loop0: detected capacity change from 0 to 4096 ntfs3: loop0: Different NTFS' sector size (1024) and media sector size (512) ================================================================== BUG: KASAN: slab-out-of-bounds in ntfs_trim_fs+0x710/0x9e0 fs/ntfs3/bitmap.c:1434 Read of size 2 at addr ffff88804047aa02 by task syz-executor.0/26557 CPU: 0 PID: 26557 Comm: syz-executor.0 Not tainted 6.1.0-syzkaller-10971-g041fae9c105a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1b1/0x290 lib/dump_stack.c:106 print_address_description+0x74/0x340 mm/kasan/report.c:306 print_report+0x107/0x1f0 mm/kasan/report.c:417 kasan_report+0xcd/0x100 mm/kasan/report.c:517 ntfs_trim_fs+0x710/0x9e0 fs/ntfs3/bitmap.c:1434 ntfs_ioctl_fitrim fs/ntfs3/file.c:40 [inline] ntfs_ioctl+0x2d4/0x3a0 fs/ntfs3/file.c:57 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0xfb/0x170 fs/ioctl.c:856 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+0x63/0xcd RIP: 0033:0x7f812828c0d9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f812903a168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f81283abf80 RCX: 00007f812828c0d9 RDX: 00000000200000c0 RSI: 00000000c0185879 RDI: 0000000000000004 RBP: 00007f81282e7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe1da7e6bf R14: 00007f812903a300 R15: 0000000000022000 Allocated by task 26557: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x3d/0x60 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:371 [inline] __kasan_kmalloc+0x97/0xb0 mm/kasan/common.c:380 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slab_common.c:968 [inline] __kmalloc+0xaf/0x190 mm/slab_common.c:981 kmalloc_array include/linux/slab.h:636 [inline] kcalloc include/linux/slab.h:667 [inline] wnd_init+0x1db/0x310 fs/ntfs3/bitmap.c:664 ntfs_fill_super+0x31b5/0x4370 fs/ntfs3/super.c:1118 get_tree_bdev+0x400/0x620 fs/super.c:1282 vfs_get_tree+0x88/0x270 fs/super.c:1489 do_new_mount+0x289/0xad0 fs/namespace.c:3145 do_mount fs/namespace.c:3488 [inline] __do_sys_mount fs/namespace.c:3697 [inline] __se_sys_mount+0x2d3/0x3c0 fs/namespace.c:3674 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+0x63/0xcd The buggy address belongs to the object at ffff88804047aa00 which belongs to the cache kmalloc-8 of size 8 The buggy address is located 2 bytes inside of 8-byte region [ffff88804047aa00, ffff88804047aa08) The buggy address belongs to the physical page: page:ffffea0001011e80 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x4047a anon flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000200 ffff888012841280 0000000000000000 dead000000000001 raw: 0000000000000000 0000000080660066 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 0x112a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_HARDWALL), pid 22, tgid 22 (kworker/1:0), ts 170131218554, free_ts 170130438798 prep_new_page mm/page_alloc.c:2531 [inline] get_page_from_freelist+0x742/0x7c0 mm/page_alloc.c:4283 __alloc_pages+0x259/0x560 mm/page_alloc.c:5549 alloc_slab_page+0xbd/0x190 mm/slub.c:1851 allocate_slab+0x5e/0x3c0 mm/slub.c:1998 new_slab mm/slub.c:2051 [inline] ___slab_alloc+0x782/0xe20 mm/slub.c:3193 __slab_alloc mm/slub.c:3292 [inline] __slab_alloc_node mm/slub.c:3345 [inline] slab_alloc_node mm/slub.c:3442 [inline] __kmem_cache_alloc_node+0x25b/0x340 mm/slub.c:3491 __do_kmalloc_node mm/slab_common.c:967 [inline] __kmalloc+0x9e/0x190 mm/slab_common.c:981 kmalloc_array include/linux/slab.h:636 [inline] kcalloc include/linux/slab.h:667 [inline] nsim_fib6_event_init drivers/net/netdevsim/fib.c:810 [inline] nsim_fib6_prepare_event drivers/net/netdevsim/fib.c:947 [inline] nsim_fib_event_schedule_work drivers/net/netdevsim/fib.c:1003 [inline] nsim_fib_event_nb+0x1e5/0xfd0 drivers/net/netdevsim/fib.c:1043 notifier_call_chain kernel/notifier.c:87 [inline] atomic_notifier_call_chain+0x157/0x260 kernel/notifier.c:225 call_fib_notifiers+0x2d/0x60 net/core/fib_notifier.c:35 call_fib6_entry_notifiers net/ipv6/ip6_fib.c:401 [inline] fib6_add_rt2node net/ipv6/ip6_fib.c:1223 [inline] fib6_add+0x1c4a/0x3d10 net/ipv6/ip6_fib.c:1477 __ip6_ins_rt net/ipv6/route.c:1302 [inline] ip6_ins_rt+0x12a/0x1b0 net/ipv6/route.c:1312 __ipv6_ifa_notify+0x56d/0xe20 net/ipv6/addrconf.c:6157 ipv6_ifa_notify net/ipv6/addrconf.c:6196 [inline] addrconf_dad_completed+0x167/0xc80 net/ipv6/addrconf.c:4209 addrconf_dad_work+0xd61/0x16a0 process_one_work+0x877/0xdb0 kernel/workqueue.c:2289 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1446 [inline] free_pcp_prepare+0x751/0x780 mm/page_alloc.c:1496 free_unref_page_prepare mm/page_alloc.c:3369 [inline] free_unref_page+0x19/0x4c0 mm/page_alloc.c:3464 discard_slab mm/slub.c:2098 [inline] __unfreeze_partials+0x1a5/0x1e0 mm/slub.c:2637 put_cpu_partial+0x106/0x170 mm/slub.c:2713 qlist_free_all+0x2b/0x70 mm/kasan/quarantine.c:187 kasan_quarantine_reduce+0x156/0x170 mm/kasan/quarantine.c:294 __kasan_slab_alloc+0x1f/0x70 mm/kasan/common.c:302 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slab.h:761 [inline] slab_alloc_node mm/slub.c:3452 [inline] kmem_cache_alloc_node+0x1dc/0x390 mm/slub.c:3497 __alloc_skb+0xd7/0x2c0 net/core/skbuff.c:552 alloc_skb include/linux/skbuff.h:1270 [inline] alloc_skb_with_frags+0xb4/0x780 net/core/skbuff.c:6192 sock_alloc_send_pskb+0x938/0xa70 net/core/sock.c:2741 sock_alloc_send_skb include/net/sock.h:1884 [inline] mld_newpack+0x19f/0xa30 net/ipv6/mcast.c:1748 add_grhead+0x5e/0x290 net/ipv6/mcast.c:1851 add_grec+0x14c9/0x17c0 net/ipv6/mcast.c:1989 mld_send_initial_cr+0x1f6/0x370 net/ipv6/mcast.c:2236 ipv6_mc_dad_complete+0x81/0x390 net/ipv6/mcast.c:2247 Memory state around the buggy address: ffff88804047a900: fc fc fb fc fc fc fc fb fc fc fc fc fb fc fc fc ffff88804047a980: fc fb fc fc fc fc fb fc fc fc fc 05 fc fc fc fc >ffff88804047aa00: 02 fc fc fc fc fb fc fc fc fc fb fc fc fc fc fb ^ ffff88804047aa80: fc fc fc fc fb fc fc fc fc fb fc fc fc fc fb fc ffff88804047ab00: fc fc fc fb fc fc fc fc fb fc fc fc fc fb fc fc ==================================================================