syzbot


kernel BUG at mm/slab.c:LINE!

Status: fixed on 2017/10/24 06:54
Fix commit: 96e5ae4e76f1 bpf: fix numa_node validation
First crash: 2367d, last: 2363d
Similar bugs (4)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream kernel BUG at mm/slab.c:LINE! (4) fs 12 1729d 1797d 12/26 fixed on 2019/06/14 18:22
upstream kernel BUG at mm/slab.c:LINE! (3) mm C done 14 1802d 1930d 11/26 fixed on 2019/03/21 17:09
upstream kernel BUG at mm/slab.c:LINE! (2) hardening mm C 701 2043d 2058d 8/26 fixed on 2018/08/07 13:43
linux-4.14 kernel BUG at mm/slab.c:LINE! C inconclusive 23 1040d 1666d 0/1 upstream: reported C repro on 2019/08/04 15:26

Sample crash report:
kernel BUG at mm/slab.c:3256!
invalid opcode: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 2949 Comm: syzkaller050748 Not tainted 4.13.0-rc7+ #36
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801d2cb4380 task.stack: ffff8801d2548000
RIP: 0010:____cache_alloc_node+0x1d4/0x1e0 mm/slab.c:3292
RSP: 0018:ffff8801d254f538 EFLAGS: 00010092
RAX: fffffffffffffe00 RBX: 00000000014012c0 RCX: 0000000000000000
RDX: 00000000fffffe00 RSI: 00000000014012c0 RDI: ffff8801dac004c0
RBP: ffff8801d254f5c0 R08: 0000000000400000 R09: 00000000014092c0
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801dac004c0
R13: ffff8801dac004c0 R14: 0000000000000000 R15: 00000000fffffe00
FS:  00000000009be880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020ff2fe4 CR3: 00000001d3afa000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 kmalloc_node include/linux/slab.h:531 [inline]
 alloc_vmap_area+0x11c/0x8c0 mm/vmalloc.c:421
 __get_vm_area_node+0xe8/0x340 mm/vmalloc.c:1411
 __vmalloc_node_range+0xa3/0x730 mm/vmalloc.c:1762
 __vmalloc_node mm/vmalloc.c:1812 [inline]
 __vmalloc_node_flags_caller+0x50/0x60 mm/vmalloc.c:1834
 bpf_map_area_alloc+0x62/0x80 kernel/bpf/syscall.c:123
 sock_map_alloc+0x4d2/0x610 kernel/bpf/sockmap.c:523
 find_and_alloc_map kernel/bpf/syscall.c:100 [inline]
 map_create kernel/bpf/syscall.c:330 [inline]
 SYSC_bpf kernel/bpf/syscall.c:1462 [inline]
 SyS_bpf+0xc56/0x4c40 kernel/bpf/syscall.c:1443
 entry_SYSCALL_64_fastpath+0x1f/0xbe
RIP: 0033:0x43fcd9
RSP: 002b:00007fff87df72a8 EFLAGS: 00000217 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcd9
RDX: 000000000000001c RSI: 0000000020ff2fe4 RDI: 0000000000000000
RBP: 0000000000000086 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000217 R12: 0000000000401640
R13: 00000000004016d0 R14: 0000000000000000 R15: 0000000000000000
Code: 83 c2 01 89 50 18 4c 03 70 08 e8 38 f4 ff ff 4d 85 f6 0f 85 3e ff ff ff 44 89 fe 4c 89 ef e8 94 fb ff ff 49 89 c6 e9 2b ff ff ff <0f> 0b 0f 0b 0f 0b 66 0f 1f 44 00 00 55 48 89 e5 41 57 41 56 41 
RIP: ____cache_alloc_node+0x1d4/0x1e0 mm/slab.c:3292 RSP: ffff8801d254f538
---[ end trace 18ac8f0584eb2092 ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (860):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2017/09/04 03:51 net-next-old 942e7e5fc1ea a54dce00 .config console log report syz C ci-upstream-net-kasan-gce
2017/09/03 04:27 net-next-old 32d9b70a053a a54dce00 .config console log report syz C ci-upstream-net-kasan-gce
2017/09/04 04:04 linux-next 1d53d908b79d a54dce00 .config console log report syz C ci-upstream-next-kasan-gce
2017/09/03 05:17 linux-next 1d53d908b79d a54dce00 .config console log report syz C ci-upstream-next-kasan-gce
2017/09/03 04:03 linux-next 1d53d908b79d a54dce00 .config console log report syz ci-upstream-next-kasan-gce
2017/09/05 18:12 net-next-old 2ff81cd35f9e c34180fc .config console log report ci-upstream-net-kasan-gce
2017/09/05 16:49 net-next-old 2ff81cd35f9e c34180fc .config console log report ci-upstream-net-kasan-gce
2017/09/05 11:32 net-next-old 2ff81cd35f9e c34180fc .config console log report ci-upstream-net-kasan-gce
2017/09/05 10:36 net-next-old 2ff81cd35f9e c34180fc .config console log report ci-upstream-net-kasan-gce
2017/09/05 08:57 net-next-old 2ff81cd35f9e c34180fc .config console log report ci-upstream-net-kasan-gce
2017/09/05 05:52 net-next-old 45865dabb14c f400a0da .config console log report ci-upstream-net-kasan-gce
2017/09/05 05:14 net-next-old 45865dabb14c f400a0da .config console log report ci-upstream-net-kasan-gce
2017/09/05 04:18 net-next-old 45865dabb14c f400a0da .config console log report ci-upstream-net-kasan-gce
2017/09/05 03:32 net-next-old 45865dabb14c f400a0da .config console log report ci-upstream-net-kasan-gce
2017/09/05 03:29 net-next-old 45865dabb14c f400a0da .config console log report ci-upstream-net-kasan-gce
2017/09/05 02:07 net-next-old 45865dabb14c f400a0da .config console log report ci-upstream-net-kasan-gce
2017/09/05 01:57 net-next-old 45865dabb14c f400a0da .config console log report ci-upstream-net-kasan-gce
2017/09/04 22:58 net-next-old 45865dabb14c f400a0da .config console log report ci-upstream-net-kasan-gce
2017/09/04 21:11 net-next-old 3cf2e08f5ace f400a0da .config console log report ci-upstream-net-kasan-gce
2017/09/04 19:45 net-next-old 3cf2e08f5ace f400a0da .config console log report ci-upstream-net-kasan-gce
2017/09/04 16:17 net-next-old 3cf2e08f5ace f400a0da .config console log report ci-upstream-net-kasan-gce
2017/09/04 15:18 net-next-old 3cf2e08f5ace f400a0da .config console log report ci-upstream-net-kasan-gce
2017/09/06 04:52 mmots c97efd59aceb 0ed1da4a .config console log report ci-upstream-mmots-kasan-gce
2017/09/05 16:25 linux-next 744c56def809 0ed1da4a .config console log report skylake-linux-next-kasan-qemu
2017/09/05 08:30 linux-next 744c56def809 0ed1da4a .config console log report skylake-linux-next-kasan-qemu
* Struck through repros no longer work on HEAD.