Warning: Permanently added '[localhost]:18160' (ECDSA) to the list of known hosts.
2021/12/06 11:32:34 fuzzer started
2021/12/06 11:32:34 dialing manager at localhost:35719
2021/12/06 11:32:34 checking machine...
2021/12/06 11:32:34 checking revisions...
syzkaller login: [ 36.501539] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:32:35 testing simple program...
[ 36.545467] cgroup: Unknown subsys name 'net'
[ 36.547547] cgroup: Unknown subsys name 'net_prio'
[ 36.549906] cgroup: Unknown subsys name 'devices'
[ 36.552031] cgroup: Unknown subsys name 'blkio'
[ 36.584733]
[ 36.585113] =========================
[ 36.585843] WARNING: held lock freed!
[ 36.586727] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 36.588058] -------------------------
[ 36.589658] kworker/1:2/82 is freeing memory ffff88800cf35400-ffff88800cf355ff, with a lock still held there!
[ 36.591984] ffff88800cf35548 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 36.594058] 3 locks held by kworker/1:2/82:
[ 36.595060] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 36.597361] #1: ffff88800f987da8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 36.599649] #2: ffff88800cf35548 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 36.601452]
[ 36.601452] stack backtrace:
[ 36.602300] CPU: 1 PID: 82 Comm: kworker/1:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 36.603803] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 36.606005] Workqueue: cgroup_destroy css_free_rwork_fn
[ 36.607047] Call Trace:
[ 36.607544]
[ 36.607989] dump_stack_lvl+0x8b/0xb3
[ 36.608726] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 36.609749] ? kernfs_put.part.0+0x334/0x540
[ 36.610602] kfree+0xb3/0x5a0
[ 36.611204] ? kmem_cache_free+0xce/0x640
[ 36.612012] kernfs_put.part.0+0x334/0x540
[ 36.612834] kernfs_put+0x42/0x50
[ 36.613502] __kernfs_remove+0x7ce/0xb00
[ 36.614284] ? lock_is_held_type+0xd7/0x130
[ 36.615130] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 36.616152] ? down_write+0xde/0x150
[ 36.616872] ? down_write_killable_nested+0x180/0x180
[ 36.617874] kernfs_destroy_root+0x89/0xb0
[ 36.618691] css_free_rwork_fn+0xa28/0xf40
[ 36.619515] process_one_work+0xa30/0x1710
[ 36.620364] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 36.621271] ? rwlock_bug.part.0+0x90/0x90
[ 36.622092] ? _raw_spin_lock_irq+0x41/0x50
[ 36.622936] worker_thread+0x62a/0x13e0
[ 36.623713] ? process_one_work+0x1710/0x1710
[ 36.624595] kthread+0x40c/0x500
[ 36.625252] ? set_kthread_struct+0x130/0x130
[ 36.626115] ret_from_fork+0x22/0x30
[ 36.626839]
[ 36.627377] ==================================================================
[ 36.628797] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 36.629937] Read of size 8 at addr ffff88800cf35540 by task kworker/1:2/82
[ 36.631270]
[ 36.631583] CPU: 1 PID: 82 Comm: kworker/1:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 36.633113] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 36.635291] Workqueue: cgroup_destroy css_free_rwork_fn
[ 36.636343] Call Trace:
[ 36.636837]
[ 36.637293] dump_stack_lvl+0x8b/0xb3
[ 36.638031] print_address_description.constprop.0+0x1f/0x180
[ 36.639160] ? up_write+0x3ac/0x460
[ 36.639866] ? up_write+0x3ac/0x460
[ 36.640561] kasan_report.cold+0x7f/0x11b
[ 36.641365] ? up_write+0x3ac/0x460
[ 36.642063] up_write+0x3ac/0x460
[ 36.642729] css_free_rwork_fn+0xa28/0xf40
[ 36.643547] process_one_work+0xa30/0x1710
[ 36.644385] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 36.645289] ? rwlock_bug.part.0+0x90/0x90
[ 36.646100] ? _raw_spin_lock_irq+0x41/0x50
[ 36.646931] worker_thread+0x62a/0x13e0
[ 36.647701] ? process_one_work+0x1710/0x1710
[ 36.648580] kthread+0x40c/0x500
[ 36.649230] ? set_kthread_struct+0x130/0x130
[ 36.650089] ret_from_fork+0x22/0x30
