Warning: Permanently added '[localhost]:28164' (ECDSA) to the list of known hosts.
2021/12/06 11:39:08 fuzzer started
2021/12/06 11:39:08 dialing manager at localhost:35719
2021/12/06 11:39:09 checking machine...
2021/12/06 11:39:09 checking revisions...
syzkaller login: [ 35.078816] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:39:09 testing simple program...
[ 35.115078] cgroup: Unknown subsys name 'net'
[ 35.116183] cgroup: Unknown subsys name 'net_prio'
[ 35.118040] cgroup: Unknown subsys name 'devices'
[ 35.119946] cgroup: Unknown subsys name 'blkio'
[ 35.137667]
[ 35.137940] =========================
[ 35.138522] WARNING: held lock freed!
[ 35.139105] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 35.139894] -------------------------
[ 35.140636] kworker/0:2/48 is freeing memory ffff88800d49c400-ffff88800d49c5ff, with a lock still held there!
[ 35.142893] ffff88800d49c548 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.144274] 3 locks held by kworker/0:2/48:
[ 35.144966] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 35.146578] #1: ffff88800b677da8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 35.148424] #2: ffff88800d49c548 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.149881]
[ 35.149881] stack backtrace:
[ 35.150570] CPU: 0 PID: 48 Comm: kworker/0:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.151739] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.153473] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.154293] Call Trace:
[ 35.154676]
[ 35.155014] dump_stack_lvl+0x8b/0xb3
[ 35.155599] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 35.156404] ? kernfs_put.part.0+0x334/0x540
[ 35.157090] kfree+0xb3/0x5a0
[ 35.157566] ? kmem_cache_free+0xce/0x640
[ 35.158204] kernfs_put.part.0+0x334/0x540
[ 35.158854] kernfs_put+0x42/0x50
[ 35.159369] __kernfs_remove+0x7ce/0xb00
[ 35.159999] ? lock_is_held_type+0xd7/0x130
[ 35.160688] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 35.161510] ? down_write+0xde/0x150
[ 35.162079] ? down_write_killable_nested+0x180/0x180
[ 35.162887] kernfs_destroy_root+0x89/0xb0
[ 35.163549] css_free_rwork_fn+0xa28/0xf40
[ 35.164225] process_one_work+0xa30/0x1710
[ 35.164898] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.165625] ? rwlock_bug.part.0+0x90/0x90
[ 35.166297] ? _raw_spin_lock_irq+0x41/0x50
[ 35.166974] worker_thread+0x62a/0x13e0
[ 35.167589] ? process_one_work+0x1710/0x1710
[ 35.168306] kthread+0x40c/0x500
[ 35.168843] ? set_kthread_struct+0x130/0x130
[ 35.169560] ret_from_fork+0x22/0x30
[ 35.170150]
[ 35.170621] ==================================================================
[ 35.171748] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 35.172684] Read of size 8 at addr ffff88800d49c540 by task kworker/0:2/48
[ 35.173749]
[ 35.173997] CPU: 0 PID: 48 Comm: kworker/0:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.175204] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.177002] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.177836] Call Trace:
[ 35.178239]
[ 35.178588] dump_stack_lvl+0x8b/0xb3
[ 35.179182] print_address_description.constprop.0+0x1f/0x180
[ 35.180088] ? up_write+0x3ac/0x460
[ 35.180673] ? up_write+0x3ac/0x460
[ 35.181225] kasan_report.cold+0x7f/0x11b
[ 35.181887] ? up_write+0x3ac/0x460
[ 35.182466] up_write+0x3ac/0x460
[ 35.183027] css_free_rwork_fn+0xa28/0xf40
[ 35.183694] process_one_work+0xa30/0x1710
[ 35.184351] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.185087] ? rwlock_bug.part.0+0x90/0x90
[ 35.185747] ? _raw_spin_lock_irq+0x41/0x50
[ 35.186430] worker_thread+0x62a/0x13e0
[ 35.187063] ? process_one_work+0x1710/0x1710
[ 35.187764] kthread+0x40c/0x500
[ 35.188302] ? set_kthread_struct+0x130/0x130
[ 35.189013] ret_from_fork+0x22/0x30
[ 35.189590]
[ 35.189950]
[ 35.190209] Allocated by task 283:
[ 35.190749] kasan_save_stack+0x1e/0x40
[ 35.191371] __kasan_kmalloc+0x81/0xa0
[ 35.191979] kernfs_create_root+0x4c/0x410
[ 35.192656] cgroup_setup_root+0x346/0xb60
[ 35.193326] cgroup1_get_tree+0xc1b/0x1370
