KASAN: slab-out-of-bounds Read in _decode_session6 (2)
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syzbot
Apr 19, 2022, 10:56:23 PM4/19/22
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 74766a973637 Linux 4.14.275
git tree: linux-4.14.y
console output: https://syzkaller.appspot.com/x/log.txt?x=1165aa34f00000
kernel config: https://syzkaller.appspot.com/x/.config?x=78767ee43940f0a8
dashboard link: https://syzkaller.appspot.com/bug?extid=d7e50328552362322eec
compiler: gcc version 10.2.1 20210110 (Debian 10.2.1-6)
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+d7e503...@syzkaller.appspotmail.com
==================================================================
BUG: KASAN: slab-out-of-bounds in _decode_session6+0xe6c/0x12f0 net/ipv6/xfrm6_policy.c:136
Read of size 1 at addr ffff88809f144a90 by task syz-executor.4/11021
CPU: 1 PID: 11021 Comm: syz-executor.4 Not tainted 4.14.275-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<IRQ>
__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_load1_noabort+0x68/0x70 mm/kasan/report.c:427
_decode_session6+0xe6c/0x12f0 net/ipv6/xfrm6_policy.c:136
__xfrm_decode_session+0x5a/0x110 net/xfrm/xfrm_policy.c:2242
xfrm_decode_session include/net/xfrm.h:1174 [inline]
vti6_tnl_xmit+0x2f3/0x17d0 net/ipv6/ip6_vti.c:577
__netdev_start_xmit include/linux/netdevice.h:4052 [inline]
netdev_start_xmit include/linux/netdevice.h:4061 [inline]
xmit_one net/core/dev.c:3005 [inline]
dev_hard_start_xmit+0x188/0x890 net/core/dev.c:3021
sch_direct_xmit+0x251/0x500 net/sched/sch_generic.c:186
qdisc_restart net/sched/sch_generic.c:249 [inline]
__qdisc_run+0x25d/0xe00 net/sched/sch_generic.c:257
__dev_xmit_skb net/core/dev.c:3231 [inline]
__dev_queue_xmit+0x13ac/0x2480 net/core/dev.c:3489
neigh_output include/net/neighbour.h:500 [inline]
ip6_finish_output2+0xf48/0x1f10 net/ipv6/ip6_output.c:120
ip6_finish_output+0x5c6/0xd50 net/ipv6/ip6_output.c:192
NF_HOOK_COND include/linux/netfilter.h:239 [inline]
ip6_output+0x1c5/0x660 net/ipv6/ip6_output.c:209
dst_output include/net/dst.h:470 [inline]
NF_HOOK include/linux/netfilter.h:250 [inline]
ndisc_send_skb+0x82a/0x1390 net/ipv6/ndisc.c:483
ndisc_send_rs+0x125/0x630 net/ipv6/ndisc.c:677
addrconf_rs_timer+0x2bb/0x5a0 net/ipv6/addrconf.c:3769
call_timer_fn+0x14a/0x650 kernel/time/timer.c:1280
expire_timers+0x232/0x4d0 kernel/time/timer.c:1319
__run_timers kernel/time/timer.c:1637 [inline]
run_timer_softirq+0x1d5/0x5a0 kernel/time/timer.c:1650
__do_softirq+0x24d/0x9ff kernel/softirq.c:288
invoke_softirq kernel/softirq.c:368 [inline]
irq_exit+0x193/0x240 kernel/softirq.c:409
exiting_irq arch/x86/include/asm/apic.h:638 [inline]
smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1106
apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793
</IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline]
RIP: 0010:seqcount_lockdep_reader_access include/linux/seqlock.h:83 [inline]
RIP: 0010:read_seqcount_begin include/linux/seqlock.h:164 [inline]
RIP: 0010:read_seqbegin include/linux/seqlock.h:441 [inline]
RIP: 0010:zone_span_seqbegin include/linux/memory_hotplug.h:80 [inline]
RIP: 0010:page_outside_zone_boundaries+0x1ff/0x310 mm/page_alloc.c:496
RSP: 0018:ffff8880a040f200 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10
