Debian GNU/Linux 11 syzkaller ttyS0
Warning: Permanently added '[localhost]:60424' (ECDSA) to the list of known hosts.
2021/12/06 11:23:16 fuzzer started
2021/12/06 11:23:17 dialing manager at localhost:35719
2021/12/06 11:23:17 checking machine...
2021/12/06 11:23:17 checking revisions...
syzkaller login: [ 35.731273] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:23:17 testing simple program...
[ 35.774999] cgroup: Unknown subsys name 'net'
[ 35.776091] cgroup: Unknown subsys name 'net_prio'
[ 35.777720] cgroup: Unknown subsys name 'devices'
[ 35.778520] cgroup: Unknown subsys name 'blkio'
[ 35.816496]
[ 35.816780] =========================
[ 35.817238] WARNING: held lock freed!
[ 35.817698] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 35.818313] -------------------------
[ 35.818800] kworker/0:1/10 is freeing memory ffff88800e53a000-ffff88800e53a1ff, with a lock still held there!
[ 35.830895] ffff88800e53a148 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.855468] 3 locks held by kworker/0:1/10:
[ 35.856005] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 35.857316] #1: ffff888008197da8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 35.858820] #2: ffff88800e53a148 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.859989]
[ 35.859989] stack backtrace:
[ 35.860576] CPU: 0 PID: 10 Comm: kworker/0:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.861532] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.862983] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.863645] Call Trace:
[ 35.863969]
[ 35.864266] dump_stack_lvl+0x8b/0xb3
[ 35.864741] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 35.865448] ? kernfs_put.part.0+0x334/0x540
[ 35.865998] kfree+0xb3/0x5a0
[ 35.866413] ? kmem_cache_free+0xce/0x640
[ 35.866952] kernfs_put.part.0+0x334/0x540
[ 35.867536] kernfs_put+0x42/0x50
[ 35.867967] __kernfs_remove+0x7ce/0xb00
[ 35.868506] ? lock_is_held_type+0xd7/0x130
[ 35.869044] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 35.869737] ? down_write+0xde/0x150
[ 35.870189] ? down_write_killable_nested+0x180/0x180
[ 35.870966] kernfs_destroy_root+0x89/0xb0
[ 35.871512] css_free_rwork_fn+0xa28/0xf40
[ 35.872030] process_one_work+0xa30/0x1710
[ 35.872600] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.873182] ? rwlock_bug.part.0+0x90/0x90
[ 35.873733] ? _raw_spin_lock_irq+0x41/0x50
[ 35.874270] worker_thread+0x62a/0x13e0
[ 35.874791] ? process_one_work+0x1710/0x1710
[ 35.875354] kthread+0x40c/0x500
[ 35.875769] ? set_kthread_struct+0x130/0x130
[ 35.876319] ret_from_fork+0x22/0x30
[ 35.876783]
[ 35.877202] ==================================================================
[ 35.878082] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 35.882861] Read of size 8 at addr ffff88800e53a140 by task kworker/0:1/10
[ 35.883743]
[ 35.883944] CPU: 0 PID: 10 Comm: kworker/0:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.884917] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.886335] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.887030] Call Trace:
[ 35.887378]
[ 35.887654] dump_stack_lvl+0x8b/0xb3
[ 35.888126] print_address_description.constprop.0+0x1f/0x180
[ 35.888901] ? up_write+0x3ac/0x460
[ 35.889372] ? up_write+0x3ac/0x460
[ 35.889816] kasan_report.cold+0x7f/0x11b
[ 35.890335] ? up_write+0x3ac/0x460
[ 35.890823] up_write+0x3ac/0x460
[ 35.891251] css_free_rwork_fn+0xa28/0xf40
[ 35.891767] process_one_work+0xa30/0x1710
[ 35.892290] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.892860] ? rwlock_bug.part.0+0x90/0x90
[ 35.893406] ? _raw_spin_lock_irq+0x41/0x50
[ 35.893960] worker_thread+0x62a/0x13e0
[ 35.894569] ? process_one_work+0x1710/0x1710
[ 35.895116] kthread+0x40c/0x500
[ 35.895581] ? set_kthread_struct+0x130/0x130
[ 35.896135] ret_from_fork+0x22/0x30
[ 35.896637]
[ 35.896922]
[ 35.897123] Allocated by task 279:
[ 35.897583] kasan_save_stack+0x1e/0x40
[ 35.898066] __kasan_kmalloc+0x81/0xa0
[ 35.898572] kernfs_create_root+0x4c/0x410
[ 35.899081] cgroup_setup_root+0x346/0xb60
[ 35.899640] cgroup1_get_tree+0xc1b/0x1370
[ 35.900161] vfs_get_tree+0x8e/0x2f0
[ 35.900619] path_mount+0x131b/0x1f80
[ 35.901090] __x64_sys_mount+0x27e/0x300
[ 35.901623] do_syscall_64+0x3b/0x90
[ 35.902083] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 35.902779]
[ 35.902981] Freed by task 10:
[ 35.903388] kasan_save_stack+0x1e/0x40
[ 35.903875] kasan_set_track+0x21/0x30
[ 35.904372] kasan_set_free_info+0x20/0x30
[ 35.904924] __kasan_slab_free+0x108/0x170
[ 35.905460] kfree+0xc5/0x5a0
[ 35.905841] kernfs_put.part.0+0x334/0x540
[ 35.906380] kernfs_put+0x42/0x50
[ 35.910860] __kernfs_remove+0x7ce/0xb00
[ 35.911357] kernfs_destroy_root+0x89/0xb0
[ 35.911911] css_free_rwork_fn+0xa28/0xf40
[ 35.912469] process_one_work+0xa30/0x1710
[ 35.912989] worker_thread+0x62a/0x13e0
[ 35.913506] kthread+0x40c/0x500
[ 35.913928] ret_from_fork+0x22/0x30
[ 35.914419]
[ 35.914644] The buggy address belongs to the object at ffff88800e53a000
[ 35.914644] which belongs to the cache kmalloc-512 of size 512
[ 35.916178] The buggy address is located 320 bytes inside of
[ 35.916178] 512-byte region [ffff88800e53a000, ffff88800e53a200)
[ 35.917625] The buggy address belongs to the page:
[ 35.918210] page:00000000862fcc09 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe538
[ 35.919433] head:00000000862fcc09 order:2 compound_mapcount:0 compound_pincount:0
[ 35.920342] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 35.921104] raw: 0100000000010200 ffffea0000359400 dead000000000002 ffff888007841c80
[ 35.922067] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
[ 35.923107] page dumped because: kasan: bad access detected
[ 35.923806]
[ 35.924003] Memory state around the buggy address:
[ 35.924631] ffff88800e53a000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.925496] ffff88800e53a080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.926395] >ffff88800e53a100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.927280] ^
[ 35.927971] ffff88800e53a180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.928867] ffff88800e53a200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 35.929779] ==================================================================
[ 35.962838] cgroup: Unknown subsys name 'hugetlb'
[ 35.964034] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:23:17 Registers:
info registers vcpu 0
RAX=0000000000000035 RBX=00000000000003f8 RCX=0000000000000000 RDX=00000000000003f8
RSI=ffffffff823640e1 RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff888008197648
R8 =0000000000000000 R9 =0000000000000035 R10=ffffffff82365d23 R11=000000000000000a
R12=0000000000000035 R13=0000000000000035 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=00007f1768fbb028 CR3=000000001798a000 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 40fbb58000000000
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=000055de2a16fd60 CR3=000000001798a000 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 40fbb58000000000
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