Warning: Permanently added '[localhost]:1979' (ECDSA) to the list of known hosts.
2021/12/06 11:25:11 fuzzer started
2021/12/06 11:25:12 dialing manager at localhost:35719
2021/12/06 11:25:12 checking machine...
2021/12/06 11:25:12 checking revisions...
syzkaller login: [ 35.736048] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:25:12 testing simple program...
[ 35.775705] cgroup: Unknown subsys name 'net'
[ 35.776866] cgroup: Unknown subsys name 'net_prio'
[ 35.778564] cgroup: Unknown subsys name 'devices'
[ 35.779376] cgroup: Unknown subsys name 'blkio'
[ 35.810417]
[ 35.810726] =========================
[ 35.811221] WARNING: held lock freed!
[ 35.811700] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 35.812273] -------------------------
[ 35.812689] kworker/1:2/51 is freeing memory ffff88801beff800-ffff88801beff9ff, with a lock still held there!
[ 35.813778] ffff88801beff948 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.814863] 3 locks held by kworker/1:2/51:
[ 35.815371] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 35.816565] #1: ffff88800b5dfda8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 35.825603] #2: ffff88801beff948 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.826618]
[ 35.826618] stack backtrace:
[ 35.827101] CPU: 1 PID: 51 Comm: kworker/1:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.827949] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.829305] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.829896] Call Trace:
[ 35.830179]
[ 35.830429] dump_stack_lvl+0x8b/0xb3
[ 35.830850] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 35.831423] ? kernfs_put.part.0+0x334/0x540
[ 35.831913] kfree+0xb3/0x5a0
[ 35.832273] ? kmem_cache_free+0xce/0x640
[ 35.832743] kernfs_put.part.0+0x334/0x540
[ 35.833201] kernfs_put+0x42/0x50
[ 35.833581] __kernfs_remove+0x7ce/0xb00
[ 35.834030] ? lock_is_held_type+0xd7/0x130
[ 35.834502] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 35.835078] ? down_write+0xde/0x150
[ 35.835484] ? down_write_killable_nested+0x180/0x180
[ 35.836054] kernfs_destroy_root+0x89/0xb0
[ 35.844884] css_free_rwork_fn+0xa28/0xf40
[ 35.845364] process_one_work+0xa30/0x1710
[ 35.845838] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.846357] ? rwlock_bug.part.0+0x90/0x90
[ 35.846819] ? _raw_spin_lock_irq+0x41/0x50
[ 35.847295] worker_thread+0x62a/0x13e0
[ 35.847743] ? process_one_work+0x1710/0x1710
[ 35.848245] kthread+0x40c/0x500
[ 35.848637] ? set_kthread_struct+0x130/0x130
[ 35.849126] ret_from_fork+0x22/0x30
[ 35.849541]
[ 35.849932] ==================================================================
[ 35.850721] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 35.851370] Read of size 8 at addr ffff88801beff940 by task kworker/1:2/51
[ 35.852138]
[ 35.852337] CPU: 1 PID: 51 Comm: kworker/1:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.865033] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.866419] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.867079] Call Trace:
[ 35.867374]
[ 35.867618] dump_stack_lvl+0x8b/0xb3
[ 35.868038] print_address_description.constprop.0+0x1f/0x180
[ 35.868884] ? up_write+0x3ac/0x460
[ 35.869335] ? up_write+0x3ac/0x460
[ 35.869782] kasan_report.cold+0x7f/0x11b
[ 35.870250] ? up_write+0x3ac/0x460
[ 35.870661] up_write+0x3ac/0x460
[ 35.871091] css_free_rwork_fn+0xa28/0xf40
[ 35.871612] process_one_work+0xa30/0x1710
[ 35.872138] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.884709] ? rwlock_bug.part.0+0x90/0x90
[ 35.885178] ? _raw_spin_lock_irq+0x41/0x50
[ 35.885648] worker_thread+0x62a/0x13e0
[ 35.886088] ? process_one_work+0x1710/0x1710
[ 35.886583] kthread+0x40c/0x500
[ 35.886951] ? set_kthread_struct+0x130/0x130
[ 35.887476] ret_from_fork+0x22/0x30
[ 35.887891]
[ 35.888159]
[ 35.888359] Allocated by task 281:
[ 35.888747] kasan_save_stack+0x1e/0x40
[ 35.889184] __kasan_kmalloc+0x81/0xa0
[ 35.889607] kernfs_create_root+0x4c/0x410
[ 35.890081] cgroup_setup_root+0x346/0xb60
[ 35.890550] cgroup1_get_tree+0xc1b/0x1370
[ 35.891037] vfs_get_tree+0x8e/0x2f0
[ 35.891474] path_mount+0x131b/0x1f80
[ 35.891891] __x64_sys_mount+0x27e/0x300
[ 35.892360] do_syscall_64+0x3b/0x90
[ 35.892771] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 35.893343]
[ 35.893530] Freed by task 51:
[ 35.893868] kasan_save_stack+0x1e/0x40
[ 35.894309] kasan_set_track+0x21/0x30
[ 35.894733] kasan_set_free_info+0x20/0x30
[ 35.895211] __kasan_slab_free+0x108/0x170
[ 35.895682] kfree+0xc5/0x5a0
[ 35.896027] kernfs_put.part.0+0x334/0x540
[ 35.896551] kernfs_put+0x42/0x50
[ 35.896943] __kernfs_remove+0x7ce/0xb00
[ 35.897392] kernfs_destroy_root+0x89/0xb0
[ 35.897878] css_free_rwork_fn+0xa28/0xf40
[ 35.898339] process_one_work+0xa30/0x1710
[ 35.898800] worker_thread+0x62a/0x13e0
[ 35.899244] kthread+0x40c/0x500
[ 35.899647] ret_from_fork+0x22/0x30
[ 35.900053]
[ 35.900256] The buggy address belongs to the object at ffff88801beff800
[ 35.900256] which belongs to the cache kmalloc-512 of size 512
[ 35.901591] The buggy address is located 320 bytes inside of
[ 35.901591] 512-byte region [ffff88801beff800, ffff88801beffa00)
[ 35.902915] The buggy address belongs to the page:
[ 35.903493] page:00000000c6812cf2 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1befc
[ 35.916593] head:00000000c6812cf2 order:2 compound_mapcount:0 compound_pincount:0
[ 35.917435] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 35.918090] raw: 0100000000010200 0000000000000000 dead000000000001 ffff888007841c80
[ 35.918942] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
[ 35.919784] page dumped because: kasan: bad access detected
[ 35.920397]
[ 35.920580] Memory state around the buggy address:
[ 35.921111] ffff88801beff800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.921896] ffff88801beff880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.922691] >ffff88801beff900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.923485] ^
[ 35.924067] ffff88801beff980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.924885] ffff88801beffa00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 35.925664] ==================================================================
[ 35.962064] cgroup: Unknown subsys name 'hugetlb'
[ 35.965431] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:25:12 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=000055bfdb4d8dd0 CR3=000000001558a000 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 0000000000000000
YMM02=0000000000000000 0000000000000000 0000000000000000 410b5a0000000000
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
info registers vcpu 1
RAX=dffffc0000000060 RBX=00000000000003fd RCX=0000000000000000 RDX=00000000000003fd
RSI=ffffffff8236405c RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff88800b5df668
R8 =0000000000000041 R9 =0000000000000074 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 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=00007f3be0ff46d0 CR3=000000001558a000 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 410b5a0000000000
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