================================================================== BUG: KASAN: double-free in slab_free mm/slub.c:3809 [inline] BUG: KASAN: double-free in __kmem_cache_free+0xc0/0x180 mm/slub.c:3822 Free of addr ffff888051c22900 by task syz-executor.1/5220 CPU: 0 PID: 5220 Comm: syz-executor.1 Not tainted 6.7.0-rc1-syzkaller-00213-g791c8ab095f7 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:364 [inline] print_report+0xc4/0x620 mm/kasan/report.c:475 kasan_report_invalid_free+0xab/0xd0 mm/kasan/report.c:550 ____kasan_slab_free+0x180/0x1b0 mm/kasan/common.c:225 kasan_slab_free include/linux/kasan.h:164 [inline] slab_free_hook mm/slub.c:1800 [inline] slab_free_freelist_hook+0x114/0x1e0 mm/slub.c:1826 slab_free mm/slub.c:3809 [inline] __kmem_cache_free+0xc0/0x180 mm/slub.c:3822 hfs_btree_close+0xac/0x390 fs/hfs/btree.c:154 hfs_mdb_put+0xbf/0x380 fs/hfs/mdb.c:360 generic_shutdown_super+0x161/0x3d0 fs/super.c:696 kill_block_super+0x3b/0x90 fs/super.c:1667 deactivate_locked_super+0xbc/0x1a0 fs/super.c:484 deactivate_super+0xde/0x100 fs/super.c:517 cleanup_mnt+0x222/0x450 fs/namespace.c:1256 task_work_run+0x14d/0x240 kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x217/0x240 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x1e/0x60 kernel/entry/common.c:296 __do_fast_syscall_32+0x6f/0xe0 arch/x86/entry/common.c:233 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:255 entry_SYSENTER_compat_after_hwframe+0x70/0x7a RIP: 0023:0xf7f87579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000ff99dcf8 EFLAGS: 00000292 ORIG_RAX: 0000000000000034 RAX: 0000000000000000 RBX: 00000000ff99dda0 RCX: 000000000000000a RDX: 00000000f7353ff4 RSI: 00000000f72a53bd RDI: 00000000ff99ee44 RBP: 00000000ff99dda0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Allocated by task 8783: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0xa2/0xb0 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:198 [inline] __do_kmalloc_node mm/slab_common.c:1007 [inline] __kmalloc+0x59/0x90 mm/slab_common.c:1020 kmalloc include/linux/slab.h:604 [inline] kzalloc include/linux/slab.h:721 [inline] __hfs_bnode_create+0x108/0x850 fs/hfs/bnode.c:259 hfs_bnode_find+0x2cf/0xcb0 fs/hfs/bnode.c:335 hfs_brec_find+0x2af/0x510 fs/hfs/bfind.c:126 hfs_cat_create+0x58d/0x810 fs/hfs/catalog.c:124 hfs_create+0x67/0xe0 fs/hfs/dir.c:202 lookup_open.isra.0+0x1095/0x13b0 fs/namei.c:3477 open_last_lookups fs/namei.c:3546 [inline] path_openat+0x922/0x2c50 fs/namei.c:3776 do_filp_open+0x1de/0x430 fs/namei.c:3809 do_sys_openat2+0x176/0x1e0 fs/open.c:1440 do_sys_open fs/open.c:1455 [inline] __do_compat_sys_open fs/open.c:1506 [inline] __se_compat_sys_open fs/open.c:1504 [inline] __ia32_compat_sys_open+0x147/0x1d0 fs/open.c:1504 do_syscall_32_irqs_on arch/x86/entry/common.c:164 [inline] __do_fast_syscall_32+0x62/0xe0 arch/x86/entry/common.c:230 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:255 entry_SYSENTER_compat_after_hwframe+0x70/0x7a Freed by task 108: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:522 ____kasan_slab_free mm/kasan/common.c:236 [inline] ____kasan_slab_free+0x15b/0x1b0 mm/kasan/common.c:200 kasan_slab_free include/linux/kasan.h:164 [inline] slab_free_hook mm/slub.c:1800 [inline] slab_free_freelist_hook+0x114/0x1e0 mm/slub.c:1826 slab_free mm/slub.c:3809 [inline] __kmem_cache_free+0xc0/0x180 