Warning: Permanently added '[localhost]:37189' (ECDSA) to the list of known hosts.
2021/12/06 11:37:34 fuzzer started
2021/12/06 11:37:34 dialing manager at localhost:35719
2021/12/06 11:37:34 checking machine...
2021/12/06 11:37:34 checking revisions...
syzkaller login: [ 35.502426] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:37:34 testing simple program...
[ 35.550476] cgroup: Unknown subsys name 'net'
[ 35.551427] cgroup: Unknown subsys name 'net_prio'
[ 35.553419] cgroup: Unknown subsys name 'devices'
[ 35.554603] cgroup: Unknown subsys name 'blkio'
[ 35.590725]
[ 35.590998] =========================
[ 35.591462] WARNING: held lock freed!
[ 35.591929] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 35.592540] -------------------------
[ 35.593028] kworker/1:2/51 is freeing memory ffff88801d176c00-ffff88801d176dff, with a lock still held there!
[ 35.594255] ffff88801d176d48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.595361] 3 locks held by kworker/1:2/51:
[ 35.595890] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 35.597231] #1: ffff88800b577da8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 35.598851] #2: ffff88801d176d48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.600146]
[ 35.600146] stack backtrace:
[ 35.601366] CPU: 1 PID: 51 Comm: kworker/1:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.602434] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.604003] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.604904] Call Trace:
[ 35.605311]
[ 35.605611] dump_stack_lvl+0x8b/0xb3
[ 35.606148] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 35.606880] ? kernfs_put.part.0+0x334/0x540
[ 35.607476] kfree+0xb3/0x5a0
[ 35.607916] ? kmem_cache_free+0xce/0x640
[ 35.608483] kernfs_put.part.0+0x334/0x540
[ 35.609086] kernfs_put+0x42/0x50
[ 35.609515] __kernfs_remove+0x7ce/0xb00
[ 35.610563] ? lock_is_held_type+0xd7/0x130
[ 35.611684] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 35.613059] ? down_write+0xde/0x150
[ 35.614020] ? down_write_killable_nested+0x180/0x180
[ 35.615360] kernfs_destroy_root+0x89/0xb0
[ 35.616534] css_free_rwork_fn+0xa28/0xf40
[ 35.618016] process_one_work+0xa30/0x1710
[ 35.619119] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.620465] ? rwlock_bug.part.0+0x90/0x90
[ 35.621577] ? _raw_spin_lock_irq+0x41/0x50
[ 35.622777] worker_thread+0x62a/0x13e0
[ 35.623800] ? process_one_work+0x1710/0x1710
[ 35.625449] kthread+0x40c/0x500
[ 35.626336] ? set_kthread_struct+0x130/0x130
[ 35.627494] ret_from_fork+0x22/0x30
[ 35.628471]
[ 35.629220] ==================================================================
[ 35.631127] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 35.632706] Read of size 8 at addr ffff88801d176d40 by task kworker/1:2/51
[ 35.634243]
[ 35.634593] CPU: 1 PID: 51 Comm: kworker/1:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.635959] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.638726] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.640164] Call Trace:
[ 35.640860]
[ 35.641454] dump_stack_lvl+0x8b/0xb3
[ 35.642452] print_address_description.constprop.0+0x1f/0x180
[ 35.644014] ? up_write+0x3ac/0x460
[ 35.644976] ? up_write+0x3ac/0x460
[ 35.645921] kasan_report.cold+0x7f/0x11b
[ 35.646973] ? up_write+0x3ac/0x460
[ 35.647936] up_write+0x3ac/0x460
[ 35.648857] css_free_rwork_fn+0xa28/0xf40
[ 35.649973] process_one_work+0xa30/0x1710
[ 35.651105] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.652362] ? rwlock_bug.part.0+0x90/0x90
[ 35.653523] ? _raw_spin_lock_irq+0x41/0x50
[ 35.654722] worker_thread+0x62a/0x13e0
[ 35.655790] ? process_one_work+0x1710/0x1710
[ 35.657068] kthread+0x40c/0x500
[ 35.657979] ? set_kthread_struct+0x130/0x130
[ 35.659188] ret_from_fork+0x22/0x30
[ 35.660202]
[ 35.660847]
[ 35.661286] Allocated by task 282:
[ 35.662242] kasan_save_stack+0x1e/0x40
[ 35.663318] __kasan_kmalloc+0x81/0xa0
[ 35.664389] kernfs_create_root+0x4c/0x410
[ 35.665523] cgroup_setup_root+0x346/0xb60
[ 35.666678] cgroup1_get_tree+0xc1b/0x1370
[ 35.667829] vfs_get_tree+0x8e/0x2f0
[ 35.668858] path_mount+0x131b/0x1f80
[ 35.669892] __x64_sys_mount+0x27e/0x300
[ 35.671010] do_syscall_64+0x3b/0x90
