[ 30.606958] sshd (213) used greatest stack depth: 23992 bytes left [ 30.607945] BUG: Bad rss-counter state mm:0000000025486198 type:MM_FILEPAGES val:33 [ 30.609437] BUG: Bad rss-counter state mm:0000000025486198 type:MM_ANONPAGES val:22 [ 30.768297] ================================================================== [ 30.769253] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.770199] Read of size 8 at addr ffff888019258140 by task sshd/220 [ 30.771165] [ 30.771398] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 30.772286] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.773298] Call Trace: [ 30.773617] [ 30.773901] dump_stack_lvl+0x91/0xf0 [ 30.774390] print_report+0xcc/0x620 [ 30.774871] ? __virt_addr_valid+0x102/0x340 [ 30.775429] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.776065] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.776704] kasan_report+0xbe/0xf0 [ 30.777192] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.777845] vma_interval_tree_remove+0xc75/0xec0 [ 30.778492] vma_prepare+0xc54/0x11a0 [ 30.778996] __split_vma+0x5af/0x950 [ 30.779490] ? __pfx___split_vma+0x10/0x10 [ 30.780074] ? find_held_lock+0x2c/0x110 [ 30.780640] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.781231] ? lock_is_held_type+0x9f/0x120 [ 30.781804] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.782450] ? mtree_range_walk+0x632/0x900 [ 30.783031] ? mas_walk+0x5c7/0x7c0 [ 30.783540] do_vmi_munmap+0x1f1/0x2b0 [ 30.784074] mmap_region+0x1f9/0x2660 [ 30.784586] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.785124] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.785884] ? __pfx_lock_acquire+0x10/0x10 [ 30.786447] ? __pfx_mmap_region+0x10/0x10 [ 30.787002] ? security_mmap_addr+0x7d/0xa0 [ 30.787567] ? get_unmapped_area+0x1f5/0x3f0 [ 30.788155] do_mmap+0x854/0xf00 [ 30.788623] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.789149] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.789743] ksys_mmap_pgoff+0x3af/0x500 [ 30.790281] do_syscall_64+0x3f/0x90 [ 30.790784] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.791465] RIP: 0033:0x7f85bd241d82 [ 30.791976] 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 [ 30.794237] RSP: 002b:00007fff2ea35df8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.795198] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f85bd241d82 [ 30.796114] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f85bc67b000 [ 30.797015] RBP: 00007f85bc67b000 R08: 0000000000000009 R09: 0000000000001000 [ 30.797919] R10: 0000000000000812 R11: 0000000000000206 R12: 000055c812942ec0 [ 30.798833] R13: 00007fff2ea35e10 R14: 00007fff2ea35e40 R15: 00007fff2ea361a0 [ 30.799751] [ 30.800064] [ 30.800291] Allocated by task 213: [ 30.800748] kasan_save_stack+0x22/0x50 [ 30.801275] kasan_set_track+0x25/0x30 [ 30.801797] __kasan_slab_alloc+0x59/0x70 [ 30.802357] kmem_cache_alloc+0x16b/0x370 [ 30.802905] vm_area_dup+0x20/0x160 [ 30.803388] __split_vma+0x170/0x950 [ 30.803896] split_vma+0xc6/0x110 [ 30.804359] mprotect_fixup+0x8d2/0xb30 [ 30.804887] do_mprotect_pkey+0x87e/0xd40 [ 30.805425] __x64_sys_mprotect+0x78/0xc0 [ 30.805979] do_syscall_64+0x3f/0x90 [ 30.806473] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.807150] [ 30.807379] Freed by task 213: [ 30.807791] kasan_save_stack+0x22/0x50 [ 30.808326] kasan_set_track+0x25/0x30 [ 30.808848] kasan_save_free_info+0x2b/0x50 [ 30.809410] __kasan_slab_free+0x10a/0x190 [ 30.809977] kmem_cache_free+0x10d/0x4d0 [ 30.810515] rcu_core+0x8c8/0x2860 [ 30.810988] __do_softirq+0x1b7/0x7d4 [ 30.811488] [ 30.811802] Last potentially related work creation: [ 30.812439] kasan_save_stack+0x22/0x50 [ 30.812972] __kasan_record_aux_stack+0x8e/0xa0 [ 30.813585] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.814267] remove_vma+0x139/0x170 [ 30.814745] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.815337] do_vmi_munmap+0x1f1/0x2b0 [ 30.815862] __vm_munmap+0x138/0x3a0 [ 30.816360] __x64_sys_munmap+0x59/0x80 [ 30.816878] do_syscall_64+0x3f/0x90 [ 30.817368] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.818042] [ 