Warning: Permanently added '[localhost]:56800' (ECDSA) to the list of known hosts.
2021/12/06 11:35:28 fuzzer started
2021/12/06 11:35:28 dialing manager at localhost:35719
2021/12/06 11:35:28 checking machine...
2021/12/06 11:35:28 checking revisions...
syzkaller login: [ 35.325274] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:35:28 testing simple program...
[ 35.360273] cgroup: Unknown subsys name 'net'
[ 35.361565] cgroup: Unknown subsys name 'net_prio'
[ 35.363155] cgroup: Unknown subsys name 'devices'
[ 35.366834] cgroup: Unknown subsys name 'blkio'
[ 35.390536]
[ 35.390871] =========================
[ 35.391581] WARNING: held lock freed!
[ 35.392290] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 35.393333] -------------------------
[ 35.394040] kworker/1:3/138 is freeing memory ffff888017d36c00-ffff888017d36dff, with a lock still held there!
[ 35.396528] ffff888017d36d48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.398208] 3 locks held by kworker/1:3/138:
[ 35.399030] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 35.400981] #1: ffff888018637da8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 35.403243] #2: ffff888017d36d48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.405044]
[ 35.405044] stack backtrace:
[ 35.405891] CPU: 1 PID: 138 Comm: kworker/1:3 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.407374] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.409510] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.410531] Call Trace:
[ 35.411012]
[ 35.411434] dump_stack_lvl+0x8b/0xb3
[ 35.412157] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 35.413165] ? kernfs_put.part.0+0x334/0x540
[ 35.414021] kfree+0xb3/0x5a0
[ 35.414611] ? kmem_cache_free+0xce/0x640
[ 35.415404] kernfs_put.part.0+0x334/0x540
[ 35.416210] kernfs_put+0x42/0x50
[ 35.416860] __kernfs_remove+0x7ce/0xb00
[ 35.417632] ? lock_is_held_type+0xd7/0x130
[ 35.418454] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 35.419440] ? down_write+0xde/0x150
[ 35.420134] ? down_write_killable_nested+0x180/0x180
[ 35.421113] kernfs_destroy_root+0x89/0xb0
[ 35.421923] css_free_rwork_fn+0xa28/0xf40
[ 35.422725] process_one_work+0xa30/0x1710
[ 35.423522] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.424395] ? rwlock_bug.part.0+0x90/0x90
[ 35.425183] ? _raw_spin_lock_irq+0x41/0x50
[ 35.426022] worker_thread+0x62a/0x13e0
[ 35.426773] ? process_one_work+0x1710/0x1710
[ 35.427626] kthread+0x40c/0x500
[ 35.428265] ? set_kthread_struct+0x130/0x130
[ 35.429112] ret_from_fork+0x22/0x30
[ 35.429818]
[ 35.430329] ==================================================================
[ 35.431685] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 35.432810] Read of size 8 at addr ffff888017d36d40 by task kworker/1:3/138
[ 35.434147]
[ 35.434449] CPU: 1 PID: 138 Comm: kworker/1:3 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.435940] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.438098] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.439089] Call Trace:
[ 35.439578]
[ 35.439995] dump_stack_lvl+0x8b/0xb3
[ 35.440715] print_address_description.constprop.0+0x1f/0x180
[ 35.441810] ? up_write+0x3ac/0x460
[ 35.442501] ? up_write+0x3ac/0x460
[ 35.443228] kasan_report.cold+0x7f/0x11b
[ 35.444022] ? up_write+0x3ac/0x460
[ 35.444722] up_write+0x3ac/0x460
[ 35.445381] css_free_rwork_fn+0xa28/0xf40
[ 35.446185] process_one_work+0xa30/0x1710
[ 35.446987] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.447856] ? rwlock_bug.part.0+0x90/0x90
[ 35.448643] ? _raw_spin_lock_irq+0x41/0x50
[ 35.449452] worker_thread+0x62a/0x13e0
[ 35.450222] ? process_one_work+0x1710/0x1710
[ 35.451077] kthread+0x40c/0x500
[ 35.451714] ? set_kthread_struct+0x130/0x130
[ 35.452570] ret_from_fork+0x22/0x30
[ 35.453284]
[ 35.453726]
[ 35.454039] Allocated by task 281:
[ 35.454692] kasan_save_stack+0x1e/0x40
[ 35.455436] __kasan_kmalloc+0x81/0xa0
[ 35.456166] kernfs_create_root+0x4c/0x410
[ 35.456952] cgroup_setup_root+0x346/0xb60
[ 35.457754] cgroup1_get_tree+0xc1b/0x1370
[ 35.458563] vfs_get_tree+0x8e/0x2f0
[ 35.459273] path_mount+0x131b/0x1f80
[ 35.459998] __x64_sys_mount+0x27e/0x300
[ 35.460769] do_syscall_64+0x3b/0x90
[ 35.461616] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 35.462640]
[ 35.462958] Freed by task 138:
[ 35.463580] kasan_save_stack+0x1e/0x40
[ 35.464344] kasan_set_track+0x21/0x30
[ 35.465107] kasan_set_free_info+0x20/0x30
[ 35.465930] __kasan_slab_free+0x108/0x170
[ 35.466768] kfree+0xc5/0x5a0
[ 35.467376] kernfs_put.part.0+0x334/0x540
[ 35.468201] kernfs_put+0x42/0x50
[ 35.468873] __kernfs_remove+0x7ce/0xb00
[ 35.469662] kernfs_destroy_root+0x89/0xb0
[ 35.470604] css_free_rwork_fn+0xa28/0xf40
[ 35.471404] process_one_work+0xa30/0x1710
[ 35.472204] worker_thread+0x62a/0x13e0
[ 35.472961] kthread+0x40c/0x500
[ 35.473603] ret_from_fork+0x22/0x30
[ 35.474322]
[ 35.474630] The buggy address belongs to the object at ffff888017d36c00
[ 35.474630] which belongs to the cache kmalloc-512 of size 512
[ 35.476978] The buggy address is located 320 bytes inside of
[ 35.476978] 512-byte region [ffff888017d36c00, ffff888017d36e00)
[ 35.479187] The buggy address belongs to the page:
[ 35.480104] page:000000001ef7be56 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x17d34
[ 35.481868] head:000000001ef7be56 order:2 compound_mapcount:0 compound_pincount:0
[ 35.483302] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 35.484416] raw: 0100000000010200 0000000000000000 dead000000000122 ffff888007841c80
[ 35.485890] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
[ 35.487364] page dumped because: kasan: bad access detected
[ 35.488430]
[ 35.488738] Memory state around the buggy address:
[ 35.489656] ffff888017d36c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.491034] ffff888017d36c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.492407] >ffff888017d36d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.493775] ^
[ 35.494794] ffff888017d36d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.496164] ffff888017d36e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 35.497520] ==================================================================
[ 35.530680] cgroup: Unknown subsys name 'hugetlb'
[ 35.532810] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:35:29 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=00007f4e770006d8 CR3=0000000008856000 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 3739663335393732 2d353330382d6365
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=dffffc0000000060 RBX=00000000000003fd RCX=0000000000000000 RDX=00000000000003fd
RSI=ffffffff8236405c RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff8880186375f0
R8 =0000000000000072 R9 =0000000000000038 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 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=00007ffef9984c68 CR3=000000000f53e000 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