Warning: Permanently added '[localhost]:22232' (ECDSA) to the list of known hosts.
2021/12/06 11:35:16 fuzzer started
2021/12/06 11:35:17 dialing manager at localhost:35719
2021/12/06 11:35:17 checking machine...
2021/12/06 11:35:17 checking revisions...
syzkaller login: [ 35.471556] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:35:17 testing simple program...
[ 35.509480] cgroup: Unknown subsys name 'net'
[ 35.510816] cgroup: Unknown subsys name 'net_prio'
[ 35.513737] cgroup: Unknown subsys name 'devices'
[ 35.516089] cgroup: Unknown subsys name 'blkio'
[ 35.541609]
[ 35.541959] =========================
[ 35.542673] WARNING: held lock freed!
[ 35.543398] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 35.544357] -------------------------
[ 35.545818] kworker/0:2/82 is freeing memory ffff88800fafbc00-ffff88800fafbdff, with a lock still held there!
[ 35.548088] ffff88800fafbd48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.549845] 3 locks held by kworker/0:2/82:
[ 35.550673] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 35.552686] #1: ffff8880091cfda8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 35.554991] #2: ffff88800fafbd48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.556797]
[ 35.556797] stack backtrace:
[ 35.557657] CPU: 0 PID: 82 Comm: kworker/0:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.559167] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.561365] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.562422] Call Trace:
[ 35.562926]
[ 35.563356] dump_stack_lvl+0x8b/0xb3
[ 35.564100] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 35.565127] ? kernfs_put.part.0+0x334/0x540
[ 35.565998] kfree+0xb3/0x5a0
[ 35.566605] ? kmem_cache_free+0xce/0x640
[ 35.567411] kernfs_put.part.0+0x334/0x540
[ 35.568237] kernfs_put+0x42/0x50
[ 35.568910] __kernfs_remove+0x7ce/0xb00
[ 35.569716] ? lock_is_held_type+0xd7/0x130
[ 35.570556] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 35.571569] ? down_write+0xde/0x150
[ 35.572287] ? down_write_killable_nested+0x180/0x180
[ 35.573289] kernfs_destroy_root+0x89/0xb0
[ 35.574115] css_free_rwork_fn+0xa28/0xf40
[ 35.574938] process_one_work+0xa30/0x1710
[ 35.575761] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.576668] ? rwlock_bug.part.0+0x90/0x90
[ 35.577507] ? _raw_spin_lock_irq+0x41/0x50
[ 35.578348] worker_thread+0x62a/0x13e0
[ 35.579131] ? process_one_work+0x1710/0x1710
[ 35.580001] kthread+0x40c/0x500
[ 35.580656] ? set_kthread_struct+0x130/0x130
[ 35.581532] ret_from_fork+0x22/0x30
[ 35.582263]
[ 35.582797] ==================================================================
[ 35.584194] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 35.585337] Read of size 8 at addr ffff88800fafbd40 by task kworker/0:2/82
[ 35.586681]
[ 35.586995] CPU: 0 PID: 82 Comm: kworker/0:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.588534] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.590816] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.591863] Call Trace:
[ 35.592361]
[ 35.592791] dump_stack_lvl+0x8b/0xb3
[ 35.593568] print_address_description.constprop.0+0x1f/0x180
[ 35.594751] ? up_write+0x3ac/0x460
[ 35.595475] ? up_write+0x3ac/0x460
[ 35.596188] kasan_report.cold+0x7f/0x11b
[ 35.597003] ? up_write+0x3ac/0x460
[ 35.597737] up_write+0x3ac/0x460
[ 35.598420] css_free_rwork_fn+0xa28/0xf40
[ 35.599254] process_one_work+0xa30/0x1710
[ 35.600085] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.600994] ? rwlock_bug.part.0+0x90/0x90
[ 35.601830] ? _raw_spin_lock_irq+0x41/0x50
[ 35.602680] worker_thread+0x62a/0x13e0
[ 35.603465] ? process_one_work+0x1710/0x1710
[ 35.604348] kthread+0x40c/0x500
[ 35.605010] ? set_kthread_struct+0x130/0x130
[ 35.605909] ret_from_fork+0x22/0x30
[ 35.606647]
[ 35.607099]
[ 35.607415] Allocated by task 281:
[ 35.608098] kasan_save_stack+0x1e/0x40
[ 35.608876] __kasan_kmalloc+0x81/0xa0
[ 35.609644] kernfs_create_root+0x4c/0x410
[ 35.610464] cgroup_setup_root+0x346/0xb60
[ 35.611297] cgroup1_get_tree+0xc1b/0x1370
[ 35.612124] vfs_get_tree+0x8e/0x2f0
[ 35.612850] path_mount+0x131b/0x1f80
[ 35.613599] __x64_sys_mount+0x27e/0x300
[ 35.614397] do_syscall_64+0x3b/0x90
[ 35.615123] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 35.616132]
[ 35.616446] Freed by task 82:
[ 35.617048] kasan_save_stack+0x1e/0x40
[ 35.617839] kasan_set_track+0x21/0x30
[ 35.618596] kasan_set_free_info+0x20/0x30
[ 35.619423] __kasan_slab_free+0x108/0x170
[ 35.620253] kfree+0xc5/0x5a0
[ 35.620859] kernfs_put.part.0+0x334/0x540
[ 35.621699] kernfs_put+0x42/0x50
[ 35.622373] __kernfs_remove+0x7ce/0xb00
[ 35.623160] kernfs_destroy_root+0x89/0xb0
[ 35.623981] css_free_rwork_fn+0xa28/0xf40
[ 35.624805] process_one_work+0xa30/0x1710
[ 35.625659] worker_thread+0x62a/0x13e0
[ 35.626438] kthread+0x40c/0x500
[ 35.627097] ret_from_fork+0x22/0x30
[ 35.627822]
[ 35.628137] The buggy address belongs to the object at ffff88800fafbc00
[ 35.628137] which belongs to the cache kmalloc-512 of size 512
[ 35.630551] The buggy address is located 320 bytes inside of
[ 35.630551] 512-byte region [ffff88800fafbc00, ffff88800fafbe00)
[ 35.632813] The buggy address belongs to the page:
[ 35.633771] page:0000000088155c49 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xfaf8
[ 35.635559] head:0000000088155c49 order:2 compound_mapcount:0 compound_pincount:0
[ 35.637017] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 35.638167] raw: 0100000000010200 ffffea00003a4500 dead000000000002 ffff888007841c80
[ 35.639677] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
[ 35.641177] page dumped because: kasan: bad access detected
[ 35.642285]
[ 35.642600] Memory state around the buggy address:
[ 35.643540] ffff88800fafbc00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.644956] ffff88800fafbc80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.646371] >ffff88800fafbd00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.647776] ^
[ 35.648816] ffff88800fafbd80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.650226] ffff88800fafbe00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 35.651626] ==================================================================
[ 35.679951] cgroup: Unknown subsys name 'hugetlb'
[ 35.681161] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:35:17 Registers:
info registers vcpu 0
RAX=dffffc0000000060 RBX=00000000000003fd RCX=0000000000000000 RDX=00000000000003fd
RSI=ffffffff8236405c RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff8880091cf5f0
R8 =0000000000000029 R9 =000000000000002d R10=ffffffff8234ae1b R11=000000000000000a
R12=0000000000000020 R13=fffffbfff0e70397 R14=fffffbfff0e7034e R15=dffffc0000000000
RIP=ffffffff823640b0 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=00007f52d70e76d0 CR3=000000000d45c000 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=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=000055c2c30e45e0 CR3=000000000d45c000 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 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