[v5.15] KASAN: use-after-free Read in device_shutdown (2)
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syzbot
Jan 15, 2025, 3:45:23 PM1/15/25
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 4735586da88e Linux 5.15.176
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=13df7cb0580000
kernel config: https://syzkaller.appspot.com/x/.config?x=8c3b695ffd9247a0
dashboard link: https://syzkaller.appspot.com/bug?extid=753f1b48ec417bf9e804
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/44a9faa53b37/disk-4735586d.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/2e4ec21926b2/vmlinux-4735586d.xz
kernel image: https://storage.googleapis.com/syzbot-assets/f96f554b1d28/bzImage-4735586d.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+753f1b...@syzkaller.appspotmail.com
==================================================================
BUG: KASAN: use-after-free in __mutex_waiter_is_first kernel/locking/mutex.c:191 [inline]
BUG: KASAN: use-after-free in __mutex_lock_common+0xe4a/0x25a0 kernel/locking/mutex.c:671
Read of size 8 at addr ffff88807e5da160 by task init/7461
CPU: 1 PID: 7461 Comm: init Not tainted 5.15.176-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
print_address_description+0x63/0x3b0 mm/kasan/report.c:248
__kasan_report mm/kasan/report.c:434 [inline]
kasan_report+0x16b/0x1c0 mm/kasan/report.c:451
__mutex_waiter_is_first kernel/locking/mutex.c:191 [inline]
__mutex_lock_common+0xe4a/0x25a0 kernel/locking/mutex.c:671
__mutex_lock kernel/locking/mutex.c:729 [inline]
mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
device_lock include/linux/device.h:760 [inline]
device_shutdown+0x216/0x620 drivers/base/core.c:4549
kernel_shutdown_prepare kernel/reboot.c:266 [inline]
kernel_power_off+0x4f/0xb0 kernel/reboot.c:291
__do_sys_reboot kernel/reboot.c:366 [inline]
__se_sys_reboot+0x4b2/0x540 kernel/reboot.c:312
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fc5b76a48b4
Code: f0 ff ff 73 01 c3 48 8b 0d 71 55 0d 00 f7 d8 64 89 01 48 83 c8 ff c3 89 fa be 69 19 12 28 bf ad de e1 fe b8 a9 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 10 48 8b 15 45 55 0d 00 f7 d8 64 89 02 48 83
RSP: 002b:00007fff0bf3ef68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a9
RAX: ffffffffffffffda RBX: 000000000000000c RCX: 00007fc5b76a48b4
RDX: 000000004321fedc RSI: 0000000028121969 RDI: 00000000fee1dead
RBP: 000000004321fedc R08: 0000000000000000 R09: 0000000000000000
R10: 00007fff0bf3ef40 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff0bf3efc8 R14: 00005633fa1a9169 R15: 00007fc5b787ca80
</TASK>
Allocated by task 7054:
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
____kasan_kmalloc+0xba/0xf0 mm/kasan/common.c:513
kasan_kmalloc include/linux/kasan.h:264 [inline]
kmem_cache_alloc_trace+0x143/0x290 mm/slub.c:3247
kmalloc include/linux/slab.h:591 [inline]
kzalloc include/linux/slab.h:721 [inline]
nsim_bus_dev_new drivers/net/netdevsim/bus.c:408 [inline]
new_device_store+0x238/0x910 drivers/net/netdevsim/bus.c:302
kernfs_fop_write_iter+0x3a2/0x4f0 fs/kernfs/file.c:296
call_write_iter include/linux/fs.h:2174 [inline]
new_sync_write fs/read_write.c:507 [inline]
vfs_write+0xacd/0xe50 fs/read_write.c:594
ksys_write+0x1a2/0x2c0 fs/read_write.c:647
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
