Warning: Permanently added '[localhost]:27240' (ECDSA) to the list of known hosts.
2021/12/06 11:37:49 fuzzer started
2021/12/06 11:37:49 dialing manager at localhost:35719
2021/12/06 11:37:49 checking machine...
2021/12/06 11:37:49 checking revisions...
syzkaller login: [ 35.384677] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:37:49 testing simple program...
[ 35.428695] cgroup: Unknown subsys name 'net'
[ 35.430100] cgroup: Unknown subsys name 'net_prio'
[ 35.432068] cgroup: Unknown subsys name 'devices'
[ 35.433501] cgroup: Unknown subsys name 'blkio'
[ 35.453469]
[ 35.453810] =========================
[ 35.454559] WARNING: held lock freed!
[ 35.455294] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 35.456393] -------------------------
[ 35.457875] kworker/1:1/31 is freeing memory ffff88800862c400-ffff88800862c5ff, with a lock still held there!
[ 35.459823] ffff88800862c548 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.461581] 3 locks held by kworker/1:1/31:
[ 35.462418] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 35.464455] #1: ffff88800830fda8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 35.466792] #2: ffff88800862c548 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.468620]
[ 35.468620] stack backtrace:
[ 35.469517] CPU: 1 PID: 31 Comm: kworker/1:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.471046] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.473261] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.474303] Call Trace:
[ 35.474808]
[ 35.475246] dump_stack_lvl+0x8b/0xb3
[ 35.476004] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 35.477055] ? kernfs_put.part.0+0x334/0x540
[ 35.477948] kfree+0xb3/0x5a0
[ 35.478564] ? kmem_cache_free+0xce/0x640
[ 35.479373] kernfs_put.part.0+0x334/0x540
[ 35.480198] kernfs_put+0x42/0x50
[ 35.480866] __kernfs_remove+0x7ce/0xb00
[ 35.481670] ? lock_is_held_type+0xd7/0x130
[ 35.482504] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 35.483517] ? down_write+0xde/0x150
[ 35.484231] ? down_write_killable_nested+0x180/0x180
[ 35.485243] kernfs_destroy_root+0x89/0xb0
[ 35.486060] css_free_rwork_fn+0xa28/0xf40
[ 35.486878] process_one_work+0xa30/0x1710
[ 35.487698] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.488596] ? rwlock_bug.part.0+0x90/0x90
[ 35.489432] ? _raw_spin_lock_irq+0x41/0x50
[ 35.490264] worker_thread+0x62a/0x13e0
[ 35.491036] ? process_one_work+0x1710/0x1710
[ 35.491905] kthread+0x40c/0x500
[ 35.492556] ? set_kthread_struct+0x130/0x130
[ 35.493440] ret_from_fork+0x22/0x30
[ 35.494170]
[ 35.494695] ==================================================================
[ 35.496096] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 35.497246] Read of size 8 at addr ffff88800862c540 by task kworker/1:1/31
[ 35.498576]
[ 35.498892] CPU: 1 PID: 31 Comm: kworker/1:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.500384] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.502579] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.503613] Call Trace:
[ 35.504106]
[ 35.504533] dump_stack_lvl+0x8b/0xb3
[ 35.505287] print_address_description.constprop.0+0x1f/0x180
[ 35.506418] ? up_write+0x3ac/0x460
[ 35.507117] ? up_write+0x3ac/0x460
[ 35.507825] kasan_report.cold+0x7f/0x11b
[ 35.508637] ? up_write+0x3ac/0x460
[ 35.509348] up_write+0x3ac/0x460
[ 35.510021] css_free_rwork_fn+0xa28/0xf40
[ 35.510848] process_one_work+0xa30/0x1710
[ 35.511679] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.512589] ? rwlock_bug.part.0+0x90/0x90
[ 35.513423] ? _raw_spin_lock_irq+0x41/0x50
[ 35.514266] worker_thread+0x62a/0x13e0
[ 35.515046] ? process_one_work+0x1710/0x1710
[ 35.515921] kthread+0x40c/0x500
[ 35.516571] ? set_kthread_struct+0x130/0x130
[ 35.517457] ret_from_fork+0x22/0x30
[ 35.518188]
[ 35.518634]
[ 35.518950] Allocated by task 282:
[ 35.519621] kasan_save_stack+0x1e/0x40
[ 35.520384] __kasan_kmalloc+0x81/0xa0
[ 35.521167] kernfs_create_root+0x4c/0x410
[ 35.521978] cgroup_setup_root+0x346/0xb60
[ 35.522796] cgroup1_get_tree+0xc1b/0x1370
[ 35.523609] vfs_get_tree+0x8e/0x2f0
[ 35.524326] path_mount+0x131b/0x1f80
[ 35.525082] __x64_sys_mount+0x27e/0x300
[ 35.525866] do_syscall_64+0x3b/0x90
[ 35.526579] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 35.527571]
