Debian GNU/Linux 11 syzkaller ttyS0
Warning: Permanently added '[localhost]:56257' (ECDSA) to the list of known hosts.
2021/12/06 11:29:03 fuzzer started
2021/12/06 11:29:04 dialing manager at localhost:35719
2021/12/06 11:29:04 checking machine...
2021/12/06 11:29:04 checking revisions...
syzkaller login: [ 28.029163] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:29:04 testing simple program...
[ 28.075488] cgroup: Unknown subsys name 'net'
[ 28.077068] cgroup: Unknown subsys name 'net_prio'
[ 28.079046] cgroup: Unknown subsys name 'devices'
[ 28.080852] cgroup: Unknown subsys name 'blkio'
[ 28.100451]
[ 28.100834] =========================
[ 28.101606] WARNING: held lock freed!
[ 28.102378] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 28.103610] -------------------------
[ 28.104888] kworker/0:1/10 is freeing memory ffff88800d474400-ffff88800d4745ff, with a lock still held there!
[ 28.107324] ffff88800d474548 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 28.109209] 3 locks held by kworker/0:1/10:
[ 28.110106] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 28.112268] #1: ffff888008197da8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 28.114742] #2: ffff88800d474548 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 28.116687]
[ 28.116687] stack backtrace:
[ 28.117605] CPU: 0 PID: 10 Comm: kworker/0:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 28.119219] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 28.121599] Workqueue: cgroup_destroy css_free_rwork_fn
[ 28.122713] Call Trace:
[ 28.123243]
[ 28.123704] dump_stack_lvl+0x8b/0xb3
[ 28.124523] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 28.125621] ? kernfs_put.part.0+0x334/0x540
[ 28.126535] kfree+0xb3/0x5a0
[ 28.127183] ? kmem_cache_free+0xce/0x640
[ 28.128057] kernfs_put.part.0+0x334/0x540
[ 28.128941] kernfs_put+0x42/0x50
[ 28.129654] __kernfs_remove+0x7ce/0xb00
[ 28.130488] ? lock_is_held_type+0xd7/0x130
[ 28.131393] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 28.132516] ? down_write+0xde/0x150
[ 28.133292] ? down_write_killable_nested+0x180/0x180
[ 28.134357] kernfs_destroy_root+0x89/0xb0
[ 28.135252] css_free_rwork_fn+0xa28/0xf40
[ 28.136154] process_one_work+0xa30/0x1710
[ 28.137052] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 28.138029] ? rwlock_bug.part.0+0x90/0x90
[ 28.138915] ? _raw_spin_lock_irq+0x41/0x50
[ 28.139822] worker_thread+0x62a/0x13e0
[ 28.140677] ? process_one_work+0x1710/0x1710
[ 28.141625] kthread+0x40c/0x500
[ 28.142338] ? set_kthread_struct+0x130/0x130
[ 28.143276] ret_from_fork+0x22/0x30
[ 28.144084]
[ 28.144672] ==================================================================
[ 28.146177] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 28.147409] Read of size 8 at addr ffff88800d474540 by task kworker/0:1/10
[ 28.148857]
[ 28.149197] CPU: 0 PID: 10 Comm: kworker/0:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 28.150803] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 28.153169] Workqueue: cgroup_destroy css_free_rwork_fn
[ 28.154269] Call Trace:
[ 28.154793]
[ 28.155251] dump_stack_lvl+0x8b/0xb3
[ 28.156049] print_address_description.constprop.0+0x1f/0x180
[ 28.157240] ? up_write+0x3ac/0x460
[ 28.157993] ? up_write+0x3ac/0x460
[ 28.158731] kasan_report.cold+0x7f/0x11b
[ 28.159559] ? up_write+0x3ac/0x460
[ 28.160320] up_write+0x3ac/0x460
[ 28.161046] css_free_rwork_fn+0xa28/0xf40
[ 28.161925] process_one_work+0xa30/0x1710
[ 28.162788] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 28.163741] ? rwlock_bug.part.0+0x90/0x90
[ 28.164614] ? _raw_spin_lock_irq+0x41/0x50
[ 28.165489] worker_thread+0x62a/0x13e0
[ 28.166305] ? process_one_work+0x1710/0x1710
[ 28.167219] kthread+0x40c/0x500
[ 28.167899] ? set_kthread_struct+0x130/0x130
[ 28.168815] ret_from_fork+0x22/0x30
[ 28.169570]
[ 28.170042]
[ 28.170368] Allocated by task 280:
[ 28.171068] kasan_save_stack+0x1e/0x40
[ 28.171876] __kasan_kmalloc+0x81/0xa0
[ 28.172662] kernfs_create_root+0x4c/0x410
[ 28.173538] cgroup_setup_root+0x346/0xb60
