Warning: Permanently added '[localhost]:1381' (ECDSA) to the list of known hosts.
2021/12/06 11:38:21 fuzzer started
2021/12/06 11:38:22 dialing manager at localhost:35719
2021/12/06 11:38:22 checking machine...
2021/12/06 11:38:22 checking revisions...
syzkaller login: [ 35.450313] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:38:22 testing simple program...
[ 35.495220] cgroup: Unknown subsys name 'net'
[ 35.496653] cgroup: Unknown subsys name 'net_prio'
[ 35.498131] cgroup: Unknown subsys name 'devices'
[ 35.499681] cgroup: Unknown subsys name 'blkio'
[ 35.521610]
[ 35.521959] =========================
[ 35.522699] WARNING: held lock freed!
[ 35.523444] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 35.524641] -------------------------
[ 35.525818] kworker/0:1/10 is freeing memory ffff88800e8af400-ffff88800e8af5ff, with a lock still held there!
[ 35.528110] ffff88800e8af548 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.529910] 3 locks held by kworker/0:1/10:
[ 35.530753] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 35.532813] #1: ffff888008197da8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 35.535117] #2: ffff88800e8af548 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.536938]
[ 35.536938] stack backtrace:
[ 35.537797] CPU: 0 PID: 10 Comm: kworker/0:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.539309] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.541532] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.542574] Call Trace:
[ 35.543076]
[ 35.543509] dump_stack_lvl+0x8b/0xb3
[ 35.544256] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 35.545293] ? kernfs_put.part.0+0x334/0x540
[ 35.546159] kfree+0xb3/0x5a0
[ 35.546768] ? kmem_cache_free+0xce/0x640
[ 35.547576] kernfs_put.part.0+0x334/0x540
[ 35.548409] kernfs_put+0x42/0x50
[ 35.549104] __kernfs_remove+0x7ce/0xb00
[ 35.549896] ? lock_is_held_type+0xd7/0x130
[ 35.550739] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 35.551763] ? down_write+0xde/0x150
[ 35.552499] ? down_write_killable_nested+0x180/0x180
[ 35.553510] kernfs_destroy_root+0x89/0xb0
[ 35.554335] css_free_rwork_fn+0xa28/0xf40
[ 35.555166] process_one_work+0xa30/0x1710
[ 35.556000] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.556918] ? rwlock_bug.part.0+0x90/0x90
[ 35.557744] ? _raw_spin_lock_irq+0x41/0x50
[ 35.558595] worker_thread+0x62a/0x13e0
[ 35.559379] ? process_one_work+0x1710/0x1710
[ 35.560258] kthread+0x40c/0x500
[ 35.560935] ? set_kthread_struct+0x130/0x130
[ 35.561818] ret_from_fork+0x22/0x30
[ 35.562554]
[ 35.563070] ==================================================================
[ 35.564490] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 35.565649] Read of size 8 at addr ffff88800e8af540 by task kworker/0:1/10
[ 35.566993]
[ 35.567310] CPU: 0 PID: 10 Comm: kworker/0:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.568837] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.571036] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.572071] Call Trace:
[ 35.572584]
[ 35.573020] dump_stack_lvl+0x8b/0xb3
[ 35.573768] print_address_description.constprop.0+0x1f/0x180
[ 35.574912] ? up_write+0x3ac/0x460
[ 35.575619] ? up_write+0x3ac/0x460
[ 35.576326] kasan_report.cold+0x7f/0x11b
[ 35.577146] ? up_write+0x3ac/0x460
[ 35.577859] up_write+0x3ac/0x460
[ 35.578539] css_free_rwork_fn+0xa28/0xf40
[ 35.579372] process_one_work+0xa30/0x1710
[ 35.580209] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.581141] ? rwlock_bug.part.0+0x90/0x90
[ 35.581968] ? _raw_spin_lock_irq+0x41/0x50
[ 35.582818] worker_thread+0x62a/0x13e0
[ 35.583604] ? process_one_work+0x1710/0x1710
[ 35.584492] kthread+0x40c/0x500
[ 35.585161] ? set_kthread_struct+0x130/0x130
[ 35.586033] ret_from_fork+0x22/0x30
[ 35.586769]
[ 35.587218]
[ 35.587536] Allocated by task 281:
