[ 23.535314] BUG: Bad rss-counter state mm:00000000b9d5edd4 type:MM_FILEPAGES val:33 [ 23.535967] BUG: Bad rss-counter state mm:00000000b9d5edd4 type:MM_ANONPAGES val:22 [ OK ] Finished Update UTMP about System Runlevel Changes. [ 23.769344] ================================================================== [ 23.770128] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 23.770865] Read of size 8 at addr ffff888019b7ea50 by task sshd/221 [ 23.771465] [ 23.771631] CPU: 0 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 23.772409] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 23.773198] Call Trace: [ 23.773445] [ 23.773676] dump_stack_lvl+0x91/0xf0 [ 23.774062] print_report+0xcc/0x620 [ 23.774465] ? __virt_addr_valid+0x102/0x340 [ 23.774905] ? vma_interval_tree_remove+0xc75/0xec0 [ 23.775391] ? vma_interval_tree_remove+0xc75/0xec0 [ 23.775874] kasan_report+0xbe/0xf0 [ 23.776249] ? vma_interval_tree_remove+0xc75/0xec0 [ 23.776741] vma_interval_tree_remove+0xc75/0xec0 [ 23.777217] vma_prepare+0xc54/0x11a0 [ 23.777589] __split_vma+0x5af/0x950 [ 23.777958] ? __pfx___split_vma+0x10/0x10 [ 23.778370] ? find_held_lock+0x2c/0x110 [ 23.778772] do_vmi_align_munmap+0x2ba/0x11f0 [ 23.779210] ? lock_is_held_type+0x9f/0x120 [ 23.779619] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 23.780090] ? mtree_range_walk+0x632/0x900 [ 23.780515] ? mas_walk+0x5c7/0x7c0 [ 23.780903] do_vmi_munmap+0x1f1/0x2b0 [ 23.781279] mmap_region+0x1f9/0x2660 [ 23.781605] ? vm_mmap_pgoff+0x15c/0x3a0 [ 23.781886] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 23.782273] ? __pfx_lock_acquire+0x10/0x10 [ 23.782564] ? __pfx_mmap_region+0x10/0x10 [ 23.782855] ? security_mmap_addr+0x7d/0xa0 [ 23.783143] ? get_unmapped_area+0x1f5/0x3f0 [ 23.783439] do_mmap+0x854/0xf00 [ 23.783688] vm_mmap_pgoff+0x1a6/0x3a0 [ 23.783957] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 23.784260] ksys_mmap_pgoff+0x3af/0x500 [ 23.784541] do_syscall_64+0x3f/0x90 [ 23.784812] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.785166] RIP: 0033:0x7fdd29beed82 [ 23.785419] 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 [ 23.786565] RSP: 002b:00007ffc80836548 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 23.787057] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fdd29beed82 [ 23.787517] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fdd29028000 [ 23.787980] RBP: 00007fdd29028000 R08: 0000000000000009 R09: 0000000000001000 [ 23.788438] R10: 0000000000000812 R11: 0000000000000206 R12: 0000561f5b48fec0 [ 23.788899] R13: 00007ffc80836560 R14: 00007ffc80836590 R15: 00007ffc808368f0 [ 23.789369] [ 23.789532] [ 23.789650] Allocated by task 206: [ 23.789886] kasan_save_stack+0x22/0x50 [ 23.790160] kasan_set_track+0x25/0x30 [ 23.790429] __kasan_slab_alloc+0x59/0x70 [ 23.790716] kmem_cache_alloc+0x16b/0x370 [ 23.791004] vm_area_dup+0x20/0x160 [ 23.791254] __split_vma+0x170/0x950 [ 23.791513] split_vma+0xc6/0x110 [ 23.791749] mprotect_fixup+0x8d2/0xb30 [ 23.792022] do_mprotect_pkey+0x87e/0xd40 [ 23.792306] __x64_sys_mprotect+0x78/0xc0 [ 23.792589] do_syscall_64+0x3f/0x90 [ 23.792864] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.793212] [ 23.793331] Freed by task 19: [ 23.793540] kasan_save_stack+0x22/0x50 [ 23.793814] kasan_set_track+0x25/0x30 [ 23.794083] kasan_save_free_info+0x2b/0x50 [ 23.794372] __kasan_slab_free+0x10a/0x190 [ 23.794663] kmem_cache_free+0x10d/0x4d0 [ 23.794945] rcu_core+0x8c8/0x2860 [ 23.795189] __do_softirq+0x1b7/0x7d4 [ 23.795451] [ 23.795570] Last potentially related work creation: [ 23.795894] kasan_save_stack+0x22/0x50 [ 23.796168] __kasan_record_aux_stack+0x8e/0xa0 [ 23.796479] __call_rcu_common.constprop.0+0x6a/0xb90 [ 23.796839] remove_vma+0x139/0x170 [ 23.797086] do_vmi_align_munmap+0xd4a/0x11f0 [ 23.797393] do_vmi_munmap+0x1f1/0x2b0 [ 23.797658] __vm_munmap+0x138/0x3a0 [ 23.797913] __x64_sys_munmap+0x59/0x80 [ 23.798182] do_syscall_64+0x3f/0x90 [ 23.798442] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.798796] [ 23.798915] The buggy address belongs to the object at ffff888019b7e9f8 [ 23.798915] which belongs to the cache vm_area_struct of size 168 [ 23.799714] The buggy address is located 88 bytes inside of [ 23.799714] freed 168-byte region [ffff888019b7e9f8, ffff888019b7eaa0) [ 23.800481] [ 23.800598] The buggy address belongs to the physical page: [ 23.800973] page:00000000cb0d97f1 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x19b7e [ 23.801567] memcg:ffff888019b7f001 [ 23.801797] flags: 0x100000000000200(slab|node=0|zone=1) [ 23.802151] page_type: 0xffffffff() [ 23.802398] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 23.802898] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888019b7f001 [ 23.803391] page dumped because: kasan: bad access detected [ 23.803752] [ 23.803870] Memory state around the buggy address: [ 23.804185] ffff888019b7e900: fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 23.804664] ffff888019b7e980: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa [ 23.805129] >ffff888019b7ea00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.805594] ^ [ 23.805977] ffff888019b7ea80: fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb [ 23.806446] ffff888019b7eb00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.806909] ================================================================== [ 23.807428] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 25.700870] BUG: Bad rss-counter state mm:00000000a8ca1171 type:MM_FILEPAGES val:33 [ 25.701944] BUG: Bad rss-counter state mm:00000000a8ca1171 type:MM_ANONPAGES val:22 [ 26.192913] BUG: Bad rss-counter state mm:0000000057573455 type:MM_FILEPAGES val:33 [ 26.193891] BUG: Bad rss-counter state mm:0000000057573455 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:26737' (ECDSA) to the list of known hosts. [ 26.426950] general protection fault, probably for non-canonical address 0xe0df1c23e000001d: 0000 [#1] PREEMPT SMP KASAN NOPTI [ 26.428363] KASAN: maybe wild-memory-access in range [0x06f9011f000000e8-0x06f9011f000000ef] [ 26.429363] CPU: 0 PID: 237 Comm: sshd Tainted: G B 6.4.0-rc7-next-20230620 #1 [ 26.430398] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 26.431373] RIP: 0010:__rb_insert_augmented+0x9d/0x8b0 [ 26.432036] Code: c2 48 c1 ea 03 42 80 3c 2a 00 0f 85 55 05 00 00 4d 8b 74 24 08 49 39 ee 0f 84 77 01 00 00 4d 85 f6 74 1c 4c 89 f2 48 c1 ea 03 <42> 80 3c 2a 00 0f 85 61 05 00 00 41 f6 06 01 0f 84 7a 04 00 00 48 [ 26.434171] RSP: 0018:ffff88800f6bf948 EFLAGS: 00010217 [ 26.434800] RAX: ffff8880192b99a0 RBX: ffff888016f352f8 RCX: ffffffff844d49f9 [ 26.435671] RDX: 00df2023e000001d RSI: 0000000000000008 RDI: ffff88800e13fcb8 [ 26.436574] RBP: ffff8880168be5c0 R08: ffff88800e13fcb8 R09: 0000000000000000 [ 26.437449] R10: 0000000000000002 R11: 00000000000b6a61 R12: ffff88800e13fcb0 [ 26.438307] R13: dffffc0000000000 R14: 06f9011f000000ed R15: ffffffff816e6340 [ 26.439204] FS: 00007f8e02a03900(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 [ 26.440109] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.440780] CR2: 00005636c23971c0 CR3: 000000000e6a2000 CR4: 0000000000350ef0 [ 26.441587] Call Trace: [ 26.441892] [ 26.442163] ? die_addr+0x3c/0xa0 [ 26.442581] ? exc_general_protection+0x125/0x220 [ 26.443164] ? asm_exc_general_protection+0x26/0x30 [ 26.443762] ? __pfx_vma_interval_tree_augment_rotate+0x10/0x10 [ 26.444461] ? __rb_insert_augmented+0x5e9/0x8b0 [ 26.445074] ? __rb_insert_augmented+0x9d/0x8b0 [ 26.445661] ? __rb_insert_augmented+0x5e9/0x8b0 [ 26.446238] ? vma_interval_tree_insert_after+0x315/0x390 [ 26.446904] dup_mmap+0xc45/0x1770 [ 26.447350] ? __pfx_dup_mmap+0x10/0x10 [ 26.447828] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 26.448409] ? _raw_spin_unlock_irqrestore+0x2c/0x50 [ 26.449038] ? trace_hardirqs_on+0x16/0x100 [ 26.449575] ? mm_init+0xb4a/0xe70 [ 26.450025] copy_process+0x3e68/0x7320 [ 26.450529] ? lock_acquire+0x434/0x4c0 [ 26.451031] ? __pfx_copy_process+0x10/0x10 [ 26.451579] ? expand_files+0x446/0x8e0 [ 26.452093] kernel_clone+0xeb/0x7d0 [ 26.452566] ? __pfx_kernel_clone+0x10/0x10 [ 26.453114] ? lock_acquire+0x434/0x4c0 [ 26.453611] ? lock_release+0x4d8/0x680 [ 26.454109] ? __pfx_lock_release+0x10/0x10 [ 26.454655] ? __pfx_lock_release+0x10/0x10 [ 26.455199] ? _raw_spin_unlock+0x1e/0x40 [ 26.455711] ? alloc_fd+0x2eb/0x760 [ 26.456191] __do_sys_clone+0xba/0x100 [ 26.456703] ? __pfx___do_sys_clone+0x10/0x10 [ 26.457273] ? fpregs_assert_state_consistent+0xbd/0xe0 [ 26.457958] do_syscall_64+0x3f/0x90 [ 26.458445] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 26.459097] RIP: 0033:0x7f8e02ec24bb [ 26.459557] Code: ed 0f 85 f8 00 00 00 64 4c 8b 0c 25 10 00 00 00 45 31 c0 4d 8d 91 d0 02 00 00 31 d2 31 f6 bf 11 00 20 01 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 91 00 00 00 41 89 c5 85 c0 0f 85 9e 00 00 [ 26.461748] RSP: 002b:00007ffcb8bed220 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 [ 26.462646] RAX: ffffffffffffffda RBX: 0000000000009da2 RCX: 00007f8e02ec24bb [ 26.463442] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 [ 26.464241] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007f8e02a03900 [ 26.465040] R10: 00007f8e02a03bd0 R11: 0000000000000246 R12: 0000000000000000 [ 26.465843] R13: 00005636c23a4d20 R14: 00005636c23b4db0 R15: 00007ffcb8bed2a0 [ 26.466664] [ 26.466942] Modules linked in: [ 26.467404] ---[ end trace 0000000000000000 ]--- [ 26.467965] RIP: 0010:__rb_insert_augmented+0x9d/0x8b0 [ 26.468589] Code: c2 48 c1 ea 03 42 80 3c 2a 00 0f 85 55 05 00 00 4d 8b 74 24 08 49 39 ee 0f 84 77 01 00 00 4d 85 f6 74 1c 4c 89 f2 48 c1 ea 03 <42> 80 3c 2a 00 0f 85 61 05 00 00 41 f6 06 01 0f 84 7a 04 00 00 48 [ 26.470806] RSP: 0018:ffff88800f6bf948 EFLAGS: 00010217 [ 26.471528] RAX: ffff8880192b99a0 RBX: ffff888016f352f8 RCX: ffffffff844d49f9 [ 26.472449] RDX: 00df2023e000001d RSI: 0000000000000008 RDI: ffff88800e13fcb8 [ 26.473385] RBP: ffff8880168be5c0 R08: ffff88800e13fcb8 R09: 0000000000000000 [ 26.474314] R10: 0000000000000002 R11: 00000000000b6a61 R12: ffff88800e13fcb0 [ 26.475257] R13: dffffc0000000000 R14: 06f9011f000000ed R15: ffffffff816e6340 [ 26.476239] FS: 00007f8e02a03900(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 [ 26.477331] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.478110] CR2: 00005636c23971c0 CR3: 000000000e6a2000 CR4: 0000000000350ef0 VM DIAGNOSIS: 07:27:57 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=ffff88806ce35000 RCX=ffffffff812d8f13 RDX=0000000000000000 RSI=0000000000000008 RDI=ffffffff85d3d350 RBP=0000000000000001 RSP=ffff88800e0a7a88 R8 =0000000000000000 R9 =fffffbfff0ba7a6a R10=ffffffff85d3d357 R11=0000000000000000 R12=0000000000000001 R13=0000000000000000 R14=ffff888016a7de20 R15=0000000000000000 RIP=ffffffff8135b960 RFL=00000216 [----AP-] 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 00007fa76da99700 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=00007f64b99e4b00 CR3=000000000dc92000 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=6d6f72662064657463656e6e6f637369 XMM02=2e303120746f6f722072657375206d6f XMM03=3a5d3832325b646873732037353a3732 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320383333 XMM06=206d6f726620746f6f7220726f662079 XMM07=00000000000000000000000000000000 XMM08=3a677562656420676f6c737973720000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff88801683a7f8 RBX=00007fffffffffff RCX=0000000000000000 RDX=ffff88801031b680 RSI=ffffffff8170b17e RDI=0000000000000006 RBP=00007f8551c04fff RSP=ffff8880169a7798 R8 =0000000000000006 R9 =00007fffffffffff R10=00007f8551c04fff R11=0000000000000000 R12=00007f8551c02000 R13=00007f8551c05000 R14=00007f8551c05000 R15=dffffc0000000000 RIP=ffffffff8170b186 RFL=00000293 [--S-A-C] 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 00007f8551c32900 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=00007f8551c11020 CR3=000000001683a000 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=652022746f6f72223d74636361207469 XMM02=3d6c616e696d72657420322e322e302e XMM03=3d656d616e74736f682022646873732f XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=652075253d64692073253d706f000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000