Warning: Permanently added '[localhost]:62676' (ECDSA) to the list of known hosts.
2021/12/06 11:26:13 fuzzer started
2021/12/06 11:26:13 dialing manager at localhost:35719
2021/12/06 11:26:13 checking machine...
2021/12/06 11:26:13 checking revisions...
syzkaller login: [ 35.132109] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:26:13 testing simple program...
[ 35.170900] cgroup: Unknown subsys name 'net'
[ 35.172966] cgroup: Unknown subsys name 'net_prio'
[ 35.174516] cgroup: Unknown subsys name 'devices'
[ 35.176873] cgroup: Unknown subsys name 'blkio'
[ 35.202039]
[ 35.202424] =========================
[ 35.203202] WARNING: held lock freed!
[ 35.204004] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 35.205189] -------------------------
[ 35.206428] kworker/0:2/48 is freeing memory ffff88801ae54400-ffff88801ae545ff, with a lock still held there!
[ 35.208862] ffff88801ae54548 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.210747] 3 locks held by kworker/0:2/48:
[ 35.211652] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 35.213773] #1: ffff88800b66fda8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 35.216212] #2: ffff88801ae54548 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.218100]
[ 35.218100] stack backtrace:
[ 35.219002] CPU: 0 PID: 48 Comm: kworker/0:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.220566] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.222903] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.224029] Call Trace:
[ 35.224560]
[ 35.225021] dump_stack_lvl+0x8b/0xb3
[ 35.225827] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 35.226920] ? kernfs_put.part.0+0x334/0x540
[ 35.227847] kfree+0xb3/0x5a0
[ 35.228494] ? kmem_cache_free+0xce/0x640
[ 35.229381] kernfs_put.part.0+0x334/0x540
[ 35.230291] kernfs_put+0x42/0x50
[ 35.231013] __kernfs_remove+0x7ce/0xb00
[ 35.231835] ? lock_is_held_type+0xd7/0x130
[ 35.232714] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 35.233785] ? down_write+0xde/0x150
[ 35.234551] ? down_write_killable_nested+0x180/0x180
[ 35.235610] kernfs_destroy_root+0x89/0xb0
[ 35.236494] css_free_rwork_fn+0xa28/0xf40
[ 35.237382] process_one_work+0xa30/0x1710
[ 35.238251] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.239187] ? rwlock_bug.part.0+0x90/0x90
[ 35.240044] ? _raw_spin_lock_irq+0x41/0x50
[ 35.240977] worker_thread+0x62a/0x13e0
[ 35.241808] ? process_one_work+0x1710/0x1710
[ 35.242750] kthread+0x40c/0x500
[ 35.243438] ? set_kthread_struct+0x130/0x130
[ 35.244347] ret_from_fork+0x22/0x30
[ 35.245114]
[ 35.245744] ==================================================================
[ 35.247215] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 35.248420] Read of size 8 at addr ffff88801ae54540 by task kworker/0:2/48
[ 35.249867]
[ 35.250199] CPU: 0 PID: 48 Comm: kworker/0:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.251766] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.254109] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.255194] Call Trace:
[ 35.255740]
[ 35.256193] dump_stack_lvl+0x8b/0xb3
[ 35.256966] print_address_description.constprop.0+0x1f/0x180
[ 35.258191] ? up_write+0x3ac/0x460
[ 35.258926] ? up_write+0x3ac/0x460
[ 35.259671] kasan_report.cold+0x7f/0x11b
[ 35.260516] ? up_write+0x3ac/0x460
[ 35.261274] up_write+0x3ac/0x460
[ 35.261998] css_free_rwork_fn+0xa28/0xf40
[ 35.262866] process_one_work+0xa30/0x1710
[ 35.263735] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.264683] ? rwlock_bug.part.0+0x90/0x90
[ 35.265602] ? _raw_spin_lock_irq+0x41/0x50
[ 35.266501] worker_thread+0x62a/0x13e0
[ 35.267344] ? process_one_work+0x1710/0x1710
[ 35.268270] kthread+0x40c/0x500
[ 35.268955] ? set_kthread_struct+0x130/0x130
[ 35.269876] ret_from_fork+0x22/0x30
[ 35.270639]
[ 35.271105]
[ 35.271434] Allocated by task 281:
[ 35.272142] kasan_save_stack+0x1e/0x40
[ 35.272966] __kasan_kmalloc+0x81/0xa0
[ 35.273817] kernfs_create_root+0x4c/0x410
[ 35.274723] cgroup_setup_root+0x346/0xb60
