[ OK ] Finished Update UTMP about System Runlevel Changes. [ 35.627728] BUG: Bad rss-counter state mm:00000000eb0b3ce5 type:MM_FILEPAGES val:33 [ 35.627755] BUG: Bad rss-counter state mm:00000000eb0b3ce5 type:MM_ANONPAGES val:22 [ 35.808195] ================================================================== [ 35.808965] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 35.809740] Read of size 8 at addr ffff88801a33e310 by task sshd/219 [ 35.810375] [ 35.810554] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 35.811241] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 35.812039] Call Trace: [ 35.812294] [ 35.812630] dump_stack_lvl+0x91/0xf0 [ 35.813113] print_report+0xcc/0x620 [ 35.813507] ? __virt_addr_valid+0x102/0x340 [ 35.813950] ? vma_interval_tree_remove+0xc75/0xec0 [ 35.814454] ? vma_interval_tree_remove+0xc75/0xec0 [ 35.814978] kasan_report+0xbe/0xf0 [ 35.815368] ? vma_interval_tree_remove+0xc75/0xec0 [ 35.815870] vma_interval_tree_remove+0xc75/0xec0 [ 35.816360] vma_prepare+0xc54/0x11a0 [ 35.816749] __split_vma+0x5af/0x950 [ 35.817157] ? __pfx___split_vma+0x10/0x10 [ 35.817584] ? find_held_lock+0x2c/0x110 [ 35.817922] do_vmi_align_munmap+0x2ba/0x11f0 [ 35.818242] ? lock_is_held_type+0x9f/0x120 [ 35.818544] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 35.818888] ? mtree_range_walk+0x632/0x900 [ 35.819196] ? mas_walk+0x5c7/0x7c0 [ 35.819459] do_vmi_munmap+0x1f1/0x2b0 [ 35.819734] mmap_region+0x1f9/0x2660 [ 35.820005] ? vm_mmap_pgoff+0x15c/0x3a0 [ 35.820292] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 35.820696] ? __pfx_lock_acquire+0x10/0x10 [ 35.821004] ? __pfx_mmap_region+0x10/0x10 [ 35.821296] ? security_mmap_addr+0x7d/0xa0 [ 35.821593] ? get_unmapped_area+0x1f5/0x3f0 [ 35.821911] do_mmap+0x854/0xf00 [ 35.822159] vm_mmap_pgoff+0x1a6/0x3a0 [ 35.822438] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 35.822755] ksys_mmap_pgoff+0x3af/0x500 [ 35.823045] do_syscall_64+0x3f/0x90 [ 35.823312] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 35.823682] RIP: 0033:0x7f96b8c05d82 [ 35.823938] Code: eb aa 66 0f 1f 44 00 00 41 f7 c1 ff 0f 00 00 75 27 55 48 89 fd 53 89 cb 48 85 ff 74 33 41 89 da 48 89 ef b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 56 5b 5d c3 0f 1f 00 c7 05 ae 03 01 00 16 00 [ 35.825138] RSP: 002b:00007ffc0d661508 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 35.825651] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f96b8c05d82 [ 35.826133] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f96b803f000 [ 35.826613] RBP: 00007f96b803f000 R08: 0000000000000009 R09: 0000000000001000 [ 35.827088] R10: 0000000000000812 R11: 0000000000000206 R12: 000055876c742ec0 [ 35.827571] R13: 00007ffc0d661520 R14: 00007ffc0d661550 R15: 00007ffc0d6618b0 [ 35.828053] [ 35.828216] [ 35.828340] Allocated by task 206: [ 35.828578] kasan_save_stack+0x22/0x50 [ 35.828863] kasan_set_track+0x25/0x30 [ 35.829151] __kasan_slab_alloc+0x59/0x70 [ 35.829449] kmem_cache_alloc+0x16b/0x370 [ 35.829741] vm_area_dup+0x20/0x160 [ 35.830000] __split_vma+0x170/0x950 [ 35.830265] split_vma+0xc6/0x110 [ 35.830509] mprotect_fixup+0x8d2/0xb30 [ 35.830791] do_mprotect_pkey+0x87e/0xd40 [ 35.831089] __x64_sys_mprotect+0x78/0xc0 [ 35.831386] do_syscall_64+0x3f/0x90 [ 35.831650] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 35.832013] [ 35.832133] Freed by task 102: [ 35.832356] kasan_save_stack+0x22/0x50 [ 35.832640] kasan_set_track+0x25/0x30 [ 35.832924] kasan_save_free_info+0x2b/0x50 [ 35.833223] __kasan_slab_free+0x10a/0x190 [ 35.833520] kmem_cache_free+0x10d/0x4d0 [ 35.833806] rcu_core+0x8c8/0x2860 [ 35.834055] __do_softirq+0x1b7/0x7d4 [ 35.834328] [ 35.834449] Last potentially related work creation: [ 35.834785] kasan_save_stack+0x22/0x50 [ 35.835067] __kasan_record_aux_stack+0x8e/0xa0 [ 35.835399] __call_rcu_common.constprop.0+0x6a/0xb90 [ 35.835757] remove_vma+0x139/0x170 [ 35.836010] do_vmi_align_munmap+0xd4a/0x11f0 [ 35.836327] do_vmi_munmap+0x1f1/0x2b0 [ 35.836596] __vm_munmap+0x138/0x3a0 [ 35.836860] __x64_sys_munmap+0x59/0x80 [ 