[ 31.291929] BUG: Bad rss-counter state mm:00000000131db549 type:MM_FILEPAGES val:33 [ 31.293390] BUG: Bad rss-counter state mm:00000000131db549 type:MM_ANONPAGES val:22 [ 31.474749] ================================================================== [ 31.475654] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 31.476595] Read of size 8 at addr ffff88800dce7df0 by task sshd/220 [ 31.477408] [ 31.477631] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 31.478632] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 31.479615] Call Trace: [ 31.479940] [ 31.480245] dump_stack_lvl+0x91/0xf0 [ 31.480747] print_report+0xcc/0x620 [ 31.481285] ? __virt_addr_valid+0x102/0x340 [ 31.481840] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.482482] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.483118] kasan_report+0xbe/0xf0 [ 31.483720] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.484384] vma_interval_tree_remove+0xc75/0xec0 [ 31.485033] vma_prepare+0xc54/0x11a0 [ 31.485542] __split_vma+0x5af/0x950 [ 31.486038] ? __pfx___split_vma+0x10/0x10 [ 31.486620] ? find_held_lock+0x2c/0x110 [ 31.487261] do_vmi_align_munmap+0x2ba/0x11f0 [ 31.487876] ? lock_is_held_type+0x9f/0x120 [ 31.488468] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 31.489126] ? mtree_range_walk+0x632/0x900 [ 31.489704] ? mas_walk+0x5c7/0x7c0 [ 31.490224] do_vmi_munmap+0x1f1/0x2b0 [ 31.490738] mmap_region+0x1f9/0x2660 [ 31.491257] ? vm_mmap_pgoff+0x15c/0x3a0 [ 31.491785] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 31.492534] ? __pfx_lock_acquire+0x10/0x10 [ 31.493120] ? __pfx_mmap_region+0x10/0x10 [ 31.493672] ? security_mmap_addr+0x7d/0xa0 [ 31.494250] ? get_unmapped_area+0x1f5/0x3f0 [ 31.494824] do_mmap+0x854/0xf00 [ 31.495295] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.495809] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 31.496402] ksys_mmap_pgoff+0x3af/0x500 [ 31.496943] do_syscall_64+0x3f/0x90 [ 31.497450] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.498150] RIP: 0033:0x7eff77497d82 [ 31.498630] 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 [ 31.500881] RSP: 002b:00007ffe8ef23928 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 31.501831] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007eff77497d82 [ 31.502725] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007eff768d1000 [ 31.503605] RBP: 00007eff768d1000 R08: 0000000000000009 R09: 0000000000001000 [ 31.504491] R10: 0000000000000812 R11: 0000000000000206 R12: 0000558d28ce9b20 [ 31.505402] R13: 00007ffe8ef23940 R14: 00007ffe8ef23970 R15: 00007ffe8ef23cd0 [ 31.506315] [ 31.506617] [ 31.506838] Allocated by task 213: [ 31.507304] kasan_save_stack+0x22/0x50 [ 31.507828] kasan_set_track+0x25/0x30 [ 31.508350] __kasan_slab_alloc+0x59/0x70 [ 31.508898] kmem_cache_alloc+0x16b/0x370 [ 31.509451] vm_area_dup+0x20/0x160 [ 31.509924] __split_vma+0x170/0x950 [ 31.510432] split_vma+0xc6/0x110 [ 31.510887] mprotect_fixup+0x8d2/0xb30 [ 31.511416] do_mprotect_pkey+0x87e/0xd40 [ 31.511952] __x64_sys_mprotect+0x78/0xc0 [ 31.512496] do_syscall_64+0x3f/0x90 [ 31.513001] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.513675] [ 31.513893] Freed by task 213: [ 31.514328] kasan_save_stack+0x22/0x50 [ 31.514851] kasan_set_track+0x25/0x30 [ 31.515377] kasan_save_free_info+0x2b/0x50 [ 31.515929] __kasan_slab_free+0x10a/0x190 [ 31.516491] kmem_cache_free+0x10d/0x4d0 [ 31.517041] rcu_core+0x8c8/0x2860 [ 31.517522] __do_softirq+0x1b7/0x7d4 [ 31.518021] [ 31.518271] Last potentially related work creation: [ 31.518876] kasan_save_stack+0x22/0x50 [ 31.519412] __kasan_record_aux_stack+0x8e/0xa0 [ 31.520006] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.520710] remove_vma+0x139/0x170 [ 31.521229] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.521810] do_vmi_munmap+0x1f1/0x2b0 [ 31.522342] __vm_munmap+0x138/0x3a0 [ 31.522823] __x64_sys_munmap+0x59/0x80 [ 31.523354] do_syscall_64+0x3f/0x90 [ 31.523844] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.524516] [ 