Warning: Permanently added '[localhost]:61453' (ECDSA) to the list of known hosts.
2021/12/06 11:29:55 fuzzer started
2021/12/06 11:29:55 dialing manager at localhost:35719
2021/12/06 11:29:55 checking machine...
2021/12/06 11:29:55 checking revisions...
syzkaller login: [ 36.784979] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:29:56 testing simple program...
[ 36.826769] cgroup: Unknown subsys name 'net'
[ 36.829580] cgroup: Unknown subsys name 'net_prio'
[ 36.831581] cgroup: Unknown subsys name 'devices'
[ 36.834072] cgroup: Unknown subsys name 'blkio'
[ 36.853499]
[ 36.853874] =========================
[ 36.854647] WARNING: held lock freed!
[ 36.855423] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 36.856649] -------------------------
[ 36.857853] kworker/1:1/31 is freeing memory ffff888017a24c00-ffff888017a24dff, with a lock still held there!
[ 36.860341] ffff888017a24d48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 36.862210] 3 locks held by kworker/1:1/31:
[ 36.863112] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 36.865305] #1: ffff888009aa7da8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 36.867810] #2: ffff888017a24d48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 36.869769]
[ 36.869769] stack backtrace:
[ 36.870689] CPU: 1 PID: 31 Comm: kworker/1:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 36.872292] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 36.874699] Workqueue: cgroup_destroy css_free_rwork_fn
[ 36.875851] Call Trace:
[ 36.876400]
[ 36.876862] dump_stack_lvl+0x8b/0xb3
[ 36.877666] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 36.878783] ? kernfs_put.part.0+0x334/0x540
[ 36.879728] kfree+0xb3/0x5a0
[ 36.880390] ? kmem_cache_free+0xce/0x640
[ 36.881262] kernfs_put.part.0+0x334/0x540
[ 36.882136] kernfs_put+0x42/0x50
[ 36.882842] __kernfs_remove+0x7ce/0xb00
[ 36.883684] ? lock_is_held_type+0xd7/0x130
[ 36.884595] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 36.885697] ? down_write+0xde/0x150
[ 36.886469] ? down_write_killable_nested+0x180/0x180
[ 36.887557] kernfs_destroy_root+0x89/0xb0
[ 36.888473] css_free_rwork_fn+0xa28/0xf40
[ 36.889357] process_one_work+0xa30/0x1710
[ 36.890247] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 36.891236] ? rwlock_bug.part.0+0x90/0x90
[ 36.892086] ? _raw_spin_lock_irq+0x41/0x50
[ 36.892998] worker_thread+0x62a/0x13e0
[ 36.893849] ? process_one_work+0x1710/0x1710
[ 36.894801] kthread+0x40c/0x500
[ 36.895518] ? set_kthread_struct+0x130/0x130
[ 36.896477] ret_from_fork+0x22/0x30
[ 36.897283]
[ 36.897863] ==================================================================
[ 36.899396] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 36.900676] Read of size 8 at addr ffff888017a24d40 by task kworker/1:1/31
[ 36.902131]
[ 36.902463] CPU: 1 PID: 31 Comm: kworker/1:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 36.904065] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 36.906460] Workqueue: cgroup_destroy css_free_rwork_fn
[ 36.907582] Call Trace:
[ 36.908134]
[ 36.908597] dump_stack_lvl+0x8b/0xb3
[ 36.909395] print_address_description.constprop.0+0x1f/0x180
[ 36.910623] ? up_write+0x3ac/0x460
[ 36.911381] ? up_write+0x3ac/0x460
[ 36.912147] kasan_report.cold+0x7f/0x11b
[ 36.913017] ? up_write+0x3ac/0x460
[ 36.913781] up_write+0x3ac/0x460
[ 36.914523] css_free_rwork_fn+0xa28/0xf40
[ 36.915436] process_one_work+0xa30/0x1710
[ 36.916349] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 36.917348] ? rwlock_bug.part.0+0x90/0x90
[ 36.918255] ? _raw_spin_lock_irq+0x41/0x50
[ 36.919184] worker_thread+0x62a/0x13e0
[ 36.920057] ? process_one_work+0x1710/0x1710
[ 36.921021] kthread+0x40c/0x500
[ 36.921738] ? set_kthread_struct+0x130/0x130
[ 36.922684] ret_from_fork+0x22/0x30
[ 36.923483]
[ 36.923982]
[ 36.924327] Allocated by task 283:
[ 36.925066] kasan_save_stack+0x1e/0x40
[ 36.925907] __kasan_kmalloc+0x81/0xa0
[ 36.926711] kernfs_create_root+0x4c/0x410
[ 36.927598] cgroup_setup_root+0x346/0xb60
