Warning: Permanently added '[localhost]:51414' (ECDSA) to the list of known hosts.
2021/12/06 11:30:38 fuzzer started
2021/12/06 11:30:38 dialing manager at localhost:35719
2021/12/06 11:30:38 checking machine...
2021/12/06 11:30:38 checking revisions...
syzkaller login: [ 35.212145] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:30:38 testing simple program...
[ 35.258191] cgroup: Unknown subsys name 'net'
[ 35.260707] cgroup: Unknown subsys name 'net_prio'
[ 35.262656] cgroup: Unknown subsys name 'devices'
[ 35.264311] cgroup: Unknown subsys name 'blkio'
[ 35.295781]
[ 35.296250] =========================
[ 35.297235] WARNING: held lock freed!
[ 35.298140] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 35.299598] -------------------------
[ 35.301032] kworker/0:2/47 is freeing memory ffff88800ddc7000-ffff88800ddc71ff, with a lock still held there!
[ 35.303990] ffff88800ddc7148 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.306165] 3 locks held by kworker/0:2/47:
[ 35.307110] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 35.309397] #1: ffff88800b717da8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 35.312004] #2: ffff88800ddc7148 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.314119]
[ 35.314119] stack backtrace:
[ 35.315265] CPU: 0 PID: 47 Comm: kworker/0:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.317347] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.320353] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.321789] Call Trace:
[ 35.322466] <TASK>
[ 35.323012] dump_stack_lvl+0x8b/0xb3
[ 35.323861] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 35.325035] ? kernfs_put.part.0+0x334/0x540
[ 35.326024] kfree+0xb3/0x5a0
[ 35.326712] ? kmem_cache_free+0xce/0x640
[ 35.327627] kernfs_put.part.0+0x334/0x540
[ 35.328564] kernfs_put+0x42/0x50
[ 35.329343] __kernfs_remove+0x7ce/0xb00
[ 35.330236] ? lock_is_held_type+0xd7/0x130
[ 35.331183] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 35.332322] ? down_write+0xde/0x150
[ 35.333130] ? down_write_killable_nested+0x180/0x180
[ 35.334268] kernfs_destroy_root+0x89/0xb0
[ 35.335189] css_free_rwork_fn+0xa28/0xf40
[ 35.336114] process_one_work+0xa30/0x1710
[ 35.337039] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.338079] ? rwlock_bug.part.0+0x90/0x90
[ 35.339005] ? _raw_spin_lock_irq+0x41/0x50
[ 35.339954] worker_thread+0x62a/0x13e0
[ 35.340834] ? process_one_work+0x1710/0x1710
[ 35.341828] kthread+0x40c/0x500
[ 35.342570] ? set_kthread_struct+0x130/0x130
[ 35.343546] ret_from_fork+0x22/0x30
[ 35.344374] </TASK>
[ 35.344967] ==================================================================
[ 35.346554] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 35.347889] Read of size 8 at addr ffff88800ddc7140 by task kworker/0:2/47
[ 35.349419]
[ 35.349783] CPU: 0 PID: 47 Comm: kworker/0:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.351511] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.353977] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.355173] Call Trace:
[ 35.355732] <TASK>
[ 35.356216] dump_stack_lvl+0x8b/0xb3
[ 35.357043] print_address_description.constprop.0+0x1f/0x180
[ 35.358347] ? up_write+0x3ac/0x460
[ 35.359176] ? up_write+0x3ac/0x460
[ 35.359968] kasan_report.cold+0x7f/0x11b
[ 35.360872] ? up_write+0x3ac/0x460
[ 35.361688] up_write+0x3ac/0x460
[ 35.362444] css_free_rwork_fn+0xa28/0xf40
[ 35.363409] process_one_work+0xa30/0x1710
[ 35.364337] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.365365] ? rwlock_bug.part.0+0x90/0x90
[ 35.366284] ? _raw_spin_lock_irq+0x41/0x50
[ 35.367264] worker_thread+0x62a/0x13e0
[ 35.368143] ? process_one_work+0x1710/0x1710
[ 35.369151] kthread+0x40c/0x500
[ 35.369917] ? set_kthread_struct+0x130/0x130
[ 35.370893] ret_from_fork+0x22/0x30
[ 35.371707] </TASK>
[ 35.372207]
[ 35.372561] Allocated by task 280:
[ 35.373376] kasan_save_stack+0x1e/0x40
[ 35.374239] __kasan_kmalloc+0x81/0xa0
[ 35.375088] kernfs_create_root+0x4c/0x410
[ 35.375997] cgroup_setup_root+0x346/0xb60
[ 35.376916] cgroup1_get_tree+0xc1b/0x1370
[ 35.377867] vfs_get_tree+0x8e/0x2f0
[ 35.378666] path_mount+0x131b/0x1f80