mm/slub.c:3822 hfs_release_folio+0x431/0x570 fs/hfs/inode.c:123 filemap_release_folio+0x1f1/0x270 mm/filemap.c:4076 shrink_folio_list+0x2991/0x3f00 mm/vmscan.c:1368 evict_folios+0x6e7/0x1b90 mm/vmscan.c:4499 try_to_shrink_lruvec+0x769/0xb00 mm/vmscan.c:4678 shrink_one+0x45f/0x700 mm/vmscan.c:4722 shrink_many mm/vmscan.c:4776 [inline] lru_gen_shrink_node mm/vmscan.c:4893 [inline] shrink_node+0x20cd/0x3790 mm/vmscan.c:5833 kswapd_shrink_node mm/vmscan.c:6638 [inline] balance_pgdat+0x9d2/0x1a90 mm/vmscan.c:6828 kswapd+0x5be/0xbf0 mm/vmscan.c:7088 kthread+0x2c6/0x3a0 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 Last potentially related work creation: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 __kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:492 insert_work+0x38/0x230 kernel/workqueue.c:1647 __queue_work+0xcdc/0x11f0 kernel/workqueue.c:1803 queue_work_on+0xed/0x110 kernel/workqueue.c:1834 queue_work include/linux/workqueue.h:562 [inline] addr_event.constprop.0+0x391/0x560 drivers/infiniband/core/roce_gid_mgmt.c:853 inet6addr_event+0x113/0x180 drivers/infiniband/core/roce_gid_mgmt.c:883 notifier_call_chain+0xb6/0x3b0 kernel/notifier.c:93 atomic_notifier_call_chain+0x71/0x1b0 kernel/notifier.c:231 ipv6_add_addr+0x1400/0x2040 net/ipv6/addrconf.c:1176 addrconf_add_linklocal+0x299/0x640 net/ipv6/addrconf.c:3264 addrconf_addr_gen+0x366/0x3b0 net/ipv6/addrconf.c:3395 addrconf_dev_config net/ipv6/addrconf.c:3440 [inline] addrconf_init_auto_addrs+0x446/0x820 net/ipv6/addrconf.c:3518 addrconf_notify+0x714/0x1920 net/ipv6/addrconf.c:3691 notifier_call_chain+0xb6/0x3b0 kernel/notifier.c:93 call_netdevice_notifiers_info+0xbe/0x130 net/core/dev.c:1967 netdev_state_change net/core/dev.c:1349 [inline] netdev_state_change+0x111/0x140 net/core/dev.c:1342 linkwatch_do_dev+0x122/0x150 net/core/link_watch.c:182 __linkwatch_run_queue+0x233/0x680 net/core/link_watch.c:235 linkwatch_event+0x8f/0xc0 net/core/link_watch.c:278 process_one_work+0x886/0x15d0 kernel/workqueue.c:2630 process_scheduled_works kernel/workqueue.c:2703 [inline] worker_thread+0x8b9/0x1290 kernel/workqueue.c:2784 kthread+0x2c6/0x3a0 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 The buggy address belongs to the object at ffff888051c22900 which belongs to the cache kmalloc-192 of size 192 The buggy address is located 0 bytes inside of 192-byte region [ffff888051c22900, ffff888051c229c0) The buggy address belongs to the physical page: page:ffffea0001470880 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x51c22 flags: 0x4fff00000000800(slab|node=1|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 04fff00000000800 ffff888013042a00 ffffea00011068c0 dead000000000004 raw: 0000000000000000 0000000080100010 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 5211, tgid 5211 (syz-executor.0), ts 158850736380, free_ts 156638627431 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x2d0/0x350 mm/page_alloc.c:1537 prep_new_page mm/page_alloc.c:1544 [inline] get_page_from_freelist+0xa25/0x36d0 mm/page_alloc.c:3312 __alloc_pages+0x22e/0x2420 mm/page_alloc.c:4568 __alloc_pages_node include/linux/gfp.h:238 [inline] alloc_slab_page mm/slub.c:1872 [inline] allocate_slab mm/slub.c:2017 [inline] new_slab+0xca/0x3c0 mm/slub.c:2070 ___slab_alloc+0x979/0x1500 mm/slub.c:3223 