Warning: Permanently added '[localhost]:7941' (ECDSA) to the list of known hosts.
2021/12/06 11:22:44 fuzzer started
2021/12/06 11:22:44 dialing manager at localhost:35719
2021/12/06 11:22:44 checking machine...
2021/12/06 11:22:44 checking revisions...
syzkaller login: [ 36.269799] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:22:44 testing simple program...
[ 36.326854] cgroup: Unknown subsys name 'net'
[ 36.328961] cgroup: Unknown subsys name 'net_prio'
[ 36.331141] cgroup: Unknown subsys name 'devices'
[ 36.332104] cgroup: Unknown subsys name 'blkio'
[ 36.355032]
[ 36.355313] =========================
[ 36.355783] WARNING: held lock freed!
[ 36.356258] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 36.356913] -------------------------
[ 36.357392] kworker/0:1/10 is freeing memory ffff88800e8a3400-ffff88800e8a35ff, with a lock still held there!
[ 36.358638] ffff88800e8a3548 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 36.359803] 3 locks held by kworker/0:1/10:
[ 36.360327] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 36.362454] #1: ffff888008197da8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 36.364042] #2: ffff88800e8a3548 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 36.365833]
[ 36.365833] stack backtrace:
[ 36.366492] CPU: 0 PID: 10 Comm: kworker/0:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 36.376292] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 36.378059] Workqueue: cgroup_destroy css_free_rwork_fn
[ 36.379234] Call Trace:
[ 36.379591]
[ 36.379882] dump_stack_lvl+0x8b/0xb3
[ 36.380474] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 36.381358] ? kernfs_put.part.0+0x334/0x540
[ 36.381950] kfree+0xb3/0x5a0
[ 36.382406] ? kmem_cache_free+0xce/0x640
[ 36.382982] kernfs_put.part.0+0x334/0x540
[ 36.385693] kernfs_put+0x42/0x50
[ 36.386182] __kernfs_remove+0x7ce/0xb00
[ 36.386685] ? lock_is_held_type+0xd7/0x130
[ 36.387321] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 36.387968] ? down_write+0xde/0x150
[ 36.388479] ? down_write_killable_nested+0x180/0x180
[ 36.389275] kernfs_destroy_root+0x89/0xb0
[ 36.389819] css_free_rwork_fn+0xa28/0xf40
[ 36.390431] process_one_work+0xa30/0x1710
[ 36.406973] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 36.407585] ? rwlock_bug.part.0+0x90/0x90
[ 36.408167] ? _raw_spin_lock_irq+0x41/0x50
[ 36.408778] worker_thread+0x62a/0x13e0
[ 36.409259] ? process_one_work+0x1710/0x1710
[ 36.409801] kthread+0x40c/0x500
[ 36.410240] ? set_kthread_struct+0x130/0x130
[ 36.410862] ret_from_fork+0x22/0x30
[ 36.411352]
[ 36.411855] ==================================================================
[ 36.412799] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 36.413545] Read of size 8 at addr ffff88800e8a3540 by task kworker/0:1/10
[ 36.414429]
[ 36.414634] CPU: 0 PID: 10 Comm: kworker/0:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 36.415655] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 36.417152] Workqueue: cgroup_destroy css_free_rwork_fn
[ 36.417856] Call Trace:
[ 36.418181]
[ 36.418463] dump_stack_lvl+0x8b/0xb3
[ 36.419013] print_address_description.constprop.0+0x1f/0x180
[ 36.419788] ? up_write+0x3ac/0x460
[ 36.420245] ? up_write+0x3ac/0x460
[ 36.420727] kasan_report.cold+0x7f/0x11b
[ 36.421236] ? up_write+0x3ac/0x460
[ 36.423075] up_write+0x3ac/0x460
[ 36.423509] css_free_rwork_fn+0xa28/0xf40
[ 36.424085] process_one_work+0xa30/0x1710
[ 36.424654] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 36.425257] ? rwlock_bug.part.0+0x90/0x90
[ 36.425814] ? _raw_spin_lock_irq+0x41/0x50
[ 36.426363] worker_thread+0x62a/0x13e0
[ 36.426886] ? process_one_work+0x1710/0x1710
[ 36.427437] kthread+0x40c/0x500
[ 36.427899] ? set_kthread_struct+0x130/0x130
[ 36.428454] ret_from_fork+0x22/0x30
