Warning: Permanently added '[localhost]:34989' (ECDSA) to the list of known hosts.
2021/12/06 11:33:42 fuzzer started
2021/12/06 11:33:42 dialing manager at localhost:35719
2021/12/06 11:33:42 checking machine...
2021/12/06 11:33:42 checking revisions...
syzkaller login: [ 35.458154] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:33:43 testing simple program...
[ 35.504516] cgroup: Unknown subsys name 'net'
[ 35.506266] cgroup: Unknown subsys name 'net_prio'
[ 35.507900] cgroup: Unknown subsys name 'devices'
[ 35.509627] cgroup: Unknown subsys name 'blkio'
[ 35.530542]
[ 35.530892] =========================
[ 35.531630] WARNING: held lock freed!
[ 35.532366] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 35.533557] -------------------------
[ 35.534687] kworker/0:1/10 is freeing memory ffff88800f8d9800-ffff88800f8d99ff, with a lock still held there!
[ 35.536886] ffff88800f8d9948 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.538625] 3 locks held by kworker/0:1/10:
[ 35.539457] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 35.541470] #1: ffff888008197da8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 35.543788] #2: ffff88800f8d9948 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.545591]
[ 35.545591] stack backtrace:
[ 35.546461] CPU: 0 PID: 10 Comm: kworker/0:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.547968] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.550178] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.551221] Call Trace:
[ 35.551716]
[ 35.552151] dump_stack_lvl+0x8b/0xb3
[ 35.552895] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 35.553921] ? kernfs_put.part.0+0x334/0x540
[ 35.554808] kfree+0xb3/0x5a0
[ 35.555419] ? kmem_cache_free+0xce/0x640
[ 35.556226] kernfs_put.part.0+0x334/0x540
[ 35.557061] kernfs_put+0x42/0x50
[ 35.557728] __kernfs_remove+0x7ce/0xb00
[ 35.558533] ? lock_is_held_type+0xd7/0x130
[ 35.559382] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 35.560406] ? down_write+0xde/0x150
[ 35.561129] ? down_write_killable_nested+0x180/0x180
[ 35.562158] kernfs_destroy_root+0x89/0xb0
[ 35.562985] css_free_rwork_fn+0xa28/0xf40
[ 35.563812] process_one_work+0xa30/0x1710
[ 35.564640] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.565553] ? rwlock_bug.part.0+0x90/0x90
[ 35.566390] ? _raw_spin_lock_irq+0x41/0x50
[ 35.567234] worker_thread+0x62a/0x13e0
[ 35.568017] ? process_one_work+0x1710/0x1710
[ 35.568890] kthread+0x40c/0x500
[ 35.569549] ? set_kthread_struct+0x130/0x130
[ 35.570426] ret_from_fork+0x22/0x30
[ 35.571159]
[ 35.571671] ==================================================================
[ 35.573083] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 35.574252] Read of size 8 at addr ffff88800f8d9940 by task kworker/0:1/10
[ 35.575591]
[ 35.575910] CPU: 0 PID: 10 Comm: kworker/0:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.577432] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.579661] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.580709] Call Trace:
[ 35.581213]
[ 35.581649] dump_stack_lvl+0x8b/0xb3
[ 35.582423] print_address_description.constprop.0+0x1f/0x180
[ 35.583577] ? up_write+0x3ac/0x460
[ 35.584294] ? up_write+0x3ac/0x460
[ 35.585010] kasan_report.cold+0x7f/0x11b
[ 35.585832] ? up_write+0x3ac/0x460
[ 35.586556] up_write+0x3ac/0x460
[ 35.587250] css_free_rwork_fn+0xa28/0xf40
[ 35.588099] process_one_work+0xa30/0x1710
[ 35.588947] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.589874] ? rwlock_bug.part.0+0x90/0x90
[ 35.590725] ? _raw_spin_lock_irq+0x41/0x50
[ 35.591588] worker_thread+0x62a/0x13e0
[ 35.592380] ? process_one_work+0x1710/0x1710
[ 35.593271] kthread+0x40c/0x500
[ 35.593938] ? set_kthread_struct+0x130/0x130
[ 35.594838] ret_from_fork+0x22/0x30
[ 35.595579]
[ 35.596037]
[ 35.596353] Allocated by task 281:
[ 35.597041] kasan_save_stack+0x1e/0x40
[ 35.597824] __kasan_kmalloc+0x81/0xa0
[ 35.598593] kernfs_create_root+0x4c/0x410
