ERROR: (device loop0): xtSearch: XT_GETPAGE: xtree page corrupt ERROR: (device loop0): xtSearch: XT_GETPAGE: xtree page corrupt ERROR: (device loop0): xtSearch: XT_GETPAGE: xtree page corrupt ================================================================== BUG: KASAN: use-after-free in __wake_up_common+0x607/0x650 kernel/sched/wait.c:80 kernel/sched/wait.c:80 Read of size 8 at addr ffff8880a4921888 by task loop0/14671 CPU: 1 PID: 14671 Comm: loop0 Not tainted 4.19.211-syzkaller #0 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 lib/dump_stack.c:77 [inline] lib/dump_stack.c:118 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 lib/dump_stack.c:118 print_address_description.cold+0x54/0x219 mm/kasan/report.c:256 mm/kasan/report.c:256 kasan_report_error.cold+0x8a/0x1b9 mm/kasan/report.c:354 mm/kasan/report.c:354 kasan_report mm/kasan/report.c:412 [inline] kasan_report mm/kasan/report.c:412 [inline] mm/kasan/report.c:433 __asan_report_load8_noabort+0x88/0x90 mm/kasan/report.c:433 mm/kasan/report.c:433 __wake_up_common+0x607/0x650 kernel/sched/wait.c:80 kernel/sched/wait.c:80 __wake_up_common_lock+0xcd/0x170 kernel/sched/wait.c:121 kernel/sched/wait.c:121 lbmIODone+0x44b/0xf40 fs/jfs/jfs_logmgr.c:2308 fs/jfs/jfs_logmgr.c:2308 bio_endio+0x488/0x830 block/bio.c:1780 block/bio.c:1780 req_bio_endio block/blk-core.c:278 [inline] req_bio_endio block/blk-core.c:278 [inline] block/blk-core.c:3112 blk_update_request+0x30f/0xaf0 block/blk-core.c:3112 block/blk-core.c:3112 blk_mq_end_request+0x4a/0x340 block/blk-mq.c:544 block/blk-mq.c:544 lo_complete_rq+0x201/0x2d0 drivers/block/loop.c:487 drivers/block/loop.c:487 __blk_mq_complete_request block/blk-mq.c:583 [inline] __blk_mq_complete_request block/blk-mq.c:583 [inline] block/blk-mq.c:620 blk_mq_complete_request+0x472/0x660 block/blk-mq.c:620 block/blk-mq.c:620 loop_handle_cmd drivers/block/loop.c:1931 [inline] loop_handle_cmd drivers/block/loop.c:1931 [inline] drivers/block/loop.c:1940 loop_queue_work+0x274/0x20c0 drivers/block/loop.c:1940 drivers/block/loop.c:1940 kthread_worker_fn+0x292/0x730 kernel/kthread.c:700 kernel/kthread.c:700 kthread+0x33f/0x460 kernel/kthread.c:259 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 arch/x86/entry/entry_64.S:415 Allocated by task 14669: kmem_cache_alloc_trace+0x12f/0x380 mm/slab.c:3625 mm/slab.c:3625 kmalloc include/linux/slab.h:515 [inline] lbmLogInit fs/jfs/jfs_logmgr.c:1843 [inline] kmalloc include/linux/slab.h:515 [inline] fs/jfs/jfs_logmgr.c:1292 lbmLogInit fs/jfs/jfs_logmgr.c:1843 [inline] fs/jfs/jfs_logmgr.c:1292 lmLogInit+0x301/0x13e0 fs/jfs/jfs_logmgr.c:1292 fs/jfs/jfs_logmgr.c:1292 open_inline_log fs/jfs/jfs_logmgr.c:1197 [inline] open_inline_log fs/jfs/jfs_logmgr.c:1197 [inline] fs/jfs/jfs_logmgr.c:1090 lmLogOpen+0x718/0x11e0 fs/jfs/jfs_logmgr.c:1090 fs/jfs/jfs_logmgr.c:1090 jfs_mount_rw+0x286/0x4b0 fs/jfs/jfs_mount.c:272 fs/jfs/jfs_mount.c:272 jfs_fill_super+0x814/0xb50 fs/jfs/super.c:598 fs/jfs/super.c:598 mount_bdev+0x2fc/0x3b0 fs/super.c:1158 fs/super.c:1158 mount_fs+0xa3/0x310 fs/super.c:1261 fs/super.c:1261 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961 