Warning: Permanently added '[localhost]:58228' (ECDSA) to the list of known hosts.
2021/12/06 11:38:20 fuzzer started
2021/12/06 11:38:21 dialing manager at localhost:35719
2021/12/06 11:38:21 checking machine...
2021/12/06 11:38:21 checking revisions...
syzkaller login: [ 35.167620] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:38:21 testing simple program...
[ 35.211521] cgroup: Unknown subsys name 'net'
[ 35.212781] cgroup: Unknown subsys name 'net_prio'
[ 35.215275] cgroup: Unknown subsys name 'devices'
[ 35.217682] cgroup: Unknown subsys name 'blkio'
[ 35.247670]
[ 35.248122] =========================
[ 35.248949] WARNING: held lock freed!
[ 35.249767] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 35.250883] -------------------------
[ 35.252123] kworker/0:2/115 is freeing memory ffff88800e700800-ffff88800e7009ff, with a lock still held there!
[ 35.254788] ffff88800e700948 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.256755] 3 locks held by kworker/0:2/115:
[ 35.257706] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 35.260040] #1: ffff888018467da8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 35.262654] #2: ffff88800e700948 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.264783]
[ 35.264783] stack backtrace:
[ 35.265785] CPU: 0 PID: 115 Comm: kworker/0:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.267516] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.270015] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.271213] Call Trace:
[ 35.271764]
[ 35.272237] dump_stack_lvl+0x8b/0xb3
[ 35.273046] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 35.274176] ? kernfs_put.part.0+0x334/0x540
[ 35.275130] kfree+0xb3/0x5a0
[ 35.275799] ? kmem_cache_free+0xce/0x640
[ 35.276684] kernfs_put.part.0+0x334/0x540
[ 35.277594] kernfs_put+0x42/0x50
[ 35.278330] __kernfs_remove+0x7ce/0xb00
[ 35.279212] ? lock_is_held_type+0xd7/0x130
[ 35.280150] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 35.281261] ? down_write+0xde/0x150
[ 35.282044] ? down_write_killable_nested+0x180/0x180
[ 35.283171] kernfs_destroy_root+0x89/0xb0
[ 35.284062] css_free_rwork_fn+0xa28/0xf40
[ 35.284959] process_one_work+0xa30/0x1710
[ 35.285865] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.286876] ? rwlock_bug.part.0+0x90/0x90
[ 35.287761] ? _raw_spin_lock_irq+0x41/0x50
[ 35.288666] worker_thread+0x62a/0x13e0
[ 35.289506] ? process_one_work+0x1710/0x1710
[ 35.290457] kthread+0x40c/0x500
[ 35.291206] ? set_kthread_struct+0x130/0x130
[ 35.292177] ret_from_fork+0x22/0x30
[ 35.292988]
[ 35.293620] ==================================================================
[ 35.295195] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 35.296461] Read of size 8 at addr ffff88800e700940 by task kworker/0:2/115
[ 35.297956]
[ 35.298305] CPU: 0 PID: 115 Comm: kworker/0:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.300007] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.302419] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.303570] Call Trace:
[ 35.304117]
[ 35.304591] dump_stack_lvl+0x8b/0xb3
[ 35.305413] print_address_description.constprop.0+0x1f/0x180
[ 35.306682] ? up_write+0x3ac/0x460
[ 35.307458] ? up_write+0x3ac/0x460
[ 35.308233] kasan_report.cold+0x7f/0x11b
[ 35.309124] ? up_write+0x3ac/0x460
[ 35.309899] up_write+0x3ac/0x460
[ 35.310643] css_free_rwork_fn+0xa28/0xf40
[ 35.311545] process_one_work+0xa30/0x1710
[ 35.312449] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.313440] ? rwlock_bug.part.0+0x90/0x90
[ 35.314337] ? _raw_spin_lock_irq+0x41/0x50
[ 35.315266] worker_thread+0x62a/0x13e0
[ 35.316118] ? process_one_work+0x1710/0x1710
[ 35.317068] kthread+0x40c/0x500
[ 35.317782] ? set_kthread_struct+0x130/0x130
[ 35.318751] ret_from_fork+0x22/0x30
[ 35.319551]
