[ 31.753309] BUG: Bad rss-counter state mm:000000002c4b563e type:MM_FILEPAGES val:33 [ 31.754098] BUG: Bad rss-counter state mm:000000002c4b563e type:MM_ANONPAGES val:22 [ 31.923871] ================================================================== [ 31.924795] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 31.925751] Read of size 8 at addr ffff88800c7e5df0 by task sshd/219 [ 31.926646] [ 31.926865] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 31.927739] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 31.928747] Call Trace: [ 31.929069] [ 31.929353] dump_stack_lvl+0x91/0xf0 [ 31.929860] print_report+0xcc/0x620 [ 31.930393] ? __virt_addr_valid+0x102/0x340 [ 31.930954] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.931581] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.932210] kasan_report+0xbe/0xf0 [ 31.932686] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.933310] vma_interval_tree_remove+0xc75/0xec0 [ 31.933916] vma_prepare+0xc54/0x11a0 [ 31.934416] __split_vma+0x5af/0x950 [ 31.934906] ? __pfx___split_vma+0x10/0x10 [ 31.935448] ? find_held_lock+0x2c/0x110 [ 31.935986] do_vmi_align_munmap+0x2ba/0x11f0 [ 31.936551] ? lock_is_held_type+0x9f/0x120 [ 31.937097] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 31.937710] ? mtree_range_walk+0x632/0x900 [ 31.938297] ? mas_walk+0x5c7/0x7c0 [ 31.938796] do_vmi_munmap+0x1f1/0x2b0 [ 31.939297] mmap_region+0x1f9/0x2660 [ 31.939789] ? vm_mmap_pgoff+0x15c/0x3a0 [ 31.940303] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 31.941032] ? __pfx_lock_acquire+0x10/0x10 [ 31.941564] ? __pfx_mmap_region+0x10/0x10 [ 31.942122] ? security_mmap_addr+0x7d/0xa0 [ 31.942655] ? get_unmapped_area+0x1f5/0x3f0 [ 31.943213] do_mmap+0x854/0xf00 [ 31.943657] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.944161] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 31.944725] ksys_mmap_pgoff+0x3af/0x500 [ 31.945240] do_syscall_64+0x3f/0x90 [ 31.945724] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.946393] RIP: 0033:0x7f7a73b9cd82 [ 31.946859] 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 [ 31.949005] RSP: 002b:00007ffff9eb8418 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 31.949913] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f7a73b9cd82 [ 31.950781] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f7a72fd6000 [ 31.951632] RBP: 00007f7a72fd6000 R08: 0000000000000009 R09: 0000000000001000 [ 31.952476] R10: 0000000000000812 R11: 0000000000000206 R12: 0000560d1bda6d90 [ 31.953344] R13: 00007ffff9eb8430 R14: 00007ffff9eb8460 R15: 00007ffff9eb87c0 [ 31.954230] [ 31.954534] [ 31.954761] Allocated by task 212: [ 31.955187] kasan_save_stack+0x22/0x50 [ 31.955701] kasan_set_track+0x25/0x30 [ 31.956201] __kasan_slab_alloc+0x59/0x70 [ 31.956726] kmem_cache_alloc+0x16b/0x370 [ 31.957254] vm_area_dup+0x20/0x160 [ 31.957718] __split_vma+0x170/0x950 [ 31.958203] split_vma+0xc6/0x110 [ 31.958645] mprotect_fixup+0x8d2/0xb30 [ 31.959150] do_mprotect_pkey+0x87e/0xd40 [ 31.959679] __x64_sys_mprotect+0x78/0xc0 [ 31.960210] do_syscall_64+0x3f/0x90 [ 31.960697] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.961358] [ 31.961572] Freed by task 212: [ 31.961978] kasan_save_stack+0x22/0x50 [ 31.962504] kasan_set_track+0x25/0x30 [ 31.963006] kasan_save_free_info+0x2b/0x50 [ 31.963539] __kasan_slab_free+0x10a/0x190 [ 31.964088] kmem_cache_free+0x10d/0x4d0 [ 31.964603] rcu_core+0x8c8/0x2860 [ 31.965060] __do_softirq+0x1b7/0x7d4 [ 31.965539] [ 31.965758] Last potentially related work creation: [ 31.966353] kasan_save_stack+0x22/0x50 [ 31.966861] __kasan_record_aux_stack+0x8e/0xa0 [ 31.967434] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.968077] remove_vma+0x139/0x170 [ 31.968529] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.969091] do_vmi_munmap+0x1f1/0x2b0 [ 31.969577] __vm_munmap+0x138/0x3a0 [ 31.970073] __x64_sys_munmap+0x59/0x80 [ 31.970581] do_syscall_64+0x3f/0x90 [ 31.971058] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.971708] [ 31.971928] Second to last potentially related work creation: [ 31.972613] kasan_save_stack+0x22/0x50 [ 31.973130] __kasan_record_aux_stack+0x8e/0xa0 [ 31.973703] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.974370] remove_vma+0x139/0x170 [ 31.974829] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.975386] do_vmi_munmap+0x1f1/0x2b0 [ 31.975876] __vm_munmap+0x138/0x3a0 [ 31.976348] elf_map+0x26f/0x310 [ 31.976803] load_elf_binary+0x3417/0x5030 [ 