Warning: Permanently added '[localhost]:18704' (ECDSA) to the list of known hosts.
2021/12/06 11:36:01 fuzzer started
2021/12/06 11:36:01 dialing manager at localhost:35719
2021/12/06 11:36:01 checking machine...
2021/12/06 11:36:01 checking revisions...
syzkaller login: [ 35.500286] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:36:01 testing simple program...
[ 35.545432] cgroup: Unknown subsys name 'net'
[ 35.546866] cgroup: Unknown subsys name 'net_prio'
[ 35.548890] cgroup: Unknown subsys name 'devices'
[ 35.550718] cgroup: Unknown subsys name 'blkio'
[ 35.577121]
[ 35.577479] =========================
[ 35.578236] WARNING: held lock freed!
[ 35.578978] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 35.580114] -------------------------
[ 35.581358] kworker/1:3/188 is freeing memory ffff888015194000-ffff8880151941ff, with a lock still held there!
[ 35.583732] ffff888015194148 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.585561] 3 locks held by kworker/1:3/188:
[ 35.586451] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 35.588505] #1: ffff888017367da8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 35.590881] #2: ffff888015194148 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.592713]
[ 35.592713] stack backtrace:
[ 35.593600] CPU: 1 PID: 188 Comm: kworker/1:3 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.595165] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.597429] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.598510] Call Trace:
[ 35.599025]
[ 35.599463] dump_stack_lvl+0x8b/0xb3
[ 35.600219] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 35.601278] ? kernfs_put.part.0+0x334/0x540
[ 35.602158] kfree+0xb3/0x5a0
[ 35.602784] ? kmem_cache_free+0xce/0x640
[ 35.603768] kernfs_put.part.0+0x334/0x540
[ 35.604852] kernfs_put+0x42/0x50
[ 35.605757] __kernfs_remove+0x7ce/0xb00
[ 35.606697] ? lock_is_held_type+0xd7/0x130
[ 35.607566] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 35.608832] ? down_write+0xde/0x150
[ 35.609570] ? down_write_killable_nested+0x180/0x180
[ 35.610588] kernfs_destroy_root+0x89/0xb0
[ 35.611434] css_free_rwork_fn+0xa28/0xf40
[ 35.612270] process_one_work+0xa30/0x1710
[ 35.613127] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.614068] ? rwlock_bug.part.0+0x90/0x90
[ 35.614916] ? _raw_spin_lock_irq+0x41/0x50
[ 35.615775] worker_thread+0x62a/0x13e0
[ 35.616567] ? process_one_work+0x1710/0x1710
[ 35.617477] kthread+0x40c/0x500
[ 35.618158] ? set_kthread_struct+0x130/0x130
[ 35.619046] ret_from_fork+0x22/0x30
[ 35.619790]
[ 35.620302] ==================================================================
[ 35.621744] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 35.622941] Read of size 8 at addr ffff888015194140 by task kworker/1:3/188
[ 35.624324]
[ 35.624642] CPU: 1 PID: 188 Comm: kworker/1:3 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.626247] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.628451] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.629514] Call Trace:
[ 35.630037]
[ 35.630471] dump_stack_lvl+0x8b/0xb3
[ 35.631218] print_address_description.constprop.0+0x1f/0x180
[ 35.632355] ? up_write+0x3ac/0x460
[ 35.633087] ? up_write+0x3ac/0x460
[ 35.633811] kasan_report.cold+0x7f/0x11b
[ 35.634627] ? up_write+0x3ac/0x460
[ 35.635341] up_write+0x3ac/0x460
[ 35.636027] css_free_rwork_fn+0xa28/0xf40
[ 35.636860] process_one_work+0xa30/0x1710
[ 35.637733] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.638671] ? rwlock_bug.part.0+0x90/0x90
[ 35.639518] ? _raw_spin_lock_irq+0x41/0x50
[ 35.640377] worker_thread+0x62a/0x13e0
[ 35.641211] ? process_one_work+0x1710/0x1710
[ 35.642140] kthread+0x40c/0x500
[ 35.642828] ? set_kthread_struct+0x130/0x130
[ 35.643719] ret_from_fork+0x22/0x30
[ 35.644472]
[ 35.644950]
