Warning: Permanently added '[localhost]:11668' (ECDSA) to the list of known hosts.
2021/12/06 11:25:26 fuzzer started
2021/12/06 11:25:26 dialing manager at localhost:35719
2021/12/06 11:25:26 checking machine...
2021/12/06 11:25:26 checking revisions...
syzkaller login: [ 35.847352] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:25:26 testing simple program...
[ 35.890278] cgroup: Unknown subsys name 'net'
[ 35.891864] cgroup: Unknown subsys name 'net_prio'
[ 35.893773] cgroup: Unknown subsys name 'devices'
[ 35.897076] cgroup: Unknown subsys name 'blkio'
[ 35.939664]
[ 35.940225] =========================
[ 35.941281] WARNING: held lock freed!
[ 35.942658] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 35.943436] -------------------------
[ 35.943935] kworker/1:1/31 is freeing memory ffff8880170b8400-ffff8880170b85ff, with a lock still held there!
[ 35.945268] ffff8880170b8548 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.948051] 3 locks held by kworker/1:1/31:
[ 35.948595] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 35.949899] #1: ffff888009aa7da8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 35.951348] #2: ffff8880170b8548 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.952478]
[ 35.952478] stack backtrace:
[ 35.953020] CPU: 1 PID: 31 Comm: kworker/1:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.954188] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.955560] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.956223] Call Trace:
[ 35.956541]
[ 35.956816] dump_stack_lvl+0x8b/0xb3
[ 35.957728] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 35.959871] ? kernfs_put.part.0+0x334/0x540
[ 35.960555] kfree+0xb3/0x5a0
[ 35.960989] ? kmem_cache_free+0xce/0x640
[ 35.961621] kernfs_put.part.0+0x334/0x540
[ 35.962236] kernfs_put+0x42/0x50
[ 35.962866] __kernfs_remove+0x7ce/0xb00
[ 35.963494] ? lock_is_held_type+0xd7/0x130
[ 35.964642] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 35.966139] ? down_write+0xde/0x150
[ 35.967174] ? down_write_killable_nested+0x180/0x180
[ 35.968624] kernfs_destroy_root+0x89/0xb0
[ 35.969830] css_free_rwork_fn+0xa28/0xf40
[ 35.971014] process_one_work+0xa30/0x1710
[ 35.972224] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.973527] ? rwlock_bug.part.0+0x90/0x90
[ 35.974669] ? _raw_spin_lock_irq+0x41/0x50
[ 35.975840] worker_thread+0x62a/0x13e0
[ 35.976947] ? process_one_work+0x1710/0x1710
[ 35.978218] kthread+0x40c/0x500
[ 35.979166] ? set_kthread_struct+0x130/0x130
[ 35.980396] ret_from_fork+0x22/0x30
[ 35.981512]
[ 35.982334] ==================================================================
[ 35.984386] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 35.986035] Read of size 8 at addr ffff8880170b8540 by task kworker/1:1/31
[ 35.987865]
[ 35.988285] CPU: 1 PID: 31 Comm: kworker/1:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.990456] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.993928] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.995535] Call Trace:
[ 35.996302]
[ 35.996972] dump_stack_lvl+0x8b/0xb3
[ 35.998148] print_address_description.constprop.0+0x1f/0x180
[ 35.999897] ? up_write+0x3ac/0x460
[ 36.000979] ? up_write+0x3ac/0x460
[ 36.002084] kasan_report.cold+0x7f/0x11b
[ 36.003334] ? up_write+0x3ac/0x460
[ 36.004412] up_write+0x3ac/0x460
[ 36.005437] css_free_rwork_fn+0xa28/0xf40
[ 36.006738] process_one_work+0xa30/0x1710
[ 36.008012] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 36.009394] ? rwlock_bug.part.0+0x90/0x90
[ 36.010684] ? _raw_spin_lock_irq+0x41/0x50
[ 36.011970] worker_thread+0x62a/0x13e0
[ 36.013164] ? process_one_work+0x1710/0x1710
[ 36.014512] kthread+0x40c/0x500
[ 36.015527] ? set_kthread_struct+0x130/0x130