[ 36.428946]
[ 36.429230]
[ 36.429431] Allocated by task 280:
[ 36.429902] kasan_save_stack+0x1e/0x40
[ 36.430394] __kasan_kmalloc+0x81/0xa0
[ 36.430906] kernfs_create_root+0x4c/0x410
[ 36.431423] cgroup_setup_root+0x346/0xb60
[ 36.431943] cgroup1_get_tree+0xc1b/0x1370
[ 36.432466] vfs_get_tree+0x8e/0x2f0
[ 36.432986] path_mount+0x131b/0x1f80
[ 36.433456] __x64_sys_mount+0x27e/0x300
[ 36.433966] do_syscall_64+0x3b/0x90
[ 36.434427] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 36.435113]
[ 36.435326] Freed by task 10:
[ 36.435732] kasan_save_stack+0x1e/0x40
[ 36.436236] kasan_set_track+0x21/0x30
[ 36.436766] kasan_set_free_info+0x20/0x30
[ 36.437333] __kasan_slab_free+0x108/0x170
[ 36.437891] kfree+0xc5/0x5a0
[ 36.438288] kernfs_put.part.0+0x334/0x540
[ 36.438832] kernfs_put+0x42/0x50
[ 36.439267] __kernfs_remove+0x7ce/0xb00
[ 36.439803] kernfs_destroy_root+0x89/0xb0
[ 36.440359] css_free_rwork_fn+0xa28/0xf40
[ 36.440963] process_one_work+0xa30/0x1710
[ 36.441485] worker_thread+0x62a/0x13e0
[ 36.442023] kthread+0x40c/0x500
[ 36.442450] ret_from_fork+0x22/0x30
[ 36.442916]
[ 36.443109] The buggy address belongs to the object at ffff88800e8a3400
[ 36.443109] which belongs to the cache kmalloc-512 of size 512
[ 36.444823] The buggy address is located 320 bytes inside of
[ 36.444823] 512-byte region [ffff88800e8a3400, ffff88800e8a3600)
[ 36.446241] The buggy address belongs to the page:
[ 36.446865] page:00000000eff63eaa refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe8a0
[ 36.447960] head:00000000eff63eaa order:2 compound_mapcount:0 compound_pincount:0
[ 36.448936] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 36.449663] raw: 0100000000010200 0000000000000000 dead000000000001 ffff888007841c80
[ 36.450615] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
[ 36.451603] page dumped because: kasan: bad access detected
[ 36.452331]
[ 36.452534] Memory state around the buggy address:
[ 36.453180] ffff88800e8a3400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.454110] ffff88800e8a3480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.455041] >ffff88800e8a3500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.455973] ^
[ 36.456656] ffff88800e8a3580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.457621] ffff88800e8a3600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 36.458552] ==================================================================
[ 36.481891] cgroup: Unknown subsys name 'hugetlb'
[ 36.482757] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:22:45 Registers:
info registers vcpu 0
RAX=dffffc0000000060 RBX=00000000000003fd RCX=0000000000000000 RDX=00000000000003fd
RSI=ffffffff8236405c RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff8880081974e0
R8 =0000000000000039 R9 =000000000000005d 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=00007f7704f6e000 CR3=0000000017f32000 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 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
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=00007f7704e9f690 CR3=000000000ea82000 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 8adbe84567ccca91 9f4f01ae6ce82b87
YMM02=0000000000000000 0000000000000000 e45775b7bd281a64 0000000000116168
YMM03=0000000000000000 0000000000000000 698e0f81b0932b79 000000000012c150
YMM04=0000000000000000 0000000000000000 09e1b6cb05e85892 00000000000ae980
YMM05=0000000000000000 0000000000000000 9ebfcf3a7e7141ea 000000000012c218
YMM06=0000000000000000 0000000000000000 698e0f81b0932b79 000000000012c150
YMM07=0000000000000000 0000000000000000 e45775b7bd281a64 0000000000116168
YMM08=0000000000000000 0000000000000000 e2de77aa903facfa 00000000001160b8
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