[ 35.599423] cgroup_setup_root+0x346/0xb60
[ 35.600259] cgroup1_get_tree+0xc1b/0x1370
[ 35.601097] vfs_get_tree+0x8e/0x2f0
[ 35.601831] path_mount+0x131b/0x1f80
[ 35.602766] __x64_sys_mount+0x27e/0x300
[ 35.603720] do_syscall_64+0x3b/0x90
[ 35.604585] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 35.605791]
[ 35.606207] Freed by task 10:
[ 35.606925] kasan_save_stack+0x1e/0x40
[ 35.607849] kasan_set_track+0x21/0x30
[ 35.608757] kasan_set_free_info+0x20/0x30
[ 35.609746] __kasan_slab_free+0x108/0x170
[ 35.610745] kfree+0xc5/0x5a0
[ 35.611470] kernfs_put.part.0+0x334/0x540
[ 35.612457] kernfs_put+0x42/0x50
[ 35.613259] __kernfs_remove+0x7ce/0xb00
[ 35.614209] kernfs_destroy_root+0x89/0xb0
[ 35.615187] css_free_rwork_fn+0xa28/0xf40
[ 35.616171] process_one_work+0xa30/0x1710
[ 35.617157] worker_thread+0x62a/0x13e0
[ 35.618080] kthread+0x40c/0x500
[ 35.618843] ret_from_fork+0x22/0x30
[ 35.619570]
[ 35.619890] The buggy address belongs to the object at ffff88800f8d9800
[ 35.619890] which belongs to the cache kmalloc-512 of size 512
[ 35.622346] The buggy address is located 320 bytes inside of
[ 35.622346] 512-byte region [ffff88800f8d9800, ffff88800f8d9a00)
[ 35.624639] The buggy address belongs to the page:
[ 35.625591] page:0000000003fe7696 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xf8d8
[ 35.627429] head:0000000003fe7696 order:2 compound_mapcount:0 compound_pincount:0
[ 35.628910] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 35.630067] raw: 0100000000010200 ffffea0000393500 dead000000000002 ffff888007841c80
[ 35.631612] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
[ 35.633134] page dumped because: kasan: bad access detected
[ 35.634213]
[ 35.634531] Memory state around the buggy address:
[ 35.635471] ffff88800f8d9800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.636873] ffff88800f8d9880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.638291] >ffff88800f8d9900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.639686] ^
[ 35.640733] ffff88800f8d9980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.642144] ffff88800f8d9a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 35.643542] ==================================================================
[ 35.672379] cgroup: Unknown subsys name 'hugetlb'
[ 35.673783] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:33:43 Registers:
info registers vcpu 0
RAX=000000000000002d RBX=00000000000003f8 RCX=0000000000000000 RDX=00000000000003f8
RSI=ffffffff823640e1 RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff888008197648
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=00007ffe94466000 CR3=000000000d722000 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 4108ff8000000000
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=00007f668c6e2fa0 CR3=000000000d722000 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 414c0f6a81a37b2f
YMM01=0000000000000000 0000000000000000 0000000000000000 3f847ae147ae147b
YMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM03=0000000000000000 0000000000000000 0000000000000000 3f73e655d729f6ee
YMM04=0000000000000000 0000000000000000 6174736e69206572 6120737265646165
YMM05=0000000000000000 0000000000000000 613c206564756c63 6e69230a64656c6c
YMM06=0000000000000000 0000000000000000 736e65202f2f203e 6d687469726f676c
YMM07=0000000000000000 0000000000000000 6568202b2b432074 6168742073657275
YMM08=0000000000000000 0000000000000000 736e692065726120 7372656461656820
YMM09=0000000000000000 0000000000000000 206564756c636e69 230a64656c6c6174
YMM10=0000000000000000 0000000000000000 65202f2f203e6d68 7469726f676c613c
YMM11=0000000000000000 0000000000000000 202b2b4320746168 742073657275736e
YMM12=0000000000000000 0000000000000000 74736e6920657261 2073726564616568
YMM13=0000000000000000 0000000000000000 29286e69616d2074 6e690a64656c6c61
YMM14=0000000000000000 0000000000000000 6f6c6c6548222866 746e697270207b20
YMM15=0000000000000000 0000000000000000 0a7d203b29226e5c 21646c726f57202c