Warning: Permanently added '[localhost]:61789' (ECDSA) to the list of known hosts.
2021/12/06 11:32:13 fuzzer started
2021/12/06 11:32:14 dialing manager at localhost:35719
2021/12/06 11:32:14 checking machine...
2021/12/06 11:32:14 checking revisions...
syzkaller login: [ 36.365641] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:32:14 testing simple program...
[ 36.411285] cgroup: Unknown subsys name 'net'
[ 36.412816] cgroup: Unknown subsys name 'net_prio'
[ 36.415271] cgroup: Unknown subsys name 'devices'
[ 36.417149] cgroup: Unknown subsys name 'blkio'
[ 36.438138]
[ 36.438488] =========================
[ 36.439244] WARNING: held lock freed!
[ 36.439999] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 36.440970] -------------------------
[ 36.442417] kworker/1:2/82 is freeing memory ffff88800e383000-ffff88800e3831ff, with a lock still held there!
[ 36.444760] ffff88800e383148 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 36.446526] 3 locks held by kworker/1:2/82:
[ 36.447370] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 36.449401] #1: ffff88800f907da8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 36.451729] #2: ffff88800e383148 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 36.453531]
[ 36.453531] stack backtrace:
[ 36.454409] CPU: 1 PID: 82 Comm: kworker/1:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 36.455908] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 36.458137] Workqueue: cgroup_destroy css_free_rwork_fn
[ 36.459476] Call Trace:
[ 36.460098]
[ 36.460627] dump_stack_lvl+0x8b/0xb3
[ 36.461382] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 36.462521] ? kernfs_put.part.0+0x334/0x540
[ 36.463601] kfree+0xb3/0x5a0
[ 36.464217] ? kmem_cache_free+0xce/0x640
[ 36.465036] kernfs_put.part.0+0x334/0x540
[ 36.465907] kernfs_put+0x42/0x50
[ 36.466612] __kernfs_remove+0x7ce/0xb00
[ 36.467397] ? lock_is_held_type+0xd7/0x130
[ 36.468238] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 36.469257] ? down_write+0xde/0x150
[ 36.469985] ? down_write_killable_nested+0x180/0x180
[ 36.470983] kernfs_destroy_root+0x89/0xb0
[ 36.471807] css_free_rwork_fn+0xa28/0xf40
[ 36.472629] process_one_work+0xa30/0x1710
[ 36.473451] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 36.474377] ? rwlock_bug.part.0+0x90/0x90
[ 36.475202] ? _raw_spin_lock_irq+0x41/0x50
[ 36.476048] worker_thread+0x62a/0x13e0
[ 36.476825] ? process_one_work+0x1710/0x1710
[ 36.477693] kthread+0x40c/0x500
[ 36.478361] ? set_kthread_struct+0x130/0x130
[ 36.479227] ret_from_fork+0x22/0x30
[ 36.479986]
[ 36.480524] ==================================================================
[ 36.482015] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 36.483200] Read of size 8 at addr ffff88800e383140 by task kworker/1:2/82
[ 36.484586]
[ 36.484902] CPU: 1 PID: 82 Comm: kworker/1:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 36.486470] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 36.488741] Workqueue: cgroup_destroy css_free_rwork_fn
[ 36.489776] Call Trace:
[ 36.490290]
[ 36.490723] dump_stack_lvl+0x8b/0xb3
[ 36.491477] print_address_description.constprop.0+0x1f/0x180
[ 36.492600] ? up_write+0x3ac/0x460
[ 36.493314] ? up_write+0x3ac/0x460
[ 36.494052] kasan_report.cold+0x7f/0x11b
[ 36.494883] ? up_write+0x3ac/0x460
[ 36.495593] up_write+0x3ac/0x460
[ 36.496271] css_free_rwork_fn+0xa28/0xf40
[ 36.497096] process_one_work+0xa30/0x1710
[ 36.497938] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 36.498853] ? rwlock_bug.part.0+0x90/0x90
[ 36.499679] ? _raw_spin_lock_irq+0x41/0x50
[ 36.500522] worker_thread+0x62a/0x13e0
[ 36.501300] ? process_one_work+0x1710/0x1710
[ 36.502195] kthread+0x40c/0x500
[ 36.502858] ? set_kthread_struct+0x130/0x130
[ 36.503738] ret_from_fork+0x22/0x30
[ 36.504472]
[ 36.504919]
[ 36.505234] Allocated by task 281:
[ 36.505921] kasan_save_stack+0x1e/0x40
[ 36.506694] __kasan_kmalloc+0x81/0xa0
[ 36.507449] kernfs_create_root+0x4c/0x410
[ 36.508266] cgroup_setup_root+0x346/0xb60
[ 36.509094] cgroup1_get_tree+0xc1b/0x1370
[ 36.509928] vfs_get_tree+0x8e/0x2f0
[ 36.510656] path_mount+0x131b/0x1f80
[ 36.511395] __x64_sys_mount+0x27e/0x300
