Warning: Permanently added '[localhost]:38965' (ECDSA) to the list of known hosts.
2021/12/06 11:31:35 fuzzer started
2021/12/06 11:31:35 dialing manager at localhost:35719
2021/12/06 11:31:35 checking machine...
2021/12/06 11:31:35 checking revisions...
syzkaller login: [ 34.526786] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:31:35 testing simple program...
[ 34.569635] cgroup: Unknown subsys name 'net'
[ 34.570900] cgroup: Unknown subsys name 'net_prio'
[ 34.572332] cgroup: Unknown subsys name 'devices'
[ 34.573762] cgroup: Unknown subsys name 'blkio'
[ 34.595163]
[ 34.595551] =========================
[ 34.596291] WARNING: held lock freed!
[ 34.597100] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 34.598090] -------------------------
[ 34.599043] kworker/1:2/49 is freeing memory ffff88800e738c00-ffff88800e738dff, with a lock still held there!
[ 34.601712] ffff88800e738d48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 34.603453] 3 locks held by kworker/1:2/49:
[ 34.604278] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 34.606329] #1: ffff88800b76fda8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 34.608684] #2: ffff88800e738d48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 34.610564]
[ 34.610564] stack backtrace:
[ 34.611435] CPU: 1 PID: 49 Comm: kworker/1:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 34.612960] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 34.615173] Workqueue: cgroup_destroy css_free_rwork_fn
[ 34.616223] Call Trace:
[ 34.616744]
[ 34.617186] dump_stack_lvl+0x8b/0xb3
[ 34.617941] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 34.618986] ? kernfs_put.part.0+0x334/0x540
[ 34.619860] kfree+0xb3/0x5a0
[ 34.620554] ? kmem_cache_free+0xce/0x640
[ 34.621407] kernfs_put.part.0+0x334/0x540
[ 34.622255] kernfs_put+0x42/0x50
[ 34.622946] __kernfs_remove+0x7ce/0xb00
[ 34.623755] ? lock_is_held_type+0xd7/0x130
[ 34.624613] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 34.625686] ? down_write+0xde/0x150
[ 34.626433] ? down_write_killable_nested+0x180/0x180
[ 34.627449] kernfs_destroy_root+0x89/0xb0
[ 34.628287] css_free_rwork_fn+0xa28/0xf40
[ 34.629138] process_one_work+0xa30/0x1710
[ 34.629986] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 34.630909] ? rwlock_bug.part.0+0x90/0x90
[ 34.631744] ? _raw_spin_lock_irq+0x41/0x50
[ 34.632606] worker_thread+0x62a/0x13e0
[ 34.633411] ? process_one_work+0x1710/0x1710
[ 34.634299] kthread+0x40c/0x500
[ 34.634971] ? set_kthread_struct+0x130/0x130
[ 34.635855] ret_from_fork+0x22/0x30
[ 34.636597]
[ 34.637242] ==================================================================
[ 34.638891] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 34.640226] Read of size 8 at addr ffff88800e738d40 by task kworker/1:2/49
[ 34.641796]
[ 34.642171] CPU: 1 PID: 49 Comm: kworker/1:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 34.643955] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 34.646582] Workqueue: cgroup_destroy css_free_rwork_fn
[ 34.647817] Call Trace:
[ 34.648404]
[ 34.648930] dump_stack_lvl+0x8b/0xb3
[ 34.649810] print_address_description.constprop.0+0x1f/0x180
[ 34.651158] ? up_write+0x3ac/0x460
[ 34.651988] ? up_write+0x3ac/0x460
[ 34.652795] kasan_report.cold+0x7f/0x11b
[ 34.653741] ? up_write+0x3ac/0x460
[ 34.654587] up_write+0x3ac/0x460
[ 34.655386] css_free_rwork_fn+0xa28/0xf40
[ 34.656372] process_one_work+0xa30/0x1710
[ 34.657376] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 34.658456] ? rwlock_bug.part.0+0x90/0x90
[ 34.659429] ? _raw_spin_lock_irq+0x41/0x50