[ 36.016877] ret_from_fork+0x22/0x30
[ 36.018008]
[ 36.018704]
[ 36.019182] Allocated by task 283:
[ 36.020234] kasan_save_stack+0x1e/0x40
[ 36.021412] __kasan_kmalloc+0x81/0xa0
[ 36.022575] kernfs_create_root+0x4c/0x410
[ 36.023831] cgroup_setup_root+0x346/0xb60
[ 36.025101] cgroup1_get_tree+0xc1b/0x1370
[ 36.026373] vfs_get_tree+0x8e/0x2f0
[ 36.027501] path_mount+0x131b/0x1f80
[ 36.028639] __x64_sys_mount+0x27e/0x300
[ 36.029861] do_syscall_64+0x3b/0x90
[ 36.030976] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 36.032539]
[ 36.032823] Freed by task 31:
[ 36.033245] kasan_save_stack+0x1e/0x40
[ 36.033798] kasan_set_track+0x21/0x30
[ 36.034339] kasan_set_free_info+0x20/0x30
[ 36.034919] __kasan_slab_free+0x108/0x170
[ 36.035500] kfree+0xc5/0x5a0
[ 36.035940] kernfs_put.part.0+0x334/0x540
[ 36.036528] kernfs_put+0x42/0x50
[ 36.037000] __kernfs_remove+0x7ce/0xb00
[ 36.037579] kernfs_destroy_root+0x89/0xb0
[ 36.038136] css_free_rwork_fn+0xa28/0xf40
[ 36.038719] process_one_work+0xa30/0x1710
[ 36.039300] worker_thread+0x62a/0x13e0
[ 36.039845] kthread+0x40c/0x500
[ 36.040307] ret_from_fork+0x22/0x30
[ 36.040822]
[ 36.041044] The buggy address belongs to the object at ffff8880170b8400
[ 36.041044] which belongs to the cache kmalloc-512 of size 512
[ 36.042744] The buggy address is located 320 bytes inside of
[ 36.042744] 512-byte region [ffff8880170b8400, ffff8880170b8600)
[ 36.044322] The buggy address belongs to the page:
[ 36.044988] page:000000006ff9e73c refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x170b8
[ 36.046241] head:000000006ff9e73c order:2 compound_mapcount:0 compound_pincount:0
[ 36.047249] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 36.048055] raw: 0100000000010200 dead000000000100 dead000000000122 ffff888007841c80
[ 36.049107] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
[ 36.050170] page dumped because: kasan: bad access detected
[ 36.050931]
[ 36.051153] Memory state around the buggy address:
[ 36.051817] ffff8880170b8400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.052799] ffff8880170b8480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.053855] >ffff8880170b8500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.054841] ^
[ 36.055549] ffff8880170b8580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.056496] ffff8880170b8600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 36.057456] ==================================================================
[ 36.089384] cgroup: Unknown subsys name 'hugetlb'
[ 36.091844] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:25:27 Registers:
info registers vcpu 0
RAX=0000000000000000 RBX=ffff88806cf3d160 RCX=0000000000000000 RDX=ffff88800f478000
RSI=ffffffff813865f9 RDI=0000000000000003 RBP=0000000000000003 RSP=ffff88800fbff930
R8 =0000000000000000 R9 =0000000000000001 R10=ffffffff8138661f R11=0000000000000000
R12=ffffed100d9e7a2d R13=0000000000000001 R14=ffff88806cf3d168 R15=0000000000000001
RIP=ffffffff813865fb RFL=00000293 [--S-A-C] 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 0000555555b45400 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=00007fb9aac098c0 CR3=000000001b2e8000 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 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
info registers vcpu 1
RAX=0000000000000035 RBX=00000000000003f8 RCX=0000000000000000 RDX=00000000000003f8
RSI=ffffffff823640e1 RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff888009aa7538
R8 =0000000000000000 R9 =0000000000000035 R10=ffffffff82365d23 R11=000000000000000a
R12=0000000000000035 R13=0000000000000035 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=00007fb9aaba3180 CR3=000000001b2e8000 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