==================================================================
BUG: KASAN: slab-use-after-free in instrument_atomic_read include/linux/instrumented.h:68 [inline]
BUG: KASAN: slab-use-after-free in atomic_read include/linux/atomic/atomic-instrumented.h:32 [inline]
BUG: KASAN: slab-use-after-free in refcount_read include/linux/refcount.h:136 [inline]
BUG: KASAN: slab-use-after-free in skb_unref include/linux/skbuff.h:1222 [inline]
BUG: KASAN: slab-use-after-free in __kfree_skb_reason net/core/skbuff.c:1195 [inline]
BUG: KASAN: slab-use-after-free in kfree_skb_reason+0x36/0x210 net/core/skbuff.c:1222
Read of size 4 at addr ffff8880632dbc24 by task syz-executor/5103
CPU: 1 PID: 5103 Comm: syz-executor Not tainted 6.10.0-rc6-syzkaller-00069-g795c58e4c7fc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
print_address_description mm/kasan/report.c:377 [inline]
print_report+0xc3/0x620 mm/kasan/report.c:488
kasan_report+0xd9/0x110 mm/kasan/report.c:601
check_region_inline mm/kasan/generic.c:183 [inline]
kasan_check_range+0xef/0x1a0 mm/kasan/generic.c:189
instrument_atomic_read include/linux/instrumented.h:68 [inline]
atomic_read include/linux/atomic/atomic-instrumented.h:32 [inline]
refcount_read include/linux/refcount.h:136 [inline]
skb_unref include/linux/skbuff.h:1222 [inline]
__kfree_skb_reason net/core/skbuff.c:1195 [inline]
kfree_skb_reason+0x36/0x210 net/core/skbuff.c:1222
kfree_skb include/linux/skbuff.h:1257 [inline]
__hci_req_sync+0x61d/0x980 net/bluetooth/hci_request.c:184
hci_req_sync+0x97/0xd0 net/bluetooth/hci_request.c:206
hci_dev_cmd+0x634/0x960 net/bluetooth/hci_core.c:787
hci_sock_ioctl+0x4f3/0x880 net/bluetooth/hci_sock.c:1150
sock_do_ioctl+0x119/0x280 net/socket.c:1222
sock_ioctl+0x22e/0x6c0 net/socket.c:1341
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl fs/ioctl.c:893 [inline]
__x64_sys_ioctl+0x196/0x220 fs/ioctl.c:893
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb7bb9757db
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007fffd72953f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fb7bb9757db
RDX: 00007fffd7295468 RSI: 00000000400448dd RDI: 0000000000000003
RBP: 000055558dc304a8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000005
R13: 0000000000000005 R14: 0000000000000009 R15: 0000000000000009
Allocated by task 4486:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:312 [inline]
__kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:338
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3940 [inline]
slab_alloc_node mm/slub.c:4002 [inline]
kmem_cache_alloc_noprof+0x121/0x2f0 mm/slub.c:4009
skb_clone+0x190/0x3f0 net/core/skbuff.c:2052
hci_send_cmd_sync net/bluetooth/hci_core.c:4123 [inline]
hci_cmd_work+0x66a/0x710 net/bluetooth/hci_core.c:4143
process_one_work+0x9c8/0x1b40 kernel/workqueue.c:3248
process_scheduled_works kernel/workqueue.c:3329 [inline]
worker_thread+0x6c8/0xf30 kernel/workqueue.c:3409
kthread+0x2c4/0x3a0 kernel/kthread.c:389
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Freed by task 4486:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579
poison_slab_object+0xf7/0x160 mm/kasan/common.c:240
__kasan_slab_free+0x32/0x50 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2196 [inline]
slab_free mm/slub.c:4438 [inline]
kmem_cache_free+0x12f/0x3a0 mm/slub.c:4513
kfree_skbmem+0x10e/0x200 net/core/skbuff.c:1131
__kfree_skb net/core/skbuff.c:1188 [inline]
kfree_skb_reason+0x138/0x210 net/core/skbuff.c:1223
kfree_skb include/linux/skbuff.h:1257 [inline]
hci_req_sync_complete+0x16c/0x270 net/bluetooth/hci_request.c:109
hci_event_packet+0x966/0x1170 net/bluetooth/hci_event.c:7479
hci_rx_work+0x2c4/0x1610 net/bluetooth/hci_core.c:4074
process_one_work+0x9c8/0x1b40 kernel/workqueue.c:3248
process_scheduled_works kernel/workqueue.c:3329 [inline]
worker_thread+0x6c8/0xf30 kernel/workqueue.c:3409
kthread+0x2c4/0x3a0 kernel/kthread.c:389
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
The buggy address belongs to the object at ffff8880632dbb40
which belongs to the cache skbuff_head_cache of size 240
The buggy address is located 228 bytes inside of
freed 240-byte region [ffff8880632dbb40, ffff8880632dbc30)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x632db