[ 35.320038]
[ 35.320382] Allocated by task 281:
[ 35.321124] kasan_save_stack+0x1e/0x40
[ 35.321962] __kasan_kmalloc+0x81/0xa0
[ 35.322793] kernfs_create_root+0x4c/0x410
[ 35.323683] cgroup_setup_root+0x346/0xb60
[ 35.324576] cgroup1_get_tree+0xc1b/0x1370
[ 35.325470] vfs_get_tree+0x8e/0x2f0
[ 35.326250] path_mount+0x131b/0x1f80
[ 35.327058] __x64_sys_mount+0x27e/0x300
[ 35.327912] do_syscall_64+0x3b/0x90
[ 35.328690] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 35.329772]
[ 35.330113] Freed by task 115:
[ 35.330792] kasan_save_stack+0x1e/0x40
[ 35.331634] kasan_set_track+0x21/0x30
[ 35.332452] kasan_set_free_info+0x20/0x30
[ 35.333348] __kasan_slab_free+0x108/0x170
[ 35.334242] kfree+0xc5/0x5a0
[ 35.334906] kernfs_put.part.0+0x334/0x540
[ 35.335801] kernfs_put+0x42/0x50
[ 35.336528] __kernfs_remove+0x7ce/0xb00
[ 35.337385] kernfs_destroy_root+0x89/0xb0
[ 35.338270] css_free_rwork_fn+0xa28/0xf40
[ 35.339163] process_one_work+0xa30/0x1710
[ 35.340051] worker_thread+0x62a/0x13e0
[ 35.340877] kthread+0x40c/0x500
[ 35.341582] ret_from_fork+0x22/0x30
[ 35.342358]
[ 35.342704] The buggy address belongs to the object at ffff88800e700800
[ 35.342704] which belongs to the cache kmalloc-512 of size 512
[ 35.345261] The buggy address is located 320 bytes inside of
[ 35.345261] 512-byte region [ffff88800e700800, ffff88800e700a00)
[ 35.347663] The buggy address belongs to the page:
[ 35.348675] page:0000000011c43597 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe700
[ 35.350613] head:0000000011c43597 order:2 compound_mapcount:0 compound_pincount:0
[ 35.352187] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 35.353403] raw: 0100000000010200 ffffea00003a5000 dead000000000002 ffff888007841c80
[ 35.355023] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
[ 35.356605] page dumped because: kasan: bad access detected
[ 35.357759]
[ 35.358102] Memory state around the buggy address:
[ 35.359139] ffff88800e700800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.360655] ffff88800e700880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.362128] >ffff88800e700900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.363650] ^
[ 35.364726] ffff88800e700980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.366222] ffff88800e700a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 35.367692] ==================================================================
[ 35.398843] cgroup: Unknown subsys name 'hugetlb'
[ 35.404986] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:38:21 Registers:
info registers vcpu 0
RAX=0000000000000005 RBX=00000000000003f9 RCX=0000000000000000 RDX=00000000000003f9
RSI=ffffffff823640e1 RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff888018467688
R8 =0000000000000000 R9 =000000000000000a R10=ffffffff82365d23 R11=000000000000000a
R12=0000000000000005 R13=0000000000000001 R14=ffffffff87381a78 R15=ffffffff87381a70
RIP=ffffffff82364138 RFL=00000006 [-----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 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=00007fffc69bd000 CR3=000000000d12a000 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=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=00007fdd86faf690 CR3=00000000094a6000 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 ffffffffffffffff
YMM03=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM04=0000000000000000 0000000000000000 2f2f2f2f2f2f2f2f 2f2f2f2f2f2f2f2f
YMM05=0000000000000000 0000000000000000 69642f7665642f20 31303030304d515f
YMM06=0000000000000000 0000000000000000 0000000000000000 6c6562616c636573
YMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM08=0000000000000000 0000000000000000 6665646362613938 3736353433323130
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