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3322 __slab_alloc_node mm/slub.c:3375 [inline] slab_alloc_node mm/slub.c:3468 [inline] __kmem_cache_alloc_node+0x131/0x310 mm/slub.c:3517 __do_kmalloc_node mm/slab_common.c:1006 [inline] __kmalloc_node+0x4c/0x90 mm/slab_common.c:1014 kmalloc_array_node include/linux/slab.h:698 [inline] kcalloc_node include/linux/slab.h:703 [inline] memcg_alloc_slab_cgroups+0xa9/0x180 mm/memcontrol.c:2968 account_slab mm/slab.h:637 [inline] allocate_slab mm/slub.c:2035 [inline] new_slab+0x2fd/0x3c0 mm/slub.c:2070 ___slab_alloc+0x979/0x1500 mm/slub.c:3223 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3322 __slab_alloc_node mm/slub.c:3375 [inline] slab_alloc_node mm/slub.c:3468 [inline] slab_alloc mm/slub.c:3486 [inline] __kmem_cache_alloc_lru mm/slub.c:3493 [inline] kmem_cache_alloc+0x2dc/0x2f0 mm/slub.c:3502 vma_lock_alloc kernel/fork.c:459 [inline] vm_area_dup+0x53/0x2f0 kernel/fork.c:512 dup_mmap+0x93c/0x1d90 kernel/fork.c:710 dup_mm kernel/fork.c:1691 [inline] copy_mm kernel/fork.c:1740 [inline] copy_process+0x43c8/0x73f0 kernel/fork.c:2502 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1137 [inline] free_unref_page_prepare+0x4fa/0xaa0 mm/page_alloc.c:2347 free_unref_page+0x33/0x3b0 mm/page_alloc.c:2487 qlink_free mm/kasan/quarantine.c:168 [inline] qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:187 kasan_quarantine_reduce+0x18e/0x1d0 mm/kasan/quarantine.c:294 __kasan_slab_alloc+0x65/0x90 mm/kasan/common.c:305 kasan_slab_alloc include/linux/kasan.h:188 [inline] slab_post_alloc_hook mm/slab.h:763 [inline] slab_alloc_node mm/slub.c:3478 [inline] slab_alloc mm/slub.c:3486 [inline] __kmem_cache_alloc_lru mm/slub.c:3493 [inline] kmem_cache_alloc+0x15d/0x2f0 mm/slub.c:3502 zswap_entry_cache_alloc mm/zswap.c:302 [inline] zswap_store+0x533/0x23d0 mm/zswap.c:1263 swap_writepage+0x8b/0x1e0 mm/page_io.c:198 pageout+0x399/0x9d0 mm/vmscan.c:654 shrink_folio_list+0x2fb0/0x3f00 mm/vmscan.c:1315 evict_folios+0x6e7/0x1b90 mm/vmscan.c:4499 try_to_shrink_lruvec+0x769/0xb00 mm/vmscan.c:4678 shrink_one+0x45f/0x700 mm/vmscan.c:4722 shrink_many mm/vmscan.c:4776 [inline] lru_gen_shrink_node mm/vmscan.c:4893 [inline] shrink_node+0x20cd/0x3790 mm/vmscan.c:5833 kswapd_shrink_node mm/vmscan.c:6638 [inline] balance_pgdat+0x9d2/0x1a90 mm/vmscan.c:6828 kswapd+0x5be/0xbf0 mm/vmscan.c:7088 Memory state around the buggy address: ffff888051c22800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888051c22880: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc >ffff888051c22900: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888051c22980: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff888051c22a00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 10 06 adc %al,(%rsi) 2: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 6: 10 07 adc %al,(%rdi) 8: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi c: 10 08 adc %cl,(%rax) e: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1e: 00 51 52 add %dl,0x52(%rcx) 21: 55 push %rbp 22: 89 e5 mov %esp,%ebp 24: 0f 34 sysenter 26: cd 80 int $0x80 * 28: 5d pop %rbp <-- trapping instruction 29: 5a pop %rdx 2a: 59 pop %rcx 2b: c3 ret 2c: 90 nop 2d: 90 nop 2e: 90 nop 2f: 90 nop 30: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 37: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi