Warning: Permanently added '[localhost]:50831' (ECDSA) to the list of known hosts.
2021/12/06 11:32:15 fuzzer started
2021/12/06 11:32:15 dialing manager at localhost:35719
2021/12/06 11:32:15 checking machine...
2021/12/06 11:32:15 checking revisions...
syzkaller login: [ 34.877946] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:32:15 testing simple program...
[ 34.918251] cgroup: Unknown subsys name 'net'
[ 34.921003] cgroup: Unknown subsys name 'net_prio'
[ 34.922500] cgroup: Unknown subsys name 'devices'
[ 34.925333] cgroup: Unknown subsys name 'blkio'
[ 34.945291]
[ 34.945648] =========================
[ 34.946369] WARNING: held lock freed!
[ 34.947103] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 34.948308] -------------------------
[ 34.949555] kworker/0:2/47 is freeing memory ffff88800de45000-ffff88800de451ff, with a lock still held there!
[ 34.951919] ffff88800de45148 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 34.953696] 3 locks held by kworker/0:2/47:
[ 34.954531] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 34.956547] #1: ffff88800ef77da8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 34.958855] #2: ffff88800de45148 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 34.960659]
[ 34.960659] stack backtrace:
[ 34.961536] CPU: 0 PID: 47 Comm: kworker/0:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 34.963042] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 34.965259] Workqueue: cgroup_destroy css_free_rwork_fn
[ 34.966306] Call Trace:
[ 34.966804]
[ 34.967237] dump_stack_lvl+0x8b/0xb3
[ 34.967988] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 34.969030] ? kernfs_put.part.0+0x334/0x540
[ 34.969929] kfree+0xb3/0x5a0
[ 34.970552] ? kmem_cache_free+0xce/0x640
[ 34.971387] kernfs_put.part.0+0x334/0x540
[ 34.972237] kernfs_put+0x42/0x50
[ 34.972915] __kernfs_remove+0x7ce/0xb00
[ 34.973746] ? lock_is_held_type+0xd7/0x130
[ 34.974621] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 34.975694] ? down_write+0xde/0x150
[ 34.976452] ? down_write_killable_nested+0x180/0x180
[ 34.977511] kernfs_destroy_root+0x89/0xb0
[ 34.978374] css_free_rwork_fn+0xa28/0xf40
[ 34.979244] process_one_work+0xa30/0x1710
[ 34.980093] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 34.981013] ? rwlock_bug.part.0+0x90/0x90
[ 34.981875] ? _raw_spin_lock_irq+0x41/0x50
[ 34.982734] worker_thread+0x62a/0x13e0
[ 34.983558] ? process_one_work+0x1710/0x1710
[ 34.984452] kthread+0x40c/0x500
[ 34.985119] ? set_kthread_struct+0x130/0x130
[ 34.986034] ret_from_fork+0x22/0x30
[ 34.986783]
[ 34.987305] ==================================================================
[ 34.988781] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 34.990000] Read of size 8 at addr ffff88800de45140 by task kworker/0:2/47
[ 34.991399]
[ 34.991728] CPU: 0 PID: 47 Comm: kworker/0:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 34.993291] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 34.995576] Workqueue: cgroup_destroy css_free_rwork_fn
[ 34.996649] Call Trace:
[ 34.997164]
[ 34.997630] dump_stack_lvl+0x8b/0xb3
[ 34.998401] print_address_description.constprop.0+0x1f/0x180
[ 34.999578] ? up_write+0x3ac/0x460
[ 35.000314] ? up_write+0x3ac/0x460
[ 35.001046] kasan_report.cold+0x7f/0x11b
[ 35.001882] ? up_write+0x3ac/0x460
[ 35.002620] up_write+0x3ac/0x460
[ 35.003321] css_free_rwork_fn+0xa28/0xf40
[ 35.004175] process_one_work+0xa30/0x1710
[ 35.005043] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.005986] ? rwlock_bug.part.0+0x90/0x90
[ 35.006835] ? _raw_spin_lock_irq+0x41/0x50
[ 35.007700] worker_thread+0x62a/0x13e0
[ 35.008511] ? process_one_work+0x1710/0x1710
[ 35.009437] kthread+0x40c/0x500
[ 35.010115] ? set_kthread_struct+0x130/0x130