[ 36.928499] cgroup1_get_tree+0xc1b/0x1370
[ 36.929386] vfs_get_tree+0x8e/0x2f0
[ 36.930152] path_mount+0x131b/0x1f80
[ 36.930947] __x64_sys_mount+0x27e/0x300
[ 36.931789] do_syscall_64+0x3b/0x90
[ 36.932552] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 36.933634]
[ 36.933979] Freed by task 31:
[ 36.934621] kasan_save_stack+0x1e/0x40
[ 36.935458] kasan_set_track+0x21/0x30
[ 36.936285] kasan_set_free_info+0x20/0x30
[ 36.937173] __kasan_slab_free+0x108/0x170
[ 36.938058] kfree+0xc5/0x5a0
[ 36.938710] kernfs_put.part.0+0x334/0x540
[ 36.939595] kernfs_put+0x42/0x50
[ 36.940337] __kernfs_remove+0x7ce/0xb00
[ 36.941189] kernfs_destroy_root+0x89/0xb0
[ 36.942073] css_free_rwork_fn+0xa28/0xf40
[ 36.942956] process_one_work+0xa30/0x1710
[ 36.943851] worker_thread+0x62a/0x13e0
[ 36.944691] kthread+0x40c/0x500
[ 36.945404] ret_from_fork+0x22/0x30
[ 36.946184]
[ 36.946523] The buggy address belongs to the object at ffff888017a24c00
[ 36.946523] which belongs to the cache kmalloc-512 of size 512
[ 36.949127] The buggy address is located 320 bytes inside of
[ 36.949127] 512-byte region [ffff888017a24c00, ffff888017a24e00)
[ 36.951534] The buggy address belongs to the page:
[ 36.952557] page:00000000760b7dd3 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x17a24
[ 36.954852] head:00000000760b7dd3 order:2 compound_mapcount:0 compound_pincount:0
[ 36.956924] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 36.958547] raw: 0100000000010200 0000000000000000 dead000000000122 ffff888007841c80
[ 36.960665] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
[ 36.962298] page dumped because: kasan: bad access detected
[ 36.963499]
[ 36.963864] Memory state around the buggy address:
[ 36.965136] ffff888017a24c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.967118] ffff888017a24c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.969127] >ffff888017a24d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.970963] ^
[ 36.972122] ffff888017a24d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.973655] ffff888017a24e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 36.975254] ==================================================================
[ 37.016162] cgroup: Unknown subsys name 'hugetlb'
[ 37.022826] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:29:56 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=000055dbe06bdd60 CR3=000000000ecb6000 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=0000000000000077 RBX=00000000000003f8 RCX=0000000000000000 RDX=00000000000003f8
RSI=ffffffff823640e1 RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff888009aa7648
R8 =0000000000000000 R9 =0000000000000077 R10=ffffffff82365d23 R11=000000000000000a
R12=0000000000000077 R13=0000000000000077 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 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=00007f8469062d50 CR3=000000000ecb6000 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 4153802b8af498e2
YMM01=0000000000000000 0000000000000000 0000000000000000 3f847ae147ae147b
YMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM03=0000000000000000 0000000000000000 0000000000000000 3f742bb6d317a9e7
YMM04=0000000000000000 0000000000000000 00007ff1bc1bc400 0000000000415710
YMM05=0000000000000000 0000000000000000 0000000000b12758 000000c00000e790
YMM06=0000000000000000 0000000000000000 0000000000505007 000000c00002a7c0
YMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM08=0000000000000000 0000000000000000 00000000004643c6 0000000000000000
YMM09=0000000000000000 0000000000000000 00000000004643c1 0000000000000000
YMM10=0000000000000000 0000000000000000 000000c00000d360 000000c00018ac60
YMM11=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM12=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM13=0000000000000000 0000000000000000 000000c0002c86f0 000000c0002ec000
YMM14=0000000000000000 0000000000000000 000000c0002c8ba0 000000c000054150
YMM15=0000000000000000 0000000000000000 000000c00006e900 000000c0002c8bd0