Debian GNU/Linux 11 syzkaller ttyS0
Warning: Permanently added '[localhost]:56535' (ECDSA) to the list of known hosts.
2021/12/06 11:28:51 fuzzer started
2021/12/06 11:28:52 dialing manager at localhost:35719
2021/12/06 11:28:52 checking machine...
2021/12/06 11:28:52 checking revisions...
syzkaller login: [ 28.177618] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:28:52 testing simple program...
[ 28.217791] cgroup: Unknown subsys name 'net'
[ 28.219464] cgroup: Unknown subsys name 'net_prio'
[ 28.220907] cgroup: Unknown subsys name 'devices'
[ 28.222302] cgroup: Unknown subsys name 'blkio'
[ 28.239735]
[ 28.240110] =========================
[ 28.240852] WARNING: held lock freed!
[ 28.241579] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 28.242727] -------------------------
[ 28.243809] kworker/0:1/10 is freeing memory ffff88800ed52800-ffff88800ed529ff, with a lock still held there!
[ 28.245919] ffff88800ed52948 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 28.247658] 3 locks held by kworker/0:1/10:
[ 28.248492] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 28.250510] #1: ffff888008197da8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 28.252824] #2: ffff88800ed52948 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 28.254623]
[ 28.254623] stack backtrace:
[ 28.255486] CPU: 0 PID: 10 Comm: kworker/0:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 28.257010] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 28.259216] Workqueue: cgroup_destroy css_free_rwork_fn
[ 28.260259] Call Trace:
[ 28.260783]
[ 28.261218] dump_stack_lvl+0x8b/0xb3
[ 28.261965] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 28.262992] ? kernfs_put.part.0+0x334/0x540
[ 28.263852] kfree+0xb3/0x5a0
[ 28.264462] ? kmem_cache_free+0xce/0x640
[ 28.265280] kernfs_put.part.0+0x334/0x540
[ 28.266111] kernfs_put+0x42/0x50
[ 28.266783] __kernfs_remove+0x7ce/0xb00
[ 28.267579] ? lock_is_held_type+0xd7/0x130
[ 28.268422] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 28.269449] ? down_write+0xde/0x150
[ 28.270175] ? down_write_killable_nested+0x180/0x180
[ 28.271179] kernfs_destroy_root+0x89/0xb0
[ 28.272001] css_free_rwork_fn+0xa28/0xf40
[ 28.272851] process_one_work+0xa30/0x1710
[ 28.273683] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 28.274593] ? rwlock_bug.part.0+0x90/0x90
[ 28.275416] ? _raw_spin_lock_irq+0x41/0x50
[ 28.276257] worker_thread+0x62a/0x13e0
[ 28.277046] ? process_one_work+0x1710/0x1710
[ 28.277919] kthread+0x40c/0x500
[ 28.278575] ? set_kthread_struct+0x130/0x130
[ 28.279446] ret_from_fork+0x22/0x30
[ 28.280177]
[ 28.280728] ==================================================================
[ 28.282135] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 28.283283] Read of size 8 at addr ffff88800ed52940 by task kworker/0:1/10
[ 28.284630]
[ 28.284949] CPU: 0 PID: 10 Comm: kworker/0:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 28.286453] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 28.288667] Workqueue: cgroup_destroy css_free_rwork_fn
[ 28.289712] Call Trace:
[ 28.290209]
[ 28.290640] dump_stack_lvl+0x8b/0xb3
[ 28.291381] print_address_description.constprop.0+0x1f/0x180
[ 28.292526] ? up_write+0x3ac/0x460
[ 28.293231] ? up_write+0x3ac/0x460
[ 28.293934] kasan_report.cold+0x7f/0x11b
[ 28.294744] ? up_write+0x3ac/0x460
[ 28.295449] up_write+0x3ac/0x460
[ 28.296127] css_free_rwork_fn+0xa28/0xf40
[ 28.296977] process_one_work+0xa30/0x1710
[ 28.297808] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 28.298724] ? rwlock_bug.part.0+0x90/0x90
[ 28.299554] ? _raw_spin_lock_irq+0x41/0x50
[ 28.300384] worker_thread+0x62a/0x13e0
[ 28.301190] ? process_one_work+0x1710/0x1710
[ 28.302037] kthread+0x40c/0x500
[ 28.302668] ? set_kthread_struct+0x130/0x130
[ 28.303540] ret_from_fork+0x22/0x30
[ 28.304269]
[ 28.304742]
[ 28.305061] Allocated by task 279:
[ 28.305739] kasan_save_stack+0x1e/0x40
[ 28.306493] __kasan_kmalloc+0x81/0xa0
[ 28.307265] kernfs_create_root+0x4c/0x410
[ 28.308105] cgroup_setup_root+0x346/0xb60
[ 28.308984] cgroup1_get_tree+0xc1b/0x1370
[ 28.309835] vfs_get_tree+0x8e/0x2f0
[ 28.310588] path_mount+0x131b/0x1f80
[ 28.311383] __x64_sys_mount+0x27e/0x300
[ 28.312222] do_syscall_64+0x3b/0x90
