device team0 entered promiscuous mode device team_slave_0 entered promiscuous mode device team_slave_1 entered promiscuous mode 8021q: adding VLAN 0 to HW filter on device team0 ================================================================== BUG: KASAN: use-after-free in sector_in_part block/genhd.c:260 [inline] BUG: KASAN: use-after-free in disk_map_sector_rcu+0x475/0x490 block/genhd.c:288 Read of size 8 at addr ffff8880954f3640 by task blkid/4125 CPU: 0 PID: 4125 Comm: blkid Not tainted 5.0.0+ #11 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 print_address_description.cold+0x7c/0x20d mm/kasan/report.c:187 kasan_report.cold+0x1b/0x40 mm/kasan/report.c:317 __asan_report_load8_noabort+0x14/0x20 mm/kasan/generic_report.c:132 sector_in_part block/genhd.c:260 [inline] disk_map_sector_rcu+0x475/0x490 block/genhd.c:288 blk_account_io_start+0x507/0xcf0 block/blk-core.c:1363 blk_mq_bio_to_request block/blk-mq.c:1757 [inline] blk_mq_make_request+0x656/0x1790 block/blk-mq.c:1971 generic_make_request+0x740/0x12d0 block/blk-core.c:1090 submit_bio+0xba/0x480 block/blk-core.c:1198 mpage_bio_submit fs/mpage.c:66 [inline] mpage_readpages+0x466/0x630 fs/mpage.c:410 blkdev_readpages+0x2d/0x40 fs/block_dev.c:615 read_pages+0x10f/0x550 mm/readahead.c:125 __do_page_cache_readahead+0x4c6/0x5c0 mm/readahead.c:211 force_page_cache_readahead+0x1e9/0x360 mm/readahead.c:242 page_cache_sync_readahead mm/readahead.c:521 [inline] page_cache_sync_readahead+0x4b9/0x520 mm/readahead.c:508 generic_file_buffered_read mm/filemap.c:2102 [inline] generic_file_read_iter+0x1582/0x2870 mm/filemap.c:2375 blkdev_read_iter+0x120/0x190 fs/block_dev.c:1967 call_read_iter include/linux/fs.h:1848 [inline] new_sync_read fs/read_write.c:406 [inline] __vfs_read+0x610/0x8c0 fs/read_write.c:418 vfs_read+0x194/0x3e0 fs/read_write.c:452 ksys_read+0xea/0x1f0 fs/read_write.c:578 __do_sys_read fs/read_write.c:588 [inline] __se_sys_read fs/read_write.c:586 [inline] __x64_sys_read+0x73/0xb0 fs/read_write.c:586 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fc863f10310 Code: 73 01 c3 48 8b 0d 28 4b 2b 00 31 d2 48 29 c2 64 89 11 48 83 c8 ff eb ea 90 90 83 3d e5 a2 2b 00 00 75 10 b8 00 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 6e 8a 01 00 48 89 04 24 RSP: 002b:00007ffe47a5f808 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc863f10310 RDX: 0000000000000400 RSI: 000000000226ac58 RDI: 0000000000000003 RBP: 000000000226ac30 R08: 0000000000000028 R09: 0000000001680000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000226a030 R13: 0000000000000400 R14: 000000000226a080 R15: 000000000226ac48 Allocated by task 3543: save_stack+0x45/0xd0 mm/kasan/common.c:75 set_track mm/kasan/common.c:87 [inline] __kasan_kmalloc mm/kasan/common.c:497 [inline] __kasan_kmalloc.constprop.0+0xcf/0xe0 mm/kasan/common.c:470 kasan_kmalloc+0x9/0x10 mm/kasan/common.c:511 kmem_cache_alloc_trace+0x151/0x760 mm/slab.c:3621 kmalloc include/linux/slab.h:545 [inline] kzalloc include/linux/slab.h:740 [inline] add_partition+0x1a6/0xe30 block/partition-generic.c:322 rescan_partitions+0x668/0xa20 block/partition-generic.c:618 __blkdev_reread_part+0x1a2/0x230 block/ioctl.c:173 blkdev_reread_part+0x27/0x40 block/ioctl.c:193 loop_reread_partitions+0x1c/0x40 drivers/block/loop.c:633 loop_set_status+0xe57/0x1380 drivers/block/loop.c:1282 loop_set_status64+0xc2/0x120 drivers/block/loop.c:1402 lo_ioctl+0x43b/0x20d0 drivers/block/loop.c:1545 __blkdev_driver_ioctl block/ioctl.c:303 [inline] blkdev_ioctl+0xee8/0x1c40 block/ioctl.c:605 block_ioctl+0xee/0x130 fs/block_dev.c:1914 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:696 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 15370: save_stack+0x45/0xd0 mm/kasan/common.c:75 set_track mm/kasan/common.c:87 [inline] __kasan_slab_free+0x102/0x150 mm/kasan/common.c:459 kasan_slab_free+0xe/0x10 mm/kasan/common.c:467 __cache_free mm/slab.c:3498 [inline] kfree+0xcf/0x230 mm/slab.c:3821 part_release+0xaa/0xd0 block/partition-generic.c:228 device_release+0x7d/0x210 drivers/base/core.c:1064 kobject_cleanup lib/kobject.c:662 [inline] kobject_release lib/kobject.c:691 [inline] kref_put include/linux/kref.h:67 [inline] kobject_put.cold+0x28f/0x2ec lib/kobject.c:708 put_device+0x20/0x30 drivers/base/core.c:2205 delete_partition_work_fn+0x14a/0x1b0 block/partition-generic.c:256 process_one_work+0x98e/0x1790 kernel/workqueue.c:2259 worker_thread+0x98/0xe40 kernel/workqueue.c:2405 kthread+0x357/0x430 kernel/kthread.c:253 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 The buggy address belongs to the object at ffff8880954f3640 which belongs to the cache kmalloc-2k of size 2048 The buggy address is located 0 bytes inside of 2048-byte region [ffff8880954f3640, ffff8880954f3e40) The buggy address belongs to the page: page:ffffea0002553c80 count:1 mapcount:0 mapping:ffff88812c3f0c40 index:0x0 compound_mapcount: 0 flags: 0x1fffc0000010200(slab|head) raw: 01fffc0000010200 ffffea00017ddc88 ffffea0002a32c88 ffff88812c3f0c40 raw: 0000000000000000 ffff8880954f2540 0000000100000003 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8880954f3500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8880954f3580: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc >ffff8880954f3600: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb ^ ffff8880954f3680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8880954f3700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================