from_fork+0x22/0x30
[ 35.401409]
[ 35.401724] The buggy address belongs to the object at ffff88801d0ebc00
[ 35.401724] which belongs to the cache kmalloc-512 of size 512
[ 35.404149] The buggy address is located 320 bytes inside of
[ 35.404149] 512-byte region [ffff88801d0ebc00, ffff88801d0ebe00)
[ 35.406426] The buggy address belongs to the page:
[ 35.407414] page:00000000738e4980 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1d0e8
[ 35.409281] head:00000000738e4980 order:2 compound_mapcount:0 compound_pincount:0
[ 35.410793] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 35.411987] raw: 0100000000010200 dead000000000100 dead000000000122 ffff888007841c80
[ 35.413547] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
[ 35.415104] page dumped because: kasan: bad access detected
[ 35.416267]
[ 35.416600] Memory state around the buggy address:
[ 35.417585] ffff88801d0ebc00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.419044] ffff88801d0ebc80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.420503] >ffff88801d0ebd00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.421953] ^
[ 35.423026] ffff88801d0ebd80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.424497] ffff88801d0ebe00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 35.425926] ==================================================================
[ 35.458290] cgroup: Unknown subsys name 'hugetlb'
[ 35.462689] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:39:08 Registers:
info registers vcpu 0
RAX=dffffc0000000005 RBX=00000000000003f9 RCX=0000000000000000 RDX=00000000000003f9
RSI=ffffffff8236405c RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff88800b477690
R8 =0000000000000001 R9 =ffff88800b47761b R10=ffffed100168eec3 R11=0000000000000001
R12=0000000000000000 R13=0000000000000001 R14=ffffffff8235e710 R15=ffffffff87381a70
RIP=ffffffff823640b0 RFL=00000006 [-----P-] 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=00007ffc0373bb98 CR3=000000001b350000 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 4106d24000000000
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=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=00007f0d73a4e790 CR3=000000001b350000 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 413852fedc845522
YMM01=0000000000000000 0000000000000000 0000000000000000 3f847ae147ae147b
YMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM03=0000000000000000 0000000000000000 0000000000000000 3f71cc12e2845408
YMM04=0000000000000000 0000000000000000 00007f12e4df0d00 0000000000415710
YMM05=0000000000000000 0000000000000000 0000000000b12758 000000c00000e7a0
YMM06=0000000000000000 0000000000000000 0000000000505007 000000c000337fc0
YMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM08=0000000000000000 0000000000000000 00000000004643c6 0000000000000000
YMM09=0000000000000000 0000000000000000 00000000004643c1 0000000000000000
YMM10=0000000000000000 0000000000000000 000000c00000cbc0 000000c0001589a0
YMM11=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM12=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM13=0000000000000000 0000000000000000 000000c0000d9480 000000c0000d9478
YMM14=0000000000000000 0000000000000000 000000c0000d9490 000000c0000d9488
YMM15=0000000000000000 0000000000000000 000000c0000d94a0 000000c0000d9498