[ 28.313009] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 28.314078]
[ 28.314415] Freed by task 10:
[ 28.315048] kasan_save_stack+0x1e/0x40
[ 28.315874] kasan_set_track+0x21/0x30
[ 28.316705] kasan_set_free_info+0x20/0x30
[ 28.317589] __kasan_slab_free+0x108/0x170
[ 28.318468] kfree+0xc5/0x5a0
[ 28.319114] kernfs_put.part.0+0x334/0x540
[ 28.320020] kernfs_put+0x42/0x50
[ 28.320764] __kernfs_remove+0x7ce/0xb00
[ 28.321625] kernfs_destroy_root+0x89/0xb0
[ 28.322517] css_free_rwork_fn+0xa28/0xf40
[ 28.323414] process_one_work+0xa30/0x1710
[ 28.324306] worker_thread+0x62a/0x13e0
[ 28.325156] kthread+0x40c/0x500
[ 28.325871] ret_from_fork+0x22/0x30
[ 28.326656]
[ 28.327003] Last potentially related work creation:
[ 28.328039] kasan_save_stack+0x1e/0x40
[ 28.328898] __kasan_record_aux_stack+0x97/0xa0
[ 28.329883] kvfree_call_rcu+0x2c/0x7a0
[ 28.330732] put_css_set_locked+0x7e6/0xcf0
[ 28.331635] cgroup_free+0x8f/0x1b0
[ 28.332408] __put_task_struct+0x113/0x3e0
[ 28.333278] delayed_put_task_struct+0x1ca/0x2f0
[ 28.334241] rcu_core+0x7e9/0x1ce0
[ 28.334953] __do_softirq+0x270/0x8c7
[ 28.335719]
[ 28.336046] The buggy address belongs to the object at ffff88800ed52800
[ 28.336046] which belongs to the cache kmalloc-512 of size 512
[ 28.338562] The buggy address is located 320 bytes inside of
[ 28.338562] 512-byte region [ffff88800ed52800, ffff88800ed52a00)
[ 28.341037] The buggy address belongs to the page:
[ 28.342055] page:00000000a03173e7 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xed50
[ 28.344005] head:00000000a03173e7 order:2 compound_mapcount:0 compound_pincount:0
[ 28.345526] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 28.346725] raw: 0100000000010200 ffffea00003a2600 dead000000000002 ffff888007841c80
[ 28.348278] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
[ 28.349875] page dumped because: kasan: bad access detected
[ 28.351013]
[ 28.351350] Memory state around the buggy address:
[ 28.352360] ffff88800ed52800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 28.353894] ffff88800ed52880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 28.355382] >ffff88800ed52900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 28.356853] ^
[ 28.357964] ffff88800ed52980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 28.359456] ffff88800ed52a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 28.360938] ==================================================================
[ 28.406654] cgroup: Unknown subsys name 'hugetlb'
[ 28.408448] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:28:52 Registers:
info registers vcpu 0
RAX=000000000000005d RBX=00000000000003f8 RCX=0000000000000000 RDX=00000000000003f8
RSI=ffffffff823640e1 RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff888008197648
R8 =0000000000000000 R9 =000000000000005d R10=ffffffff82365d23 R11=000000000000000a
R12=000000000000005d R13=000000000000005d 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 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=00007ffe587f6e78 CR3=000000001af5a000 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=00007fdabf80b5e0 CR3=000000001af5a000 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 4141f009f6810f84
YMM01=0000000000000000 0000000000000000 0000000000000000 3f847ae147ae147b
YMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM03=0000000000000000 0000000000000000 0000000000000000 3f73f9d4e99494df
YMM04=0000000000000000 0000000000000000 00007f4ef9b1e500 0000000000415710
YMM05=0000000000000000 0000000000000000 00000000009b1060 000000c000098df0
YMM06=0000000000000000 0000000000000000 0000000000505007 000000c00041dfc0
YMM07=0000000000000000 0000000000000000 0000000040046205 000000000000000b
YMM08=0000000000000000 0000000000000000 0000000000000001 0000000000000009
YMM09=0000000000000000 0000000000000000 00000000004643c1 0000000000000000
YMM10=0000000000000000 0000000000000000 000000c000386860 000000c000382580
YMM11=0000000000000000 0000000000000000 0000000000000000 0000000000000001
YMM12=0000000000000000 0000000000000000 00000000009ce8c4 000000000031f4f7
YMM13=0000000000000000 0000000000000000 000000c0002966f0 000000c000088050
YMM14=0000000000000000 0000000000000000 000000c000296ba0 000000c00008e150
YMM15=0000000000000000 0000000000000000 000000c0000b0900 000000c000296bd0