fs/namespace.c:961 vfs_kern_mount fs/namespace.c:951 [inline] do_new_mount fs/namespace.c:2492 [inline] vfs_kern_mount fs/namespace.c:951 [inline] fs/namespace.c:2822 do_new_mount fs/namespace.c:2492 [inline] fs/namespace.c:2822 do_mount+0x115c/0x2f50 fs/namespace.c:2822 fs/namespace.c:2822 ksys_mount+0xcf/0x130 fs/namespace.c:3038 fs/namespace.c:3038 __do_sys_mount fs/namespace.c:3052 [inline] __se_sys_mount fs/namespace.c:3049 [inline] __do_sys_mount fs/namespace.c:3052 [inline] fs/namespace.c:3049 __se_sys_mount fs/namespace.c:3049 [inline] fs/namespace.c:3049 __x64_sys_mount+0xba/0x150 fs/namespace.c:3049 fs/namespace.c:3049 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 14669: __cache_free mm/slab.c:3503 [inline] __cache_free mm/slab.c:3503 [inline] mm/slab.c:3822 kfree+0xcc/0x210 mm/slab.c:3822 mm/slab.c:3822 lbmLogShutdown fs/jfs/jfs_logmgr.c:1886 [inline] lbmLogShutdown fs/jfs/jfs_logmgr.c:1886 [inline] fs/jfs/jfs_logmgr.c:1438 lmLogInit+0xf7a/0x13e0 fs/jfs/jfs_logmgr.c:1438 fs/jfs/jfs_logmgr.c:1438 open_inline_log fs/jfs/jfs_logmgr.c:1197 [inline] open_inline_log fs/jfs/jfs_logmgr.c:1197 [inline] fs/jfs/jfs_logmgr.c:1090 lmLogOpen+0x718/0x11e0 fs/jfs/jfs_logmgr.c:1090 fs/jfs/jfs_logmgr.c:1090 jfs_mount_rw+0x286/0x4b0 fs/jfs/jfs_mount.c:272 fs/jfs/jfs_mount.c:272 jfs_fill_super+0x814/0xb50 fs/jfs/super.c:598 fs/jfs/super.c:598 mount_bdev+0x2fc/0x3b0 fs/super.c:1158 fs/super.c:1158 mount_fs+0xa3/0x310 fs/super.c:1261 fs/super.c:1261 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961 fs/namespace.c:961 vfs_kern_mount fs/namespace.c:951 [inline] do_new_mount fs/namespace.c:2492 [inline] vfs_kern_mount fs/namespace.c:951 [inline] fs/namespace.c:2822 do_new_mount fs/namespace.c:2492 [inline] fs/namespace.c:2822 do_mount+0x115c/0x2f50 fs/namespace.c:2822 fs/namespace.c:2822 ksys_mount+0xcf/0x130 fs/namespace.c:3038 fs/namespace.c:3038 __do_sys_mount fs/namespace.c:3052 [inline] __se_sys_mount fs/namespace.c:3049 [inline] __do_sys_mount fs/namespace.c:3052 [inline] fs/namespace.c:3049 __se_sys_mount fs/namespace.c:3049 [inline] fs/namespace.c:3049 __x64_sys_mount+0xba/0x150 fs/namespace.c:3049 fs/namespace.c:3049 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe The buggy address belongs to the object at ffff8880a4921800 which belongs to the cache kmalloc-192 of size 192 The buggy address is located 136 bytes inside of 192-byte region [ffff8880a4921800, ffff8880a49218c0) The buggy address belongs to the page: page:ffffea0002924840 count:1 mapcount:0 mapping:ffff88813bff0040 index:0x0 flags: 0xfff00000000100(slab) raw: 00fff00000000100 ffffea00029644c8 ffffea0002924d48 ffff88813bff0040 raw: 0000000000000000 ffff8880a4921000 0000000100000010 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8880a4921780: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8880a4921800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff8880a4921880: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ^ ffff8880a4921900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8880a4921980: 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================