Warning: Permanently added '[localhost]:21816' (ECDSA) to the list of known hosts.
2021/12/06 11:36:47 fuzzer started
2021/12/06 11:36:47 dialing manager at localhost:35719
2021/12/06 11:36:47 checking machine...
2021/12/06 11:36:47 checking revisions...
syzkaller login: [ 34.564623] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:36:47 testing simple program...
[ 34.597714] cgroup: Unknown subsys name 'net'
[ 34.598925] cgroup: Unknown subsys name 'net_prio'
[ 34.601095] cgroup: Unknown subsys name 'devices'
[ 34.602093] cgroup: Unknown subsys name 'blkio'
[ 34.620066]
[ 34.620348] =========================
[ 34.620852] WARNING: held lock freed!
[ 34.621353] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 34.622039] -------------------------
[ 34.622603] kworker/1:0/18 is freeing memory ffff88800dbd0000-ffff88800dbd01ff, with a lock still held there!
[ 34.624752] ffff88800dbd0148 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 34.626519] 3 locks held by kworker/1:0/18:
[ 34.627092] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 34.628376] #1: ffff88800823fda8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 34.629813] #2: ffff88800dbd0148 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 34.630989]
[ 34.630989] stack backtrace:
[ 34.631530] CPU: 1 PID: 18 Comm: kworker/1:0 Not tainted 5.16.0-rc3-next-20211203 #1
[ 34.632486] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 34.633853] Workqueue: cgroup_destroy css_free_rwork_fn
[ 34.634531] Call Trace:
[ 34.634839]
[ 34.635110] dump_stack_lvl+0x8b/0xb3
[ 34.635594] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 34.636225] ? kernfs_put.part.0+0x334/0x540
[ 34.636747] kfree+0xb3/0x5a0
[ 34.637125] ? kmem_cache_free+0xce/0x640
[ 34.637628] kernfs_put.part.0+0x334/0x540
[ 34.638151] kernfs_put+0x42/0x50
[ 34.638591] __kernfs_remove+0x7ce/0xb00
[ 34.639087] ? lock_is_held_type+0xd7/0x130
[ 34.639626] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 34.640247] ? down_write+0xde/0x150
[ 34.640703] ? down_write_killable_nested+0x180/0x180
[ 34.641342] kernfs_destroy_root+0x89/0xb0
[ 34.641867] css_free_rwork_fn+0xa28/0xf40
[ 34.642394] process_one_work+0xa30/0x1710
[ 34.642960] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 34.643536] ? rwlock_bug.part.0+0x90/0x90
[ 34.644049] ? _raw_spin_lock_irq+0x41/0x50
[ 34.644598] worker_thread+0x62a/0x13e0
[ 34.645114] ? process_one_work+0x1710/0x1710
[ 34.645679] kthread+0x40c/0x500
[ 34.646117] ? set_kthread_struct+0x130/0x130
[ 34.646737] ret_from_fork+0x22/0x30
[ 34.647214]
[ 34.647663] ==================================================================
[ 34.648609] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 34.649427] Read of size 8 at addr ffff88800dbd0140 by task kworker/1:0/18
[ 34.650388]
[ 34.650639] CPU: 1 PID: 18 Comm: kworker/1:0 Not tainted 5.16.0-rc3-next-20211203 #1
[ 34.651735] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 34.653224] Workqueue: cgroup_destroy css_free_rwork_fn
[ 34.653915] Call Trace:
[ 34.654257]
[ 34.654610] dump_stack_lvl+0x8b/0xb3
[ 34.655140] print_address_description.constprop.0+0x1f/0x180
[ 34.655898] ? up_write+0x3ac/0x460
[ 34.656387] ? up_write+0x3ac/0x460
[ 34.656859] kasan_report.cold+0x7f/0x11b
[ 34.657411] ? up_write+0x3ac/0x460
[ 34.657894] up_write+0x3ac/0x460
[ 34.658352] css_free_rwork_fn+0xa28/0xf40
[ 34.658933] process_one_work+0xa30/0x1710
[ 34.659484] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 34.660080] ? rwlock_bug.part.0+0x90/0x90
[ 34.660631] ? _raw_spin_lock_irq+0x41/0x50
[ 34.661194] worker_thread+0x62a/0x13e0
[ 34.661716] ? process_one_work+0x1710/0x1710
[ 34.662312] kthread+0x40c/0x500
[ 34.662761] ? set_kthread_struct+0x130/0x130
[ 34.663452] ret_from_fork+0x22/0x30
[ 34.664075]
[ 34.664521]
[ 34.664767] Allocated by task 281:
[ 34.665264] kasan_save_stack+0x1e/0x40
[ 34.665843] __kasan_kmalloc+0x81/0xa0
[ 34.666416] kernfs_create_root+0x4c/0x410
[ 34.667002] cgroup_setup_root+0x346/0xb60
[ 34.667561] cgroup1_get_tree+0xc1b/0x1370
[ 34.668136] vfs_get_tree+0x8e/0x2f0
[ 34.668624] path_mount+0x131b/0x1f80
[ 34.669118] __x64_sys_mount+0x27e/0x300
[ 34.669649] do_syscall_64+0x3b/0x90
[ 34.670147] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 34.670845]
[ 34.671061] Freed by task 18:
[ 34.671472] kasan_save_stack+0x1e/0x40
[ 34.672001] kasan_set_track+0x21/0x30
[ 34.672561] kasan_set_free_info+0x20/0x30
[ 34.673222] __kasan_slab_free+0x108/0x170
[ 34.673892] kfree+0xc5/0x5a0
[ 34.674418] kernfs_put.part.0+0x334/0x540
[ 34.675060] kernfs_put+0x42/0x50
[ 34.675575] __kernfs_remove+0x7ce/0xb00
[ 34.676164] kernfs_destroy_root+0x89/0xb0
[ 34.676798] css_free_rwork_fn+0xa28/0xf40
[ 34.677439] process_one_work+0xa30/0x1710
[ 34.678062] worker_thread+0x62a/0x13e0
[ 34.678628] kthread+0x40c/0x500
[ 34.679064] ret_from_fork+0x22/0x30
[ 34.679559]
[ 34.679798] The buggy address belongs to the object at ffff88800dbd0000
[ 34.679798] which belongs to the cache kmalloc-512 of size 512
[ 34.681580] The buggy address is located 320 bytes inside of
[ 34.681580] 512-byte region [ffff88800dbd0000, ffff88800dbd0200)
[ 34.683793] The buggy address belongs to the page:
[ 34.684552] page:0000000042a4ff78 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800dbd2800 pfn:0xdbd0
[ 34.686241] head:0000000042a4ff78 order:2 compound_mapcount:0 compound_pincount:0
[ 34.687348] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 34.688162] raw: 0100000000010200 0000000000000000 dead000000000001 ffff888007841c80
[ 34.689230] raw: ffff88800dbd2800 000000008010000f 00000001ffffffff 0000000000000000
[ 34.690259] page dumped because: kasan: bad access detected
[ 34.691057]
[ 34.691286] Memory state around the buggy address:
[ 34.691954] ffff88800dbd0000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.692945] ffff88800dbd0080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.694053] >ffff88800dbd0100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.695113] ^
[ 34.695818] ffff88800dbd0180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.696789] ffff88800dbd0200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 34.697708] ==================================================================
[ 34.736694] cgroup: Unknown subsys name 'hugetlb'
[ 34.737926] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:36:48 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=00005650c1b22560 CR3=000000000d97e000 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 0f0e0d0c0b0a0908
YMM03=0000000000000000 0000000000000000 0000000000000073 66626c7465677568
YMM04=0000000000000000 0000000000000000 2e2e2e2e2e2e2e2e 2e2e2e2e2e2e2e2e
YMM05=0000000000000000 0000000000000000 6633353937322d35 3330382d63653934
YMM06=0000000000000000 0000000000000000 0000000000000000 6c6562616c636573
YMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM08=0000000000000000 0000000000000000 6564636261393837 3635343332313040
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=000000000000006b RBX=00000000000003f8 RCX=0000000000000000 RDX=00000000000003f8
RSI=ffffffff823640e1 RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff88800823f648
R8 =0000000000000000 R9 =000000000000006b R10=ffffffff82365d23 R11=000000000000000a
R12=000000000000006b R13=000000000000006b 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=00007ffed0573000 CR3=000000000eac8000 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=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 0000000000000000 0000000000000000
YMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM03=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM04=0000000000000000 0000000000000000 ffffffffffffffff ffffffffffffffff
YMM05=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM06=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000
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