[ 35.011000] ret_from_fork+0x22/0x30
[ 35.011756]
[ 35.012228]
[ 35.012551] Allocated by task 283:
[ 35.013255] kasan_save_stack+0x1e/0x40
[ 35.014065] __kasan_kmalloc+0x81/0xa0
[ 35.014836] kernfs_create_root+0x4c/0x410
[ 35.015691] cgroup_setup_root+0x346/0xb60
[ 35.016538] cgroup1_get_tree+0xc1b/0x1370
[ 35.017398] vfs_get_tree+0x8e/0x2f0
[ 35.018145] path_mount+0x131b/0x1f80
[ 35.018911] __x64_sys_mount+0x27e/0x300
[ 35.019723] do_syscall_64+0x3b/0x90
[ 35.020469] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 35.021500]
[ 35.021823] Freed by task 47:
[ 35.022448] kasan_save_stack+0x1e/0x40
[ 35.023236] kasan_set_track+0x21/0x30
[ 35.024000] kasan_set_free_info+0x20/0x30
[ 35.024842] __kasan_slab_free+0x108/0x170
[ 35.025698] kfree+0xc5/0x5a0
[ 35.026316] kernfs_put.part.0+0x334/0x540
[ 35.027159] kernfs_put+0x42/0x50
[ 35.027841] __kernfs_remove+0x7ce/0xb00
[ 35.028651] kernfs_destroy_root+0x89/0xb0
[ 35.029506] css_free_rwork_fn+0xa28/0xf40
[ 35.030342] process_one_work+0xa30/0x1710
[ 35.031192] worker_thread+0x62a/0x13e0
[ 35.031994] kthread+0x40c/0x500
[ 35.032692] ret_from_fork+0x22/0x30
[ 35.033476]
[ 35.033794] The buggy address belongs to the object at ffff88800de45000
[ 35.033794] which belongs to the cache kmalloc-512 of size 512
[ 35.036242] The buggy address is located 320 bytes inside of
[ 35.036242] 512-byte region [ffff88800de45000, ffff88800de45200)
[ 35.038575] The buggy address belongs to the page:
[ 35.039567] page:000000008a25c444 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xde44
[ 35.041406] head:000000008a25c444 order:2 compound_mapcount:0 compound_pincount:0
[ 35.042859] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 35.043997] raw: 0100000000010200 dead000000000100 dead000000000122 ffff888007841c80
[ 35.045517] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
[ 35.047025] page dumped because: kasan: bad access detected
[ 35.048109]
[ 35.048423] Memory state around the buggy address:
[ 35.049370] ffff88800de45000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.050779] ffff88800de45080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.052182] >ffff88800de45100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.053601] ^
[ 35.054644] ffff88800de45180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.056049] ffff88800de45200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 35.057457] ==================================================================
[ 35.086457] cgroup: Unknown subsys name 'hugetlb'
[ 35.088811] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:32:16 Registers:
info registers vcpu 0
RAX=dffffc0000000060 RBX=00000000000003fd RCX=0000000000000000 RDX=00000000000003fd
RSI=ffffffff8236405c RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff88800ef775f0
R8 =0000000000000029 R9 =000000000000000a R10=ffffffff8234ae1b R11=000000000000000a
R12=0000000000000020 R13=fffffbfff0e70397 R14=fffffbfff0e7034e R15=dffffc0000000000
RIP=ffffffff823640b0 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=00007fc96fdc76d0 CR3=000000000dd66000 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 3f72ee4d9aecd338
YMM04=0000000000000000 0000000000000000 00007f08cfdfac00 0000000000415710
YMM05=0000000000000000 0000000000000000 0000000000000000 000000c00000e790
YMM06=0000000000000000 0000000000000000 0000000000505007 000000c0003c67c0
YMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM08=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM09=0000000000000000 0000000000000000 00000000004643c1 0000000000000000
YMM10=0000000000000000 0000000000000000 000000c00042fbe0 000000c00018ab00
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=000055f41b1c4230 CR3=000000000dd66000 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