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffefff(slab)
raw: 00fff00000000000 ffff888018edc780 dead000000000122 0000000000000000
raw: 0000000000000000 00000000000c000c 00000001ffffefff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 5097, tgid 5097 (syz-executor), ts 110413636297, free_ts 37146400838
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1473
prep_new_page mm/page_alloc.c:1481 [inline]
get_page_from_freelist+0x1353/0x2e50 mm/page_alloc.c:3425
__alloc_pages_noprof+0x22b/0x2460 mm/page_alloc.c:4683
__alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
alloc_slab_page+0x56/0x110 mm/slub.c:2265
allocate_slab mm/slub.c:2428 [inline]
new_slab+0x84/0x260 mm/slub.c:2481
___slab_alloc+0xdac/0x1870 mm/slub.c:3667
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3757
__slab_alloc_node mm/slub.c:3810 [inline]
slab_alloc_node mm/slub.c:3990 [inline]
kmem_cache_alloc_node_noprof+0xed/0x310 mm/slub.c:4045
__alloc_skb+0x2b1/0x380 net/core/skbuff.c:656
alloc_skb include/linux/skbuff.h:1308 [inline]
nlmsg_new include/net/netlink.h:1015 [inline]
rtmsg_ifinfo_build_skb+0x81/0x280 net/core/rtnetlink.c:4064
rtmsg_ifinfo_event net/core/rtnetlink.c:4107 [inline]
rtmsg_ifinfo_event net/core/rtnetlink.c:4097 [inline]
rtmsg_ifinfo+0x9f/0x1a0 net/core/rtnetlink.c:4116
register_netdevice+0x1710/0x1cb0 net/core/dev.c:10422
__ip_tunnel_create+0x4aa/0x690 net/ipv4/ip_tunnel.c:266
ip_tunnel_init_net+0x22a/0x780 net/ipv4/ip_tunnel.c:1160
ops_init+0xbc/0x650 net/core/net_namespace.c:139
setup_net+0x435/0xb40 net/core/net_namespace.c:343
page last free pid 1 tgid 1 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1093 [inline]
free_unref_page+0x64a/0xe40 mm/page_alloc.c:2588
free_contig_range+0xb6/0x1a0 mm/page_alloc.c:6642
destroy_args+0xa4e/0xe20 mm/debug_vm_pgtable.c:1017
debug_vm_pgtable+0x1705/0x3280 mm/debug_vm_pgtable.c:1397
do_one_initcall+0x12b/0x700 init/main.c:1267
do_initcall_level init/main.c:1329 [inline]
do_initcalls init/main.c:1345 [inline]
do_basic_setup init/main.c:1364 [inline]
kernel_init_freeable+0x69d/0xca0 init/main.c:1578
kernel_init+0x1c/0x2b0 init/main.c:1467
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Memory state around the buggy address:
ffff8880632dbb00: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
ffff8880632dbb80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880632dbc00: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc
^
ffff8880632dbc80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffff8880632dbd00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc
==================================================================
==================================================================
BUG: KASAN: slab-use-after-free in arch_atomic_read arch/x86/include/asm/atomic.h:23 [inline]
BUG: KASAN: slab-use-after-free in raw_atomic_read include/linux/atomic/atomic-arch-fallback.h:457 [inline]
BUG: KASAN: slab-use-after-free in atomic_read include/linux/atomic/atomic-instrumented.h:33 [inline]
BUG: KASAN: slab-use-after-free in refcount_read include/linux/refcount.h:136 [inline]
BUG: KASAN: slab-use-after-free in skb_unref include/linux/skbuff.h:1222 [inline]
BUG: KASAN: slab-use-after-free in __kfree_skb_reason net/core/skbuff.c:1195 [inline]
BUG: KASAN: slab-use-after-free in kfree_skb_reason+0x1f5/0x210 net/core/skbuff.c:1222
Read of size 4 at addr ffff8880632dbc24 by task syz-executor/5103
CPU: 1 PID: 5103 Comm: syz-executor Tainted: G B 6.10.0-rc6-syzkaller-00069-g795c58e4c7fc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
print_address_description mm/kasan/report.c:377 [inline]
print_report+0xc3/0x620 mm/kasan/report.c:488
kasan_report+0xd9/0x110 mm/kasan/report.c:601
arch_atomic_read arch/x86/include/asm/atomic.h:23 [inline]
raw_atomic_read include/linux/atomic/atomic-arch-fallback.h:457 [inline]
atomic_read include/linux/atomic/atomic-instrumented.h:33 [inline]
refcount_read include/linux/refcount.h:136 [inline]
skb_unref include/linux/skbuff.h:1222 [inline]
__kfree_skb_reason net/core/skbuff.c:1195 [inline]
kfree_skb_reason+0x1f5/0x210 net/core/skbuff.c:1222