Freed by task 7430:
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track+0x4b/0x80 mm/kasan/common.c:46
kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360
____kasan_slab_free+0xd8/0x120 mm/kasan/common.c:366
kasan_slab_free include/linux/kasan.h:230 [inline]
slab_free_hook mm/slub.c:1705 [inline]
slab_free_freelist_hook+0xdd/0x160 mm/slub.c:1731
slab_free mm/slub.c:3499 [inline]
kfree+0xf1/0x270 mm/slub.c:4559
nsim_bus_dev_del drivers/net/netdevsim/bus.c:457 [inline]
del_device_store+0x36f/0x470 drivers/net/netdevsim/bus.c:354
kernfs_fop_write_iter+0x3a2/0x4f0 fs/kernfs/file.c:296
call_write_iter include/linux/fs.h:2174 [inline]
new_sync_write fs/read_write.c:507 [inline]
vfs_write+0xacd/0xe50 fs/read_write.c:594
ksys_write+0x1a2/0x2c0 fs/read_write.c:647
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
Last potentially related work creation:
kasan_save_stack+0x36/0x60 mm/kasan/common.c:38
kasan_record_aux_stack+0xba/0x100 mm/kasan/generic.c:348
kvfree_call_rcu+0x118/0x8a0 kernel/rcu/tree.c:3596
drop_sysctl_table+0x317/0x460 fs/proc/proc_sysctl.c:1678
unregister_sysctl_table+0x88/0x130 fs/proc/proc_sysctl.c:1716
__addrconf_sysctl_unregister net/ipv6/addrconf.c:7120 [inline]
addrconf_sysctl_unregister net/ipv6/addrconf.c:7148 [inline]
addrconf_ifdown+0x183b/0x1bb0 net/ipv6/addrconf.c:3931
addrconf_notify+0x432/0xf30
notifier_call_chain kernel/notifier.c:83 [inline]
raw_notifier_call_chain+0xd0/0x170 kernel/notifier.c:391
call_netdevice_notifiers_info net/core/dev.c:2018 [inline]
call_netdevice_notifiers_extack net/core/dev.c:2030 [inline]
call_netdevice_notifiers net/core/dev.c:2044 [inline]
unregister_netdevice_many+0xf1b/0x18f0 net/core/dev.c:11102
ip6_tnl_exit_batch_net+0x592/0x5e0 net/ipv6/ip6_tunnel.c:2324
ops_exit_list net/core/net_namespace.c:177 [inline]
cleanup_net+0x763/0xb60 net/core/net_namespace.c:599
process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
kthread+0x3f6/0x4f0 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
Second to last potentially related work creation:
kasan_save_stack+0x36/0x60 mm/kasan/common.c:38
kasan_record_aux_stack+0xba/0x100 mm/kasan/generic.c:348
__call_rcu kernel/rcu/tree.c:3007 [inline]
call_rcu+0x1c4/0xa70 kernel/rcu/tree.c:3087
netlink_release+0x143c/0x18d0 net/netlink/af_netlink.c:800
__sock_release net/socket.c:649 [inline]
sock_close+0xcd/0x230 net/socket.c:1336
__fput+0x3fe/0x8e0 fs/file_table.c:280
task_work_run+0x129/0x1a0 kernel/task_work.c:188
tracehook_notify_resume include/linux/tracehook.h:189 [inline]
exit_to_user_mode_loop+0x106/0x130 kernel/entry/common.c:181
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214
__syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
syscall_exit_to_user_mode+0x5d/0x240 kernel/entry/common.c:307
do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x66/0xd0
The buggy address belongs to the object at ffff88807e5da000
which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 352 bytes inside of
2048-byte region [ffff88807e5da000, ffff88807e5da800)
The buggy address belongs to the page:
page:ffffea0001f97600 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7e5d8
head:ffffea0001f97600 order:3 compound_mapcount:0 compound_pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 ffffea0001e26600 0000000200000002 ffff888017442000
