Warning: Permanently added '[localhost]:63982' (ECDSA) to the list of known hosts.
2021/12/06 11:24:38 fuzzer started
2021/12/06 11:24:38 dialing manager at localhost:35719
2021/12/06 11:24:38 checking machine...
2021/12/06 11:24:38 checking revisions...
syzkaller login: [ 34.743216] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:24:38 testing simple program...
[ 34.792865] cgroup: Unknown subsys name 'net'
[ 34.794805] cgroup: Unknown subsys name 'net_prio'
[ 34.795751] cgroup: Unknown subsys name 'devices'
[ 34.797358] cgroup: Unknown subsys name 'blkio'
[ 34.832371]
[ 34.832675] =========================
[ 34.833158] WARNING: held lock freed!
[ 34.833669] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 34.834335] -------------------------
[ 34.834877] kworker/0:2/48 is freeing memory ffff88800d777c00-ffff88800d777dff, with a lock still held there!
[ 34.836186] ffff88800d777d48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 34.837350] 3 locks held by kworker/0:2/48:
[ 34.837943] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 34.839350] #1: ffff88800b737da8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 34.840948] #2: ffff88800d777d48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 34.842184]
[ 34.842184] stack backtrace:
[ 34.842812] CPU: 0 PID: 48 Comm: kworker/0:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 34.843819] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 34.845301] Workqueue: cgroup_destroy css_free_rwork_fn
[ 34.846043] Call Trace:
[ 34.846378]
[ 34.846757] dump_stack_lvl+0x8b/0xb3
[ 34.847255] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 34.847992] ? kernfs_put.part.0+0x334/0x540
[ 34.848574] kfree+0xb3/0x5a0
[ 34.848986] ? kmem_cache_free+0xce/0x640
[ 34.849534] kernfs_put.part.0+0x334/0x540
[ 34.850111] kernfs_put+0x42/0x50
[ 34.850595] __kernfs_remove+0x7ce/0xb00
[ 34.851163] ? lock_is_held_type+0xd7/0x130
[ 34.851766] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 34.852438] ? down_write+0xde/0x150
[ 34.852961] ? down_write_killable_nested+0x180/0x180
[ 34.853626] kernfs_destroy_root+0x89/0xb0
[ 34.854170] css_free_rwork_fn+0xa28/0xf40
[ 34.854811] process_one_work+0xa30/0x1710
[ 34.855340] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 34.856845] ? rwlock_bug.part.0+0x90/0x90
[ 34.858231] ? _raw_spin_lock_irq+0x41/0x50
[ 34.859691] worker_thread+0x62a/0x13e0
[ 34.860982] ? process_one_work+0x1710/0x1710
[ 34.862426] kthread+0x40c/0x500
[ 34.863520] ? set_kthread_struct+0x130/0x130
[ 34.864941] ret_from_fork+0x22/0x30
[ 34.866185]
[ 34.874682] ==================================================================
[ 34.875682] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 34.876448] Read of size 8 at addr ffff88800d777d40 by task kworker/0:2/48
[ 34.877380]
[ 34.877609] CPU: 0 PID: 48 Comm: kworker/0:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 34.886852] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 34.888315] Workqueue: cgroup_destroy css_free_rwork_fn
[ 34.889170] Call Trace:
[ 34.889497]
[ 34.889815] dump_stack_lvl+0x8b/0xb3
[ 34.890312] print_address_description.constprop.0+0x1f/0x180
[ 34.893978] ? up_write+0x3ac/0x460
[ 34.894458] ? up_write+0x3ac/0x460
[ 34.894931] kasan_report.cold+0x7f/0x11b
[ 34.895476] ? up_write+0x3ac/0x460
[ 34.895968] up_write+0x3ac/0x460
[ 34.896408] css_free_rwork_fn+0xa28/0xf40
[ 34.896991] process_one_work+0xa30/0x1710
[ 34.897538] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 34.898112] ? rwlock_bug.part.0+0x90/0x90
[ 34.898877] ? _raw_spin_lock_irq+0x41/0x50
[ 34.899439] worker_thread+0x62a/0x13e0
[ 34.900004] ? process_one_work+0x1710/0x1710
[ 34.900581] kthread+0x40c/0x500
[ 34.901017] ? set_kthread_struct+0x130/0x130
[ 34.901596] ret_from_fork+0x22/0x30
[ 34.902105]
[ 34.902395]
[ 34.906652] Allocated by task 280:
[ 34.908069] kasan_save_stack+0x1e/0x40
[ 34.908559] __kasan_kmalloc+0x81/0xa0
[ 34.909074] kernfs_create_root+0x4c/0x410
[ 34.909600] cgroup_setup_root+0x346/0xb60
[ 34.910122] cgroup1_get_tree+0xc1b/0x1370
[ 34.910887] vfs_get_tree+0x8e/0x2f0
[ 34.911355] path_mount+0x131b/0x1f80
[ 34.911871] __x64_sys_mount+0x27e/0x300
[ 34.912383] do_syscall_64+0x3b/0x90
[ 34.912874] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 34.913511]
[ 34.913726] Freed by task 48:
[ 34.914145] kasan_save_stack+0x1e/0x40
[ 34.926712] kasan_set_track+0x21/0x30
[ 34.927170] kasan_set_free_info+0x20/0x30
[ 34.927644] __kasan_slab_free+0x108/0x170
[ 34.928168] kfree+0xc5/0x5a0
[ 34.928519] kernfs_put.part.0+0x334/0x540
[ 34.929024] kernfs_put+0x42/0x50
[ 34.929410] __kernfs_remove+0x7ce/0xb00
[ 34.929898] kernfs_destroy_root+0x89/0xb0
[ 34.930379] css_free_rwork_fn+0xa28/0xf40