[ 35.671572] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 35.672380]
[ 35.672643] Freed by task 51:
[ 35.673367] kasan_save_stack+0x1e/0x40
[ 35.673961] kasan_set_track+0x21/0x30
[ 35.674541] kasan_set_free_info+0x20/0x30
[ 35.675179] __kasan_slab_free+0x108/0x170
[ 35.676195] kfree+0xc5/0x5a0
[ 35.676637] kernfs_put.part.0+0x334/0x540
[ 35.677306] kernfs_put+0x42/0x50
[ 35.677825] __kernfs_remove+0x7ce/0xb00
[ 35.678431] kernfs_destroy_root+0x89/0xb0
[ 35.679029] css_free_rwork_fn+0xa28/0xf40
[ 35.679671] process_one_work+0xa30/0x1710
[ 35.680310] worker_thread+0x62a/0x13e0
[ 35.680926] kthread+0x40c/0x500
[ 35.681404] ret_from_fork+0x22/0x30
[ 35.681956]
[ 35.682202] The buggy address belongs to the object at ffff88801d176c00
[ 35.682202] which belongs to the cache kmalloc-512 of size 512
[ 35.684023] The buggy address is located 320 bytes inside of
[ 35.684023] 512-byte region [ffff88801d176c00, ffff88801d176e00)
[ 35.685664] The buggy address belongs to the page:
[ 35.686344] page:00000000b09f3941 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1d174
[ 35.687619] head:00000000b09f3941 order:2 compound_mapcount:0 compound_pincount:0
[ 35.688679] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 35.689505] raw: 0100000000010200 dead000000000100 dead000000000122 ffff888007841c80
[ 35.690590] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
[ 35.691642] page dumped because: kasan: bad access detected
[ 35.692431]
[ 35.692682] Memory state around the buggy address:
[ 35.693349] ffff88801d176c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.694362] ffff88801d176c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.695355] >ffff88801d176d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.696411] ^
[ 35.697186] ffff88801d176d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.698192] ffff88801d176e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 35.699184] ==================================================================
[ 35.718783] cgroup: Unknown subsys name 'hugetlb'
[ 35.720427] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:37:35 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=000055f737092d60 CR3=000000000ed38000 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 ffffffffffffffff ffffffffffffffff
YMM01=0000000000000000 0000000000000000 3030623438613630 3638616663356134
YMM02=0000000000000000 0000000000000000 3830306234386136 3036386166633561
YMM03=0000000000000000 0000000000000000 2f6c616e72756f6a 2f676f6c2f6e7572
YMM04=0000000000000000 0000000000000000 6c615f737570430a 64656c62616e6520
YMM05=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM06=0000000000000000 0000000000000000 616142736365430a 6465496261696520
YMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM08=0000000000000000 0000000000000000 415453454d49545f 454d49544c414552
YMM09=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM10=0000000000000000 0000000000000000 2020000000002020 2020202020200000
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=0000000000000078 RBX=00000000000003f8 RCX=0000000000000000 RDX=00000000000003f8
RSI=ffffffff823640e1 RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff88800b577538
R8 =0000000000000000 R9 =0000000000000078 R10=ffffffff82365d23 R11=000000000000000a
R12=0000000000000078 R13=0000000000000078 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=00007fdbea9e8050 CR3=000000000df34000 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 2034333a37333a31 3120362020636544
YMM01=0000000000000000 0000000000000000 2d70756f7267637a 7973203a5d315b64
YMM02=0000000000000000 0000000000000000 6f6d2e74656e2d70 756f7267637a7973
YMM03=0000000000000000 0000000000000000 6c616b7a79732034 333a37333a313120
YMM04=0000000000000000 0000000000000000 6966206863757320 6f4e203a656c6163
YMM05=0000000000000000 0000000000000000 3a656c696620766e 65206e65706f206f
YMM06=0000000000000000 0000000000000000 65733a6468737328 766e655f6d617020
YMM07=0000000000000000 0000000000000000 6b7a79732034333a 37333a3131203620
YMM08=0000000000000000 0000000000000000 6d2030733a745f6c 656e72656b3a725f
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