[ 35.588215] kasan_save_stack+0x1e/0x40
[ 35.589022] __kasan_kmalloc+0x81/0xa0
[ 35.589773] kernfs_create_root+0x4c/0x410
[ 35.590592] cgroup_setup_root+0x346/0xb60
[ 35.591409] cgroup1_get_tree+0xc1b/0x1370
[ 35.592239] vfs_get_tree+0x8e/0x2f0
[ 35.593010] path_mount+0x131b/0x1f80
[ 35.593745] __x64_sys_mount+0x27e/0x300
[ 35.594526] do_syscall_64+0x3b/0x90
[ 35.595250] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 35.596253]
[ 35.596582] Freed by task 10:
[ 35.597189] kasan_save_stack+0x1e/0x40
[ 35.597953] kasan_set_track+0x21/0x30
[ 35.598703] kasan_set_free_info+0x20/0x30
[ 35.599538] __kasan_slab_free+0x108/0x170
[ 35.600351] kfree+0xc5/0x5a0
[ 35.600979] kernfs_put.part.0+0x334/0x540
[ 35.601798] kernfs_put+0x42/0x50
[ 35.602470] __kernfs_remove+0x7ce/0xb00
[ 35.603252] kernfs_destroy_root+0x89/0xb0
[ 35.604067] css_free_rwork_fn+0xa28/0xf40
[ 35.604905] process_one_work+0xa30/0x1710
[ 35.605729] worker_thread+0x62a/0x13e0
[ 35.606500] kthread+0x40c/0x500
[ 35.607147] ret_from_fork+0x22/0x30
[ 35.607865]
[ 35.608174] The buggy address belongs to the object at ffff88800e8af400
[ 35.608174] which belongs to the cache kmalloc-512 of size 512
[ 35.610603] The buggy address is located 320 bytes inside of
[ 35.610603] 512-byte region [ffff88800e8af400, ffff88800e8af600)
[ 35.612916] The buggy address belongs to the page:
[ 35.613869] page:000000001748a0b4 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe8ac
[ 35.615684] head:000000001748a0b4 order:2 compound_mapcount:0 compound_pincount:0
[ 35.617182] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 35.618351] raw: 0100000000010200 ffffea000039cd00 dead000000000002 ffff888007841c80
[ 35.619890] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
[ 35.621421] page dumped because: kasan: bad access detected
[ 35.622507]
[ 35.622826] Memory state around the buggy address:
[ 35.623768] ffff88800e8af400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.625185] ffff88800e8af480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.626587] >ffff88800e8af500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.627991] ^
[ 35.629051] ffff88800e8af580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.630455] ffff88800e8af600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 35.631864] ==================================================================
[ 35.659483] cgroup: Unknown subsys name 'hugetlb'
[ 35.662402] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:38:22 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=00007ffc42047c88 CR3=000000000c82a000 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 414201a4ae3a5e4b
YMM01=0000000000000000 0000000000000000 0000000000000000 3f847ae147ae147b
YMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM03=0000000000000000 0000000000000000 0000000000000000 3f7376055a2fcd32
YMM04=0000000000000000 0000000000000000 6332313439623231 6135333737626566
YMM05=0000000000000000 0000000000000000 6135373732623864 6220623534303537
YMM06=0000000000000000 0000000000000000 3736353531366532 3039393536333966
YMM07=0000000000000000 0000000000000000 0a32393233623436 3862386234363430
YMM08=0000000000000000 0000000000000000 000000c00027b5f8 000000c00027b5f0
YMM09=0000000000000000 0000000000000000 00000000004643c1 0000000000000000
YMM10=0000000000000000 0000000000000000 000000c00000dc00 000000c0003362c0
YMM11=0000000000000000 0000000000000000 000000c00027b628 000000c00027b620
YMM12=0000000000000000 0000000000000000 000000c00027b638 000000c00027b630
YMM13=0000000000000000 0000000000000000 0000000000000003 000000c0002ffd60
YMM14=0000000000000000 0000000000000000 0000000000000001 000000c000014428
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=00007ff94a4b2000 CR3=000000000c82a000 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