kfree_skb include/linux/skbuff.h:1257 [inline]
__hci_req_sync+0x61d/0x980 net/bluetooth/hci_request.c:184
hci_req_sync+0x97/0xd0 net/bluetooth/hci_request.c:206
hci_dev_cmd+0x634/0x960 net/bluetooth/hci_core.c:787
hci_sock_ioctl+0x4f3/0x880 net/bluetooth/hci_sock.c:1150
sock_do_ioctl+0x119/0x280 net/socket.c:1222
sock_ioctl+0x22e/0x6c0 net/socket.c:1341
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl fs/ioctl.c:893 [inline]
__x64_sys_ioctl+0x196/0x220 fs/ioctl.c:893
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb7bb9757db
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007fffd72953f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fb7bb9757db
RDX: 00007fffd7295468 RSI: 00000000400448dd RDI: 0000000000000003
RBP: 000055558dc304a8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000005
R13: 0000000000000005 R14: 0000000000000009 R15: 0000000000000009
Allocated by task 4486:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:312 [inline]
__kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:338
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3940 [inline]
slab_alloc_node mm/slub.c:4002 [inline]
kmem_cache_alloc_noprof+0x121/0x2f0 mm/slub.c:4009
skb_clone+0x190/0x3f0 net/core/skbuff.c:2052
hci_send_cmd_sync net/bluetooth/hci_core.c:4123 [inline]
hci_cmd_work+0x66a/0x710 net/bluetooth/hci_core.c:4143
process_one_work+0x9c8/0x1b40 kernel/workqueue.c:3248
process_scheduled_works kernel/workqueue.c:3329 [inline]
worker_thread+0x6c8/0xf30 kernel/workqueue.c:3409
kthread+0x2c4/0x3a0 kernel/kthread.c:389
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Freed by task 4486:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579
poison_slab_object+0xf7/0x160 mm/kasan/common.c:240
__kasan_slab_free+0x32/0x50 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2196 [inline]
slab_free mm/slub.c:4438 [inline]
kmem_cache_free+0x12f/0x3a0 mm/slub.c:4513
kfree_skbmem+0x10e/0x200 net/core/skbuff.c:1131
__kfree_skb net/core/skbuff.c:1188 [inline]
kfree_skb_reason+0x138/0x210 net/core/skbuff.c:1223
kfree_skb include/linux/skbuff.h:1257 [inline]
hci_req_sync_complete+0x16c/0x270 net/bluetooth/hci_request.c:109
hci_event_packet+0x966/0x1170 net/bluetooth/hci_event.c:7479
hci_rx_work+0x2c4/0x1610 net/bluetooth/hci_core.c:4074
process_one_work+0x9c8/0x1b40 kernel/workqueue.c:3248
process_scheduled_works kernel/workqueue.c:3329 [inline]
worker_thread+0x6c8/0xf30 kernel/workqueue.c:3409
kthread+0x2c4/0x3a0 kernel/kthread.c:389
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
The buggy address belongs to the object at ffff8880632dbb40
which belongs to the cache skbuff_head_cache of size 240
The buggy address is located 228 bytes inside of
freed 240-byte region [ffff8880632dbb40, ffff8880632dbc30)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x632db
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffefff(slab)
raw: 00fff00000000000 ffff888018edc780 dead000000000122 0000000000000000
raw: 0000000000000000 00000000000c000c 00000001ffffefff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 5097, tgid 5097 (syz-executor), ts 110413636297, free_ts 37146400838
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1473
prep_new_page mm/page_alloc.c:1481 [inline]
get_page_from_freelist+0x1353/0x2e50 mm/page_alloc.c:3425
__alloc_pages_noprof+0x22b/0x2460 mm/page_alloc.c:4683
__alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
alloc_slab_page+0x56/0x110 mm/slub.c:2265
allocate_slab mm/slub.c:2428 [inline]
new_slab+0x84/0x260 mm/slub.c:2481
___slab_alloc+0xdac/0x1870 mm/slub.c:3667
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3757
__slab_alloc_node mm/slub.c:3810 [inline]
slab_alloc_node mm/slub.c:3990 [inline]
kmem_cache_alloc_node_noprof+0xed/0x310 mm/slub.c:4045
__alloc_skb+0x2b1/0x380 net/core/skbuff.c:656
alloc_skb include/linux/skbuff.h:1308 [inline]
nlmsg_new include/net/netlink.h:1015 [inline]
rtmsg_ifinfo_build_skb+0x81/0x280 net/core/rtnetlink.c:4064
rtmsg_ifinfo_event net/core/rtnetlink.c:4107 [inline]
rtmsg_ifinfo_event net/core/rtnetlink.c:4097 [inline]
rtmsg_ifinfo+0x9f/0x1a0 net/core/rtnetlink.c:4116
register_netdevice+0x1710/0x1cb0 net/core/dev.c:10422