35.837151] do_syscall_64+0x3f/0x90 [ 35.837416] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 35.837775] [ 35.837897] The buggy address belongs to the object at ffff88801a33e2b8 [ 35.837897] which belongs to the cache vm_area_struct of size 168 [ 35.838724] The buggy address is located 88 bytes inside of [ 35.838724] freed 168-byte region [ffff88801a33e2b8, ffff88801a33e360) [ 35.839518] [ 35.839643] The buggy address belongs to the physical page: [ 35.840016] page:0000000038bde3c0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1a33e [ 35.840639] memcg:ffff88801a319701 [ 35.840886] flags: 0x100000000000200(slab|node=0|zone=1) [ 35.841251] page_type: 0xffffffff() [ 35.841505] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 35.842025] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801a319701 [ 35.842548] page dumped because: kasan: bad access detected [ 35.842924] [ 35.843044] Memory state around the buggy address: [ 35.843376] ffff88801a33e200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 35.843856] ffff88801a33e280: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb [ 35.844347] >ffff88801a33e300: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 35.844837] ^ [ 35.845109] ffff88801a33e380: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb [ 35.845591] ffff88801a33e400: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 35.846075] ================================================================== [ 35.846734] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 38.184626] BUG: Bad rss-counter state mm:00000000e34faab6 type:MM_FILEPAGES val:33 [ 38.185802] BUG: Bad rss-counter state mm:00000000e34faab6 type:MM_ANONPAGES val:22 [ 38.568138] BUG: Bad rss-counter state mm:0000000097acf828 type:MM_FILEPAGES val:33 [ 38.569164] BUG: Bad rss-counter state mm:0000000097acf828 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:63149' (ECDSA) to the list of known hosts. 2023/06/19 20:54:57 fuzzer started 2023/06/19 20:54:58 dialing manager at localhost:44161 2023/06/19 20:54:58 checking machine... 2023/06/19 20:54:58 checking revisions... [ 39.365264] kmemleak: Automatic memory scanning thread ended 2023/06/19 20:54:58 testing simple program... [ 39.415260] cgroup: Unknown subsys name 'net' [ 39.457352] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 20:54:45 Registers: info registers vcpu 0 RAX=0000000080000000 RBX=0000000000000000 RCX=0000000000000000 RDX=ffff88800fc951c0 RSI=ffffffff821989dc RDI=ffff88800e68d900 RBP=0000000000000010 RSP=ffff888015b2fe60 R8 =0000000000000005 R9 =0000000000000010 R10=0000000000000010 R11=00000000000b6996 R12=ffff88800e68d800 R13=dffffc0000000000 R14=ffffed1001cd1b1d R15=0000000000000000 RIP=ffffffff814c0800 RFL=00000246 [---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 00007fa3519e5900 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=00007fa35199901c CR3=0000000018f86000 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 XMM00=ffffffff00ffffffffffffffffffffff XMM01=707465675f6c697475646f6d6d61705f XMM02=ff000000000000ff0000000000ff0000 XMM03=66207463656e6e6f6373696420646576 XMM04=00000000000000000000000000000000 XMM05=00000000000000000000000000000000 XMM06=0d0c0f0e09080b0a0504070601000302 XMM07=00000000000000000000000000000000 XMM08=000a0d732a2e25006c61746166003367 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8450c50e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffff888008e27e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=0000000000000001 R12=ffffffff85d3bed0 R13=1ffff110011c4fd3 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8450d49f 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=000055bcfe4a7000 CR3=0000000016ea2000 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 XMM00=2037353a34353a3032203931206e754a XMM01=657463656e6e6f63736944203a5d3832 XMM02=302e303120746f6f722072657375206d XMM03=203a5d3832325b646873732072656c6c XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732037353a34353a3032203931 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000