RAX: 1ffffffff11e1309 RBX: ffff88813fffb6c0 RCX: 1ffff110142d25e5
RDX: 0000000000000000 RSI: ffff8880a1692f08 RDI: 0000000000000286
RBP: dffffc0000000000 R08: ffffffff8b9c6138 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: fffffbfff11e1308 R14: 1ffffffff11e130a R15: 0000000000000286
bad_range mm/page_alloc.c:525 [inline]
rmqueue mm/page_alloc.c:2857 [inline]
get_page_from_freelist+0xaf6/0x2560 mm/page_alloc.c:3173
__alloc_pages_nodemask+0x365/0x2720 mm/page_alloc.c:4185
alloc_pages_current+0x155/0x260 mm/mempolicy.c:2113
alloc_pages include/linux/gfp.h:520 [inline]
__page_cache_alloc mm/filemap.c:871 [inline]
pagecache_get_page+0x3f5/0xab0 mm/filemap.c:1501
find_or_create_page include/linux/pagemap.h:326 [inline]
grow_dev_page fs/buffer.c:1004 [inline]
grow_buffers fs/buffer.c:1077 [inline]
__getblk_slow+0x1dd/0x7a0 fs/buffer.c:1104
__getblk_gfp+0x6b/0x70 fs/buffer.c:1383
__getblk include/linux/buffer_head.h:388 [inline]
reiserfs_breada+0x120/0x330 fs/reiserfs/journal.c:2345
journal_read fs/reiserfs/journal.c:2455 [inline]
journal_init+0x2166/0x5d80 fs/reiserfs/journal.c:2904
reiserfs_fill_super+0xa08/0x2980 fs/reiserfs/super.c:2035
mount_bdev+0x2b3/0x360 fs/super.c:1134
mount_fs+0x92/0x2a0 fs/super.c:1237
vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046
vfs_kern_mount fs/namespace.c:1036 [inline]
do_new_mount fs/namespace.c:2572 [inline]
do_mount+0xe65/0x2a10 fs/namespace.c:2902
SYSC_mount fs/namespace.c:3118 [inline]
SyS_mount+0xa8/0x120 fs/namespace.c:3095
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7f2b01d1461a
RSP: 002b:00007f2b00687f88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f2b01d1461a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f2b00687fe0
RBP: 00007f2b00688020 R08: 00007f2b00688020 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000
R13: 0000000020000100 R14: 00007f2b00687fe0 R15: 0000000020011500
Allocated by task 10563:
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+0x124/0x3c0 mm/slab.c:3552
mempool_alloc+0x10e/0x2d0 mm/mempool.c:330
bvec_alloc+0xcc/0x2d0 block/bio.c:216
bio_alloc_bioset+0x585/0x830 block/bio.c:506
bio_alloc include/linux/bio.h:422 [inline]
dio_bio_alloc fs/direct-io.c:439 [inline]
dio_new_bio fs/direct-io.c:745 [inline]
dio_send_cur_page fs/direct-io.c:827 [inline]
submit_page_section fs/direct-io.c:884 [inline]
do_direct_IO fs/direct-io.c:1098 [inline]
do_blockdev_direct_IO fs/direct-io.c:1337 [inline]
__blockdev_direct_IO+0x10a1/0xdcb0 fs/direct-io.c:1423
ext4_direct_IO_write fs/ext4/inode.c:3724 [inline]
ext4_direct_IO+0x888/0x1b80 fs/ext4/inode.c:3865
generic_file_direct_write+0x1df/0x420 mm/filemap.c:2958
__generic_file_write_iter+0x2a2/0x590 mm/filemap.c:3137
ext4_file_write_iter+0x276/0xd20 fs/ext4/file.c:270
call_write_iter include/linux/fs.h:1780 [inline]
new_sync_write fs/read_write.c:469 [inline]
__vfs_write+0x44c/0x630 fs/read_write.c:482
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+0x46/0xbb
Freed by task 10563:
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]
kmem_cache_free+0x7c/0x2b0 mm/slab.c:3758
mempool_free+0xcf/0x1d0 mm/mempool.c:439
bvec_free+0x7d/0xa0 block/bio.c:171
bio_free+0xd1/0x1a0 block/bio.c:257
bio_put+0x59/0x70 block/bio.c:558
