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================================================================== BUG: KASAN: slab-out-of-bounds in memcpy include/linux/fortify-string.h:191 [inline] BUG: KASAN: slab-out-of-bounds in page_to_skb+0x5cf/0xb70 drivers/net/virtio_net.c:480 Read of size 12 at addr ffff8880271df800 by task systemd/1 CPU: 0 PID: 1 Comm: systemd Not tainted 5.12.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x141/0x1d7 lib/dump_stack.c:120 print_address_description.constprop.0.cold+0x5b/0x2f8 mm/kasan/report.c:232 __kasan_report mm/kasan/report.c:399 [inline] kasan_report.cold+0x7c/0xd8 mm/kasan/report.c:416 check_region_inline mm/kasan/generic.c:180 [inline] kasan_check_range+0x13d/0x180 mm/kasan/generic.c:186 memcpy+0x20/0x60 mm/kasan/shadow.c:65 memcpy include/linux/fortify-string.h:191 [inline] page_to_skb+0x5cf/0xb70 drivers/net/virtio_net.c:480 receive_mergeable drivers/net/virtio_net.c:1009 [inline] receive_buf+0x2b82/0x6220 drivers/net/virtio_net.c:1119 virtnet_receive drivers/net/virtio_net.c:1411 [inline] virtnet_poll+0x568/0x10b0 drivers/net/virtio_net.c:1516 __napi_poll+0xaf/0x440 net/core/dev.c:6962 napi_poll net/core/dev.c:7029 [inline] net_rx_action+0x801/0xb40 net/core/dev.c:7116 __do_softirq+0x29b/0x9f6 kernel/softirq.c:345 invoke_softirq kernel/softirq.c:221 [inline] __irq_exit_rcu kernel/softirq.c:422 [inline] irq_exit_rcu+0x134/0x200 kernel/softirq.c:434 common_interrupt+0x51/0xd0 arch/x86/kernel/irq.c:240 asm_common_interrupt+0x1e/0x40 arch/x86/include/asm/idtentry.h:623 RIP: 0033:0x7fa93df50e70 Code: 01 0b 00 f7 82 b8 00 00 00 02 00 00 00 75 07 48 8d 05 e4 aa 0a 00 c3 0f 1f 00 48 39 d1 0f 82 f7 36 07 00 0f 1f 80 00 00 00 00 <48> 89 f8 48 01 d0 eb 1b 0f 1f 84 00 00 00 00 00 48 39 d1 0f 82 d7 RSP: 002b:00007ffc3da4c8c8 EFLAGS: 00000212 RAX: 000055b933a0db8c RBX: 000055b933a0eb80 RCX: 000055b933a0db80 RDX: 0000000000000007 RSI: 000055b9339f5a55 RDI: 000055b933a0db85 RBP: 00007ffc3da4c9c0 R08: 0000000000000003 R09: 0000000000001010 R10: 000055b9339cea40 R11: 0000000000000246 R12: 000055b933a0db80 R13: 000055b933a0db84 R14: 000055b9339f5a55 R15: 000055b9339f5a5c Allocated by task 6380: kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38 kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:427 [inline] __kasan_slab_alloc+0x75/0x90 mm/kasan/common.c:460 kasan_slab_alloc include/linux/kasan.h:223 [inline] slab_post_alloc_hook mm/slab.h:516 [inline] slab_alloc_node mm/slub.c:2907 [inline] slab_alloc mm/slub.c:2915 [inline] kmem_cache_alloc+0x155/0x370 mm/slub.c:2920 getname_flags.part.0+0x50/0x4f0 fs/namei.c:138 getname_flags fs/namei.c:2735 [inline] user_path_at_empty+0xa1/0x100 fs/namei.c:2735 user_path_at include/linux/namei.h:60 [inline] vfs_statx+0x142/0x390 fs/stat.c:195 vfs_fstatat fs/stat.c:217 [inline] vfs_lstat include/linux/fs.h:3240 [inline] __do_sys_newlstat+0x91/0x110 fs/stat.c:372 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae Freed by task 6380: kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38 kasan_set_track+0x1c/0x30 mm/kasan/common.c:46 kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:357 ____kasan_slab_free mm/kasan/common.c:360 [inline] ____kasan_slab_free mm/kasan/common.c:325 [inline] __kasan_slab_free+0xf5/0x130 mm/kasan/common.c:367 kasan_slab_free include/linux/kasan.h:199 [inline] slab_free_hook mm/slub.c:1562 [inline] slab_free_freelist_hook+0x92/0x210 mm/slub.c:1600 slab_free mm/slub.c:3161 [inline] kmem_cache_free+0x8a/0x740 mm/slub.c:3177 putname+0xe1/0x120 fs/namei.c:259 filename_lookup+0x3c3/0x570 fs/namei.c:2465 user_path_at include/linux/namei.h:60 [inline] vfs_statx+0x142/0x390 fs/stat.c:195 vfs_fstatat fs/stat.c:217 [inline] vfs_lstat include/linux/fs.h:3240 [inline] __do_sys_newlstat+0x91/0x110 fs/stat.c:372 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae The buggy address belongs to the object at ffff8880271de600 which belongs to the cache names_cache of size 4096 The buggy address is located 512 bytes to the right of 4096-byte region [ffff8880271de600, ffff8880271df600) The buggy address belongs to the page: page:ffffea00009c7600 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x271d8 head:ffffea00009c7600 order:3 compound_mapcount:0 compound_pincount:0 flags: 0xfff00000010200(slab|head) raw: 00fff00000010200 dead000000000100 dead000000000122 ffff8880109bd140 raw: 0000000000000000 0000000000070007 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8880271df700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8880271df780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff8880271df800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff8880271df880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8880271df900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2021/04/21 00:09 | net-next-old | 08322284c162 | c0ced557 | .config | console log | report | ci-upstream-net-kasan-gce | net-next boot error: KASAN: slab-out-of-bounds Read in page_to_skb | ||||
2021/04/20 23:40 | net-next-old | ff254dad0e5b | c0ced557 | .config | console log | report | ci-upstream-net-kasan-gce | net-next boot error: KASAN: slab-out-of-bounds Read in page_to_skb | ||||
2021/04/20 10:29 | net-next-old | e9377a911d77 | c0ced557 | .config | console log | report | ci-upstream-net-kasan-gce | net-next boot error: KASAN: slab-out-of-bounds Read in page_to_skb | ||||
2021/04/20 10:29 | net-next-old | e9377a911d77 | c0ced557 | .config | console log | report | ci-upstream-net-kasan-gce | net-next boot error: KASAN: slab-out-of-bounds Read in page_to_skb | ||||
2021/04/20 00:57 | net-next-old | e9377a911d77 | 4285c989 | .config | console log | report | ci-upstream-net-kasan-gce | net-next boot error: KASAN: slab-out-of-bounds Read in page_to_skb | ||||
2021/04/20 00:03 | net-next-old | c1d9e34e1128 | 4285c989 | .config | console log | report | ci-upstream-net-kasan-gce | net-next boot error: KASAN: slab-out-of-bounds Read in page_to_skb | ||||
2021/04/19 22:17 | net-next-old | 11ac4e668a44 | 4285c989 | .config | console log | report | ci-upstream-net-kasan-gce | net-next boot error: KASAN: slab-out-of-bounds Read in page_to_skb | ||||
2021/04/19 21:43 | net-next-old | 11ac4e668a44 | 50f523d7 | .config | console log | report | ci-upstream-net-kasan-gce | net-next boot error: KASAN: slab-out-of-bounds Read in page_to_skb | ||||
2021/04/19 09:52 | net-next-old | 8203c7ce4ef2 | 50f523d7 | .config | console log | report | ci-upstream-net-kasan-gce | net-next boot error: KASAN: slab-out-of-bounds Read in page_to_skb | ||||
2021/04/19 09:52 | net-next-old | 8203c7ce4ef2 | 50f523d7 | .config | console log | report | ci-upstream-net-kasan-gce | net-next boot error: KASAN: slab-out-of-bounds Read in page_to_skb | ||||
2021/04/19 09:52 | net-next-old | 8203c7ce4ef2 | 50f523d7 | .config | console log | report | ci-upstream-net-kasan-gce | net-next boot error: KASAN: slab-out-of-bounds Read in page_to_skb | ||||
2021/04/17 18:34 | net-next-old | 8203c7ce4ef2 | 7e2b734b | .config | console log | report | ci-upstream-net-kasan-gce | net-next boot error: KASAN: slab-out-of-bounds Read in page_to_skb | ||||
2021/04/17 18:34 | net-next-old | 8203c7ce4ef2 | 7e2b734b | .config | console log | report | ci-upstream-net-kasan-gce | net-next boot error: KASAN: slab-out-of-bounds Read in page_to_skb | ||||
2021/04/17 11:01 | net-next-old | 474f45936039 | 7e2b734b | .config | console log | report | ci-upstream-net-kasan-gce | net-next boot error: KASAN: slab-out-of-bounds Read in page_to_skb | ||||
2021/04/17 11:01 | net-next-old | 474f45936039 | 7e2b734b | .config | console log | report | ci-upstream-net-kasan-gce | net-next boot error: KASAN: slab-out-of-bounds Read in page_to_skb |