Warning: Permanently added '[localhost]:6707' (ECDSA) to the list of known hosts.
2021/12/06 11:25:40 fuzzer started
2021/12/06 11:25:40 dialing manager at localhost:35719
2021/12/06 11:25:40 checking machine...
2021/12/06 11:25:40 checking revisions...
syzkaller login: [ 34.385901] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:25:40 testing simple program...
[ 34.446225] cgroup: Unknown subsys name 'net'
[ 34.447395] cgroup: Unknown subsys name 'net_prio'
[ 34.448925] cgroup: Unknown subsys name 'devices'
[ 34.450493] cgroup: Unknown subsys name 'blkio'
[ 34.473328]
[ 34.473598] =========================
[ 34.474108] WARNING: held lock freed!
[ 34.474551] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 34.475195] -------------------------
[ 34.475629] kworker/1:0/18 is freeing memory ffff88800e3c8000-ffff88800e3c81ff, with a lock still held there!
[ 34.476796] ffff88800e3c8148 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 34.477941] 3 locks held by kworker/1:0/18:
[ 34.478485] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 34.479774] #1: ffff88800823fda8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 34.481229] #2: ffff88800e3c8148 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 34.482426]
[ 34.482426] stack backtrace:
[ 34.483096] CPU: 1 PID: 18 Comm: kworker/1:0 Not tainted 5.16.0-rc3-next-20211203 #1
[ 34.485128] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 34.488337] Workqueue: cgroup_destroy css_free_rwork_fn
[ 34.489725] Call Trace:
[ 34.490616]
[ 34.491179] dump_stack_lvl+0x8b/0xb3
[ 34.492162] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 34.493494] ? kernfs_put.part.0+0x334/0x540
[ 34.494722] kfree+0xb3/0x5a0
[ 34.495542] ? kmem_cache_free+0xce/0x640
[ 34.496667] kernfs_put.part.0+0x334/0x540
[ 34.497878] kernfs_put+0x42/0x50
[ 34.498803] __kernfs_remove+0x7ce/0xb00
[ 34.499887] ? lock_is_held_type+0xd7/0x130
[ 34.501014] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 34.502592] ? down_write+0xde/0x150
[ 34.503105] ? down_write_killable_nested+0x180/0x180
[ 34.503619] kernfs_destroy_root+0x89/0xb0
[ 34.504046] css_free_rwork_fn+0xa28/0xf40
[ 34.504453] process_one_work+0xa30/0x1710
[ 34.504895] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 34.505337] ? rwlock_bug.part.0+0x90/0x90
[ 34.505826] ? _raw_spin_lock_irq+0x41/0x50
[ 34.506473] worker_thread+0x62a/0x13e0
[ 34.507087] ? process_one_work+0x1710/0x1710
[ 34.507677] kthread+0x40c/0x500
[ 34.508125] ? set_kthread_struct+0x130/0x130
[ 34.508731] ret_from_fork+0x22/0x30
[ 34.509146]
[ 34.509482] ==================================================================
[ 34.510731] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 34.511549] Read of size 8 at addr ffff88800e3c8140 by task kworker/1:0/18
[ 34.512479]
[ 34.512718] CPU: 1 PID: 18 Comm: kworker/1:0 Not tainted 5.16.0-rc3-next-20211203 #1
[ 34.513720] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 34.515054] Workqueue: cgroup_destroy css_free_rwork_fn
[ 34.515660] Call Trace:
[ 34.515949]
[ 34.516204] dump_stack_lvl+0x8b/0xb3
[ 34.516640] print_address_description.constprop.0+0x1f/0x180
[ 34.517299] ? up_write+0x3ac/0x460
[ 34.517711] ? up_write+0x3ac/0x460
[ 34.518341] kasan_report.cold+0x7f/0x11b
[ 34.518820] ? up_write+0x3ac/0x460
[ 34.519229] up_write+0x3ac/0x460
[ 34.519624] css_free_rwork_fn+0xa28/0xf40
[ 34.520106] process_one_work+0xa30/0x1710