[ 35.645269] Allocated by task 281:
[ 35.645982] kasan_save_stack+0x1e/0x40
[ 35.646772] __kasan_kmalloc+0x81/0xa0
[ 35.647562] kernfs_create_root+0x4c/0x410
[ 35.648488] cgroup_setup_root+0x346/0xb60
[ 35.649361] cgroup1_get_tree+0xc1b/0x1370
[ 35.650210] vfs_get_tree+0x8e/0x2f0
[ 35.650966] path_mount+0x131b/0x1f80
[ 35.651718] __x64_sys_mount+0x27e/0x300
[ 35.652525] do_syscall_64+0x3b/0x90
[ 35.653275] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 35.654299]
[ 35.654615] Freed by task 188:
[ 35.655258] kasan_save_stack+0x1e/0x40
[ 35.656050] kasan_set_track+0x21/0x30
[ 35.656822] kasan_set_free_info+0x20/0x30
[ 35.657675] __kasan_slab_free+0x108/0x170
[ 35.658515] kfree+0xc5/0x5a0
[ 35.659151] kernfs_put.part.0+0x334/0x540
[ 35.659998] kernfs_put+0x42/0x50
[ 35.660675] __kernfs_remove+0x7ce/0xb00
[ 35.661507] kernfs_destroy_root+0x89/0xb0
[ 35.662346] css_free_rwork_fn+0xa28/0xf40
[ 35.663209] process_one_work+0xa30/0x1710
[ 35.664063] worker_thread+0x62a/0x13e0
[ 35.664858] kthread+0x40c/0x500
[ 35.665529] ret_from_fork+0x22/0x30
[ 35.666270]
[ 35.666593] The buggy address belongs to the object at ffff888015194000
[ 35.666593] which belongs to the cache kmalloc-512 of size 512
[ 35.669086] The buggy address is located 320 bytes inside of
[ 35.669086] 512-byte region [ffff888015194000, ffff888015194200)
[ 35.671391] The buggy address belongs to the page:
[ 35.672343] page:00000000d34ce35c refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x15194
[ 35.674188] head:00000000d34ce35c order:2 compound_mapcount:0 compound_pincount:0
[ 35.675684] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 35.676861] raw: 0100000000010200 0000000000000000 dead000000000001 ffff888007841c80
[ 35.678370] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
[ 35.679901] page dumped because: kasan: bad access detected
[ 35.681030]
[ 35.681346] Memory state around the buggy address:
[ 35.682301] ffff888015194000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.683736] ffff888015194080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.685190] >ffff888015194100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.686603] ^
[ 35.687700] ffff888015194180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.689148] ffff888015194200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 35.690556] ==================================================================
[ 35.715701] cgroup: Unknown subsys name 'hugetlb'
[ 35.717480] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:36:01 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=0000563520171928 CR3=000000000fb18000 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=00001f80
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 7465677261742e79 636e656772656d65
YMM02=0000000000000000 0000000000000000 ffffffffffffffff ffffffffffffffff
YMM03=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM04=0000000000000000 0000000000000000 2f2f2f2f2f2f2f2f 2f2f2f2f2f2f2f2f
YMM05=0000000000000000 0000000000000000 6633353937322d35 3330382d63653934
YMM06=0000000000000000 0000000000000000 0000000000000000 6c6562616c636573
YMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM08=0000000000000000 0000000000000000 6665646362613938 3736353433323130
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=0000000000000031 RBX=00000000000003f8 RCX=0000000000000000 RDX=00000000000003f8
RSI=ffffffff823640e1 RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff888017367648
R8 =0000000000000000 R9 =0000000000000031 R10=ffffffff82365d23 R11=000000000000000a
R12=0000000000000031 R13=0000000000000031 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 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=00007ffca394e000 CR3=000000000dcba000 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