30.818267] The buggy address belongs to the object at ffff8880192580e8 [ 30.818267] which belongs to the cache vm_area_struct of size 168 [ 30.819844] The buggy address is located 88 bytes inside of [ 30.819844] freed 168-byte region [ffff8880192580e8, ffff888019258190) [ 30.821347] [ 30.821575] The buggy address belongs to the physical page: [ 30.822278] page:000000000c749961 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x19258 [ 30.823450] memcg:ffff88800ec1ba01 [ 30.823923] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 30.824657] page_type: 0xffffffff() [ 30.825126] raw: 0100000000000200 ffff88800879fc80 ffffea00003b19c0 dead000000000003 [ 30.826107] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800ec1ba01 [ 30.827069] page dumped because: kasan: bad access detected [ 30.827784] [ 30.828018] Memory state around the buggy address: [ 30.828636] ffff888019258000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.829555] ffff888019258080: 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb fb [ 30.830470] >ffff888019258100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.831374] ^ [ 30.832073] ffff888019258180: fb fb fc fc fc fc fc fc fc fc 00 00 00 00 00 00 [ 30.832988] ffff888019258200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 30.833902] ================================================================== [ 30.834951] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 32.982724] BUG: Bad rss-counter state mm:00000000ae2594d1 type:MM_FILEPAGES val:33 [ 32.983934] BUG: Bad rss-counter state mm:00000000ae2594d1 type:MM_ANONPAGES val:22 [ 33.391221] BUG: Bad rss-counter state mm:00000000325b153f type:MM_FILEPAGES val:33 [ 33.392307] BUG: Bad rss-counter state mm:00000000325b153f type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:7655' (ECDSA) to the list of known hosts. 2023/06/19 18:05:39 fuzzer started 2023/06/19 18:05:39 dialing manager at localhost:44161 2023/06/19 18:05:39 checking machine... 2023/06/19 18:05:39 checking revisions... [ 34.107326] kmemleak: Automatic memory scanning thread ended 2023/06/19 18:05:39 testing simple program... [ 34.150258] cgroup: Unknown subsys name 'net' [ 34.222906] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 18:05:32 Registers: info registers vcpu 0 RAX=ffffffff846000aa RBX=ffffffff813ad420 RCX=0000000000000001 RDX=1ffff11002bf0f30 RSI=ffff888015f87f48 RDI=ffffffff846000aa RBP=ffff888015f879c0 RSP=ffff888015f87928 R8 =0000000000000001 R9 =ffff888015f87968 R10=0000000000038001 R11=00000000000b4fb9 R12=ffff888015f879f0 R13=0000000000000000 R14=ffff88801a15d1c0 R15=0000000000000cc0 RIP=ffffffff810bd06d 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 00007fd73e3d3900 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=00007fd73e988650 CR3=0000000019dea000 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=00000000000000000000000000000000 XMM01=000000000000000000000000000000ff XMM02=000000000000000000000000000000ff XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=ffbc64ffffbc44ffffbc34ffffbc9f00 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=ffff88800d90f488 RCX=0000000000000001 RDX=1ffff11001b21e93 RSI=ffffffff8180ae86 RDI=ffff88800d90f498 RBP=ffff88800d90f458 RSP=ffff88800d90f3a0 R8 =0000000000000001 R9 =ffff88800d90f400 R10=0000000000038001 R11=0000000000021ee6 R12=ffff88800d90f488 R13=0000000000000000 R14=ffff888006abb680 R15=ffff88800cfd35f0 RIP=ffffffff813ad446 RFL=00000286 [--S--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 00007f73aa7de900 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=00007f73a9c12a50 CR3=000000000c642000 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=756f6a2f646d65747379732f6e75722f XMM01=00676f6c7379732f6c616e72756f6a2f XMM02=756f6a2f646d65747379732f6e75722f XMM03=006c616e72756f6a2f646d6574737973 XMM04=b4f8206f429f493500000000000ae988 XMM05=f25b06b37aa8b7270000000000134a00 XMM06=19e9129bd510f2350000000000133258 XMM07=fb795ef6d65770560000000000123868 XMM08=4f5453444600273d67736d000d0a0920 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000