raw: 0000000000000000 0000000000080008 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 4177, ts 78911233371, free_ts 78905890999
prep_new_page mm/page_alloc.c:2426 [inline]
get_page_from_freelist+0x3b78/0x3d40 mm/page_alloc.c:4192
__alloc_pages+0x272/0x700 mm/page_alloc.c:5465
alloc_slab_page mm/slub.c:1775 [inline]
allocate_slab mm/slub.c:1912 [inline]
new_slab+0xbb/0x4b0 mm/slub.c:1975
___slab_alloc+0x6f6/0xe10 mm/slub.c:3008
__slab_alloc mm/slub.c:3095 [inline]
slab_alloc_node mm/slub.c:3186 [inline]
slab_alloc mm/slub.c:3228 [inline]
kmem_cache_alloc_trace+0x1a0/0x290 mm/slub.c:3245
kmalloc include/linux/slab.h:591 [inline]
kzalloc include/linux/slab.h:721 [inline]
ipv6_add_dev+0xce/0x1180 net/ipv6/addrconf.c:384
addrconf_notify+0x671/0xf30 net/ipv6/addrconf.c:3579
notifier_call_chain kernel/notifier.c:83 [inline]
raw_notifier_call_chain+0xd0/0x170 kernel/notifier.c:391
call_netdevice_notifiers_info net/core/dev.c:2018 [inline]
call_netdevice_notifiers_extack net/core/dev.c:2030 [inline]
call_netdevice_notifiers+0x145/0x1b0 net/core/dev.c:2044
register_netdevice+0x12e8/0x1720 net/core/dev.c:10396
veth_newlink+0x94f/0xe20 drivers/net/veth.c:1714
__rtnl_newlink net/core/rtnetlink.c:3521 [inline]
rtnl_newlink+0x14e1/0x2070 net/core/rtnetlink.c:3569
rtnetlink_rcv_msg+0x993/0xee0 net/core/rtnetlink.c:5647
netlink_rcv_skb+0x1cf/0x410 net/netlink/af_netlink.c:2489
netlink_unicast_kernel net/netlink/af_netlink.c:1311 [inline]
netlink_unicast+0x7b6/0x980 net/netlink/af_netlink.c:1337
netlink_sendmsg+0xa30/0xd60 net/netlink/af_netlink.c:1905
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1340 [inline]
free_pcp_prepare mm/page_alloc.c:1391 [inline]
free_unref_page_prepare+0xc34/0xcf0 mm/page_alloc.c:3317
free_unref_page+0x95/0x2d0 mm/page_alloc.c:3396
free_slab mm/slub.c:2015 [inline]
discard_slab mm/slub.c:2021 [inline]
__unfreeze_partials+0x1b7/0x210 mm/slub.c:2507
put_cpu_partial+0x132/0x1a0 mm/slub.c:2587
do_slab_free mm/slub.c:3487 [inline]
___cache_free+0xe3/0x100 mm/slub.c:3506
qlist_free_all+0x36/0x90 mm/kasan/quarantine.c:176
kasan_quarantine_reduce+0x162/0x180 mm/kasan/quarantine.c:283
__kasan_slab_alloc+0x2f/0xc0 mm/kasan/common.c:444
kasan_slab_alloc include/linux/kasan.h:254 [inline]
slab_post_alloc_hook+0x53/0x380 mm/slab.h:519
slab_alloc_node mm/slub.c:3220 [inline]
slab_alloc mm/slub.c:3228 [inline]
kmem_cache_alloc+0xf3/0x280 mm/slub.c:3233
kmem_cache_zalloc include/linux/slab.h:711 [inline]
__kernfs_new_node+0xdb/0x750 fs/kernfs/dir.c:593
kernfs_new_node+0x136/0x230 fs/kernfs/dir.c:669
__kernfs_create_file+0x45/0x2e0 fs/kernfs/file.c:985
sysfs_add_file_mode_ns+0x308/0x3e0 fs/sysfs/file.c:317
create_files fs/sysfs/group.c:64 [inline]
internal_create_group+0x573/0xf00 fs/sysfs/group.c:149
internal_create_groups fs/sysfs/group.c:189 [inline]
sysfs_create_groups+0x52/0x110 fs/sysfs/group.c:215
Memory state around the buggy address:
ffff88807e5da000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88807e5da080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88807e5da100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88807e5da180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88807e5da200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
---
This report is generated by a bot. It may contain errors.