[ 34.930931] process_one_work+0xa30/0x1710
[ 34.931463] worker_thread+0x62a/0x13e0
[ 34.931990] kthread+0x40c/0x500
[ 34.932419] ret_from_fork+0x22/0x30
[ 34.932930]
[ 34.933133] The buggy address belongs to the object at ffff88800d777c00
[ 34.933133] which belongs to the cache kmalloc-512 of size 512
[ 34.934661] The buggy address is located 320 bytes inside of
[ 34.934661] 512-byte region [ffff88800d777c00, ffff88800d777e00)
[ 34.936111] The buggy address belongs to the page:
[ 34.936711] page:000000006aea8446 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xd774
[ 34.937902] head:000000006aea8446 order:2 compound_mapcount:0 compound_pincount:0
[ 34.938871] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 34.939536] raw: 0100000000010200 ffffea0000207300 dead000000000002 ffff888007841c80
[ 34.940433] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
[ 34.941333] page dumped because: kasan: bad access detected
[ 34.941960]
[ 34.942144] Memory state around the buggy address:
[ 34.942717] ffff88800d777c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.943539] ffff88800d777c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.944356] >ffff88800d777d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.945162] ^
[ 34.945780] ffff88800d777d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.946606] ffff88800d777e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 34.947459] ==================================================================
[ 34.992202] cgroup: Unknown subsys name 'hugetlb'
[ 34.993270] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:24:39 Registers:
info registers vcpu 0
RAX=0000000000000078 RBX=00000000000003f8 RCX=0000000000000000 RDX=00000000000003f8
RSI=ffffffff823640e1 RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff88800b737750
R8 =0000000000000000 R9 =0000000000000078 R10=ffffffff82365d23 R11=000000000000000a
R12=0000000000000078 R13=0000000000000078 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 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=000000c00081c000 CR3=000000000e492000 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 3f847ae147ae147b
YMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM03=0000000000000000 0000000000000000 0000000000000000 3f7125b921ae482b
YMM04=0000000000000000 0000000000000000 732f6c61636f6c2f 7273752f3d485441
YMM05=0000000000000000 0000000000000000 622f6c61636f6c2f 7273752f3a6e6962
YMM06=0000000000000000 0000000000000000 73752f3a6e696273 2f7273752f3a6e69
YMM07=0000000000000000 0000000000000000 6e69622f3a6e6962 732f3a6e69622f72
YMM08=0000000000000000 0000000000000000 6532303939353633 3966613537373262
YMM09=0000000000000000 0000000000000000 3436386238623436 3430373635353136
YMM10=0000000000000000 0000000000000000 6139623737386262 3428013239323362
YMM11=0000000000000000 0000000000000000 3533373762656634 6430373965303734
YMM12=0000000000000000 0000000000000000 0062353430353763 3231343962323161
YMM13=0000000000000000 0000000000000000 7246656361526174 61440e010096ff01
YMM14=0000000000000000 0000000000000000 467265766f431101 0096ff0173656d61
YMM15=0000000000000000 0000000000000000 0000000a0170616d 7469427265746c69
info registers vcpu 1
RAX=ffffffff84078af0 RBX=ffff8880081a9ac0 RCX=ffffffff8405abe1 RDX=ffffed100d9e7143
RSI=0000000000000001 RDI=ffffffff84078eaf RBP=0000000000000001 RSP=ffff888008207e78
R8 =0000000000000000 R9 =ffff88806cf38a13 R10=ffffed100d9e7142 R11=0000000000000001
R12=ffffed1001035358 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 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=00007fa5571145e0 CR3=000000000e492000 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 413c41abe8233d13
YMM01=0000000000000000 0000000000000000 0000000000000000 3f847ae147ae147b
YMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM03=0000000000000000 0000000000000000 0000000000000000 3f695ac5d2253170
YMM04=0000000000000000 0000000000000000 00007fe9b02e0e00 0000000000415710
YMM05=0000000000000000 0000000000000000 0000000000b12758 000000c0002ee3a8
YMM06=0000000000000000 0000000000000000 0000000000505007 000000c00002efc0
YMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM08=0000000000000000 0000000000000000 00000000004643c6 0000000000000000
YMM09=0000000000000000 0000000000000000 00000000004643c1 0000000000000000
YMM10=0000000000000000 0000000000000000 000000c00000d080 000000c00054c2c0
YMM11=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM12=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM13=0000000000000000 0000000000000000 000000c00011c1e0 000000c00011c1b0
YMM14=0000000000000000 0000000000000000 000000c00011c240 000000c00011c210
YMM15=0000000000000000 0000000000000000 000000c00011e6e0 000000c00011c270