Warning: Permanently added '[localhost]:34436' (ECDSA) to the list of known hosts.
2021/12/06 11:32:23 fuzzer started
2021/12/06 11:32:23 dialing manager at localhost:35719
2021/12/06 11:32:23 checking machine...
2021/12/06 11:32:23 checking revisions...
syzkaller login: [ 36.618761] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:32:23 testing simple program...
[ 36.656317] cgroup: Unknown subsys name 'net'
[ 36.657696] cgroup: Unknown subsys name 'net_prio'
[ 36.658939] cgroup: Unknown subsys name 'devices'
[ 36.660181] cgroup: Unknown subsys name 'blkio'
[ 36.685874]
[ 36.686309] =========================
[ 36.687188] WARNING: held lock freed!
[ 36.688049] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 36.689210] -------------------------
[ 36.690263] kworker/1:0/18 is freeing memory ffff888017d66400-ffff888017d665ff, with a lock still held there!
[ 36.693500] ffff888017d66548 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 36.695583] 3 locks held by kworker/1:0/18:
[ 36.696576] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 36.698997] #1: ffff88800823fda8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 36.701414] #2: ffff888017d66548 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 36.703255]
[ 36.703255] stack backtrace:
[ 36.704130] CPU: 1 PID: 18 Comm: kworker/1:0 Not tainted 5.16.0-rc3-next-20211203 #1
[ 36.705639] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 36.707882] Workqueue: cgroup_destroy css_free_rwork_fn
[ 36.708931] Call Trace:
[ 36.709432]
[ 36.709867] dump_stack_lvl+0x8b/0xb3
[ 36.710617] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 36.711663] ? kernfs_put.part.0+0x334/0x540
[ 36.712526] kfree+0xb3/0x5a0
[ 36.713142] ? kmem_cache_free+0xce/0x640
[ 36.713947] kernfs_put.part.0+0x334/0x540
[ 36.714783] kernfs_put+0x42/0x50
[ 36.715455] __kernfs_remove+0x7ce/0xb00
[ 36.716253] ? lock_is_held_type+0xd7/0x130
[ 36.717095] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 36.718113] ? down_write+0xde/0x150
[ 36.718855] ? down_write_killable_nested+0x180/0x180
[ 36.719858] kernfs_destroy_root+0x89/0xb0
[ 36.720685] css_free_rwork_fn+0xa28/0xf40
[ 36.721512] process_one_work+0xa30/0x1710
[ 36.722350] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 36.723268] ? rwlock_bug.part.0+0x90/0x90
[ 36.724098] ? _raw_spin_lock_irq+0x41/0x50
[ 36.724947] worker_thread+0x62a/0x13e0
[ 36.725735] ? process_one_work+0x1710/0x1710
[ 36.726613] kthread+0x40c/0x500
[ 36.727351] ? set_kthread_struct+0x130/0x130
[ 36.728258] ret_from_fork+0x22/0x30
[ 36.729001]
[ 36.729512] ==================================================================
[ 36.730959] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 36.732123] Read of size 8 at addr ffff888017d66540 by task kworker/1:0/18
[ 36.733484]
[ 36.733808] CPU: 1 PID: 18 Comm: kworker/1:0 Not tainted 5.16.0-rc3-next-20211203 #1
[ 36.735359] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 36.737601] Workqueue: cgroup_destroy css_free_rwork_fn
[ 36.738658] Call Trace:
[ 36.739184]
[ 36.739624] dump_stack_lvl+0x8b/0xb3
[ 36.740381] print_address_description.constprop.0+0x1f/0x180
[ 36.741537] ? up_write+0x3ac/0x460
[ 36.742251] ? up_write+0x3ac/0x460
[ 36.742972] kasan_report.cold+0x7f/0x11b
[ 36.743790] ? up_write+0x3ac/0x460
[ 36.744508] up_write+0x3ac/0x460
[ 36.745197] css_free_rwork_fn+0xa28/0xf40
[ 36.746033] process_one_work+0xa30/0x1710
[ 36.746886] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 36.747802] ? rwlock_bug.part.0+0x90/0x90
[ 36.748637] ? _raw_spin_lock_irq+0x41/0x50
[ 36.749491] worker_thread+0x62a/0x13e0
[ 36.750283] ? process_one_work+0x1710/0x1710
[ 36.751189] kthread+0x40c/0x500
[ 36.751862] ? set_kthread_struct+0x130/0x130