[ 34.520585] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 34.521116] ? rwlock_bug.part.0+0x90/0x90
[ 34.521590] ? _raw_spin_lock_irq+0x41/0x50
[ 34.522196] worker_thread+0x62a/0x13e0
[ 34.522655] ? process_one_work+0x1710/0x1710
[ 34.523162] kthread+0x40c/0x500
[ 34.523542] ? set_kthread_struct+0x130/0x130
[ 34.524048] ret_from_fork+0x22/0x30
[ 34.524477]
[ 34.524737]
[ 34.524921] Allocated by task 282:
[ 34.525352] kasan_save_stack+0x1e/0x40
[ 34.526070] __kasan_kmalloc+0x81/0xa0
[ 34.526561] kernfs_create_root+0x4c/0x410
[ 34.527109] cgroup_setup_root+0x346/0xb60
[ 34.527696] cgroup1_get_tree+0xc1b/0x1370
[ 34.528242] vfs_get_tree+0x8e/0x2f0
[ 34.528718] path_mount+0x131b/0x1f80
[ 34.529208] __x64_sys_mount+0x27e/0x300
[ 34.529723] do_syscall_64+0x3b/0x90
[ 34.530193] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 34.530828]
[ 34.531036] Freed by task 18:
[ 34.531424] kasan_save_stack+0x1e/0x40
[ 34.531925] kasan_set_track+0x21/0x30
[ 34.532423] kasan_set_free_info+0x20/0x30
[ 34.532965] __kasan_slab_free+0x108/0x170
[ 34.533520] kfree+0xc5/0x5a0
[ 34.533932] kernfs_put.part.0+0x334/0x540
[ 34.534414] kernfs_put+0x42/0x50
[ 34.534804] __kernfs_remove+0x7ce/0xb00
[ 34.535258] kernfs_destroy_root+0x89/0xb0
[ 34.535737] css_free_rwork_fn+0xa28/0xf40
[ 34.536212] process_one_work+0xa30/0x1710
[ 34.536690] worker_thread+0x62a/0x13e0
[ 34.537136] kthread+0x40c/0x500
[ 34.537515] ret_from_fork+0x22/0x30
[ 34.537967]
[ 34.538155] The buggy address belongs to the object at ffff88800e3c8000
[ 34.538155] which belongs to the cache kmalloc-512 of size 512
[ 34.539562] The buggy address is located 320 bytes inside of
[ 34.539562] 512-byte region [ffff88800e3c8000, ffff88800e3c8200)
[ 34.540883] The buggy address belongs to the page:
[ 34.541434] page:00000000915349dd refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe3c8
[ 34.542538] head:00000000915349dd order:2 compound_mapcount:0 compound_pincount:0
[ 34.543399] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 34.544073] raw: 0100000000010200 0000000000000000 dead000000000001 ffff888007841c80
[ 34.544962] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
[ 34.545860] page dumped because: kasan: bad access detected
[ 34.546487]
[ 34.546674] Memory state around the buggy address:
[ 34.547216] ffff88800e3c8000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.548026] ffff88800e3c8080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.548835] >ffff88800e3c8100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.549641] ^
[ 34.550273] ffff88800e3c8180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.551090] ffff88800e3c8200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 34.551890] ==================================================================
[ 34.590093] cgroup: Unknown subsys name 'hugetlb'
[ 34.590801] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:25:41 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=000055698c9a56b6 CR3=000000000c7d4000 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 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
info registers vcpu 1
RAX=dffffc0000000060 RBX=00000000000003fd RCX=0000000000000000 RDX=00000000000003fd
RSI=ffffffff8236405c RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff88800823f668
R8 =000000000000002f R9 =000000000000005f 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=00007fe234b69020 CR3=000000000c7d4000 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