dio_bio_complete+0x32e/0x5d0 fs/direct-io.c:563
dio_await_completion fs/direct-io.c:581 [inline]
do_blockdev_direct_IO fs/direct-io.c:1394 [inline]
__blockdev_direct_IO+0x7a20/0xdcb0 fs/direct-io.c:1423
ext4_direct_IO_write fs/ext4/inode.c:3724 [inline]
ext4_direct_IO+0x888/0x1b80 fs/ext4/inode.c:3865
generic_file_direct_write+0x1df/0x420 mm/filemap.c:2958
__generic_file_write_iter+0x2a2/0x590 mm/filemap.c:3137
ext4_file_write_iter+0x276/0xd20 fs/ext4/file.c:270
call_write_iter include/linux/fs.h:1780 [inline]
new_sync_write fs/read_write.c:469 [inline]
__vfs_write+0x44c/0x630 fs/read_write.c:482
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+0x46/0xbb
The buggy address belongs to the object at ffff88809f145a40
which belongs to the cache biovec-max of size 8192
The buggy address is located 4016 bytes to the left of
8192-byte region [ffff88809f145a40, ffff88809f147a40)
The buggy address belongs to the page:
page:ffffea00027c5100 count:1 mapcount:0 mapping:ffff88809f145a40 index:0x0 compound_mapcount: 0
flags: 0xfff00000008100(slab|head)
raw: 00fff00000008100 ffff88809f145a40 0000000000000000 0000000100000001
raw: ffffea0002a22620 ffffea00027c0820 ffff88823b3f7000 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff88809f144980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff88809f144a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88809f144a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
^
ffff88809f144b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff88809f144b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following issue on:
HEAD commit: 74766a973637 Linux 4.14.275
git tree: linux-4.14.y
console output: https://syzkaller.appspot.com/x/log.txt?x=1165aa34f00000
kernel config: https://syzkaller.appspot.com/x/.config?x=78767ee43940f0a8
dashboard link: https://syzkaller.appspot.com/bug?extid=d7e50328552362322eec
compiler: gcc version 10.2.1 20210110 (Debian 10.2.1-6)
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+d7e503...@syzkaller.appspotmail.com
==================================================================
BUG: KASAN: slab-out-of-bounds in _decode_session6+0xe6c/0x12f0 net/ipv6/xfrm6_policy.c:136
Read of size 1 at addr ffff88809f144a90 by task syz-executor.4/11021
CPU: 1 PID: 11021 Comm: syz-executor.4 Not tainted 4.14.275-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<IRQ>
__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_load1_noabort+0x68/0x70 mm/kasan/report.c:427
_decode_session6+0xe6c/0x12f0 net/ipv6/xfrm6_policy.c:136
__xfrm_decode_session+0x5a/0x110 net/xfrm/xfrm_policy.c:2242
xfrm_decode_session include/net/xfrm.h:1174 [inline]
vti6_tnl_xmit+0x2f3/0x17d0 net/ipv6/ip6_vti.c:577
__netdev_start_xmit include/linux/netdevice.h:4052 [inline]
netdev_start_xmit include/linux/netdevice.h:4061 [inline]
xmit_one net/core/dev.c:3005 [inline]
dev_hard_start_xmit+0x188/0x890 net/core/dev.c:3021
sch_direct_xmit+0x251/0x500 net/sched/sch_generic.c:186
qdisc_restart net/sched/sch_generic.c:249 [inline]
__qdisc_run+0x25d/0xe00 net/sched/sch_generic.c:257
__dev_xmit_skb net/core/dev.c:3231 [inline]
__dev_queue_xmit+0x13ac/0x2480 net/core/dev.c:3489
neigh_output include/net/neighbour.h:500 [inline]
ip6_finish_output2+0xf48/0x1f10 net/ipv6/ip6_output.c:120