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If the report is a duplicate of another one, reply with:
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If you want to undo deduplication, reply with:
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syzbot found the following issue on:
HEAD commit: 4735586da88e Linux 5.15.176
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=13df7cb0580000
kernel config: https://syzkaller.appspot.com/x/.config?x=8c3b695ffd9247a0
dashboard link: https://syzkaller.appspot.com/bug?extid=753f1b48ec417bf9e804
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/44a9faa53b37/disk-4735586d.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/2e4ec21926b2/vmlinux-4735586d.xz
kernel image: https://storage.googleapis.com/syzbot-assets/f96f554b1d28/bzImage-4735586d.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+753f1b...@syzkaller.appspotmail.com
==================================================================
BUG: KASAN: use-after-free in __mutex_waiter_is_first kernel/locking/mutex.c:191 [inline]
BUG: KASAN: use-after-free in __mutex_lock_common+0xe4a/0x25a0 kernel/locking/mutex.c:671
Read of size 8 at addr ffff88807e5da160 by task init/7461
CPU: 1 PID: 7461 Comm: init Not tainted 5.15.176-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
print_address_description+0x63/0x3b0 mm/kasan/report.c:248
__kasan_report mm/kasan/report.c:434 [inline]
kasan_report+0x16b/0x1c0 mm/kasan/report.c:451
__mutex_waiter_is_first kernel/locking/mutex.c:191 [inline]
__mutex_lock_common+0xe4a/0x25a0 kernel/locking/mutex.c:671
__mutex_lock kernel/locking/mutex.c:729 [inline]
mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
device_lock include/linux/device.h:760 [inline]
device_shutdown+0x216/0x620 drivers/base/core.c:4549
kernel_shutdown_prepare kernel/reboot.c:266 [inline]
kernel_power_off+0x4f/0xb0 kernel/reboot.c:291
__do_sys_reboot kernel/reboot.c:366 [inline]
__se_sys_reboot+0x4b2/0x540 kernel/reboot.c:312
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fc5b76a48b4
Code: f0 ff ff 73 01 c3 48 8b 0d 71 55 0d 00 f7 d8 64 89 01 48 83 c8 ff c3 89 fa be 69 19 12 28 bf ad de e1 fe b8 a9 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 10 48 8b 15 45 55 0d 00 f7 d8 64 89 02 48 83
RSP: 002b:00007fff0bf3ef68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a9
RAX: ffffffffffffffda RBX: 000000000000000c RCX: 00007fc5b76a48b4
RDX: 000000004321fedc RSI: 0000000028121969 RDI: 00000000fee1dead
RBP: 000000004321fedc R08: 0000000000000000 R09: 0000000000000000
R10: 00007fff0bf3ef40 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff0bf3efc8 R14: 00005633fa1a9169 R15: 00007fc5b787ca80
</TASK>
Allocated by task 7054:
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
____kasan_kmalloc+0xba/0xf0 mm/kasan/common.c:513
kasan_kmalloc include/linux/kasan.h:264 [inline]
kmem_cache_alloc_trace+0x143/0x290 mm/slub.c:3247
kmalloc include/linux/slab.h:591 [inline]
kzalloc include/linux/slab.h:721 [inline]
nsim_bus_dev_new drivers/net/netdevsim/bus.c:408 [inline]
new_device_store+0x238/0x910 drivers/net/netdevsim/bus.c:302
kernfs_fop_write_iter+0x3a2/0x4f0 fs/kernfs/file.c:296
call_write_iter include/linux/fs.h:2174 [inline]
new_sync_write fs/read_write.c:507 [inline]
vfs_write+0xacd/0xe50 fs/read_write.c:594
ksys_write+0x1a2/0x2c0 fs/read_write.c:647
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
Freed by task 7430:
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track+0x4b/0x80 mm/kasan/common.c:46
kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360
____kasan_slab_free+0xd8/0x120 mm/kasan/common.c:366
kasan_slab_free include/linux/kasan.h:230 [inline]
slab_free_hook mm/slub.c:1705 [inline]
slab_free_freelist_hook+0xdd/0x160 mm/slub.c:1731
slab_free mm/slub.c:3499 [inline]
kfree+0xf1/0x270 mm/slub.c:4559
nsim_bus_dev_del drivers/net/netdevsim/bus.c:457 [inline]
del_device_store+0x36f/0x470 drivers/net/netdevsim/bus.c:354
kernfs_fop_write_iter+0x3a2/0x4f0 fs/kernfs/file.c:296
call_write_iter include/linux/fs.h:2174 [inline]
new_sync_write fs/read_write.c:507 [inline]
vfs_write+0xacd/0xe50 fs/read_write.c:594
ksys_write+0x1a2/0x2c0 fs/read_write.c:647
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
Last potentially related work creation:
kasan_save_stack+0x36/0x60 mm/kasan/common.c:38
kasan_record_aux_stack+0xba/0x100 mm/kasan/generic.c:348
kvfree_call_rcu+0x118/0x8a0 kernel/rcu/tree.c:3596
drop_sysctl_table+0x317/0x460 fs/proc/proc_sysctl.c:1678
unregister_sysctl_table+0x88/0x130 fs/proc/proc_sysctl.c:1716
__addrconf_sysctl_unregister net/ipv6/addrconf.c:7120 [inline]
addrconf_sysctl_unregister net/ipv6/addrconf.c:7148 [inline]
addrconf_ifdown+0x183b/0x1bb0 net/ipv6/addrconf.c:3931
addrconf_notify+0x432/0xf30
notifier_call_chain kernel/notifier.c:83 [inline]
raw_notifier_call_chain+0xd0/0x170 kernel/notifier.c:391
call_netdevice_notifiers_info net/core/dev.c:2018 [inline]
call_netdevice_notifiers_extack net/core/dev.c:2030 [inline]
call_netdevice_notifiers net/core/dev.c:2044 [inline]
unregister_netdevice_many+0xf1b/0x18f0 net/core/dev.c:11102
ip6_tnl_exit_batch_net+0x592/0x5e0 net/ipv6/ip6_tunnel.c:2324
ops_exit_list net/core/net_namespace.c:177 [inline]
cleanup_net+0x763/0xb60 net/core/net_namespace.c:599
process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
kthread+0x3f6/0x4f0 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
Second to last potentially related work creation:
kasan_save_stack+0x36/0x60 mm/kasan/common.c:38
kasan_record_aux_stack+0xba/0x100 mm/kasan/generic.c:348
__call_rcu kernel/rcu/tree.c:3007 [inline]
call_rcu+0x1c4/0xa70 kernel/rcu/tree.c:3087
netlink_release+0x143c/0x18d0 net/netlink/af_netlink.c:800
__sock_release net/socket.c:649 [inline]
sock_close+0xcd/0x230 net/socket.c:1336
__fput+0x3fe/0x8e0 fs/file_table.c:280
task_work_run+0x129/0x1a0 kernel/task_work.c:188
tracehook_notify_resume include/linux/tracehook.h:189 [inline]
exit_to_user_mode_loop+0x106/0x130 kernel/entry/common.c:181
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214
__syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
syscall_exit_to_user_mode+0x5d/0x240 kernel/entry/common.c:307
do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x66/0xd0
The buggy address belongs to the object at ffff88807e5da000
which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 352 bytes inside of
2048-byte region [ffff88807e5da000, ffff88807e5da800)
The buggy address belongs to the page:
page:ffffea0001f97600 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7e5d8
head:ffffea0001f97600 order:3 compound_mapcount:0 compound_pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 ffffea0001e26600 0000000200000002 ffff888017442000
raw: 0000000000000000 0000000000080008 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 4177, ts 78911233371, free_ts 78905890999
prep_new_page mm/page_alloc.c:2426 [inline]
get_page_from_freelist+0x3b78/0x3d40 mm/page_alloc.c:4192
__alloc_pages+0x272/0x700 mm/page_alloc.c:5465
alloc_slab_page mm/slub.c:1775 [inline]
allocate_slab mm/slub.c:1912 [inline]
new_slab+0xbb/0x4b0 mm/slub.c:1975
___slab_alloc+0x6f6/0xe10 mm/slub.c:3008
__slab_alloc mm/slub.c:3095 [inline]
slab_alloc_node mm/slub.c:3186 [inline]
slab_alloc mm/slub.c:3228 [inline]
kmem_cache_alloc_trace+0x1a0/0x290 mm/slub.c:3245
kmalloc include/linux/slab.h:591 [inline]
kzalloc include/linux/slab.h:721 [inline]
ipv6_add_dev+0xce/0x1180 net/ipv6/addrconf.c:384
addrconf_notify+0x671/0xf30 net/ipv6/addrconf.c:3579
notifier_call_chain kernel/notifier.c:83 [inline]
raw_notifier_call_chain+0xd0/0x170 kernel/notifier.c:391
call_netdevice_notifiers_info net/core/dev.c:2018 [inline]
call_netdevice_notifiers_extack net/core/dev.c:2030 [inline]
call_netdevice_notifiers+0x145/0x1b0 net/core/dev.c:2044
register_netdevice+0x12e8/0x1720 net/core/dev.c:10396
veth_newlink+0x94f/0xe20 drivers/net/veth.c:1714
__rtnl_newlink net/core/rtnetlink.c:3521 [inline]
rtnl_newlink+0x14e1/0x2070 net/core/rtnetlink.c:3569
rtnetlink_rcv_msg+0x993/0xee0 net/core/rtnetlink.c:5647
netlink_rcv_skb+0x1cf/0x410 net/netlink/af_netlink.c:2489
netlink_unicast_kernel net/netlink/af_netlink.c:1311 [inline]
netlink_unicast+0x7b6/0x980 net/netlink/af_netlink.c:1337
netlink_sendmsg+0xa30/0xd60 net/netlink/af_netlink.c:1905
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1340 [inline]
free_pcp_prepare mm/page_alloc.c:1391 [inline]
free_unref_page_prepare+0xc34/0xcf0 mm/page_alloc.c:3317
free_unref_page+0x95/0x2d0 mm/page_alloc.c:3396
free_slab mm/slub.c:2015 [inline]
discard_slab mm/slub.c:2021 [inline]
__unfreeze_partials+0x1b7/0x210 mm/slub.c:2507
put_cpu_partial+0x132/0x1a0 mm/slub.c:2587
do_slab_free mm/slub.c:3487 [inline]
___cache_free+0xe3/0x100 mm/slub.c:3506
qlist_free_all+0x36/0x90 mm/kasan/quarantine.c:176
kasan_quarantine_reduce+0x162/0x180 mm/kasan/quarantine.c:283
__kasan_slab_alloc+0x2f/0xc0 mm/kasan/common.c:444
kasan_slab_alloc include/linux/kasan.h:254 [inline]
slab_post_alloc_hook+0x53/0x380 mm/slab.h:519
slab_alloc_node mm/slub.c:3220 [inline]
slab_alloc mm/slub.c:3228 [inline]
kmem_cache_alloc+0xf3/0x280 mm/slub.c:3233
kmem_cache_zalloc include/linux/slab.h:711 [inline]
__kernfs_new_node+0xdb/0x750 fs/kernfs/dir.c:593
kernfs_new_node+0x136/0x230 fs/kernfs/dir.c:669
__kernfs_create_file+0x45/0x2e0 fs/kernfs/file.c:985
sysfs_add_file_mode_ns+0x308/0x3e0 fs/sysfs/file.c:317
create_files fs/sysfs/group.c:64 [inline]
internal_create_group+0x573/0xf00 fs/sysfs/group.c:149
internal_create_groups fs/sysfs/group.c:189 [inline]
sysfs_create_groups+0x52/0x110 fs/sysfs/group.c:215
Memory state around the buggy address:
ffff88807e5da000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88807e5da080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88807e5da100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88807e5da180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88807e5da200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
---
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syzbot
Apr 25, 2025, 6:07:20 PM4/25/25
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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