Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fdfd0a8b078 EFLAGS: 00000206 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007fdfd1e27f80 RCX: 00007fdfd1d08ae9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000022001200 RBP: 00007fdfd0a8b120 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000002 R13: 000000000000000b R14: 00007fdfd1e27f80 R15: 00007fff62717c48 ================================================================== BUG: KASAN: double-free or invalid-free in slab_free mm/slub.c:3519 [inline] BUG: KASAN: double-free or invalid-free in kfree+0xc8/0x220 mm/slub.c:4579 CPU: 0 PID: 1316 Comm: syz-executor.5 Not tainted 5.15.131-syzkaller-00653-gea586874d2f9 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106 print_address_description+0x87/0x3b0 mm/kasan/report.c:248 kasan_report_invalid_free+0x6b/0xa0 mm/kasan/report.c:370 ____kasan_slab_free+0x13e/0x160 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:373 kasan_slab_free include/linux/kasan.h:193 [inline] slab_free_hook mm/slub.c:1723 [inline] slab_free_freelist_hook+0xbd/0x190 mm/slub.c:1749 slab_free mm/slub.c:3519 [inline] kfree+0xc8/0x220 mm/slub.c:4579 anon_vma_name_free+0x15/0x20 mm/madvise.c:90 kref_put include/linux/kref.h:65 [inline] anon_vma_name_put include/linux/mm_inline.h:365 [inline] free_anon_vma_name include/linux/mm_inline.h:396 [inline] vm_area_free_no_check+0xa6/0x130 kernel/fork.c:405 vm_area_free kernel/fork.c:418 [inline] dup_mmap kernel/fork.c:681 [inline] dup_mm kernel/fork.c:1513 [inline] copy_mm+0xefb/0x13e0 kernel/fork.c:1565 copy_process+0x12bc/0x3260 kernel/fork.c:2256 kernel_clone+0x21e/0x9e0 kernel/fork.c:2654 __do_sys_clone kernel/fork.c:2780 [inline] __se_sys_clone kernel/fork.c:2764 [inline] __x64_sys_clone+0x23f/0x290 kernel/fork.c:2764 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7fdfd1d08ae9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fdfd0a8b078 EFLAGS: 00000206 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007fdfd1e27f80 RCX: 00007fdfd1d08ae9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000022001200 RBP: 00007fdfd0a8b120 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000002 R13: 000000000000000b R14: 00007fdfd1e27f80 R15: 00007fff62717c48 Allocated by task 26154: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:45 [inline] set_alloc_info mm/kasan/common.c:433 [inline] __kasan_slab_alloc+0xb1/0xe0 mm/kasan/common.c:466 kasan_slab_alloc include/linux/kasan.h:217 [inline] slab_post_alloc_hook+0x53/0x2c0 mm/slab.h:550 slab_alloc_node mm/slub.c:3240 [inline] slab_alloc mm/slub.c:3248 [inline] kmem_cache_alloc+0xf5/0x200 mm/slub.c:3253 vm_area_alloc+0x24/0x130 kernel/fork.c:359 mmap_region+0xb5d/0x1b60 mm/mmap.c:1780 do_mmap+0x776/0xe50 mm/mmap.c:1584 vm_mmap_pgoff+0x1dd/0x450 mm/util.c:555 vm_mmap+0x8d/0xb0 mm/util.c:575 elf_map+0x19c/0x240 fs/binfmt_elf.c:392 load_elf_binary+0xfe0/0x2750 fs/binfmt_elf.c:1141 search_binary_handler fs/exec.c:1739 [inline] exec_binprm fs/exec.c:1780 [inline] bprm_execve+0x7ae/0x14a0 fs/exec.c:1849 do_execveat_common+0x565/0x710 fs/exec.c:1954 do_execve fs/exec.c:2024 [inline] __do_sys_execve fs/exec.c:2100 [inline] __se_sys_execve fs/exec.c:2095 [inline] __x64_sys_execve+0x92/0xb0 fs/exec.c:2095 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb Last potentially related work creation: kasan_save_stack+0x3b/0x60 mm/kasan/common.c:38 __kasan_record_aux_stack+0xd3/0xf0 mm/kasan/generic.c:348 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:358 __call_rcu kernel/rcu/tree.c:2994 [inline] call_rcu+0x133/0x12a0 kernel/rcu/tree.c:3074 free_vm_area_struct kernel/fork.c:394 [inline] vm_area_free_no_check+0xff/0x130 kernel/fork.c:408 vm_area_free+0x53/0x60 kernel/fork.c:418 remove_vma mm/mmap.c:190 [inline] exit_mmap+0x50d/0x6f0 mm/mmap.c:3217 __mmput+0x95/0x310 kernel/fork.c:1171 mmput+0x5b/0x170 kernel/fork.c:1194 copy_process+0x2766/0x3260 kernel/fork.c:2517 kernel_clone+0x21e/0x9e0 kernel/fork.c:2654 __do_sys_clone kernel/fork.c:2780 [inline] __se_sys_clone kernel/fork.c:2764 [inline] __x64_sys_clone+0x23f/0x290 kernel/fork.c:2764 