[ 35.379477] __x64_sys_mount+0x27e/0x300
[ 35.380342] do_syscall_64+0x3b/0x90
[ 35.381170] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 35.382290]
[ 35.382635] Freed by task 47:
[ 35.383286] kasan_save_stack+0x1e/0x40
[ 35.384131] kasan_set_track+0x21/0x30
[ 35.384994] kasan_set_free_info+0x20/0x30
[ 35.385922] __kasan_slab_free+0x108/0x170
[ 35.386819] kfree+0xc5/0x5a0
[ 35.387480] kernfs_put.part.0+0x334/0x540
[ 35.388379] kernfs_put+0x42/0x50
[ 35.389154] __kernfs_remove+0x7ce/0xb00
[ 35.390045] kernfs_destroy_root+0x89/0xb0
[ 35.390942] css_free_rwork_fn+0xa28/0xf40
[ 35.391843] process_one_work+0xa30/0x1710
[ 35.392742] worker_thread+0x62a/0x13e0
[ 35.393639] kthread+0x40c/0x500
[ 35.394384] ret_from_fork+0x22/0x30
[ 35.395167]
[ 35.395508] The buggy address belongs to the object at ffff88800ddc7000
[ 35.395508] which belongs to the cache kmalloc-512 of size 512
[ 35.398137] The buggy address is located 320 bytes inside of
[ 35.398137] 512-byte region [ffff88800ddc7000, ffff88800ddc7200)
[ 35.400575] The buggy address belongs to the page:
[ 35.401618] page:0000000018e80569 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xddc4
[ 35.403589] head:0000000018e80569 order:2 compound_mapcount:0 compound_pincount:0
[ 35.405162] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 35.406448] raw: 0100000000010200 0000000000000000 dead000000000001 ffff888007841c80
[ 35.408111] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
[ 35.409754] page dumped because: kasan: bad access detected
[ 35.410963]
[ 35.411319] Memory state around the buggy address:
[ 35.412367] ffff88800ddc7000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.413978] ffff88800ddc7080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.415615] >ffff88800ddc7100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.417209] ^
[ 35.418407] ffff88800ddc7180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.420037] ffff88800ddc7200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 35.421641] ==================================================================
[ 35.453095] cgroup: Unknown subsys name 'hugetlb'
[ 35.456988] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:30:38 Registers:
info registers vcpu 0
RAX=dffffc0000000060 RBX=00000000000003fd RCX=0000000000000000 RDX=00000000000003fd
RSI=ffffffff8236405c RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff88800b7175f0
R8 =0000000000000029 R9 =0000000000000035 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 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=000055d37e3d9db8 CR3=000000001526c000 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 ffffffffffffff00 000000ff00000000
YMM02=0000000000000000 0000000000000000 696e752f646d6574 7379732f6e75722f
YMM03=0000000000000000 0000000000000000 003a6e6f69746163 6f766e692f737469
YMM04=0000000000000000 0000000000000000 0a312d30093a7473 696c5f6465776f6c
YMM05=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM06=0000000000000000 0000000000000000 0a312d30093a430a 64655f62616e6520
YMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM08=0000000000000000 0000000000000000 0000000000000051 6e67496769530a33
YMM09=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM10=0000000000000000 0000000000000000 2020000000002020 2020202020200000
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=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=00007f974f9f5000 CR3=000000000e2e4000 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 30333a3131203620 206365443e30333c
YMM01=0000000000000000 0000000000000000 6d2e74656e2d7075 6f7267637a797320
YMM02=0000000000000000 0000000000000000 2079746972756365 732078756e694c45
YMM03=0000000000000000 0000000000000000 2064656c69614620 3a656d616e796278
YMM04=0000000000000000 0000000000000000 6456774875434142 334f726f59427469
YMM05=0000000000000000 0000000000000000 485320415352203a 3268737320363735
YMM06=0000000000000000 0000000000000000 206d6f726620746f 6f7220726f662079
YMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM08=0000000000000000 0000000000000000 3a67756265642067 6f6c737973720000
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