[ 36.752753] ret_from_fork+0x22/0x30
[ 36.753498]
[ 36.753957]
[ 36.754282] Allocated by task 281:
[ 36.754978] kasan_save_stack+0x1e/0x40
[ 36.755764] __kasan_kmalloc+0x81/0xa0
[ 36.756531] kernfs_create_root+0x4c/0x410
[ 36.757362] cgroup_setup_root+0x346/0xb60
[ 36.758198] cgroup1_get_tree+0xc1b/0x1370
[ 36.759040] vfs_get_tree+0x8e/0x2f0
[ 36.759776] path_mount+0x131b/0x1f80
[ 36.760523] __x64_sys_mount+0x27e/0x300
[ 36.761324] do_syscall_64+0x3b/0x90
[ 36.762058] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 36.763088]
[ 36.763388] Freed by task 18:
[ 36.763982] kasan_save_stack+0x1e/0x40
[ 36.764730] kasan_set_track+0x21/0x30
[ 36.765473] kasan_set_free_info+0x20/0x30
[ 36.766281] __kasan_slab_free+0x108/0x170
[ 36.767093] kfree+0xc5/0x5a0
[ 36.767699] kernfs_put.part.0+0x334/0x540
[ 36.768511] kernfs_put+0x42/0x50
[ 36.769181] __kernfs_remove+0x7ce/0xb00
[ 36.769960] kernfs_destroy_root+0x89/0xb0
[ 36.770794] css_free_rwork_fn+0xa28/0xf40
[ 36.771616] process_one_work+0xa30/0x1710
[ 36.772441] worker_thread+0x62a/0x13e0
[ 36.773225] kthread+0x40c/0x500
[ 36.773868] ret_from_fork+0x22/0x30
[ 36.774589]
[ 36.774913] The buggy address belongs to the object at ffff888017d66400
[ 36.774913] which belongs to the cache kmalloc-512 of size 512
[ 36.777321] The buggy address is located 320 bytes inside of
[ 36.777321] 512-byte region [ffff888017d66400, ffff888017d66600)
[ 36.779567] The buggy address belongs to the page:
[ 36.780503] page:000000008b8ce242 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x17d64
[ 36.782278] head:000000008b8ce242 order:2 compound_mapcount:0 compound_pincount:0
[ 36.783733] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 36.784872] raw: 0100000000010200 0000000000000000 dead000000000122 ffff888007841c80
[ 36.786361] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
[ 36.787871] page dumped because: kasan: bad access detected
[ 36.788951]
[ 36.789265] Memory state around the buggy address:
[ 36.790205] ffff888017d66400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.791626] ffff888017d66480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.793025] >ffff888017d66500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.794428] ^
[ 36.795474] ffff888017d66580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.796870] ffff888017d66600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 36.798271] ==================================================================
[ 36.824875] cgroup: Unknown subsys name 'hugetlb'
[ 36.826084] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:32:24 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=00007efea1685360 CR3=00000000093fc000 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 7465677261742e79 636e656772656d65
YMM02=0000000000000000 0000000000000000 ffffffffffffffff 0f0e0d0c0b0a0908
YMM03=0000000000000000 0000000000000000 0000000000000073 66626c7465677568
YMM04=0000000000000000 0000000000000000 2e2e2e2e2e2e2e2e 2e2e2e2e2e2e2e2e
YMM05=0000000000000000 0000000000000000 396633353937322d 353330382d636539
YMM06=0000000000000000 0000000000000000 0000000000000000 6c6562616c636573
YMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM08=0000000000000000 0000000000000000 6564636261393837 3635343332313040
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=0000000000000038 RBX=00000000000003f8 RCX=0000000000000000 RDX=00000000000003f8
RSI=ffffffff823640e1 RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff88800823f648
R8 =0000000000000000 R9 =0000000000000038 R10=ffffffff82365d23 R11=000000000000000a
R12=0000000000000038 R13=0000000000000038 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=00007ffc00021000 CR3=000000001813a000 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