Warning: Permanently added '[localhost]:1773' (ECDSA) to the list of known hosts.
2021/12/06 11:28:27 fuzzer started
2021/12/06 11:28:27 dialing manager at localhost:35719
2021/12/06 11:28:27 checking machine...
2021/12/06 11:28:27 checking revisions...
syzkaller login: [ 34.766136] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:28:27 testing simple program...
[ 34.806958] cgroup: Unknown subsys name 'net'
[ 34.808458] cgroup: Unknown subsys name 'net_prio'
[ 34.810319] cgroup: Unknown subsys name 'devices'
[ 34.812050] cgroup: Unknown subsys name 'blkio'
[ 34.836635]
[ 34.837051] =========================
[ 34.837910] WARNING: held lock freed!
[ 34.838791] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 34.839912] -------------------------
[ 34.841078] kworker/0:1/10 is freeing memory ffff88800e9c2c00-ffff88800e9c2dff, with a lock still held there!
[ 34.843284] ffff88800e9c2d48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 34.844981] 3 locks held by kworker/0:1/10:
[ 34.845801] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 34.847792] #1: ffff888008197da8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 34.850057] #2: ffff88800e9c2d48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 34.851846]
[ 34.851846] stack backtrace:
[ 34.852706] CPU: 0 PID: 10 Comm: kworker/0:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 34.854263] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 34.856539] Workqueue: cgroup_destroy css_free_rwork_fn
[ 34.857612] Call Trace:
[ 34.858126]
[ 34.858591] dump_stack_lvl+0x8b/0xb3
[ 34.859363] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 34.860434] ? kernfs_put.part.0+0x334/0x540
[ 34.861329] kfree+0xb3/0x5a0
[ 34.861955] ? kmem_cache_free+0xce/0x640
[ 34.862792] kernfs_put.part.0+0x334/0x540
[ 34.863633] kernfs_put+0x42/0x50
[ 34.864306] __kernfs_remove+0x7ce/0xb00
[ 34.865097] ? lock_is_held_type+0xd7/0x130
[ 34.865943] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 34.866983] ? down_write+0xde/0x150
[ 34.867708] ? down_write_killable_nested+0x180/0x180
[ 34.868719] kernfs_destroy_root+0x89/0xb0
[ 34.869543] css_free_rwork_fn+0xa28/0xf40
[ 34.870376] process_one_work+0xa30/0x1710
[ 34.871207] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 34.872116] ? rwlock_bug.part.0+0x90/0x90
[ 34.872943] ? _raw_spin_lock_irq+0x41/0x50
[ 34.873788] worker_thread+0x62a/0x13e0
[ 34.874577] ? process_one_work+0x1710/0x1710
[ 34.875454] kthread+0x40c/0x500
[ 34.876114] ? set_kthread_struct+0x130/0x130
[ 34.876987] ret_from_fork+0x22/0x30
[ 34.877721]
[ 34.878214] ==================================================================
[ 34.879654] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 34.880846] Read of size 8 at addr ffff88800e9c2d40 by task kworker/0:1/10
[ 34.882232]
[ 34.882557] CPU: 0 PID: 10 Comm: kworker/0:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 34.884092] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 34.886339] Workqueue: cgroup_destroy css_free_rwork_fn
[ 34.887384] Call Trace:
[ 34.887885]
[ 34.888318] dump_stack_lvl+0x8b/0xb3
[ 34.889055] print_address_description.constprop.0+0x1f/0x180
[ 34.890190] ? up_write+0x3ac/0x460
[ 34.890911] ? up_write+0x3ac/0x460
[ 34.891616] kasan_report.cold+0x7f/0x11b
[ 34.892428] ? up_write+0x3ac/0x460
[ 34.893137] up_write+0x3ac/0x460
[ 34.893806] css_free_rwork_fn+0xa28/0xf40
[ 34.894649] process_one_work+0xa30/0x1710
[ 34.895473] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 34.896382] ? rwlock_bug.part.0+0x90/0x90
[ 34.897207] ? _raw_spin_lock_irq+0x41/0x50
[ 34.898074] worker_thread+0x62a/0x13e0
[ 34.898883] ? process_one_work+0x1710/0x1710
[ 34.899782] kthread+0x40c/0x500
[ 34.900459] ? set_kthread_struct+0x130/0x130
[ 34.901351] ret_from_fork+0x22/0x30
[ 34.902099]
[ 34.902579]
[ 34.902900] Allocated by task 282:
[ 34.903616] kasan_save_stack+0x1e/0x40
[ 34.904410] __kasan_kmalloc+0x81/0xa0
[ 34.905185] kernfs_create_root+0x4c/0x410
[ 34.906016] cgroup_setup_root+0x346/0xb60
[ 34.906857] cgroup1_get_tree+0xc1b/0x1370
[ 34.907699] vfs_get_tree+0x8e/0x2f0
[ 34.908438] path_mount+0x131b/0x1f80
[ 34.909188] __x64_sys_mount+0x27e/0x300
[ 34.909985] do_syscall_64+0x3b/0x90
[ 34.910732] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 34.911731]
[ 34.912044] Freed by task 10:
[ 34.912651] kasan_save_stack+0x1e/0x40
[ 34.913434] kasan_set_track+0x21/0x30
[ 34.914199] kasan_set_free_info+0x20/0x30
[ 34.915034] __kasan_slab_free+0x108/0x170
[ 34.915873] kfree+0xc5/0x5a0
[ 34.916493] kernfs_put.part.0+0x334/0x540
[ 34.917335] kernfs_put+0x42/0x50
[ 34.918012] __kernfs_remove+0x7ce/0xb00
[ 34.918819] kernfs_destroy_root+0x89/0xb0
[ 34.919665] css_free_rwork_fn+0xa28/0xf40
[ 34.920508] process_one_work+0xa30/0x1710
[ 34.921353] worker_thread+0x62a/0x13e0
[ 34.922132] kthread+0x40c/0x500
[ 34.922818] ret_from_fork+0x22/0x30
[ 34.923556]
[ 34.923877] The buggy address belongs to the object at ffff88800e9c2c00
[ 34.923877] which belongs to the cache kmalloc-512 of size 512
[ 34.926305] The buggy address is located 320 bytes inside of
[ 34.926305] 512-byte region [ffff88800e9c2c00, ffff88800e9c2e00)
[ 34.928579] The buggy address belongs to the page:
[ 34.929535] page:0000000055e067ba refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe9c0
[ 34.931346] head:0000000055e067ba order:2 compound_mapcount:0 compound_pincount:0
[ 34.932828] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 34.933984] raw: 0100000000010200 0000000000000000 dead000000000001 ffff888007841c80
[ 34.935531] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
[ 34.937067] page dumped because: kasan: bad access detected
[ 34.938169]
[ 34.938502] Memory state around the buggy address:
[ 34.939464] ffff88800e9c2c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.940900] ffff88800e9c2c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.942340] >ffff88800e9c2d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.943761] ^
[ 34.944814] ffff88800e9c2d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.946238] ffff88800e9c2e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 34.947683] ==================================================================
[ 34.981959] cgroup: Unknown subsys name 'hugetlb'
[ 34.984401] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:28:28 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=000000c00067f000 CR3=000000000d048000 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=00007f30c279e6d0 CR3=00000000093b0000 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 7465677261742e79 636e656772656d65
YMM02=0000000000000000 0000000000000000 ffffffffffffffff 0f0e0d0c0b0a0908
YMM03=0000000000000000 0000000000000000 0000000000000073 66626c7465677568
YMM04=0000000000000000 0000000000000000 2e2e2e2e2e2e2e2e 2e2e2e2e2e2e2e2e
YMM05=0000000000000000 0000000000000000 612d312e31303a30 303a303030302d69
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