Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
---|---|---|---|---|---|---|---|---|---|
linux-4.14 | KASAN: use-after-free Read in padata_do_parallel | 1 | 1426d | 1426d | 0/1 | auto-closed as invalid on 2021/04/06 00:49 |
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audit: type=1804 audit(1617795770.078:24): pid=16382 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.2" name="/root/syzkaller-testdir774286796/syzkaller.4FnC2z/210/bus" dev="sda1" ino=14575 res=1 ================================================================== BUG: KASAN: use-after-free in __list_add_valid+0x93/0xa0 lib/list_debug.c:26 Read of size 8 at addr ffff8880b51d95d0 by task kworker/1:3/8409 CPU: 1 PID: 8409 Comm: kworker/1:3 Not tainted 4.14.229-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: pencrypt padata_parallel_worker 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:252 kasan_report_error.cold+0x8a/0x191 mm/kasan/report.c:351 kasan_report mm/kasan/report.c:409 [inline] __asan_report_load8_noabort+0x68/0x70 mm/kasan/report.c:430 __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] padata_do_parallel+0x304/0x5d0 kernel/padata.c:140 pcrypt_aead_encrypt+0x356/0x440 crypto/pcrypt.c:172 crypto_aead_encrypt include/crypto/aead.h:330 [inline] pcrypt_aead_enc+0x77/0xf0 crypto/pcrypt.c:142 padata_parallel_worker+0x202/0x2e0 kernel/padata.c:87 process_one_work+0x793/0x14a0 kernel/workqueue.c:2116 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2250 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Allocated by task 16382: 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 __do_kmalloc mm/slab.c:3720 [inline] __kmalloc+0x15a/0x400 mm/slab.c:3729 kmalloc include/linux/slab.h:493 [inline] kzalloc include/linux/slab.h:661 [inline] tls_push_record+0xfa/0x1270 net/tls/tls_sw.c:250 tls_sw_sendpage+0x760/0xb50 net/tls/tls_sw.c:617 inet_sendpage+0x155/0x590 net/ipv4/af_inet.c:779 kernel_sendpage net/socket.c:3407 [inline] sock_sendpage+0xdf/0x140 net/socket.c:871 pipe_to_sendpage+0x226/0x2d0 fs/splice.c:451 splice_from_pipe_feed fs/splice.c:502 [inline] __splice_from_pipe+0x326/0x7a0 fs/splice.c:626 splice_from_pipe fs/splice.c:661 [inline] generic_splice_sendpage+0xc1/0x110 fs/splice.c:832 do_splice_from fs/splice.c:851 [inline] direct_splice_actor+0x115/0x160 fs/splice.c:1018 splice_direct_to_actor+0x27c/0x730 fs/splice.c:973 do_splice_direct+0x164/0x210 fs/splice.c:1061 do_sendfile+0x47f/0xb30 fs/read_write.c:1441 SYSC_sendfile64 fs/read_write.c:1502 [inline] SyS_sendfile64+0xff/0x110 fs/read_write.c:1488 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb Freed by task 16382: 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 tls_push_record+0xc3b/0x1270 net/tls/tls_sw.c:293 tls_sw_sendpage+0x760/0xb50 net/tls/tls_sw.c:617 inet_sendpage+0x155/0x590 net/ipv4/af_inet.c:779 kernel_sendpage net/socket.c:3407 [inline] sock_sendpage+0xdf/0x140 net/socket.c:871 pipe_to_sendpage+0x226/0x2d0 fs/splice.c:451 splice_from_pipe_feed fs/splice.c:502 [inline] __splice_from_pipe+0x326/0x7a0 fs/splice.c:626 splice_from_pipe fs/splice.c:661 [inline] generic_splice_sendpage+0xc1/0x110 fs/splice.c:832 do_splice_from fs/splice.c:851 [inline] direct_splice_actor+0x115/0x160 fs/splice.c:1018 splice_direct_to_actor+0x27c/0x730 fs/splice.c:973 do_splice_direct+0x164/0x210 fs/splice.c:1061 do_sendfile+0x47f/0xb30 fs/read_write.c:1441 SYSC_sendfile64 fs/read_write.c:1502 [inline] SyS_sendfile64+0xff/0x110 fs/read_write.c:1488 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb The buggy address belongs to the object at ffff8880b51d9580 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 80 bytes inside of 512-byte region [ffff8880b51d9580, ffff8880b51d9780) The buggy address belongs to the page: page:ffffea0002d47640 count:1 mapcount:0 mapping:ffff8880b51d9080 index:0x0 flags: 0xfff00000000100(slab) raw: 00fff00000000100 ffff8880b51d9080 0000000000000000 0000000100000006 raw: ffffea00025bb2a0 ffffea00029552a0 ffff88813fe80940 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8880b51d9480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8880b51d9500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff8880b51d9580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8880b51d9600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8880b51d9680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2021/04/07 11:43 | linux-4.14.y | 0cc244011f40 | 6a81331a | .config | console log | report | info | ci2-linux-4-14 | KASAN: use-after-free Read in padata_do_parallel |