Debian GNU/Linux 11 syzkaller ttyS0
Warning: Permanently added '[localhost]:53826' (ECDSA) to the list of known hosts.
2021/12/06 11:32:56 fuzzer started
2021/12/06 11:32:57 dialing manager at localhost:35719
2021/12/06 11:32:57 checking machine...
2021/12/06 11:32:57 checking revisions...
syzkaller login: [ 30.070066] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:32:57 testing simple program...
[ 30.120636] cgroup: Unknown subsys name 'net'
[ 30.122123] cgroup: Unknown subsys name 'net_prio'
[ 30.124753] cgroup: Unknown subsys name 'devices'
[ 30.126427] cgroup: Unknown subsys name 'blkio'
[ 30.155625]
[ 30.156076] =========================
[ 30.156865] WARNING: held lock freed!
[ 30.157666] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 30.158826] -------------------------
[ 30.160128] kworker/1:0/18 is freeing memory ffff88800e65e800-ffff88800e65e9ff, with a lock still held there!
[ 30.162572] ffff88800e65e948 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 30.164447] 3 locks held by kworker/1:0/18:
[ 30.165348] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 30.167547] #1: ffff88800823fda8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 30.170057] #2: ffff88800e65e948 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 30.172050]
[ 30.172050] stack backtrace:
[ 30.172979] CPU: 1 PID: 18 Comm: kworker/1:0 Not tainted 5.16.0-rc3-next-20211203 #1
[ 30.174624] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 30.177031] Workqueue: cgroup_destroy css_free_rwork_fn
[ 30.178164] Call Trace:
[ 30.178706]
[ 30.179181] dump_stack_lvl+0x8b/0xb3
[ 30.180009] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 30.181133] ? kernfs_put.part.0+0x334/0x540
[ 30.182073] kfree+0xb3/0x5a0
[ 30.182741] ? kmem_cache_free+0xce/0x640
[ 30.183617] kernfs_put.part.0+0x334/0x540
[ 30.184528] kernfs_put+0x42/0x50
[ 30.185257] __kernfs_remove+0x7ce/0xb00
[ 30.186112] ? lock_is_held_type+0xd7/0x130
[ 30.187027] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 30.188152] ? down_write+0xde/0x150
[ 30.188936] ? down_write_killable_nested+0x180/0x180
[ 30.190026] kernfs_destroy_root+0x89/0xb0
[ 30.190919] css_free_rwork_fn+0xa28/0xf40
[ 30.191824] process_one_work+0xa30/0x1710
[ 30.192723] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 30.193709] ? rwlock_bug.part.0+0x90/0x90
[ 30.194601] ? _raw_spin_lock_irq+0x41/0x50
[ 30.195515] worker_thread+0x62a/0x13e0
[ 30.196385] ? process_one_work+0x1710/0x1710
[ 30.197334] kthread+0x40c/0x500
[ 30.198048] ? set_kthread_struct+0x130/0x130
[ 30.199001] ret_from_fork+0x22/0x30
[ 30.199805]
[ 30.200512] ==================================================================
[ 30.202046] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 30.203304] Read of size 8 at addr ffff88800e65e940 by task kworker/1:0/18
[ 30.204790]
[ 30.205135] CPU: 1 PID: 18 Comm: kworker/1:0 Not tainted 5.16.0-rc3-next-20211203 #1
[ 30.206783] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 30.209195] Workqueue: cgroup_destroy css_free_rwork_fn
[ 30.210326] Call Trace:
[ 30.210865]
[ 30.211335] dump_stack_lvl+0x8b/0xb3
[ 30.212152] print_address_description.constprop.0+0x1f/0x180
[ 30.213389] ? up_write+0x3ac/0x460
[ 30.214155] ? up_write+0x3ac/0x460
[ 30.214919] kasan_report.cold+0x7f/0x11b
[ 30.215814] ? up_write+0x3ac/0x460
[ 30.216581] up_write+0x3ac/0x460
[ 30.217316] css_free_rwork_fn+0xa28/0xf40
[ 30.218216] process_one_work+0xa30/0x1710
[ 30.219122] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 30.220120] ? rwlock_bug.part.0+0x90/0x90
[ 30.221014] ? _raw_spin_lock_irq+0x41/0x50
[ 30.221932] worker_thread+0x62a/0x13e0
[ 30.222784] ? process_one_work+0x1710/0x1710
[ 30.223736] kthread+0x40c/0x500
[ 30.224474] ? set_kthread_struct+0x130/0x130
[ 30.225429] ret_from_fork+0x22/0x30
[ 30.226225]
[ 30.226711]
[ 30.227053] Allocated by task 281:
[ 30.227803] kasan_save_stack+0x1e/0x40
[ 30.228644] __kasan_kmalloc+0x81/0xa0
[ 30.229468] kernfs_create_root+0x4c/0x410
[ 30.230359] cgroup_setup_root+0x346/0xb60
