FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 ================================================================== BUG: KASAN: use-after-free in __list_add_valid+0x93/0xa0 lib/list_debug.c:26 CPU: 0 PID: 17084 Comm: syz-executor.5 Not tainted 4.14.307-syzkaller #0 Read of size 8 at addr ffff888098592698 by task syz-executor.0/17051 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x149 lib/fault-inject.c:149 should_failslab+0xd6/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] kmem_cache_alloc_trace+0x29a/0x3d0 mm/slab.c:3616 kmalloc include/linux/slab.h:488 [inline] ima_add_digest_entry+0x4e/0x450 security/integrity/ima/ima_queue.c:102 ima_add_template_entry+0x25c/0x4e0 security/integrity/ima/ima_queue.c:182 ima_store_template+0x17a/0x220 security/integrity/ima/ima_api.c:118 ima_store_measurement+0x189/0x420 security/integrity/ima/ima_api.c:297 process_measurement+0x8db/0xb20 security/integrity/ima/ima_main.c:272 do_last fs/namei.c:3435 [inline] path_openat+0x10ad/0x2970 fs/namei.c:3571 do_filp_open+0x179/0x3c0 fs/namei.c:3605 do_sys_open+0x296/0x410 fs/open.c:1081 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7f6d9aec30f9 RSP: 002b:00007f6d99435168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007f6d9afe2f80 RCX: 00007f6d9aec30f9 RDX: 0000000000000000 RSI: 0000000000000042 RDI: 0000000020000300 RBP: 00007f6d994351d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffd75383ccf R14: 00007f6d99435300 R15: 0000000000022000 CPU: 1 PID: 17051 Comm: syz-executor.0 Not tainted 4.14.307-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 print_address_description.cold+0x54/0x1d3 mm/kasan/report.c:251 kasan_report_error.cold+0x8a/0x191 mm/kasan/report.c:350 kasan_report mm/kasan/report.c:408 [inline] __asan_report_load8_noabort+0x68/0x70 mm/kasan/report.c:429 __list_add_valid+0x93/0xa0 lib/list_debug.c:26 __list_add include/linux/list.h:60 [inline] list_add_tail include/linux/list.h:93 [inline] cma_listen_on_all drivers/infiniband/core/cma.c:2327 [inline] rdma_listen+0x656/0x9b0 drivers/infiniband/core/cma.c:3339 ima: OUT OF MEMORY ERROR creating queue entry ucma_listen+0x10b/0x170 drivers/infiniband/core/ucma.c:1078 audit: type=1804 audit(1678083942.385:4276): pid=17084 uid=0 auid=4294967295 ses=4294967295 op="add_template_measure" cause="ENOMEM" comm="syz-executor.5" name="/root/syzkaller-testdir3155384001/syzkaller.FrL2nU/9315/file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" dev="sda1" ino=13996 res=0 ucma_write+0x206/0x2c0 drivers/infiniband/core/ucma.c:1672 __vfs_write+0xe4/0x630 fs/read_write.c:480 vfs_write+0x17f/0x4d0 fs/read_write.c:544 SYSC_write fs/read_write.c:590 [inline] SyS_write+0xf2/0x210 fs/read_write.c:582 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7f6cd3f4d0f9 RSP: 002b:00007f6cd24bf168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f6cd406cf80 RCX: 00007f6cd3f4d0f9 RDX: 0000000000000010 RSI: 0000000020000100 RDI: 0000000000000003 RBP: 00007f6cd3fa8ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff18c15f3f R14: 00007f6cd24bf300 R15: 0000000000022000 Allocated by task 17031: save_stack mm/kasan/kasan.c:447 [inline] set_track mm/kasan/kasan.c:459 [inline] kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:551 kmem_cache_alloc_trace+0x131/0x3d0 mm/slab.c:3618 kmalloc include/linux/slab.h:488 [inline] kzalloc include/linux/slab.h:661 [inline] rdma_create_id+0x57/0x4c0 drivers/infiniband/core/cma.c:790 ucma_create_id+0x18b/0x500 drivers/infiniband/core/ucma.c:484 ucma_write+0x206/0x2c0 drivers/infiniband/core/ucma.c:1672 __vfs_write+0xe4/0x630 fs/read_write.c:480 vfs_write+0x17f/0x4d0 fs/read_write.c:544 SYSC_write fs/read_write.c:590 [inline] SyS_write+0xf2/0x210 fs/read_write.c:582 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 Freed by task 17018: save_stack mm/kasan/kasan.c:447 [inline] set_track mm/kasan/kasan.c:459 [inline] kasan_slab_free+0xc3/0x1a0 mm/kasan/kasan.c:524 __cache_free mm/slab.c:3496 [inline] kfree+0xc9/0x250 mm/slab.c:3815 ucma_close+0x11a/0x340 drivers/infiniband/core/ucma.c:1753 __fput+0x25f/0x7a0 fs/file_table.c:210 task_work_run+0x11f/0x190 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x1ad/0x200 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 The buggy address belongs to the object at ffff8880985924c0 which belongs to the cache kmalloc-1024 of size 1024 The buggy address is located 472 bytes inside of 1024-byte region [ffff8880985924c0, ffff8880985928c0) The buggy address belongs to the page: page:ffffea0002616480 count:1 mapcount:0 mapping:ffff888098592040 index:0x0 compound_mapcount: 0 flags: 0xfff00000008100(slab|head) raw: 00fff00000008100 ffff888098592040 0000000000000000 0000000100000007 raw: ffffea000296aaa0 ffffea00024642a0 ffff88813fe74ac0 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff888098592580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888098592600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888098592680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888098592700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888098592780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================