[ 24.514067] BUG: Bad rss-counter state mm:0000000023ceb216 type:MM_FILEPAGES val:33 [ 24.515515] BUG: Bad rss-counter state mm:0000000023ceb216 type:MM_ANONPAGES val:22 [ 24.676320] ================================================================== [ 24.677403] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 24.678527] Read of size 8 at addr ffff88800e009ed8 by task sshd/219 [ 24.679550] [ 24.679816] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 24.680834] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 24.681992] Call Trace: [ 24.682326] [ 24.682616] dump_stack_lvl+0x91/0xf0 [ 24.683106] print_report+0xcc/0x620 [ 24.683605] ? __virt_addr_valid+0x102/0x340 [ 24.684166] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.684795] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.685420] kasan_report+0xbe/0xf0 [ 24.685898] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.686529] vma_interval_tree_remove+0xc75/0xec0 [ 24.687132] vma_prepare+0xc54/0x11a0 [ 24.687607] __split_vma+0x5af/0x950 [ 24.688076] ? __pfx___split_vma+0x10/0x10 [ 24.688602] ? find_held_lock+0x2c/0x110 [ 24.689118] do_vmi_align_munmap+0x2ba/0x11f0 [ 24.689688] ? lock_is_held_type+0x9f/0x120 [ 24.690254] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 24.690858] ? mtree_range_walk+0x632/0x900 [ 24.691407] ? mas_walk+0x5c7/0x7c0 [ 24.691887] do_vmi_munmap+0x1f1/0x2b0 [ 24.692381] mmap_region+0x1f9/0x2660 [ 24.692868] ? vm_mmap_pgoff+0x15c/0x3a0 [ 24.693377] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 24.694086] ? __pfx_lock_acquire+0x10/0x10 [ 24.694627] ? __pfx_mmap_region+0x10/0x10 [ 24.695155] ? security_mmap_addr+0x7d/0xa0 [ 24.695685] ? get_unmapped_area+0x1f5/0x3f0 [ 24.696236] do_mmap+0x854/0xf00 [ 24.696679] vm_mmap_pgoff+0x1a6/0x3a0 [ 24.697182] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 24.697746] ksys_mmap_pgoff+0x3af/0x500 [ 24.698268] do_syscall_64+0x3f/0x90 [ 24.698751] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.699400] RIP: 0033:0x7f9980f7dd82 [ 24.699864] 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 [ 24.701999] RSP: 002b:00007ffeba5c5a18 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 24.702919] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f9980f7dd82 [ 24.703777] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f99803b7000 [ 24.704628] RBP: 00007f99803b7000 R08: 0000000000000009 R09: 0000000000001000 [ 24.705482] R10: 0000000000000812 R11: 0000000000000206 R12: 000055d628c0bec0 [ 24.706363] R13: 00007ffeba5c5a30 R14: 00007ffeba5c5a60 R15: 00007ffeba5c5dc0 [ 24.707196] [ 24.707486] [ 24.707702] Allocated by task 212: [ 24.708135] kasan_save_stack+0x22/0x50 [ 24.708646] kasan_set_track+0x25/0x30 [ 24.709143] __kasan_slab_alloc+0x59/0x70 [ 24.709669] kmem_cache_alloc+0x16b/0x370 [ 24.710197] vm_area_dup+0x20/0x160 [ 24.710648] __split_vma+0x170/0x950 [ 24.711114] split_vma+0xc6/0x110 [ 24.711547] mprotect_fixup+0x8d2/0xb30 [ 24.712040] do_mprotect_pkey+0x87e/0xd40 [ 24.712559] __x64_sys_mprotect+0x78/0xc0 [ 24.713076] do_syscall_64+0x3f/0x90 [ 24.713550] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.714207] [ 24.714445] Freed by task 212: [ 24.714828] kasan_save_stack+0x22/0x50 [ 24.715326] kasan_set_track+0x25/0x30 [ 24.715808] kasan_save_free_info+0x2b/0x50 [ 24.716333] __kasan_slab_free+0x10a/0x190 [ 24.716865] kmem_cache_free+0x10d/0x4d0 [ 24.717373] rcu_core+0x8c8/0x2860 [ 24.717836] __do_softirq+0x1b7/0x7d4 [ 24.718337] [ 24.718552] Last potentially related work creation: [ 24.719142] kasan_save_stack+0x22/0x50 [ 24.719647] __kasan_record_aux_stack+0x8e/0xa0 [ 24.720222] __call_rcu_common.constprop.0+0x6a/0xb90 [ 24.720897] remove_vma+0x139/0x170 [ 24.721351] do_vmi_align_munmap+0xd4a/0x11f0 [ 24.721925] do_vmi_munmap+0x1f1/0x2b0 [ 24.722417] __vm_munmap+0x138/0x3a0 [ 24.722902] __x64_sys_munmap+0x59/0x80 [ 24.723455] do_syscall_64+0x3f/0x90 [ 24.723930] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.724571] [ 24.724794] Second to last potentially related work creation: [ 24.725478] kasan_save_stack+0x22/0x50 [ 24.725990] __kasan_record_aux_stack+0x8e/0xa0 [ 24.726626] __call_rcu_common.constprop.0+0x6a/0xb90 [ 24.727268] remove_vma+0x139/0x170 [ 24.727714] do_vmi_align_munmap+0xd4a/0x11f0 [ 24.728282] do_vmi_munmap+0x1f1/0x2b0 [ 24.728774] mmap_region+0x1f9/0x2660 [ 24.729254] do_mmap+0x854/0xf00 [ 24.729688] vm_mmap_pgoff+0x1a6/0x3a0 [ 24.730191] ksys_mmap_pgoff+0x3af/0x500 [ 24.730706] do_syscall_64+0x3f/0x90 [ 24.731183] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.731830] [ 24.732052] The buggy address belongs to the object at ffff88800e009e80 [ 24.732052] which belongs to the cache vm_area_struct of size 168 [ 24.733528] The buggy address is located 88 bytes inside of [ 24.733528] freed 168-byte region [ffff88800e009e80, ffff88800e009f28) [ 24.734962] [ 24.735177] The buggy address belongs to the physical page: [ 24.735841] page:00000000d135c1dc refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe009 [ 24.736940] memcg:ffff88800e25b301 [ 24.737366] flags: 0x100000000000200(slab|node=0|zone=1) [ 24.738015] page_type: 0xffffffff() [ 24.738473] raw: 0100000000000200 ffff88800879fc80 ffffea00003a2140 dead000000000008 [ 24.739386] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e25b301 [ 24.740283] page dumped because: kasan: bad access detected [ 24.740946] [ 24.741162] Memory state around the buggy address: [ 24.741745] ffff88800e009d80: fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 24.742617] ffff88800e009e00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 24.743468] >ffff88800e009e80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 24.744324] ^ [ 24.745047] ffff88800e009f00: fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc [ 24.745902] ffff88800e009f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.746772] ================================================================== [ 24.747690] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 26.697413] BUG: Bad rss-counter state mm:00000000b9f8703e type:MM_FILEPAGES val:33 [ 26.698008] BUG: Bad rss-counter state mm:00000000b9f8703e type:MM_ANONPAGES val:22 [ 27.145372] BUG: Bad rss-counter state mm:000000002ca5548e type:MM_FILEPAGES val:33 [ 27.146384] BUG: Bad rss-counter state mm:000000002ca5548e type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:16382' (ECDSA) to the list of known hosts. 2023/06/19 22:36:07 fuzzer started 2023/06/19 22:36:07 dialing manager at localhost:44161 2023/06/19 22:36:07 checking machine... 2023/06/19 22:36:07 checking revisions... [ 27.855003] kmemleak: Automatic memory scanning thread ended 2023/06/19 22:36:07 testing simple program... [ 27.901304] cgroup: Unknown subsys name 'net' [ 27.953446] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 22:36:06 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=ffff88806ce09b38 RCX=0000000000000001 RDX=1ffff1100d9c1377 RSI=ffffffff81370a3a RDI=ffff88806ce09b44 RBP=ffff88806ce09bb8 RSP=ffff88806ce09a50 R8 =0000000000000001 R9 =ffff88806ce09ab0 R10=0000000000038001 R11=0000000000020ed0 R12=ffff88806ce09b38 R13=0000000000000000 R14=ffff88800e879b40 R15=ffff88800e70c100 RIP=ffffffff813ad4f7 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 00007f9c290ab900 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=00007f9c29662618 CR3=0000000014678000 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=6e69676f6c5f6d61702c78756e696c65 XMM02=755f6d61702c74696d7265705f6d6170 XMM03=2c766e655f6d61702c7374696d696c5f XMM04=6d61702c766e655f6d61702c7374696d XMM05=78696e755f6d61702c74696d7265705f XMM06=6469756e69676f6c5f6d61702c78756e XMM07=672065736f6c635f6e6f69737365733a XMM08=61662029286e65706f5f746964756100 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=ffff888008c58400 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=00007efe49272f98 CR3=000000000d680000 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=00000000000000000000000000000000 XMM01=928891ba1fc45cb8bd4da3571a4b0d19 XMM02=2c67c8bc2e329bc3000000000011ce28 XMM03=fb795ef6d65770560000000000123cb0 XMM04=98475a8cfa01eec300000000000ae988 XMM05=dfcdbad4f1609c370000000000134838 XMM06=af41ca8d9bcf4ac20000000000133a10 XMM07=e042d86d42eb936e0000000000123f88 XMM08=0e91a7d3219dd027000000000011ce88 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000