[ 28.174397] cgroup1_get_tree+0xc1b/0x1370
[ 28.175259] vfs_get_tree+0x8e/0x2f0
[ 28.176057] path_mount+0x131b/0x1f80
[ 28.176852] __x64_sys_mount+0x27e/0x300
[ 28.177699] do_syscall_64+0x3b/0x90
[ 28.178463] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 28.179521]
[ 28.179859] Freed by task 10:
[ 28.180509] kasan_save_stack+0x1e/0x40
[ 28.181336] kasan_set_track+0x21/0x30
[ 28.182136] kasan_set_free_info+0x20/0x30
[ 28.183002] __kasan_slab_free+0x108/0x170
[ 28.183882] kfree+0xc5/0x5a0
[ 28.184530] kernfs_put.part.0+0x334/0x540
[ 28.185406] kernfs_put+0x42/0x50
[ 28.186107] __kernfs_remove+0x7ce/0xb00
[ 28.186922] kernfs_destroy_root+0x89/0xb0
[ 28.187784] css_free_rwork_fn+0xa28/0xf40
[ 28.188683] process_one_work+0xa30/0x1710
[ 28.189563] worker_thread+0x62a/0x13e0
[ 28.190365] kthread+0x40c/0x500
[ 28.191044] ret_from_fork+0x22/0x30
[ 28.191811]
[ 28.192162] The buggy address belongs to the object at ffff88800d474400
[ 28.192162] which belongs to the cache kmalloc-512 of size 512
[ 28.194754] The buggy address is located 320 bytes inside of
[ 28.194754] 512-byte region [ffff88800d474400, ffff88800d474600)
[ 28.197195] The buggy address belongs to the page:
[ 28.198209] page:00000000765fa50c refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xd474
[ 28.200164] head:00000000765fa50c order:2 compound_mapcount:0 compound_pincount:0
[ 28.201740] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 28.202970] raw: 0100000000010200 0000000000000000 dead000000000001 ffff888007841c80
[ 28.204603] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
[ 28.206214] page dumped because: kasan: bad access detected
[ 28.207387]
[ 28.207726] Memory state around the buggy address:
[ 28.208760] ffff88800d474400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 28.210270] ffff88800d474480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 28.211775] >ffff88800d474500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 28.213285] ^
[ 28.214413] ffff88800d474580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 28.215875] ffff88800d474600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 28.217330] ==================================================================
[ 28.246023] cgroup: Unknown subsys name 'hugetlb'
[ 28.247849] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:29:04 Registers:
info registers vcpu 0
RAX=dffffc0000000060 RBX=00000000000003fd RCX=0000000000000000 RDX=00000000000003fd
RSI=ffffffff8236405c RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff8880081975f0
R8 =0000000000000029 R9 =000000000000002d 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=00007ffcba3c6ed8 CR3=000000000cb7c000 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 bfe62e42fefa39ef
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=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=00007f86cf38f6d0 CR3=000000000cb7c000 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 4140fd09e019b370
YMM01=0000000000000000 0000000000000000 0000000000000000 3f847ae147ae147b
YMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM03=0000000000000000 0000000000000000 0000000000000000 3f7408c162627ce8
YMM04=0000000000000000 0000000000000000 00007fd735da3900 0000000000415710
YMM05=0000000000000000 0000000000000000 0000000000000001 000000c0002ec808
YMM06=0000000000000000 0000000000000000 0000000000505007 000000c000376fc0
YMM07=0000000000000000 0000000000000000 0000000000000000 00000000000009f9
YMM08=0000000000000000 0000000000000000 0000000000000000 00000000000009fa
YMM09=0000000000000000 0000000000000000 00000000004643c1 0000000000000000
YMM10=0000000000000000 0000000000000000 000000c0004362e0 000000c00015cb00
YMM11=0000000000000000 0000000000000000 0000000000000000 00000000000009fd
YMM12=0000000000000000 0000000000000000 0000000000000000 0000000000000a00
YMM13=0000000000000000 0000000000000000 000000c00029a6f0 000000c0002be000
YMM14=0000000000000000 0000000000000000 000000c00029aba0 000000c00009a150
YMM15=0000000000000000 0000000000000000 000000c0000bc900 000000c00029abd0