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb The buggy address belongs to the object at ffff88812d6b3000 which belongs to the cache vm_area_struct of size 232 The buggy address is located 88 bytes inside of 232-byte region [ffff88812d6b3000, ffff88812d6b30e8) The buggy address belongs to the page: page:ffffea0004b5acc0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x12d6b3 flags: 0x4000000000000200(slab|zone=1) raw: 4000000000000200 0000000000000000 0000000200000001 ffff8881001bdb00 raw: 0000000000000000 00000000000d000d 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x112cc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY), pid 25516, ts 1315170675468, free_ts 1314870558742 set_page_owner include/linux/page_owner.h:33 [inline] post_alloc_hook+0x1a3/0x1b0 mm/page_alloc.c:2602 prep_new_page+0x1b/0x110 mm/page_alloc.c:2608 get_page_from_freelist+0x3550/0x35d0 mm/page_alloc.c:4482 __alloc_pages+0x206/0x5e0 mm/page_alloc.c:5773 allocate_slab mm/slub.c:1932 [inline] new_slab+0x9a/0x4e0 mm/slub.c:1995 ___slab_alloc+0x39e/0x830 mm/slub.c:3028 __slab_alloc+0x4a/0x90 mm/slub.c:3115 slab_alloc_node mm/slub.c:3206 [inline] slab_alloc mm/slub.c:3248 [inline] kmem_cache_alloc+0x134/0x200 mm/slub.c:3253 vm_area_dup+0x26/0x230 kernel/fork.c:367 dup_mmap kernel/fork.c:601 [inline] dup_mm kernel/fork.c:1513 [inline] copy_mm+0x9a1/0x13e0 kernel/fork.c:1565 copy_process+0x12bc/0x3260 kernel/fork.c:2256 kernel_clone+0x21e/0x9e0 kernel/fork.c:2654 __do_sys_clone kernel/fork.c:2780 [inline] __se_sys_clone kernel/fork.c:2764 [inline] __x64_sys_clone+0x23f/0x290 kernel/fork.c:2764 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb page last free stack trace: reset_page_owner include/linux/page_owner.h:26 [inline] free_pages_prepare mm/page_alloc.c:1469 [inline] free_pcp_prepare mm/page_alloc.c:1541 [inline] free_unref_page_prepare+0x7c8/0x7d0 mm/page_alloc.c:3531 free_unref_page+0xe6/0x730 mm/page_alloc.c:3613 free_the_page mm/page_alloc.c:802 [inline] __free_pages+0x61/0xf0 mm/page_alloc.c:5849 __free_slab+0xec/0x1d0 mm/slub.c:2020 free_slab mm/slub.c:2035 [inline] discard_slab mm/slub.c:2041 [inline] __unfreeze_partials+0x165/0x1a0 mm/slub.c:2527 put_cpu_partial+0xc4/0x120 mm/slub.c:2607 __slab_free+0x1c8/0x290 mm/slub.c:3388 do_slab_free mm/slub.c:3507 [inline] ___cache_free+0x109/0x120 mm/slub.c:3526 qlink_free+0x4d/0x90 mm/kasan/quarantine.c:157 qlist_free_all+0x44/0xb0 mm/kasan/quarantine.c:176 kasan_quarantine_reduce+0x15a/0x180 mm/kasan/quarantine.c:283 __kasan_slab_alloc+0x2f/0xe0 mm/kasan/common.c:443 kasan_slab_alloc include/linux/kasan.h:217 [inline] slab_post_alloc_hook+0x53/0x2c0 mm/slab.h:550 slab_alloc_node mm/slub.c:3240 [inline] slab_alloc mm/slub.c:3248 [inline] kmem_cache_alloc+0xf5/0x200 mm/slub.c:3253 kmem_cache_zalloc include/linux/slab.h:723 [inline] jbd2_alloc_handle include/linux/jbd2.h:1598 [inline] new_handle fs/jbd2/transaction.c:481 [inline] jbd2__journal_start+0x150/0x710 fs/jbd2/transaction.c:508 __ext4_journal_start_sb+0xfa/0x2c0 fs/ext4/ext4_jbd2.c:105 Memory state around the buggy address: ffff88812d6b2f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88812d6b2f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88812d6b3000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff88812d6b3080: 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc ffff88812d6b3100: fc fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00 ================================================================== ---------------- Code disassembly (best guess): 0: 28 00 sub %al,(%rax) 2: 00 00 add %al,(%rax) 4: 75 05 jne 0xb 6: 48 83 c4 28 add $0x28,%rsp a: c3 ret b: e8 e1 20 00 00 call 0x20f1 10: 90 nop 11: 48 89 f8 mov %rdi,%rax 14: 48 89 f7 mov %rsi,%rdi 17: 48 89 d6 mov %rdx,%rsi 1a: 48 89 ca mov %rcx,%rdx 1d: 4d 89 c2 mov %r8,%r10 20: 4d 89 c8 mov %r9,%r8 23: 4c 8b 4c 24 08 mov 0x8(%rsp),%r9 28: 0f 05 syscall * 2a: 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax <-- trapping instruction 30: 73 01 jae 0x33 32: c3 ret 33: 48 c7 c1 b0 ff ff ff mov $0xffffffffffffffb0,%rcx 3a: f7 d8 neg %eax 3c: 64 89 01 mov %eax,%fs:(%rcx) 3f: 48 rex.W