[ 36.650810]
[ 36.651253]
[ 36.651563] Allocated by task 281:
[ 36.652243] kasan_save_stack+0x1e/0x40
[ 36.653007] __kasan_kmalloc+0x81/0xa0
[ 36.653753] kernfs_create_root+0x4c/0x410
[ 36.654566] cgroup_setup_root+0x346/0xb60
[ 36.655378] cgroup1_get_tree+0xc1b/0x1370
[ 36.656208] vfs_get_tree+0x8e/0x2f0
[ 36.656924] path_mount+0x131b/0x1f80
[ 36.657659] __x64_sys_mount+0x27e/0x300
[ 36.658438] do_syscall_64+0x3b/0x90
[ 36.659151] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 36.660147]
[ 36.660462] Freed by task 82:
[ 36.661053] kasan_save_stack+0x1e/0x40
[ 36.661815] kasan_set_track+0x21/0x30
[ 36.662560] kasan_set_free_info+0x20/0x30
[ 36.663377] __kasan_slab_free+0x108/0x170
[ 36.664194] kfree+0xc5/0x5a0
[ 36.664791] kernfs_put.part.0+0x334/0x540
[ 36.665605] kernfs_put+0x42/0x50
[ 36.666266] __kernfs_remove+0x7ce/0xb00
[ 36.667047] kernfs_destroy_root+0x89/0xb0
[ 36.667872] css_free_rwork_fn+0xa28/0xf40
[ 36.668684] process_one_work+0xa30/0x1710
[ 36.669495] worker_thread+0x62a/0x13e0
[ 36.670257] kthread+0x40c/0x500
[ 36.670903] ret_from_fork+0x22/0x30
[ 36.671616]
[ 36.671933] The buggy address belongs to the object at ffff88800cf35400
[ 36.671933] which belongs to the cache kmalloc-512 of size 512
[ 36.674306] The buggy address is located 320 bytes inside of
[ 36.674306] 512-byte region [ffff88800cf35400, ffff88800cf35600)
[ 36.676553] The buggy address belongs to the page:
[ 36.677477] page:00000000d1a44f4b refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xcf34
[ 36.679238] head:00000000d1a44f4b order:2 compound_mapcount:0 compound_pincount:0
[ 36.680676] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 36.681798] raw: 0100000000010200 dead000000000100 dead000000000122 ffff888007841c80
[ 36.683288] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
[ 36.684770] page dumped because: kasan: bad access detected
[ 36.685851]
[ 36.686161] Memory state around the buggy address:
[ 36.687091] ffff88800cf35400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.688489] ffff88800cf35480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.689872] >ffff88800cf35500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.691251] ^
[ 36.692288] ffff88800cf35580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.693676] ffff88800cf35600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 36.695055] ==================================================================
[ 36.737646] cgroup: Unknown subsys name 'hugetlb'
[ 36.740879] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:32:35 Registers:
info registers vcpu 0
RAX=0000000080000001 RBX=0000000000000001 RCX=1ffffffff0db16f0 RDX=0000000000000000
RSI=ffff88807ffdc000 RDI=0000000000000001 RBP=ffff88800d8bf400 RSP=ffff88800812f9b0
R8 =ffff888017d5b600 R9 =0000000080100009 R10=0000000000000000 R11=0000000000000000
R12=ffff88807ffdc000 R13=0000000000000006 R14=00000000fffffef8 R15=ffff888008049b40
RIP=ffffffff811f305a RFL=00000246 [---Z-P-] 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 00007f84a3e7b900 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=00007f94b9fca300 CR3=00000000093ea000 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 2d312e31303a3030 3a303030302d6963
YMM06=0000000000000000 0000000000000000 0000000000000021 0000000000000000
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=dffffc0000000060 RBX=00000000000003fd RCX=0000000000000000 RDX=00000000000003fd
RSI=ffffffff8236405c RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff88800f9875f0
R8 =0000000000000029 R9 =000000000000002d 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=00007f94ba061000 CR3=0000000009066000 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 40fc670000000000
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