Warning: Permanently added '[localhost]:23802' (ECDSA) to the list of known hosts.
2021/12/06 11:31:25 fuzzer started
2021/12/06 11:31:26 dialing manager at localhost:35719
2021/12/06 11:31:26 checking machine...
2021/12/06 11:31:26 checking revisions...
syzkaller login: [ 35.976097] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:31:26 testing simple program...
[ 36.016903] cgroup: Unknown subsys name 'net'
[ 36.018269] cgroup: Unknown subsys name 'net_prio'
[ 36.019554] cgroup: Unknown subsys name 'devices'
[ 36.020869] cgroup: Unknown subsys name 'blkio'
[ 36.041818]
[ 36.042176] =========================
[ 36.042923] WARNING: held lock freed!
[ 36.043666] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 36.044737] -------------------------
[ 36.045801] kworker/0:1/10 is freeing memory ffff8880083d1c00-ffff8880083d1dff, with a lock still held there!
[ 36.047970] ffff8880083d1d48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 36.049710] 3 locks held by kworker/0:1/10:
[ 36.050543] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 36.052548] #1: ffff888008197da8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 36.054832] #2: ffff8880083d1d48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 36.056669]
[ 36.056669] stack backtrace:
[ 36.057527] CPU: 0 PID: 10 Comm: kworker/0:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 36.059039] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 36.061232] Workqueue: cgroup_destroy css_free_rwork_fn
[ 36.062267] Call Trace:
[ 36.062758]
[ 36.063196] dump_stack_lvl+0x8b/0xb3
[ 36.063952] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 36.064994] ? kernfs_put.part.0+0x334/0x540
[ 36.065866] kfree+0xb3/0x5a0
[ 36.066480] ? kmem_cache_free+0xce/0x640
[ 36.067304] kernfs_put.part.0+0x334/0x540
[ 36.068133] kernfs_put+0x42/0x50
[ 36.068809] __kernfs_remove+0x7ce/0xb00
[ 36.069594] ? lock_is_held_type+0xd7/0x130
[ 36.070431] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 36.071460] ? down_write+0xde/0x150
[ 36.072184] ? down_write_killable_nested+0x180/0x180
[ 36.073184] kernfs_destroy_root+0x89/0xb0
[ 36.074002] css_free_rwork_fn+0xa28/0xf40
[ 36.074824] process_one_work+0xa30/0x1710
[ 36.075663] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 36.076566] ? rwlock_bug.part.0+0x90/0x90
[ 36.077387] ? _raw_spin_lock_irq+0x41/0x50
[ 36.078231] worker_thread+0x62a/0x13e0
[ 36.079016] ? process_one_work+0x1710/0x1710
[ 36.079890] kthread+0x40c/0x500
[ 36.080532] ? set_kthread_struct+0x130/0x130
[ 36.081394] ret_from_fork+0x22/0x30
[ 36.082128]
[ 36.082641] ==================================================================
[ 36.084067] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 36.085207] Read of size 8 at addr ffff8880083d1d40 by task kworker/0:1/10
[ 36.086532]
[ 36.086848] CPU: 0 PID: 10 Comm: kworker/0:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 36.088356] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 36.090553] Workqueue: cgroup_destroy css_free_rwork_fn
[ 36.091593] Call Trace:
[ 36.092090]
[ 36.092525] dump_stack_lvl+0x8b/0xb3
[ 36.093267] print_address_description.constprop.0+0x1f/0x180
[ 36.094397] ? up_write+0x3ac/0x460
[ 36.095119] ? up_write+0x3ac/0x460
[ 36.095824] kasan_report.cold+0x7f/0x11b
[ 36.096630] ? up_write+0x3ac/0x460
[ 36.097338] up_write+0x3ac/0x460
[ 36.098015] css_free_rwork_fn+0xa28/0xf40
[ 36.098844] process_one_work+0xa30/0x1710
[ 36.099683] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 36.100581] ? rwlock_bug.part.0+0x90/0x90
[ 36.101407] ? _raw_spin_lock_irq+0x41/0x50
[ 36.102266] worker_thread+0x62a/0x13e0
[ 36.103079] ? process_one_work+0x1710/0x1710
[ 36.103959] kthread+0x40c/0x500
[ 36.104627] ? set_kthread_struct+0x130/0x130
[ 36.105498] ret_from_fork+0x22/0x30
[ 36.106231]
[ 36.106687]
[ 36.107019] Allocated by task 281:
[ 36.107708] kasan_save_stack+0x1e/0x40
[ 36.108486] __kasan_kmalloc+0x81/0xa0
[ 36.109249] kernfs_create_root+0x4c/0x410
[ 36.110080] cgroup_setup_root+0x346/0xb60
[ 36.110915] cgroup1_get_tree+0xc1b/0x1370
[ 36.111742] vfs_get_tree+0x8e/0x2f0
[ 36.112479] path_mount+0x131b/0x1f80