ip6_finish_output+0x5c6/0xd50 net/ipv6/ip6_output.c:192
NF_HOOK_COND include/linux/netfilter.h:239 [inline]
ip6_output+0x1c5/0x660 net/ipv6/ip6_output.c:209
dst_output include/net/dst.h:470 [inline]
NF_HOOK include/linux/netfilter.h:250 [inline]
ndisc_send_skb+0x82a/0x1390 net/ipv6/ndisc.c:483
ndisc_send_rs+0x125/0x630 net/ipv6/ndisc.c:677
addrconf_rs_timer+0x2bb/0x5a0 net/ipv6/addrconf.c:3769
call_timer_fn+0x14a/0x650 kernel/time/timer.c:1280
expire_timers+0x232/0x4d0 kernel/time/timer.c:1319
__run_timers kernel/time/timer.c:1637 [inline]
run_timer_softirq+0x1d5/0x5a0 kernel/time/timer.c:1650
__do_softirq+0x24d/0x9ff kernel/softirq.c:288
invoke_softirq kernel/softirq.c:368 [inline]
irq_exit+0x193/0x240 kernel/softirq.c:409
exiting_irq arch/x86/include/asm/apic.h:638 [inline]
smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1106
apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793
</IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline]
RIP: 0010:seqcount_lockdep_reader_access include/linux/seqlock.h:83 [inline]
RIP: 0010:read_seqcount_begin include/linux/seqlock.h:164 [inline]
RIP: 0010:read_seqbegin include/linux/seqlock.h:441 [inline]
RIP: 0010:zone_span_seqbegin include/linux/memory_hotplug.h:80 [inline]
RIP: 0010:page_outside_zone_boundaries+0x1ff/0x310 mm/page_alloc.c:496
RSP: 0018:ffff8880a040f200 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10
RAX: 1ffffffff11e1309 RBX: ffff88813fffb6c0 RCX: 1ffff110142d25e5
RDX: 0000000000000000 RSI: ffff8880a1692f08 RDI: 0000000000000286
RBP: dffffc0000000000 R08: ffffffff8b9c6138 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: fffffbfff11e1308 R14: 1ffffffff11e130a R15: 0000000000000286
bad_range mm/page_alloc.c:525 [inline]
rmqueue mm/page_alloc.c:2857 [inline]
get_page_from_freelist+0xaf6/0x2560 mm/page_alloc.c:3173
__alloc_pages_nodemask+0x365/0x2720 mm/page_alloc.c:4185
alloc_pages_current+0x155/0x260 mm/mempolicy.c:2113
alloc_pages include/linux/gfp.h:520 [inline]
__page_cache_alloc mm/filemap.c:871 [inline]
pagecache_get_page+0x3f5/0xab0 mm/filemap.c:1501
find_or_create_page include/linux/pagemap.h:326 [inline]
grow_dev_page fs/buffer.c:1004 [inline]
grow_buffers fs/buffer.c:1077 [inline]
__getblk_slow+0x1dd/0x7a0 fs/buffer.c:1104
__getblk_gfp+0x6b/0x70 fs/buffer.c:1383
__getblk include/linux/buffer_head.h:388 [inline]
reiserfs_breada+0x120/0x330 fs/reiserfs/journal.c:2345
journal_read fs/reiserfs/journal.c:2455 [inline]
journal_init+0x2166/0x5d80 fs/reiserfs/journal.c:2904
reiserfs_fill_super+0xa08/0x2980 fs/reiserfs/super.c:2035
mount_bdev+0x2b3/0x360 fs/super.c:1134
mount_fs+0x92/0x2a0 fs/super.c:1237
vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046
vfs_kern_mount fs/namespace.c:1036 [inline]
do_new_mount fs/namespace.c:2572 [inline]
do_mount+0xe65/0x2a10 fs/namespace.c:2902
SYSC_mount fs/namespace.c:3118 [inline]
SyS_mount+0xa8/0x120 fs/namespace.c:3095
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7f2b01d1461a
RSP: 002b:00007f2b00687f88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f2b01d1461a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f2b00687fe0
RBP: 00007f2b00688020 R08: 00007f2b00688020 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000
