Warning: Permanently added '[localhost]:34160' (ECDSA) to the list of known hosts.
2021/12/06 11:33:44 fuzzer started
2021/12/06 11:33:44 dialing manager at localhost:35719
2021/12/06 11:33:44 checking machine...
2021/12/06 11:33:44 checking revisions...
syzkaller login: [ 35.964152] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:33:44 testing simple program...
[ 36.005295] cgroup: Unknown subsys name 'net'
[ 36.006790] cgroup: Unknown subsys name 'net_prio'
[ 36.008020] cgroup: Unknown subsys name 'devices'
[ 36.009266] cgroup: Unknown subsys name 'blkio'
[ 36.036336]
[ 36.036704] =========================
[ 36.037446] WARNING: held lock freed!
[ 36.038173] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 36.039305] -------------------------
[ 36.040437] kworker/0:2/47 is freeing memory ffff88800d57dc00-ffff88800d57ddff, with a lock still held there!
[ 36.042765] ffff88800d57dd48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 36.044552] 3 locks held by kworker/0:2/47:
[ 36.045420] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 36.047476] #1: ffff88800b72fda8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 36.049788] #2: ffff88800d57dd48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 36.051624]
[ 36.051624] stack backtrace:
[ 36.052608] CPU: 0 PID: 47 Comm: kworker/0:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 36.054369] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 36.056581] Workqueue: cgroup_destroy css_free_rwork_fn
[ 36.057620] Call Trace:
[ 36.058115]
[ 36.058558] dump_stack_lvl+0x8b/0xb3
[ 36.059300] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 36.060320] ? kernfs_put.part.0+0x334/0x540
[ 36.061176] kfree+0xb3/0x5a0
[ 36.061777] ? kmem_cache_free+0xce/0x640
[ 36.062590] kernfs_put.part.0+0x334/0x540
[ 36.063408] kernfs_put+0x42/0x50
[ 36.064074] __kernfs_remove+0x7ce/0xb00
[ 36.064858] ? lock_is_held_type+0xd7/0x130
[ 36.065687] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 36.066709] ? down_write+0xde/0x150
[ 36.067419] ? down_write_killable_nested+0x180/0x180
[ 36.068408] kernfs_destroy_root+0x89/0xb0
[ 36.069216] css_free_rwork_fn+0xa28/0xf40
[ 36.070030] process_one_work+0xa30/0x1710
[ 36.070857] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 36.071754] ? rwlock_bug.part.0+0x90/0x90
[ 36.072568] ? _raw_spin_lock_irq+0x41/0x50
[ 36.073398] worker_thread+0x62a/0x13e0
[ 36.074167] ? process_one_work+0x1710/0x1710
[ 36.075042] kthread+0x40c/0x500
[ 36.075695] ? set_kthread_struct+0x130/0x130
[ 36.076555] ret_from_fork+0x22/0x30
[ 36.077279]
[ 36.077805] ==================================================================
[ 36.079197] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 36.080326] Read of size 8 at addr ffff88800d57dd40 by task kworker/0:2/47
[ 36.081646]
[ 36.081956] CPU: 0 PID: 47 Comm: kworker/0:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 36.083446] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 36.085619] Workqueue: cgroup_destroy css_free_rwork_fn
[ 36.086660] Call Trace:
[ 36.087151]
[ 36.087579] dump_stack_lvl+0x8b/0xb3
[ 36.088316] print_address_description.constprop.0+0x1f/0x180
[ 36.089441] ? up_write+0x3ac/0x460
[ 36.090134] ? up_write+0x3ac/0x460
[ 36.090840] kasan_report.cold+0x7f/0x11b
[ 36.091642] ? up_write+0x3ac/0x460
[ 36.092339] up_write+0x3ac/0x460
[ 36.093008] css_free_rwork_fn+0xa28/0xf40
[ 36.093828] process_one_work+0xa30/0x1710
[ 36.094663] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 36.095561] ? rwlock_bug.part.0+0x90/0x90
[ 36.096372] ? _raw_spin_lock_irq+0x41/0x50
[ 36.097207] worker_thread+0x62a/0x13e0
[ 36.097980] ? process_one_work+0x1710/0x1710
[ 36.098850] kthread+0x40c/0x500
[ 36.099503] ? set_kthread_struct+0x130/0x130
[ 36.100363] ret_from_fork+0x22/0x30
[ 36.101086]
[ 36.101530]
[ 36.101841] Allocated by task 281:
[ 36.102522] kasan_save_stack+0x1e/0x40
[ 36.103289] __kasan_kmalloc+0x81/0xa0
[ 36.104034] kernfs_create_root+0x4c/0x410