[ 36.113226] __x64_sys_mount+0x27e/0x300
[ 36.114026] do_syscall_64+0x3b/0x90
[ 36.114752] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 36.115772]
[ 36.116085] Freed by task 10:
[ 36.116691] kasan_save_stack+0x1e/0x40
[ 36.117471] kasan_set_track+0x21/0x30
[ 36.118231] kasan_set_free_info+0x20/0x30
[ 36.119071] __kasan_slab_free+0x108/0x170
[ 36.119910] kfree+0xc5/0x5a0
[ 36.120525] kernfs_put.part.0+0x334/0x540
[ 36.121358] kernfs_put+0x42/0x50
[ 36.122042] __kernfs_remove+0x7ce/0xb00
[ 36.122832] kernfs_destroy_root+0x89/0xb0
[ 36.123676] css_free_rwork_fn+0xa28/0xf40
[ 36.124511] process_one_work+0xa30/0x1710
[ 36.125344] worker_thread+0x62a/0x13e0
[ 36.126132] kthread+0x40c/0x500
[ 36.126794] ret_from_fork+0x22/0x30
[ 36.127526]
[ 36.127836] The buggy address belongs to the object at ffff8880083d1c00
[ 36.127836] which belongs to the cache kmalloc-512 of size 512
[ 36.130268] The buggy address is located 320 bytes inside of
[ 36.130268] 512-byte region [ffff8880083d1c00, ffff8880083d1e00)
[ 36.132573] The buggy address belongs to the page:
[ 36.133516] page:00000000ec3228e0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x83d0
[ 36.135337] head:00000000ec3228e0 order:2 compound_mapcount:0 compound_pincount:0
[ 36.136797] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 36.137932] raw: 0100000000010200 ffffea000039b100 dead000000000002 ffff888007841c80
[ 36.139446] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
[ 36.140931] page dumped because: kasan: bad access detected
[ 36.142019]
[ 36.142331] Memory state around the buggy address:
[ 36.143294] ffff8880083d1c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.144715] ffff8880083d1c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.146133] >ffff8880083d1d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.147565] ^
[ 36.148624] ffff8880083d1d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.150040] ffff8880083d1e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 36.151474] ==================================================================
[ 36.190078] cgroup: Unknown subsys name 'hugetlb'
[ 36.192084] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:31:26 Registers:
info registers vcpu 0
RAX=000000000000000a RBX=00000000000003f8 RCX=0000000000000000 RDX=00000000000003f8
RSI=ffffffff823640e1 RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff888008197648
R8 =0000000000000000 R9 =000000000000000a R10=ffffffff82365d23 R11=000000000000000a
R12=000000000000000a R13=000000000000000a 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=00007ffd59a97000 CR3=000000000d0b0000 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 692b202c6c6f7274 6e6f635f65657274
YMM02=0000000000000000 0000000000000000 202c6c6f72746e6f 635f656572746275
YMM03=0000000000000000 0000000000000000 0a3232203a64656c 69616620296f692b
YMM04=0000000000000000 0000000000000000 00007f5a1cfdf500 0000000000415710
YMM05=0000000000000000 0000000000000000 0000000000b12758 000000c0002e3660
YMM06=0000000000000000 0000000000000000 0000000000505007 000000c00002afc0
YMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM08=0000000000000000 0000000000000000 00000000004643c6 0000000000000000
YMM09=0000000000000000 0000000000000000 00000000004643c1 0000000000000000
YMM10=0000000000000000 0000000000000000 000000c0003b2160 000000c000158840
YMM11=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM12=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM13=0000000000000000 0000000000000000 000000c00008c1f0 000000c00008c1e0
YMM14=0000000000000000 0000000000000000 000000c00008c1b0 000000c00008c1c0
YMM15=0000000000000000 0000000000000000 000000c000528000 000000c00008c4a0
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=00007f49d1069000 CR3=0000000009428000 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 0f0e0d0c0b0a0908
YMM03=0000000000000000 0000000000000000 0000000000000073 66626c7465677568
YMM04=0000000000000000 0000000000000000 2e2e2e2e2e2e2e2e 2e2e2e2e2e2e2e2e
YMM05=0000000000000000 0000000000000000 612d312e31303a30 303a303030302d69
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