31.524739] Second to last potentially related work creation: [ 31.525475] kasan_save_stack+0x22/0x50 [ 31.526002] __kasan_record_aux_stack+0x8e/0xa0 [ 31.526626] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.527308] remove_vma+0x139/0x170 [ 31.527774] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.528356] do_vmi_munmap+0x1f1/0x2b0 [ 31.528877] __vm_munmap+0x138/0x3a0 [ 31.529379] elf_map+0x26f/0x310 [ 31.529842] load_elf_binary+0xd82/0x5030 [ 31.530410] bprm_execve+0x803/0x1940 [ 31.530895] do_execveat_common+0x734/0x8e0 [ 31.531453] __x64_sys_execve+0x93/0xc0 [ 31.531960] do_syscall_64+0x3f/0x90 [ 31.532468] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.533168] [ 31.533388] The buggy address belongs to the object at ffff88800dce7d98 [ 31.533388] which belongs to the cache vm_area_struct of size 168 [ 31.534927] The buggy address is located 88 bytes inside of [ 31.534927] freed 168-byte region [ffff88800dce7d98, ffff88800dce7e40) [ 31.536406] [ 31.536632] The buggy address belongs to the physical page: [ 31.537357] page:000000006b306989 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xdce7 [ 31.538505] memcg:ffff88800d95a301 [ 31.538945] flags: 0x100000000000200(slab|node=0|zone=1) [ 31.539620] page_type: 0xffffffff() [ 31.540103] raw: 0100000000000200 ffff8880087a0c80 ffffea0000313100 dead000000000002 [ 31.541084] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800d95a301 [ 31.542036] page dumped because: kasan: bad access detected [ 31.542740] [ 31.542963] Memory state around the buggy address: [ 31.543579] ffff88800dce7c80: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb [ 31.544489] ffff88800dce7d00: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc [ 31.545408] >ffff88800dce7d80: fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb [ 31.546328] ^ [ 31.547180] ffff88800dce7e00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 31.548064] ffff88800dce7e80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.548974] ================================================================== [ 31.550008] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 33.307603] BUG: Bad rss-counter state mm:00000000b4e90475 type:MM_FILEPAGES val:33 [ 33.308306] BUG: Bad rss-counter state mm:00000000b4e90475 type:MM_ANONPAGES val:22 [ 33.760149] BUG: Bad rss-counter state mm:000000002e9a2cb7 type:MM_FILEPAGES val:33 [ 33.761162] BUG: Bad rss-counter state mm:000000002e9a2cb7 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:12093' (ECDSA) to the list of known hosts. 2023/06/21 00:38:54 fuzzer started 2023/06/21 00:38:54 dialing manager at localhost:36067 2023/06/21 00:38:54 checking machine... 2023/06/21 00:38:54 checking revisions... [ 34.493905] kmemleak: Automatic memory scanning thread ended 2023/06/21 00:38:54 testing simple program... [ 34.551449] cgroup: Unknown subsys name 'net' [ 34.604180] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 00:38:54 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=00007ffe9159e428 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=00007f252f343510000055b30b7d9790 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=0000000000000000 RBX=1ffff110033b2edd RCX=0000000000000000 RDX=ffff88800ff9b680 RSI=ffffffff81c5f148 RDI=0000000000000005 RBP=ffff88800ff8c000 RSP=ffff888019d976b0 R8 =0000000000000005 R9 =0000000000000000 R10=0000000000000000 R11=00000000000b6a61 R12=0000000000000000 R13=ffff888016152000 R14=0000000000000000 R15=0000000000001000 RIP=ffffffff814c089b 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 00007faad27e3700 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=00007f42d5573960 CR3=000000000f966000 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=2034353a38333a3030203132206e754a XMM01=73732878696e755f6d6170203a5d3932 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3932325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732033353a38333a3030203132 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000