31.977341] bprm_execve+0x803/0x1940 [ 31.977811] do_execveat_common+0x734/0x8e0 [ 31.978360] __x64_sys_execve+0x93/0xc0 [ 31.978854] do_syscall_64+0x3f/0x90 [ 31.979330] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.979983] [ 31.980196] The buggy address belongs to the object at ffff88800c7e5d98 [ 31.980196] which belongs to the cache vm_area_struct of size 168 [ 31.981679] The buggy address is located 88 bytes inside of [ 31.981679] freed 168-byte region [ffff88800c7e5d98, ffff88800c7e5e40) [ 31.983107] [ 31.983324] The buggy address belongs to the physical page: [ 31.983976] page:000000004b5fa6ea refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xc7e5 [ 31.985098] memcg:ffff88800ead1b01 [ 31.985526] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 31.986245] page_type: 0xffffffff() [ 31.986701] raw: 0100000000000200 ffff8880087a0c80 0000000000000000 dead000000000001 [ 31.987620] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800ead1b01 [ 31.988523] page dumped because: kasan: bad access detected [ 31.989194] [ 31.989413] Memory state around the buggy address: [ 31.989992] ffff88800c7e5c80: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb [ 31.990853] ffff88800c7e5d00: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc [ 31.991714] >ffff88800c7e5d80: fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb [ 31.992560] ^ [ 31.993372] ffff88800c7e5e00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 31.994244] ffff88800c7e5e80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.995089] ================================================================== [ 31.996299] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 34.136702] BUG: Bad rss-counter state mm:00000000a30d421c type:MM_FILEPAGES val:33 [ 34.137713] BUG: Bad rss-counter state mm:00000000a30d421c type:MM_ANONPAGES val:22 [ 34.610445] BUG: Bad rss-counter state mm:00000000d13a1e18 type:MM_FILEPAGES val:33 [ 34.611470] BUG: Bad rss-counter state mm:00000000d13a1e18 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:43511' (ECDSA) to the list of known hosts. 2023/06/20 19:12:22 fuzzer started 2023/06/20 19:12:22 dialing manager at localhost:36067 2023/06/20 19:12:22 checking machine... 2023/06/20 19:12:22 checking revisions... [ 35.395071] kmemleak: Automatic memory scanning thread ended 2023/06/20 19:12:23 testing simple program... [ 35.447048] cgroup: Unknown subsys name 'net' [ 35.510762] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 19:12:22 Registers: info registers vcpu 0 RAX=ffff88806ce35000 RBX=0000000000000000 RCX=ffffffff8451250e RDX=ffffed100d9c6a01 RSI=0000000000000004 RDI=ffffffff81288ac5 RBP=dffffc0000000000 RSP=ffffffff85407e10 R8 =0000000000000000 R9 =ffffed100d9c6a00 R10=ffff88806ce35003 R11=0000000000000001 R12=ffffffff85d3d350 R13=1ffffffff0a80fc7 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8451349f 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 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=000055dd3ee5a000 CR3=0000000005482000 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=00007fa423ac6510000055dd3ee56790 XMM02=6f6974707972636e6561737268746977 XMM03=00000000000000000000000000777074 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=ffffffffffff00ffffff00ffffff00ff XMM08=00002000000000202020002020200000 XMM09=ffffffffffff00ffffff00ffffff00ff XMM10=00002000000000202020002020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=1ffff11001bf131d RBX=ffff88800df898b8 RCX=1ffff11002e783b6 RDX=dffffc0000000000 RSI=ffff88801ba00278 RDI=ffff88800df898e8 RBP=ffff8880173c1d80 RSP=ffff888015d0f968 R8 =0000000000000001 R9 =0000000000000246 R10=0000000000000003 R11=00000000000b6d53 R12=ffff88801ba001d0 R13=0000000000000000 R14=ffff8880173e2e88 R15=ffff8880173e2e40 RIP=ffffffff8184767e 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 =0000 0000000000000000 00000000 00000000 DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f3cd7d91900 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=00007f3cd72b0040 CR3=000000000ba22000 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=d3fdd5f48436fbd700000000000aead0 XMM01=8cdec34d38af4c0a00000000000f8168 XMM02=693bd129e125714a00000000000f84a8 XMM03=2fccd54c36d8a3f300000000000f9ea8 XMM04=bc5d4e71d5c30d6100000000000ae988 XMM05=5b0ad8b926df70840000000000132ef0 XMM06=806171799158d9670000000000132660 XMM07=e042d86d42eb936e00000000001217b8 XMM08=e472ad86ed25c95b000000000011abd8 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000