[ 24.163633] BUG: Bad rss-counter state mm:00000000c121088c type:MM_FILEPAGES val:33 [ 24.164206] BUG: Bad rss-counter state mm:00000000c121088c type:MM_ANONPAGES val:22 [ OK ] Finished Update UTMP about System Runlevel Changes. [ 24.689892] ================================================================== [ 24.690806] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 24.691780] Read of size 8 at addr ffff88801abbb140 by task sshd/220 [ 24.692541] [ 24.692878] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 24.693777] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 24.694753] Call Trace: [ 24.695068] [ 24.695373] dump_stack_lvl+0x91/0xf0 [ 24.695857] print_report+0xcc/0x620 [ 24.696342] ? __virt_addr_valid+0x102/0x340 [ 24.696887] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.697510] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.698137] kasan_report+0xbe/0xf0 [ 24.698614] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.699231] vma_interval_tree_remove+0xc75/0xec0 [ 24.699868] vma_prepare+0xc54/0x11a0 [ 24.700354] __split_vma+0x5af/0x950 [ 24.700826] ? __pfx___split_vma+0x10/0x10 [ 24.701361] ? find_held_lock+0x2c/0x110 [ 24.701889] do_vmi_align_munmap+0x2ba/0x11f0 [ 24.702455] ? lock_is_held_type+0x9f/0x120 [ 24.702997] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 24.703623] ? mtree_range_walk+0x632/0x900 [ 24.704175] ? mas_walk+0x5c7/0x7c0 [ 24.704654] do_vmi_munmap+0x1f1/0x2b0 [ 24.705152] mmap_region+0x1f9/0x2660 [ 24.705645] ? vm_mmap_pgoff+0x15c/0x3a0 [ 24.706164] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 24.706895] ? __pfx_lock_acquire+0x10/0x10 [ 24.707438] ? __pfx_mmap_region+0x10/0x10 [ 24.707972] ? security_mmap_addr+0x7d/0xa0 [ 24.708506] ? get_unmapped_area+0x1f5/0x3f0 [ 24.709067] do_mmap+0x854/0xf00 [ 24.709512] vm_mmap_pgoff+0x1a6/0x3a0 [ 24.710006] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 24.710577] ksys_mmap_pgoff+0x3af/0x500 [ 24.711091] do_syscall_64+0x3f/0x90 [ 24.711583] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.712241] RIP: 0033:0x7fe1f4fd0d82 [ 24.712697] 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 [ 24.714848] RSP: 002b:00007ffde82be5f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 24.715769] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fe1f4fd0d82 [ 24.716632] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fe1f440a000 [ 24.717490] RBP: 00007fe1f440a000 R08: 0000000000000009 R09: 0000000000001000 [ 24.718343] R10: 0000000000000812 R11: 0000000000000206 R12: 0000555a16366ec0 [ 24.719203] R13: 00007ffde82be610 R14: 00007ffde82be640 R15: 00007ffde82be9a0 [ 24.720091] [ 24.720384] [ 24.720602] Allocated by task 206: [ 24.721034] kasan_save_stack+0x22/0x50 [ 24.721540] kasan_set_track+0x25/0x30 [ 24.722039] __kasan_slab_alloc+0x59/0x70 [ 24.722571] kmem_cache_alloc+0x16b/0x370 [ 24.723095] vm_area_dup+0x20/0x160 [ 24.723553] __split_vma+0x170/0x950 [ 24.724012] split_vma+0xc6/0x110 [ 24.724453] mprotect_fixup+0x8d2/0xb30 [ 24.724963] do_mprotect_pkey+0x87e/0xd40 [ 24.725487] __x64_sys_mprotect+0x78/0xc0 [ 24.726020] do_syscall_64+0x3f/0x90 [ 24.726490] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.727139] [ 24.727372] Freed by task 200: [ 24.727770] kasan_save_stack+0x22/0x50 [ 24.728288] kasan_set_track+0x25/0x30 [ 24.728780] kasan_save_free_info+0x2b/0x50 [ 24.729323] __kasan_slab_free+0x10a/0x190 [ 24.729860] kmem_cache_free+0x10d/0x4d0 [ 24.730387] rcu_core+0x8c8/0x2860 [ 24.730830] __do_softirq+0x1b7/0x7d4 [ 24.731310] [ 24.731535] Last potentially related work creation: [ 24.732139] kasan_save_stack+0x22/0x50 [ 24.732646] __kasan_record_aux_stack+0x8e/0xa0 [ 24.733227] __call_rcu_common.constprop.0+0x6a/0xb90 [ 24.733871] remove_vma+0x139/0x170 [ 24.734400] do_vmi_align_munmap+0xd4a/0x11f0 [ 24.734955] do_vmi_munmap+0x1f1/0x2b0 [ 24.735460] __vm_munmap+0x138/0x3a0 [ 24.735928] __x64_sys_munmap+0x59/0x80 [ 24.736435] do_syscall_64+0x3f/0x90 [ 24.736907] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.737554] [ 