[ 36.104843] cgroup_setup_root+0x346/0xb60
[ 36.105654] cgroup1_get_tree+0xc1b/0x1370
[ 36.106466] vfs_get_tree+0x8e/0x2f0
[ 36.107194] path_mount+0x131b/0x1f80
[ 36.107925] __x64_sys_mount+0x27e/0x300
[ 36.108706] do_syscall_64+0x3b/0x90
[ 36.109420] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 36.110406]
[ 36.110736] Freed by task 47:
[ 36.111327] kasan_save_stack+0x1e/0x40
[ 36.112087] kasan_set_track+0x21/0x30
[ 36.112831] kasan_set_free_info+0x20/0x30
[ 36.113643] __kasan_slab_free+0x108/0x170
[ 36.114454] kfree+0xc5/0x5a0
[ 36.115056] kernfs_put.part.0+0x334/0x540
[ 36.115871] kernfs_put+0x42/0x50
[ 36.116533] __kernfs_remove+0x7ce/0xb00
[ 36.117306] kernfs_destroy_root+0x89/0xb0
[ 36.118116] css_free_rwork_fn+0xa28/0xf40
[ 36.118937] process_one_work+0xa30/0x1710
[ 36.119751] worker_thread+0x62a/0x13e0
[ 36.120513] kthread+0x40c/0x500
[ 36.121158] ret_from_fork+0x22/0x30
[ 36.121871]
[ 36.122181] The buggy address belongs to the object at ffff88800d57dc00
[ 36.122181] which belongs to the cache kmalloc-512 of size 512
[ 36.124570] The buggy address is located 320 bytes inside of
[ 36.124570] 512-byte region [ffff88800d57dc00, ffff88800d57de00)
[ 36.126844] The buggy address belongs to the page:
[ 36.127784] page:000000004373bfa3 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xd57c
[ 36.129573] head:000000004373bfa3 order:2 compound_mapcount:0 compound_pincount:0
[ 36.131043] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 36.132189] raw: 0100000000010200 dead000000000100 dead000000000122 ffff888007841c80
[ 36.133694] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
[ 36.135196] page dumped because: kasan: bad access detected
[ 36.136280]
[ 36.136598] Memory state around the buggy address:
[ 36.137534] ffff88800d57dc00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.138945] ffff88800d57dc80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.140346] >ffff88800d57dd00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.141735] ^
[ 36.143074] ffff88800d57dd80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.144484] ffff88800d57de00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 36.145880] ==================================================================
[ 36.186342] cgroup: Unknown subsys name 'hugetlb'
[ 36.187824] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:33:45 Registers:
info registers vcpu 0
RAX=000000000000002d RBX=00000000000003f8 RCX=0000000000000000 RDX=00000000000003f8
RSI=ffffffff823640e1 RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff88800b72f648
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=00007ffc47934ff8 CR3=000000000cf3a000 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 41545b168b960acf
YMM01=0000000000000000 0000000000000000 0000000000000000 3f847ae147ae147b
YMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM03=0000000000000000 0000000000000000 0000000000000000 3f7428022417abe8
YMM04=0000000000000000 0000000000000000 6174736e69206572 6120737265646165
YMM05=0000000000000000 0000000000000000 613c206564756c63 6e69230a64656c6c
YMM06=0000000000000000 0000000000000000 736e65202f2f203e 6d687469726f676c
YMM07=0000000000000000 0000000000000000 6568202b2b432074 6168742073657275
YMM08=0000000000000000 0000000000000000 736e692065726120 7372656461656820
YMM09=0000000000000000 0000000000000000 206564756c636e69 230a64656c6c6174
YMM10=0000000000000000 0000000000000000 65202f2f203e6d68 7469726f676c613c
YMM11=0000000000000000 0000000000000000 202b2b4320746168 742073657275736e
YMM12=0000000000000000 0000000000000000 74736e6920657261 2073726564616568
YMM13=0000000000000000 0000000000000000 29286e69616d2074 6e690a64656c6c61
YMM14=0000000000000000 0000000000000000 6f6c6c6548222866 746e697270207b20
YMM15=0000000000000000 0000000000000000 0a7d203b29226e5c 21646c726f57202c
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=00007f5531ad0000 CR3=000000000cf3a000 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