[ 30.231254] cgroup1_get_tree+0xc1b/0x1370
[ 30.232163] vfs_get_tree+0x8e/0x2f0
[ 30.232952] path_mount+0x131b/0x1f80
[ 30.233758] __x64_sys_mount+0x27e/0x300
[ 30.234618] do_syscall_64+0x3b/0x90
[ 30.235404] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 30.236510]
[ 30.236854] Freed by task 18:
[ 30.237503] kasan_save_stack+0x1e/0x40
[ 30.238342] kasan_set_track+0x21/0x30
[ 30.239164] kasan_set_free_info+0x20/0x30
[ 30.240068] __kasan_slab_free+0x108/0x170
[ 30.240961] kfree+0xc5/0x5a0
[ 30.241622] kernfs_put.part.0+0x334/0x540
[ 30.242523] kernfs_put+0x42/0x50
[ 30.243252] __kernfs_remove+0x7ce/0xb00
[ 30.244134] kernfs_destroy_root+0x89/0xb0
[ 30.245025] css_free_rwork_fn+0xa28/0xf40
[ 30.245919] process_one_work+0xa30/0x1710
[ 30.246813] worker_thread+0x62a/0x13e0
[ 30.247652] kthread+0x40c/0x500
[ 30.248379] ret_from_fork+0x22/0x30
[ 30.249162]
[ 30.249503] The buggy address belongs to the object at ffff88800e65e800
[ 30.249503] which belongs to the cache kmalloc-512 of size 512
[ 30.252129] The buggy address is located 320 bytes inside of
[ 30.252129] 512-byte region [ffff88800e65e800, ffff88800e65ea00)
[ 30.254581] The buggy address belongs to the page:
[ 30.255600] page:000000002b487fa1 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe65c
[ 30.257551] head:000000002b487fa1 order:2 compound_mapcount:0 compound_pincount:0
[ 30.259129] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 30.260376] raw: 0100000000010200 dead000000000100 dead000000000122 ffff888007841c80
[ 30.262007] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
[ 30.263632] page dumped because: kasan: bad access detected
[ 30.264861]
[ 30.265201] Memory state around the buggy address:
[ 30.266219] ffff88800e65e800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 30.267744] ffff88800e65e880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 30.269270] >ffff88800e65e900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 30.270792] ^
[ 30.271941] ffff88800e65e980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 30.273472] ffff88800e65ea00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 30.275005] ==================================================================
[ 30.303604] cgroup: Unknown subsys name 'hugetlb'
[ 30.305045] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:32:57 Registers:
info registers vcpu 0
RAX=000000000fdf7900 RBX=00007f46d594004a RCX=0000000000000000 RDX=0000000000000001
RSI=00007f46d594004a RDI=ffffffff85241e60 RBP=00007f46d594004a RSP=ffff88800fdf77f0
R8 =ffffffffff600000 R9 =ffffffff85fb8f78 R10=ffffffff81006eae R11=0000000000034044
R12=ffff88800fdf7918 R13=0000000000000000 R14=ffff8880185cb580 R15=0000000000000000
RIP=ffffffff8143a066 RFL=00000046 [---Z-P-] 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 0000555555dca400 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=00007f287fc76c00 CR3=000000001ae44000 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 40faab0000000000
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=dffffc0000000060 RBX=00000000000003fd RCX=0000000000000000 RDX=00000000000003fd
RSI=ffffffff8236405c RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff88800823f5f0
R8 =0000000000000071 R9 =0000000000000031 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=00007f287fc2f750 CR3=000000000ed56000 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 000046000d0a0920
YMM01=0000000000000000 0000000000000000 ffffffffffffffff ffff0f0e0d0c0b0a
YMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM03=0000000000000000 0000000000000000 6c75636570530a65 6c626172656e6c75
YMM04=0000000000000000 0000000000000000 6c616e6f69746964 6e6f63093a68636e
YMM05=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM06=0000000000000000 0000000000000000 6c61636569530a64 6c6261093a68636e
YMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM08=0000000000000000 0000000000000000 7368746150796c6e 4f64616552646e69
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