Warning: Permanently added '[localhost]:35568' (ECDSA) to the list of known hosts.
2021/12/06 11:37:54 fuzzer started
2021/12/06 11:37:54 dialing manager at localhost:35719
2021/12/06 11:37:54 checking machine...
2021/12/06 11:37:54 checking revisions...
syzkaller login: [ 34.409424] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:37:54 testing simple program...
[ 34.458172] cgroup: Unknown subsys name 'net'
[ 34.459714] cgroup: Unknown subsys name 'net_prio'
[ 34.461496] cgroup: Unknown subsys name 'devices'
[ 34.462965] cgroup: Unknown subsys name 'blkio'
[ 34.479493]
[ 34.479840] =========================
[ 34.480594] WARNING: held lock freed!
[ 34.481364] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 34.482686] -------------------------
[ 34.484045] kworker/0:3/83 is freeing memory ffff88800e1ddc00-ffff88800e1dddff, with a lock still held there!
[ 34.486771] ffff88800e1ddd48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 34.488838] 3 locks held by kworker/0:3/83:
[ 34.489673] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 34.491660] #1: ffff88800fb17da8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 34.493958] #2: ffff88800e1ddd48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 34.495754]
[ 34.495754] stack backtrace:
[ 34.496601] CPU: 0 PID: 83 Comm: kworker/0:3 Not tainted 5.16.0-rc3-next-20211203 #1
[ 34.498108] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 34.500284] Workqueue: cgroup_destroy css_free_rwork_fn
[ 34.501345] Call Trace:
[ 34.501836]
[ 34.502266] dump_stack_lvl+0x8b/0xb3
[ 34.503001] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 34.504015] ? kernfs_put.part.0+0x334/0x540
[ 34.504861] kfree+0xb3/0x5a0
[ 34.505476] ? kmem_cache_free+0xce/0x640
[ 34.506278] kernfs_put.part.0+0x334/0x540
[ 34.507105] kernfs_put+0x42/0x50
[ 34.507775] __kernfs_remove+0x7ce/0xb00
[ 34.508560] ? lock_is_held_type+0xd7/0x130
[ 34.509424] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 34.510444] ? down_write+0xde/0x150
[ 34.511162] ? down_write_killable_nested+0x180/0x180
[ 34.512159] kernfs_destroy_root+0x89/0xb0
[ 34.512975] css_free_rwork_fn+0xa28/0xf40
[ 34.513810] process_one_work+0xa30/0x1710
[ 34.514638] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 34.515538] ? rwlock_bug.part.0+0x90/0x90
[ 34.516352] ? _raw_spin_lock_irq+0x41/0x50
[ 34.517194] worker_thread+0x62a/0x13e0
[ 34.517962] ? process_one_work+0x1710/0x1710
[ 34.518826] kthread+0x40c/0x500
[ 34.519477] ? set_kthread_struct+0x130/0x130
[ 34.520338] ret_from_fork+0x22/0x30
[ 34.521079]
[ 34.521589] ==================================================================
[ 34.522980] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 34.524116] Read of size 8 at addr ffff88800e1ddd40 by task kworker/0:3/83
[ 34.525457]
[ 34.525770] CPU: 0 PID: 83 Comm: kworker/0:3 Not tainted 5.16.0-rc3-next-20211203 #1
[ 34.527275] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 34.529475] Workqueue: cgroup_destroy css_free_rwork_fn
[ 34.530504] Call Trace:
[ 34.530998]
[ 34.531427] dump_stack_lvl+0x8b/0xb3
[ 34.532163] print_address_description.constprop.0+0x1f/0x180
[ 34.533303] ? up_write+0x3ac/0x460
[ 34.534003] ? up_write+0x3ac/0x460
[ 34.534700] kasan_report.cold+0x7f/0x11b
[ 34.535504] ? up_write+0x3ac/0x460
[ 34.536212] up_write+0x3ac/0x460
[ 34.536889] css_free_rwork_fn+0xa28/0xf40
[ 34.537729] process_one_work+0xa30/0x1710
[ 34.538557] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 34.539466] ? rwlock_bug.part.0+0x90/0x90
[ 34.540289] ? _raw_spin_lock_irq+0x41/0x50
[ 34.541144] worker_thread+0x62a/0x13e0
[ 34.541919] ? process_one_work+0x1710/0x1710
[ 34.542784] kthread+0x40c/0x500
[ 34.543436] ? set_kthread_struct+0x130/0x130
[ 34.544298] ret_from_fork+0x22/0x30
[ 34.545031]
[ 34.545475]
[ 34.545791] Allocated by task 282:
[ 34.546463] kasan_save_stack+0x1e/0x40
[ 34.547227] __kasan_kmalloc+0x81/0xa0
[ 34.547975] kernfs_create_root+0x4c/0x410
[ 34.548802] cgroup_setup_root+0x346/0xb60
[ 34.549645] cgroup1_get_tree+0xc1b/0x1370
[ 34.550470] vfs_get_tree+0x8e/0x2f0
[ 34.551194] path_mount+0x131b/0x1f80
[ 34.551938] __x64_sys_mount+0x27e/0x300
[ 34.552725] do_syscall_64+0x3b/0x90
[ 34.553455] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 34.554454]