[ 35.193987] vfs_get_tree+0x8e/0x2f0
[ 35.194563] path_mount+0x131b/0x1f80
[ 35.195160] __x64_sys_mount+0x27e/0x300
[ 35.195793] do_syscall_64+0x3b/0x90
[ 35.196381] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 35.197213]
[ 35.197466] Freed by task 48:
[ 35.197944] kasan_save_stack+0x1e/0x40
[ 35.198558] kasan_set_track+0x21/0x30
[ 35.199180] kasan_set_free_info+0x20/0x30
[ 35.199847] __kasan_slab_free+0x108/0x170
[ 35.200505] kfree+0xc5/0x5a0
[ 35.201000] kernfs_put.part.0+0x334/0x540
[ 35.201657] kernfs_put+0x42/0x50
[ 35.202206] __kernfs_remove+0x7ce/0xb00
[ 35.202851] kernfs_destroy_root+0x89/0xb0
[ 35.203515] css_free_rwork_fn+0xa28/0xf40
[ 35.204169] process_one_work+0xa30/0x1710
[ 35.204831] worker_thread+0x62a/0x13e0
[ 35.205436] kthread+0x40c/0x500
[ 35.205971] ret_from_fork+0x22/0x30
[ 35.206558]
[ 35.206810] Last potentially related work creation:
[ 35.207553] kasan_save_stack+0x1e/0x40
[ 35.208169] __kasan_record_aux_stack+0x97/0xa0
[ 35.208904] insert_work+0x44/0x2b0
[ 35.209476] __queue_work+0x61f/0x10a0
[ 35.210092] rcu_work_rcufn+0x58/0x80
[ 35.210671] rcu_core+0x7e9/0x1ce0
[ 35.211236] __do_softirq+0x270/0x8c7
[ 35.211822]
[ 35.212080] Second to last potentially related work creation:
[ 35.212995] kasan_save_stack+0x1e/0x40
[ 35.213605] __kasan_record_aux_stack+0x97/0xa0
[ 35.214315] call_rcu+0x82/0xa30
[ 35.214837] queue_rcu_work+0x82/0xa0
[ 35.215427] process_one_work+0xa30/0x1710
[ 35.216084] worker_thread+0x62a/0x13e0
[ 35.216723] kthread+0x40c/0x500
[ 35.217261] ret_from_fork+0x22/0x30
[ 35.217872]
[ 35.218120] The buggy address belongs to the object at ffff88800d49c400
[ 35.218120] which belongs to the cache kmalloc-512 of size 512
[ 35.220055] The buggy address is located 320 bytes inside of
[ 35.220055] 512-byte region [ffff88800d49c400, ffff88800d49c600)
[ 35.222737] The buggy address belongs to the page:
[ 35.223885] page:000000009497b19c refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xd49c
[ 35.226086] head:000000009497b19c order:2 compound_mapcount:0 compound_pincount:0
[ 35.227844] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 35.229233] raw: 0100000000010200 0000000000000000 dead000000000001 ffff888007841c80
[ 35.231060] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
[ 35.232884] page dumped because: kasan: bad access detected
[ 35.234202]
[ 35.234581] Memory state around the buggy address:
[ 35.235719] ffff88800d49c400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.237396] ffff88800d49c480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.238848] >ffff88800d49c500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.240305] ^
[ 35.241391] ffff88800d49c580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.242844] ffff88800d49c600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 35.244252] ==================================================================
[ 35.297088] cgroup: Unknown subsys name 'hugetlb'
[ 35.298538] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:39:09 Registers:
info registers vcpu 0
RAX=0000000000000034 RBX=00000000000003f8 RCX=0000000000000000 RDX=00000000000003f8
RSI=ffffffff823640e1 RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff88800b677648
R8 =0000000000000000 R9 =0000000000000034 R10=ffffffff82365d23 R11=000000000000000a
R12=0000000000000034 R13=0000000000000034 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=00007f0a1f135000 CR3=000000001ac1e000 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=0000000000000000 RBX=0000000000000000 RCX=0000000000000000 RDX=ffff8880081a9ac0
RSI=0000000000000000 RDI=0000000000000003 RBP=0000000000000000 RSP=ffff888008207da0
R8 =0000000000000000 R9 =ffffffff858bd8d7 R10=ffffffff8149e716 R11=0000000000000001
R12=0000000000000000 R13=0000000000000000 R14=0000000000000000 R15=0000000000000000
RIP=ffffffff814318be RFL=00000046 [---Z-P-] 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=00005555612a9000 CR3=000000001da7c000 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 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