Warning: Permanently added '[localhost]:29031' (ECDSA) to the list of known hosts.
2021/12/06 11:37:08 fuzzer started
2021/12/06 11:37:08 dialing manager at localhost:35719
2021/12/06 11:37:08 checking machine...
2021/12/06 11:37:08 checking revisions...
syzkaller login: [ 34.868314] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:37:08 testing simple program...
[ 34.904412] cgroup: Unknown subsys name 'net'
[ 34.905530] cgroup: Unknown subsys name 'net_prio'
[ 34.906921] cgroup: Unknown subsys name 'devices'
[ 34.908590] cgroup: Unknown subsys name 'blkio'
[ 34.927666]
[ 34.927877] =========================
[ 34.928334] WARNING: held lock freed!
[ 34.928817] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 34.929387] -------------------------
[ 34.929786] kworker/0:1/10 is freeing memory ffff88800d48cc00-ffff88800d48cdff, with a lock still held there!
[ 34.930934] ffff88800d48cd48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 34.932136] 3 locks held by kworker/0:1/10:
[ 34.932601] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 34.934296] #1: ffff888008197da8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 34.935611] #2: ffff88800d48cd48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 34.936677]
[ 34.936677] stack backtrace:
[ 34.937181] CPU: 0 PID: 10 Comm: kworker/0:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 34.938010] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 34.939365] Workqueue: cgroup_destroy css_free_rwork_fn
[ 34.940120] Call Trace:
[ 34.940471]
[ 34.940713] dump_stack_lvl+0x8b/0xb3
[ 34.941123] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 34.941683] ? kernfs_put.part.0+0x334/0x540
[ 34.942168] kfree+0xb3/0x5a0
[ 34.942510] ? kmem_cache_free+0xce/0x640
[ 34.942945] kernfs_put.part.0+0x334/0x540
[ 34.943390] kernfs_put+0x42/0x50
[ 34.943753] __kernfs_remove+0x7ce/0xb00
[ 34.944186] ? lock_is_held_type+0xd7/0x130
[ 34.944711] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 34.945310] ? down_write+0xde/0x150
[ 34.945699] ? down_write_killable_nested+0x180/0x180
[ 34.946227] kernfs_destroy_root+0x89/0xb0
[ 34.946714] css_free_rwork_fn+0xa28/0xf40
[ 34.947210] process_one_work+0xa30/0x1710
[ 34.947657] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 34.948144] ? rwlock_bug.part.0+0x90/0x90
[ 34.948593] ? _raw_spin_lock_irq+0x41/0x50
[ 34.949051] worker_thread+0x62a/0x13e0
[ 34.949502] ? process_one_work+0x1710/0x1710
[ 34.950121] kthread+0x40c/0x500
[ 34.950512] ? set_kthread_struct+0x130/0x130
[ 34.950983] ret_from_fork+0x22/0x30
[ 34.951374]
[ 34.951745] ==================================================================
[ 34.952488] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 34.953110] Read of size 8 at addr ffff88800d48cd40 by task kworker/0:1/10
[ 34.953832]
[ 34.954003] CPU: 0 PID: 10 Comm: kworker/0:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 34.955028] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 34.956921] Workqueue: cgroup_destroy css_free_rwork_fn
[ 34.957995] Call Trace:
[ 34.958498]
[ 34.958948] dump_stack_lvl+0x8b/0xb3
[ 34.959615] print_address_description.constprop.0+0x1f/0x180
[ 34.960563] ? up_write+0x3ac/0x460
[ 34.961136] ? up_write+0x3ac/0x460
[ 34.961700] kasan_report.cold+0x7f/0x11b
[ 34.962390] ? up_write+0x3ac/0x460
[ 34.962958] up_write+0x3ac/0x460
[ 34.963366] css_free_rwork_fn+0xa28/0xf40
[ 34.963821] process_one_work+0xa30/0x1710
[ 34.964285] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 34.964784] ? rwlock_bug.part.0+0x90/0x90
[ 34.965242] ? _raw_spin_lock_irq+0x41/0x50
[ 34.965710] worker_thread+0x62a/0x13e0
[ 34.966141] ? process_one_work+0x1710/0x1710
[ 34.966688] kthread+0x40c/0x500
[ 34.967156] ? set_kthread_struct+0x130/0x130
[ 34.967662] ret_from_fork+0x22/0x30
[ 34.968073]
[ 34.968363]
[ 34.968584] Allocated by task 280:
[ 34.969042] kasan_save_stack+0x1e/0x40