[ 34.660429] worker_thread+0x62a/0x13e0
[ 34.661361] ? process_one_work+0x1710/0x1710
[ 34.662399] kthread+0x40c/0x500
[ 34.663176] ? set_kthread_struct+0x130/0x130
[ 34.664211] ret_from_fork+0x22/0x30
[ 34.665088]
[ 34.665620]
[ 34.665992] Allocated by task 282:
[ 34.666794] kasan_save_stack+0x1e/0x40
[ 34.667704] __kasan_kmalloc+0x81/0xa0
[ 34.668564] kernfs_create_root+0x4c/0x410
[ 34.669522] cgroup_setup_root+0x346/0xb60
[ 34.670495] cgroup1_get_tree+0xc1b/0x1370
[ 34.671471] vfs_get_tree+0x8e/0x2f0
[ 34.672326] path_mount+0x131b/0x1f80
[ 34.673213] __x64_sys_mount+0x27e/0x300
[ 34.674149] do_syscall_64+0x3b/0x90
[ 34.675002] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 34.676191]
[ 34.676563] Freed by task 49:
[ 34.677290] kasan_save_stack+0x1e/0x40
[ 34.678205] kasan_set_track+0x21/0x30
[ 34.679099] kasan_set_free_info+0x20/0x30
[ 34.680051] __kasan_slab_free+0x108/0x170
[ 34.680998] kfree+0xc5/0x5a0
[ 34.681698] kernfs_put.part.0+0x334/0x540
[ 34.682640] kernfs_put+0x42/0x50
[ 34.683410] __kernfs_remove+0x7ce/0xb00
[ 34.684329] kernfs_destroy_root+0x89/0xb0
[ 34.685322] css_free_rwork_fn+0xa28/0xf40
[ 34.686293] process_one_work+0xa30/0x1710
[ 34.687254] worker_thread+0x62a/0x13e0
[ 34.688158] kthread+0x40c/0x500
[ 34.688929] ret_from_fork+0x22/0x30
[ 34.689775]
[ 34.690142] The buggy address belongs to the object at ffff88800e738c00
[ 34.690142] which belongs to the cache kmalloc-512 of size 512
[ 34.692975] The buggy address is located 320 bytes inside of
[ 34.692975] 512-byte region [ffff88800e738c00, ffff88800e738e00)
[ 34.695618] The buggy address belongs to the page:
[ 34.696737] page:0000000028402403 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe738
[ 34.698840] head:0000000028402403 order:2 compound_mapcount:0 compound_pincount:0
[ 34.700546] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 34.701894] raw: 0100000000010200 0000000000000000 dead000000000001 ffff888007841c80
[ 34.703661] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
[ 34.705423] page dumped because: kasan: bad access detected
[ 34.706697]
[ 34.707072] Memory state around the buggy address:
[ 34.708180] ffff88800e738c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.709839] ffff88800e738c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.711482] >ffff88800e738d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.713124] ^
[ 34.714339] ffff88800e738d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.715987] ffff88800e738e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 34.717644] ==================================================================
[ 34.765471] cgroup: Unknown subsys name 'hugetlb'
[ 34.767036] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:31:36 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=00007f3cd3a6a000 CR3=000000000d766000 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 0000000000000000
YMM02=0000000000000000 0000000000000000 0000000000000000 410f538000000000
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
info registers vcpu 1
RAX=000000000000006f RBX=00000000000003f8 RCX=0000000000000000 RDX=00000000000003f8
RSI=ffffffff823640e1 RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff88800b76f648
R8 =0000000000000000 R9 =000000000000006f R10=ffffffff82365d23 R11=000000000000000a
R12=000000000000006f R13=000000000000006f 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=00007fff0ac03fa8 CR3=000000000d766000 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 410f538000000000
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