=continue" or missing value gfs2: not a GFS2 filesystem FAULT_FLAG_ALLOW_RETRY missing 70 ================================================================== CPU: 1 PID: 2163 Comm: syz-executor.1 Not tainted 5.0.0-rc6 #67 BUG: KASAN: use-after-free in __list_del_entry_valid+0xe6/0xf5 lib/list_debug.c:51 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Read of size 8 at addr ffff888094bf06a0 by task syz-executor.4/2161 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 handle_userfault.cold+0x41/0x5d fs/userfaultfd.c:431 do_anonymous_page mm/memory.c:2921 [inline] handle_pte_fault mm/memory.c:3785 [inline] __handle_mm_fault+0x36c8/0x3f20 mm/memory.c:3911 handle_mm_fault+0x43f/0xb30 mm/memory.c:3948 do_user_addr_fault arch/x86/mm/fault.c:1475 [inline] __do_page_fault+0x5da/0xd60 arch/x86/mm/fault.c:1541 do_page_fault+0x71/0x581 arch/x86/mm/fault.c:1572 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1143 RIP: 0033:0x451880 Code: 0f 84 c4 0f 00 00 48 89 f1 48 89 f8 48 83 e1 3f 48 83 f9 20 0f 86 7b 02 00 00 48 83 e6 f0 48 83 e1 0f 66 0f ef c0 66 0f ef c9 <66> 0f 74 0e 66 0f d7 d1 48 d3 ea 49 c7 c2 11 00 00 00 49 29 ca 4d RSP: 002b:00007f04692d67a8 EFLAGS: 00010202 RAX: 00007f04692d6850 RBX: 0000000000000003 RCX: 000000000000000e RDX: 00000000000003ff RSI: 0000000020012fe0 RDI: 00007f04692d6850 RBP: 000000000073bf00 R08: 00000000000003ff R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f04692d76d4 R13: 00000000004c68be R14: 00000000004dbdb8 R15: 00000000ffffffff CPU: 0 PID: 2161 Comm: syz-executor.4 Not tainted 5.0.0-rc6 #67 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:135 __list_del_entry_valid+0xe6/0xf5 lib/list_debug.c:51 __list_del_entry include/linux/list.h:117 [inline] list_del include/linux/list.h:125 [inline] cma_cancel_listens drivers/infiniband/core/cma.c:1722 [inline] cma_cancel_operation drivers/infiniband/core/cma.c:1750 [inline] cma_cancel_operation+0x2d7/0xa10 drivers/infiniband/core/cma.c:1738 rdma_destroy_id+0x8d/0xab0 drivers/infiniband/core/cma.c:1814 ucma_close+0x115/0x320 drivers/infiniband/core/ucma.c:1770 __fput+0x2df/0x8d0 fs/file_table.c:278 ____fput+0x16/0x20 fs/file_table.c:309 task_work_run+0x14a/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x273/0x2c0 arch/x86/entry/common.c:166 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x52d/0x610 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x411d41 Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 94 19 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007ffe1b30ea30 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000411d41 RDX: 0000000000000000 RSI: 0000000000743940 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000743938 R09: 00000000001a57ae R10: 00007ffe1b30e950 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 00000000000008ed R15: 0000000000000004 Allocated by task 2162: save_stack+0x45/0xd0 mm/kasan/common.c:73 set_track mm/kasan/common.c:85 [inline] __kasan_kmalloc mm/kasan/common.c:496 [inline] __kasan_kmalloc.constprop.0+0xcf/0xe0 mm/kasan/common.c:469 kasan_kmalloc+0x9/0x10 mm/kasan/common.c:504 kmem_cache_alloc_trace+0x151/0x760 mm/slab.c:3609 kmalloc include/linux/slab.h:545 [inline] kzalloc include/linux/slab.h:740 [inline] __rdma_create_id+0x5f/0x4e0 drivers/infiniband/core/cma.c:879 ucma_create_id+0x1de/0x640 drivers/infiniband/core/ucma.c:506 ucma_write+0x2da/0x3c0 drivers/infiniband/core/ucma.c:1689 __vfs_write+0x116/0x8e0 fs/read_write.c:485 vfs_write+0x20c/0x580 fs/read_write.c:549 ksys_write+0xea/0x1f0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x73/0xb0 fs/read_write.c:607 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 2161: save_stack+0x45/0xd0 mm/kasan/common.c:73 set_track mm/kasan/common.c:85 [inline] __kasan_slab_free+0x102/0x150 mm/kasan/common.c:458 kasan_slab_free+0xe/0x10 mm/kasan/common.c:466 __cache_free mm/slab.c:3487 [inline] kfree+0xcf/0x230 mm/slab.c:3806 rdma_destroy_id+0x723/0xab0 drivers/infiniband/core/cma.c:1849 ucma_close+0x115/0x320 drivers/infiniband/core/ucma.c:1770 __fput+0x2df/0x8d0 fs/file_table.c:278 ____fput+0x16/0x20 fs/file_table.c:309 task_work_run+0x14a/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x273/0x2c0 arch/x86/entry/common.c:166 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x52d/0x610 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe The buggy address belongs to the object at ffff888094bf04c0 which belongs to the cache kmalloc-2k of size 2048 The buggy address is located 480 bytes inside of 2048-byte region [ffff888094bf04c0, ffff888094bf0cc0) The buggy address belongs to the page: page:ffffea000252fc00 count:1 mapcount:0 mapping:ffff88812c3f0c40 index:0x0 compound_mapcount: 0 flags: 0x1fffc0000010200(slab|head) raw: 01fffc0000010200 ffffea000171e688 ffffea0001682308 ffff88812c3f0c40 raw: 0000000000000000 ffff888094bf04c0 0000000100000003 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff888094bf0580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888094bf0600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888094bf0680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888094bf0700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888094bf0780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================