[ 35.527882] Freed by task 31:
[ 35.528475] kasan_save_stack+0x1e/0x40
[ 35.529244] kasan_set_track+0x21/0x30
[ 35.529993] kasan_set_free_info+0x20/0x30
[ 35.530811] __kasan_slab_free+0x108/0x170
[ 35.531619] kfree+0xc5/0x5a0
[ 35.532215] kernfs_put.part.0+0x334/0x540
[ 35.533039] kernfs_put+0x42/0x50
[ 35.533699] __kernfs_remove+0x7ce/0xb00
[ 35.534473] kernfs_destroy_root+0x89/0xb0
[ 35.535284] css_free_rwork_fn+0xa28/0xf40
[ 35.536105] process_one_work+0xa30/0x1710
[ 35.536942] worker_thread+0x62a/0x13e0
[ 35.537711] kthread+0x40c/0x500
[ 35.538361] ret_from_fork+0x22/0x30
[ 35.539081]
[ 35.539399] The buggy address belongs to the object at ffff88800862c400
[ 35.539399] which belongs to the cache kmalloc-512 of size 512
[ 35.541806] The buggy address is located 320 bytes inside of
[ 35.541806] 512-byte region [ffff88800862c400, ffff88800862c600)
[ 35.544050] The buggy address belongs to the page:
[ 35.544996] page:00000000a1825017 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x862c
[ 35.546775] head:00000000a1825017 order:2 compound_mapcount:0 compound_pincount:0
[ 35.548222] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 35.549383] raw: 0100000000010200 ffffea0000360e00 dead000000000002 ffff888007841c80
[ 35.550880] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
[ 35.552366] page dumped because: kasan: bad access detected
[ 35.553456]
[ 35.553776] Memory state around the buggy address:
[ 35.554718] ffff88800862c400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.556139] ffff88800862c480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.557567] >ffff88800862c500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.558984] ^
[ 35.560031] ffff88800862c580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.561463] ffff88800862c600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 35.562866] ==================================================================
[ 35.610342] cgroup: Unknown subsys name 'hugetlb'
[ 35.612025] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:37:49 Registers:
info registers vcpu 0
RAX=0000000080010001 RBX=0000000000000000 RCX=0000000000000001 RDX=0000000000000000
RSI=ffffffff85032600 RDI=0000000000000003 RBP=ffff88806ce2b120 RSP=ffff88806ce09de0
R8 =00000000ffffffff R9 =ffffffff858bd8d7 R10=ffffffff81370687 R11=0000000000000001
R12=0000000839e11208 R13=ffffffff85007d98 R14=0000000000000001 R15=0000000000000001
RIP=ffffffff81431277 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 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=00007f7eea364dd0 CR3=000000001b28c000 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 41401095617da14d
YMM01=0000000000000000 0000000000000000 0000000000000000 3f847ae147ae147b
YMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM03=0000000000000000 0000000000000000 0000000000000000 3f73ea1d7a8db13c
YMM04=0000000000000000 0000000000000000 00007f53562a8600 0000000000415710
YMM05=0000000000000000 0000000000000000 0000000000b12758 000000c0000ae998
YMM06=0000000000000000 0000000000000000 0000000000505007 000000c00002a7c0
YMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM08=0000000000000000 0000000000000000 00000000004643c6 0000000000000000
YMM09=0000000000000000 0000000000000000 00000000004643c1 0000000000000000
YMM10=0000000000000000 0000000000000000 000000c00000c260 000000c000192580
YMM11=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM12=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM13=0000000000000000 0000000000000000 000000c0000ee6c0 000000c0000ee690
YMM14=0000000000000000 0000000000000000 000000c0000ee720 000000c0000ee6f0
YMM15=0000000000000000 0000000000000000 000000c0000e1a20 000000c00008e210
info registers vcpu 1
RAX=dffffc0000000060 RBX=00000000000003fd RCX=0000000000000000 RDX=00000000000003fd
RSI=ffffffff8236405c RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff88800830f5f0
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 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=00007fffc6f53ff8 CR3=000000001b28c000 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 0000000000000000
YMM01=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM02=0000000000000000 0000000000000000 0000000000000000 4110164000000000
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