[ 34.969506] __kasan_kmalloc+0x81/0xa0
[ 34.970034] kernfs_create_root+0x4c/0x410
[ 34.970637] cgroup_setup_root+0x346/0xb60
[ 34.971253] cgroup1_get_tree+0xc1b/0x1370
[ 34.971810] vfs_get_tree+0x8e/0x2f0
[ 34.972313] path_mount+0x131b/0x1f80
[ 34.972829] __x64_sys_mount+0x27e/0x300
[ 34.973380] do_syscall_64+0x3b/0x90
[ 34.973892] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 34.974624]
[ 34.974854] Freed by task 10:
[ 34.975285] kasan_save_stack+0x1e/0x40
[ 34.975832] kasan_set_track+0x21/0x30
[ 34.976384] kasan_set_free_info+0x20/0x30
[ 34.976973] __kasan_slab_free+0x108/0x170
[ 34.977559] kfree+0xc5/0x5a0
[ 34.977999] kernfs_put.part.0+0x334/0x540
[ 34.978602] kernfs_put+0x42/0x50
[ 34.979078] __kernfs_remove+0x7ce/0xb00
[ 34.979638] kernfs_destroy_root+0x89/0xb0
[ 34.980225] css_free_rwork_fn+0xa28/0xf40
[ 34.980814] process_one_work+0xa30/0x1710
[ 34.981403] worker_thread+0x62a/0x13e0
[ 34.981955] kthread+0x40c/0x500
[ 34.982482] ret_from_fork+0x22/0x30
[ 34.982988]
[ 34.983204] The buggy address belongs to the object at ffff88800d48cc00
[ 34.983204] which belongs to the cache kmalloc-512 of size 512
[ 34.984872] The buggy address is located 320 bytes inside of
[ 34.984872] 512-byte region [ffff88800d48cc00, ffff88800d48ce00)
[ 34.986451] The buggy address belongs to the page:
[ 34.987106] page:00000000ded53c59 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800d48c400 pfn:0xd48c
[ 34.988523] head:00000000ded53c59 order:2 compound_mapcount:0 compound_pincount:0
[ 34.989647] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 34.990441] raw: 0100000000010200 ffffea000038ed08 ffffea0000393d08 ffff888007841c80
[ 34.991526] raw: ffff88800d48c400 0000000000100009 00000001ffffffff 0000000000000000
[ 34.992596] page dumped because: kasan: bad access detected
[ 34.993378]
[ 34.993606] Memory state around the buggy address:
[ 34.994281] ffff88800d48cc00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.995317] ffff88800d48cc80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.996334] >ffff88800d48cd00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.997466] ^
[ 34.998212] ffff88800d48cd80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.999192] ffff88800d48ce00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 34.999972] ==================================================================
[ 35.034813] cgroup: Unknown subsys name 'hugetlb'
[ 35.038124] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:37:09 Registers:
info registers vcpu 0
RAX=dffffc0000000060 RBX=00000000000003fd RCX=0000000000000000 RDX=00000000000003fd
RSI=ffffffff8236405c RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff8880081975c8
R8 =0000000000000074 R9 =0000000000000020 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=00007ff48ef196d0 CR3=000000000c9bc000 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=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 0000000000000000 0000000000000000
YMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM03=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM04=0000000000000000 0000000000000000 ffffffffffffffff ffffffffffffffff
YMM05=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM06=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000
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=00005652fd2368e5 CR3=000000000dbf6000 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 ffffffffffffffff
YMM03=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM04=0000000000000000 0000000000000000 2f2f2f2f2f2f2f2f 2f2f2f2f2f2f2f2f
YMM05=0000000000000000 0000000000000000 6633353937322d35 3330382d63653934
YMM06=0000000000000000 0000000000000000 0000000000000000 6c6562616c636573
YMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM08=0000000000000000 0000000000000000 6665646362613938 3736353433323130
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