Warning: Permanently added '[localhost]:38712' (ECDSA) to the list of known hosts.
2021/12/06 11:38:42 fuzzer started
2021/12/06 11:38:42 dialing manager at localhost:35719
2021/12/06 11:38:42 checking machine...
2021/12/06 11:38:42 checking revisions...
syzkaller login: [ 36.200584] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:38:42 testing simple program...
[ 36.241798] cgroup: Unknown subsys name 'net'
[ 36.242988] cgroup: Unknown subsys name 'net_prio'
[ 36.244287] cgroup: Unknown subsys name 'devices'
[ 36.245633] cgroup: Unknown subsys name 'blkio'
[ 36.274186]
[ 36.274607] =========================
[ 36.275481] WARNING: held lock freed!
[ 36.276348] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 36.277567] -------------------------
[ 36.278706] kworker/0:1/10 is freeing memory ffff8880083d0800-ffff8880083d09ff, with a lock still held there!
[ 36.281015] ffff8880083d0948 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 36.282728] 3 locks held by kworker/0:1/10:
[ 36.283566] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 36.285601] #1: ffff888008197da8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 36.288034] #2: ffff8880083d0948 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 36.289875]
[ 36.289875] stack backtrace:
[ 36.290854] CPU: 0 PID: 10 Comm: kworker/0:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 36.292391] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 36.294776] Workqueue: cgroup_destroy css_free_rwork_fn
[ 36.295986] Call Trace:
[ 36.296505]
[ 36.296960] dump_stack_lvl+0x8b/0xb3
[ 36.297693] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 36.298759] ? kernfs_put.part.0+0x334/0x540
[ 36.299627] kfree+0xb3/0x5a0
[ 36.300246] ? kmem_cache_free+0xce/0x640
[ 36.301071] kernfs_put.part.0+0x334/0x540
[ 36.301884] kernfs_put+0x42/0x50
[ 36.302536] __kernfs_remove+0x7ce/0xb00
[ 36.303334] ? lock_is_held_type+0xd7/0x130
[ 36.304179] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 36.305231] ? down_write+0xde/0x150
[ 36.305984] ? down_write_killable_nested+0x180/0x180
[ 36.306995] kernfs_destroy_root+0x89/0xb0
[ 36.307843] css_free_rwork_fn+0xa28/0xf40
[ 36.308672] process_one_work+0xa30/0x1710
[ 36.309538] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 36.310451] ? rwlock_bug.part.0+0x90/0x90
[ 36.311290] ? _raw_spin_lock_irq+0x41/0x50
[ 36.312131] worker_thread+0x62a/0x13e0
[ 36.312911] ? process_one_work+0x1710/0x1710
[ 36.313824] kthread+0x40c/0x500
[ 36.314488] ? set_kthread_struct+0x130/0x130
[ 36.315376] ret_from_fork+0x22/0x30
[ 36.316109]
[ 36.316624] ==================================================================
[ 36.318065] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 36.319241] Read of size 8 at addr ffff8880083d0940 by task kworker/0:1/10
[ 36.320584]
[ 36.320900] CPU: 0 PID: 10 Comm: kworker/0:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 36.322447] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 36.324687] Workqueue: cgroup_destroy css_free_rwork_fn
[ 36.325759] Call Trace:
[ 36.326265]
[ 36.326700] dump_stack_lvl+0x8b/0xb3
[ 36.327486] print_address_description.constprop.0+0x1f/0x180
[ 36.328632] ? up_write+0x3ac/0x460
[ 36.329360] ? up_write+0x3ac/0x460
[ 36.330088] kasan_report.cold+0x7f/0x11b
[ 36.330905] ? up_write+0x3ac/0x460
[ 36.331634] up_write+0x3ac/0x460
[ 36.332317] css_free_rwork_fn+0xa28/0xf40
[ 36.333153] process_one_work+0xa30/0x1710
[ 36.334023] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 36.334944] ? rwlock_bug.part.0+0x90/0x90
[ 36.335781] ? _raw_spin_lock_irq+0x41/0x50
[ 36.336629] worker_thread+0x62a/0x13e0
[ 36.337447] ? process_one_work+0x1710/0x1710
[ 36.338332] kthread+0x40c/0x500
[ 36.338990] ? set_kthread_struct+0x130/0x130
[ 36.339897] ret_from_fork+0x22/0x30
[ 36.340637]
[ 36.341086]
[ 36.341436] Allocated by task 280:
[ 36.342121] kasan_save_stack+0x1e/0x40
[ 36.342905] __kasan_kmalloc+0x81/0xa0