[ 34.554767] Freed by task 83:
[ 34.555361] kasan_save_stack+0x1e/0x40
[ 34.556130] kasan_set_track+0x21/0x30
[ 34.556882] kasan_set_free_info+0x20/0x30
[ 34.557725] __kasan_slab_free+0x108/0x170
[ 34.558541] kfree+0xc5/0x5a0
[ 34.559138] kernfs_put.part.0+0x334/0x540
[ 34.559952] kernfs_put+0x42/0x50
[ 34.560618] __kernfs_remove+0x7ce/0xb00
[ 34.561406] kernfs_destroy_root+0x89/0xb0
[ 34.562215] css_free_rwork_fn+0xa28/0xf40
[ 34.563029] process_one_work+0xa30/0x1710
[ 34.563848] worker_thread+0x62a/0x13e0
[ 34.564610] kthread+0x40c/0x500
[ 34.565280] ret_from_fork+0x22/0x30
[ 34.565995]
[ 34.566306] The buggy address belongs to the object at ffff88800e1ddc00
[ 34.566306] which belongs to the cache kmalloc-512 of size 512
[ 34.568684] The buggy address is located 320 bytes inside of
[ 34.568684] 512-byte region [ffff88800e1ddc00, ffff88800e1dde00)
[ 34.570923] The buggy address belongs to the page:
[ 34.571855] page:0000000048bfb1ad refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe1dc
[ 34.573650] head:0000000048bfb1ad order:2 compound_mapcount:0 compound_pincount:0
[ 34.575085] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 34.576212] raw: 0100000000010200 0000000000000000 dead000000000001 ffff888007841c80
[ 34.577719] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
[ 34.579204] page dumped because: kasan: bad access detected
[ 34.580276]
[ 34.580587] Memory state around the buggy address:
[ 34.581526] ffff88800e1ddc00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.582909] ffff88800e1ddc80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.584293] >ffff88800e1ddd00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.585682] ^
[ 34.586710] ffff88800e1ddd80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.588093] ffff88800e1dde00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 34.589498] ==================================================================
[ 34.619028] cgroup: Unknown subsys name 'hugetlb'
[ 34.620254] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:37:55 Registers:
info registers vcpu 0
RAX=dffffc0000000060 RBX=00000000000003fd RCX=0000000000000000 RDX=00000000000003fd
RSI=ffffffff8236405c RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff88800fb175f0
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=000000c00075a000 CR3=000000001b062000 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 692b202c6c6f7274 6e6f635f65657274
YMM02=0000000000000000 0000000000000000 202c6c6f72746e6f 635f656572746275
YMM03=0000000000000000 0000000000000000 0a3232203a64656c 69616620296f692b
YMM04=0000000000000000 0000000000000000 00007f940c264d00 0000000000415710
YMM05=0000000000000000 0000000000000000 0000000000b12758 000000c0000aeba8
YMM06=0000000000000000 0000000000000000 0000000000505007 000000c00002dfc0
YMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM08=0000000000000000 0000000000000000 00000000004643c6 0000000000000000
YMM09=0000000000000000 0000000000000000 00000000004643c1 0000000000000000
YMM10=0000000000000000 0000000000000000 000000c00000c5a0 000000c000158b00
YMM11=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM12=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM13=0000000000000000 0000000000000000 000000c00000e8c0 000000c00018ec00
YMM14=0000000000000000 0000000000000000 000000c00000e8d0 000000c00018ec80
YMM15=0000000000000000 0000000000000000 000000c00000e8e8 000000c00018ed80
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=00007f4e0f617ac0 CR3=000000000fbd0000 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 0000000000000000 0000000000000000
YMM01=0000000000000000 0000000000000000 7465677261742e79 636e656772656d65
YMM02=0000000000000000 0000000000000000 ffffffffffffffff 0f0e0d0c0b0a0908
YMM03=0000000000000000 0000000000000000 0000000000000073 66626c7465677568
YMM04=0000000000000000 0000000000000000 2e2e2e2e2e2e2e2e 2e2e2e2e2e2e2e2e
YMM05=0000000000000000 0000000000000000 69642f7665642f20 31303030304d515f
YMM06=0000000000000000 0000000000000000 0000000000000000 6c6562616c636573
YMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM08=0000000000000000 0000000000000000 6564636261393837 3635343332313040
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