24.737769] The buggy address belongs to the object at ffff88801abbb0e8 [ 24.737769] which belongs to the cache vm_area_struct of size 168 [ 24.739252] The buggy address is located 88 bytes inside of [ 24.739252] freed 168-byte region [ffff88801abbb0e8, ffff88801abbb190) [ 24.740680] [ 24.740905] The buggy address belongs to the physical page: [ 24.741560] page:000000002dd09c93 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1abbb [ 24.742645] memcg:ffff88801ab20501 [ 24.743077] flags: 0x100000000000200(slab|node=0|zone=1) [ 24.743735] page_type: 0xffffffff() [ 24.744188] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 24.745101] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801ab20501 [ 24.745999] page dumped because: kasan: bad access detected [ 24.746658] [ 24.746876] Memory state around the buggy address: [ 24.747473] ffff88801abbb000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 24.748335] ffff88801abbb080: 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb fb [ 24.749199] >ffff88801abbb100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 24.750056] ^ [ 24.750695] ffff88801abbb180: fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb [ 24.751554] ffff88801abbb200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 24.752406] ================================================================== [ 24.753319] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 27.190045] BUG: Bad rss-counter state mm:00000000973fcefb type:MM_FILEPAGES val:33 [ 27.191227] BUG: Bad rss-counter state mm:00000000973fcefb type:MM_ANONPAGES val:22 [ 27.557163] BUG: Bad rss-counter state mm:000000001bf2032d type:MM_FILEPAGES val:33 [ 27.558342] BUG: Bad rss-counter state mm:000000001bf2032d type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:36090' (ECDSA) to the list of known hosts. 2023/06/20 01:31:25 fuzzer started 2023/06/20 01:31:25 dialing manager at localhost:44161 2023/06/20 01:31:25 checking machine... 2023/06/20 01:31:25 checking revisions... [ 28.276930] kmemleak: Automatic memory scanning thread ended 2023/06/20 01:31:25 testing simple program... [ 28.327894] cgroup: Unknown subsys name 'net' [ 28.388164] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 01:31:24 Registers: info registers vcpu 0 RAX=ffff88806ce35000 RBX=0000000000000000 RCX=ffffffff8450c50e RDX=ffffed100d9c6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffffffff85407e10 R8 =0000000000000000 R9 =ffffed100d9c6a00 R10=ffff88806ce35003 R11=ffff888008c58000 R12=ffffffff85d3bed0 R13=1ffffffff0a80fc7 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 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=00007fd839e38100 CR3=000000000da52000 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=2034323a31333a3130203032206e754a XMM01=657463656e6e6f63736944203a5d3832 XMM02=302e303120746f6f722072657375206d XMM03=203a5d3832325b646873732072656c6c XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732034323a31333a3130203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffffed10012e2004 RBX=0000000000000000 RCX=00000000000000fb RDX=0000000000000000 RSI=ffff888009710020 RDI=0000000000000000 RBP=ffffffff81ef13be RSP=ffff888016f37d50 R8 =0000000000000020 R9 =0000000000000004 R10=ffffed10012e2004 R11=00000000000b6996 R12=ffff888009710020 R13=ffff8880087b03c0 R14=ffffffff81ef13be R15=ffff888009686180 RIP=ffffffff8180f41b 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 00007f18fcd95900 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=00007fffce0d2000 CR3=000000000e610000 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=635f6e6f69737365733a4d41503d706f XMM01=6f6c5f6d61702c78756e696c65735f6d XMM02=61702c74696d7265705f6d61702c7469 XMM03=655f6d61702c7374696d696c5f6d6170 XMM04=3d6c616e696d72657420322e322e302e XMM05=3d656d616e74736f682022646873732f XMM06=746f6f72223d746363612078756e696c XMM07=6e655f6d61702c7374696d696c5f6d61 XMM08=652075253d64692073253d706f000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000