[ 36.512158] do_syscall_64+0x3b/0x90
[ 36.512870] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 36.513891]
[ 36.514205] Freed by task 82:
[ 36.514804] kasan_save_stack+0x1e/0x40
[ 36.515573] kasan_set_track+0x21/0x30
[ 36.516327] kasan_set_free_info+0x20/0x30
[ 36.517146] __kasan_slab_free+0x108/0x170
[ 36.517974] kfree+0xc5/0x5a0
[ 36.518585] kernfs_put.part.0+0x334/0x540
[ 36.519403] kernfs_put+0x42/0x50
[ 36.520074] __kernfs_remove+0x7ce/0xb00
[ 36.520854] kernfs_destroy_root+0x89/0xb0
[ 36.521667] css_free_rwork_fn+0xa28/0xf40
[ 36.522507] process_one_work+0xa30/0x1710
[ 36.523323] worker_thread+0x62a/0x13e0
[ 36.524092] kthread+0x40c/0x500
[ 36.524760] ret_from_fork+0x22/0x30
[ 36.525482]
[ 36.525802] The buggy address belongs to the object at ffff88800e383000
[ 36.525802] which belongs to the cache kmalloc-512 of size 512
[ 36.528192] The buggy address is located 320 bytes inside of
[ 36.528192] 512-byte region [ffff88800e383000, ffff88800e383200)
[ 36.530451] The buggy address belongs to the page:
[ 36.531389] page:00000000cca33047 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe380
[ 36.533174] head:00000000cca33047 order:2 compound_mapcount:0 compound_pincount:0
[ 36.534632] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 36.535770] raw: 0100000000010200 0000000000000000 dead000000000122 ffff888007841c80
[ 36.537265] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
[ 36.538770] page dumped because: kasan: bad access detected
[ 36.539852]
[ 36.540164] Memory state around the buggy address:
[ 36.541102] ffff88800e383000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.542505] ffff88800e383080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.543930] >ffff88800e383100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.545321] ^
[ 36.546370] ffff88800e383180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.547760] ffff88800e383200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 36.549147] ==================================================================
[ 36.578149] cgroup: Unknown subsys name 'hugetlb'
[ 36.579964] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:32:14 Registers:
info registers vcpu 0
RAX=ffffffff84078af0 RBX=ffffffff85032600 RCX=ffffffff8405abe1 RDX=ffffed100d9c7143
RSI=0000000000000001 RDI=ffffffff84078eaf RBP=0000000000000000 RSP=ffffffff85007e40
R8 =0000000000000000 R9 =ffff88806ce38a13 R10=ffffed100d9c7142 R11=0000000000000001
R12=fffffbfff0a064c0 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 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=00005629ec5edbca CR3=00000000170c8000 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=dffffc0000000060 RBX=00000000000003fd RCX=0000000000000000 RDX=00000000000003fd
RSI=ffffffff8236405c RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff88800f9075f0
R8 =0000000000000071 R9 =000000000000002f 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 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=00007f66a499f6d0 CR3=00000000170c8000 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 41495a12202cd24f
YMM01=0000000000000000 0000000000000000 0000000000000000 3f847ae147ae147b
YMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM03=0000000000000000 0000000000000000 0000000000000000 3f747d38f32ee8e9
YMM04=0000000000000000 0000000000000000 00000000005ec4e5 00000000005f5e10
YMM05=0000000000000000 0000000000000000 00000000005e8f39 00000000005ec397
YMM06=0000000000000000 0000000000000000 000000000089d9b9 00000000008a446f
YMM07=0000000000000000 0000000000000000 00000000004643c1 00000000004360f2
YMM08=0000000000000000 0000000000000000 000000c000084260 000000c000084250
YMM09=0000000000000000 0000000000000000 000000c0002fc560 000000c0002fc550
YMM10=0000000000000000 0000000000000000 000000c000084010 000000c000084000
YMM11=0000000000000000 0000000000000000 000000c000084480 000000c000084490
YMM12=0000000000000000 0000000000000000 000000c0000846e0 000000c0000846f0
YMM13=0000000000000000 0000000000000000 000000c000084100 000000c000084700
YMM14=0000000000000000 0000000000000000 000000c000084110 000000c000084140
YMM15=0000000000000000 0000000000000000 000000c000084130 000000c000084120