[ 35.275623] cgroup1_get_tree+0xc1b/0x1370
[ 35.276519] vfs_get_tree+0x8e/0x2f0
[ 35.277337] path_mount+0x131b/0x1f80
[ 35.278153] __x64_sys_mount+0x27e/0x300
[ 35.279054] do_syscall_64+0x3b/0x90
[ 35.279847] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 35.280947]
[ 35.281301] Freed by task 48:
[ 35.281941] kasan_save_stack+0x1e/0x40
[ 35.282772] kasan_set_track+0x21/0x30
[ 35.283583] kasan_set_free_info+0x20/0x30
[ 35.284468] __kasan_slab_free+0x108/0x170
[ 35.285375] kfree+0xc5/0x5a0
[ 35.286046] kernfs_put.part.0+0x334/0x540
[ 35.286956] kernfs_put+0x42/0x50
[ 35.287683] __kernfs_remove+0x7ce/0xb00
[ 35.288532] kernfs_destroy_root+0x89/0xb0
[ 35.289442] css_free_rwork_fn+0xa28/0xf40
[ 35.290332] process_one_work+0xa30/0x1710
[ 35.291261] worker_thread+0x62a/0x13e0
[ 35.292108] kthread+0x40c/0x500
[ 35.292830] ret_from_fork+0x22/0x30
[ 35.293616]
[ 35.293956] The buggy address belongs to the object at ffff88801ae54400
[ 35.293956] which belongs to the cache kmalloc-512 of size 512
[ 35.296544] The buggy address is located 320 bytes inside of
[ 35.296544] 512-byte region [ffff88801ae54400, ffff88801ae54600)
[ 35.299072] The buggy address belongs to the page:
[ 35.300112] page:00000000715225d9 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1ae54
[ 35.302062] head:00000000715225d9 order:2 compound_mapcount:0 compound_pincount:0
[ 35.303584] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 35.304780] raw: 0100000000010200 dead000000000100 dead000000000122 ffff888007841c80
[ 35.306377] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
[ 35.307954] page dumped because: kasan: bad access detected
[ 35.309085]
[ 35.309438] Memory state around the buggy address:
[ 35.310506] ffff88801ae54400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.312047] ffff88801ae54480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.313596] >ffff88801ae54500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.315118] ^
[ 35.316247] ffff88801ae54580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.317779] ffff88801ae54600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 35.319303] ==================================================================
[ 35.359192] cgroup: Unknown subsys name 'hugetlb'
[ 35.366809] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:26:14 Registers:
info registers vcpu 0
RAX=000000000000002d RBX=00000000000003f8 RCX=0000000000000000 RDX=00000000000003f8
RSI=ffffffff823640e1 RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff88800b66f648
R8 =0000000000000000 R9 =000000000000002d R10=ffffffff82365d23 R11=000000000000000a
R12=000000000000002d R13=000000000000002d 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=00007f278612f550 CR3=000000000d312000 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 a76442021f5d988b 3d49ed4bdddfa481
YMM02=0000000000000000 0000000000000000 1210b8ba71c28343 000000000011a470
YMM03=0000000000000000 0000000000000000 5455f292e4781f14 000000000012c378
YMM04=0000000000000000 0000000000000000 29afdb8330ed320c 00000000000ae980
YMM05=0000000000000000 0000000000000000 9ebfcf3a7e7141ea 000000000012c3e8
YMM06=0000000000000000 0000000000000000 698e0f81b0932b79 000000000012c320
YMM07=0000000000000000 0000000000000000 e45775b7bd281a64 000000000011a410
YMM08=0000000000000000 0000000000000000 e2de77aa903facfa 000000000011a360
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=0000000000000001 RBX=0000000000000001 RCX=0000000000000000 RDX=0000000000000000
RSI=00000000000000fb RDI=0000000000000003 RBP=ffff88806cf09ce8 RSP=ffff88806cf09c20
R8 =0000000000000000 R9 =ffff88806cf09c87 R10=0000000000000001 R11=0000000000000000
R12=dffffc0000000000 R13=ffffffff84657048 R14=0000000000000000 R15=0000000000000040
RIP=ffffffff8110e1de 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 00005555556e4400 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=000000c000764000 CR3=0000000018030000 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 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