[ 36.343683] kernfs_create_root+0x4c/0x410
[ 36.344503] cgroup_setup_root+0x346/0xb60
[ 36.345341] cgroup1_get_tree+0xc1b/0x1370
[ 36.346193] vfs_get_tree+0x8e/0x2f0
[ 36.346919] path_mount+0x131b/0x1f80
[ 36.347685] __x64_sys_mount+0x27e/0x300
[ 36.348481] do_syscall_64+0x3b/0x90
[ 36.349206] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 36.350249]
[ 36.350568] Freed by task 10:
[ 36.351188] kasan_save_stack+0x1e/0x40
[ 36.351970] kasan_set_track+0x21/0x30
[ 36.352729] kasan_set_free_info+0x20/0x30
[ 36.353591] __kasan_slab_free+0x108/0x170
[ 36.354424] kfree+0xc5/0x5a0
[ 36.355031] kernfs_put.part.0+0x334/0x540
[ 36.355880] kernfs_put+0x42/0x50
[ 36.356562] __kernfs_remove+0x7ce/0xb00
[ 36.357376] kernfs_destroy_root+0x89/0xb0
[ 36.358214] css_free_rwork_fn+0xa28/0xf40
[ 36.359040] process_one_work+0xa30/0x1710
[ 36.359875] worker_thread+0x62a/0x13e0
[ 36.360651] kthread+0x40c/0x500
[ 36.361319] ret_from_fork+0x22/0x30
[ 36.362074]
[ 36.362392] The buggy address belongs to the object at ffff8880083d0800
[ 36.362392] which belongs to the cache kmalloc-512 of size 512
[ 36.364814] The buggy address is located 320 bytes inside of
[ 36.364814] 512-byte region [ffff8880083d0800, ffff8880083d0a00)
[ 36.367103] The buggy address belongs to the page:
[ 36.368044] page:000000004f64a75e refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x83d0
[ 36.369843] head:000000004f64a75e order:2 compound_mapcount:0 compound_pincount:0
[ 36.371350] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 36.372488] raw: 0100000000010200 dead000000000100 dead000000000122 ffff888007841c80
[ 36.373978] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
[ 36.375530] page dumped because: kasan: bad access detected
[ 36.376609]
[ 36.376925] Memory state around the buggy address:
[ 36.377869] ffff8880083d0800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.379321] ffff8880083d0880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.380720] >ffff8880083d0900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.382114] ^
[ 36.383215] ffff8880083d0980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.384624] ffff8880083d0a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 36.386029] ==================================================================
[ 36.414171] cgroup: Unknown subsys name 'hugetlb'
[ 36.417953] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:38:42 Registers:
info registers vcpu 0
RAX=000000000000002d RBX=00000000000003f8 RCX=0000000000000000 RDX=00000000000003f8
RSI=ffffffff823640e1 RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff888008197648
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=00007ffec4fc0000 CR3=000000001d230000 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 3f847ae147ae147b
YMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM03=0000000000000000 0000000000000000 0000000000000000 3f73a5137dde0d23
YMM04=0000000000000000 0000000000000000 0000000000000007 000000c00009a570
YMM05=0000000000000000 0000000000000000 0000000000000007 000000c00009a8d5
YMM06=0000000000000000 0000000000000000 0000000000000006 000000c00009a8e0
YMM07=0000000000000000 0000000000000000 0000000000000003 000000c00009a8e6
YMM08=0000000000000000 0000000000000000 000000000000000a 000000c00009a8f0
YMM09=0000000000000000 0000000000000000 0000000000000006 000000c00009a8ea
YMM10=0000000000000000 0000000000000000 0000000000000010 000000c00009a900
YMM11=0000000000000000 0000000000000000 0000000000000004 000000c00009a910
YMM12=0000000000000000 0000000000000000 0000000000000006 000000c00009a914
YMM13=0000000000000000 0000000000000000 000000c00009a3f0 0000000000000001
YMM14=0000000000000000 0000000000000000 000000c00048a690 0000000000000005
YMM15=0000000000000000 0000000000000000 0000000000000001 0000000000000001
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=0000561345e225e0 CR3=000000001d230000 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