R13: 0000000020000100 R14: 00007f2b00687fe0 R15: 0000000020011500
Allocated by task 10563:
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+0x124/0x3c0 mm/slab.c:3552
mempool_alloc+0x10e/0x2d0 mm/mempool.c:330
bvec_alloc+0xcc/0x2d0 block/bio.c:216
bio_alloc_bioset+0x585/0x830 block/bio.c:506
bio_alloc include/linux/bio.h:422 [inline]
dio_bio_alloc fs/direct-io.c:439 [inline]
dio_new_bio fs/direct-io.c:745 [inline]
dio_send_cur_page fs/direct-io.c:827 [inline]
submit_page_section fs/direct-io.c:884 [inline]
do_direct_IO fs/direct-io.c:1098 [inline]
do_blockdev_direct_IO fs/direct-io.c:1337 [inline]
__blockdev_direct_IO+0x10a1/0xdcb0 fs/direct-io.c:1423
ext4_direct_IO_write fs/ext4/inode.c:3724 [inline]
ext4_direct_IO+0x888/0x1b80 fs/ext4/inode.c:3865
generic_file_direct_write+0x1df/0x420 mm/filemap.c:2958
__generic_file_write_iter+0x2a2/0x590 mm/filemap.c:3137
ext4_file_write_iter+0x276/0xd20 fs/ext4/file.c:270
call_write_iter include/linux/fs.h:1780 [inline]
new_sync_write fs/read_write.c:469 [inline]
__vfs_write+0x44c/0x630 fs/read_write.c:482
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+0x46/0xbb
Freed by task 10563:
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]
kmem_cache_free+0x7c/0x2b0 mm/slab.c:3758
mempool_free+0xcf/0x1d0 mm/mempool.c:439
bvec_free+0x7d/0xa0 block/bio.c:171
bio_free+0xd1/0x1a0 block/bio.c:257
bio_put+0x59/0x70 block/bio.c:558
dio_bio_complete+0x32e/0x5d0 fs/direct-io.c:563
dio_await_completion fs/direct-io.c:581 [inline]
do_blockdev_direct_IO fs/direct-io.c:1394 [inline]
__blockdev_direct_IO+0x7a20/0xdcb0 fs/direct-io.c:1423
ext4_direct_IO_write fs/ext4/inode.c:3724 [inline]
ext4_direct_IO+0x888/0x1b80 fs/ext4/inode.c:3865
generic_file_direct_write+0x1df/0x420 mm/filemap.c:2958
__generic_file_write_iter+0x2a2/0x590 mm/filemap.c:3137
ext4_file_write_iter+0x276/0xd20 fs/ext4/file.c:270
call_write_iter include/linux/fs.h:1780 [inline]
new_sync_write fs/read_write.c:469 [inline]
__vfs_write+0x44c/0x630 fs/read_write.c:482
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+0x46/0xbb
The buggy address belongs to the object at ffff88809f145a40
which belongs to the cache biovec-max of size 8192
The buggy address is located 4016 bytes to the left of
8192-byte region [ffff88809f145a40, ffff88809f147a40)
The buggy address belongs to the page:
page:ffffea00027c5100 count:1 mapcount:0 mapping:ffff88809f145a40 index:0x0 compound_mapcount: 0
flags: 0xfff00000008100(slab|head)
raw: 00fff00000008100 ffff88809f145a40 0000000000000000 0000000100000001
raw: ffffea0002a22620 ffffea00027c0820 ffff88823b3f7000 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff88809f144980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff88809f144a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88809f144a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
^
ffff88809f144b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff88809f144b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
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syzbot
Sep 5, 2022, 4:15:21 PM9/5/22
to syzkaller...@googlegroups.com
Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.
Crashes did not happen for a while, no reproducer and no activity.
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