__ip_tunnel_create+0x4aa/0x690 net/ipv4/ip_tunnel.c:266
ip_tunnel_init_net+0x22a/0x780 net/ipv4/ip_tunnel.c:1160
ops_init+0xbc/0x650 net/core/net_namespace.c:139
setup_net+0x435/0xb40 net/core/net_namespace.c:343
page last free pid 1 tgid 1 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1093 [inline]
free_unref_page+0x64a/0xe40 mm/page_alloc.c:2588
free_contig_range+0xb6/0x1a0 mm/page_alloc.c:6642
destroy_args+0xa4e/0xe20 mm/debug_vm_pgtable.c:1017
debug_vm_pgtable+0x1705/0x3280 mm/debug_vm_pgtable.c:1397
do_one_initcall+0x12b/0x700 init/main.c:1267
do_initcall_level init/main.c:1329 [inline]
do_initcalls init/main.c:1345 [inline]
do_basic_setup init/main.c:1364 [inline]
kernel_init_freeable+0x69d/0xca0 init/main.c:1578
kernel_init+0x1c/0x2b0 init/main.c:1467
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Memory state around the buggy address:
ffff8880632dbb00: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
ffff8880632dbb80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880632dbc00: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc
^
ffff8880632dbc80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffff8880632dbd00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc
==================================================================
==================================================================
BUG: KASAN: slab-use-after-free in skb_dst_drop include/net/dst.h:274 [inline]
BUG: KASAN: slab-use-after-free in skb_release_head_state+0x283/0x2b0 net/core/skbuff.c:1157
Read of size 8 at addr ffff8880632dbb98 by task syz-executor/5103
CPU: 0 PID: 5103 Comm: syz-executor Tainted: G B 6.10.0-rc6-syzkaller-00069-g795c58e4c7fc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
print_address_description mm/kasan/report.c:377 [inline]
print_report+0xc3/0x620 mm/kasan/report.c:488
kasan_report+0xd9/0x110 mm/kasan/report.c:601
skb_dst_drop include/net/dst.h:274 [inline]
skb_release_head_state+0x283/0x2b0 net/core/skbuff.c:1157
skb_release_all net/core/skbuff.c:1171 [inline]
__kfree_skb net/core/skbuff.c:1187 [inline]
kfree_skb_reason+0xed/0x210 net/core/skbuff.c:1223
kfree_skb include/linux/skbuff.h:1257 [inline]
__hci_req_sync+0x61d/0x980 net/bluetooth/hci_request.c:184
hci_req_sync+0x97/0xd0 net/bluetooth/hci_request.c:206
hci_dev_cmd+0x634/0x960 net/bluetooth/hci_core.c:787
hci_sock_ioctl+0x4f3/0x880 net/bluetooth/hci_sock.c:1150
sock_do_ioctl+0x119/0x280 net/socket.c:1222
sock_ioctl+0x22e/0x6c0 net/socket.c:1341
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl fs/ioctl.c:893 [inline]
__x64_sys_ioctl+0x196/0x220 fs/ioctl.c:893
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb7bb9757db
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007fffd72953f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fb7bb9757db
RDX: 00007fffd7295468 RSI: 00000000400448dd RDI: 0000000000000003
RBP: 000055558dc304a8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000005
R13: 0000000000000005 R14: 0000000000000009 R15: 0000000000000009
Allocated by task 4486:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:312 [inline]
__kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:338
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3940 [inline]
slab_alloc_node mm/slub.c:4002 [inline]
kmem_cache_alloc_noprof+0x121/0x2f0 mm/slub.c:4009
skb_clone+0x190/0x3f0 net/core/skbuff.c:2052
hci_send_cmd_sync net/bluetooth/hci_core.c:4123 [inline]
hci_cmd_work+0x66a/0x710 net/bluetooth/hci_core.c:4143
process_one_work+0x9c8/0x1b40 kernel/workqueue.c:3248
process_scheduled_works kernel/workqueue.c:3329 [inline]
worker_thread+0x6c8/0xf30 kernel/workqueue.c:3409
kthread+0x2c4/0x3a0 kernel/kthread.c:389
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Freed by task 4486:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579
poison_slab_object+0xf7/0x160 mm/kasan/common.c:240
__kasan_slab_free+0x32/0x50 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2196 [inline]
slab_free mm/slub.c:4438 [inline]
kmem_cache_free+0x12f/0x3a0 mm/slub.c:4513
kfree_skbmem+0x10e/0x200 net/core/skbuff.c:1131
__kfree_skb net/core/skbuff.c:1188 [inline]
kfree_skb_reason+0x138/0x210 net/core/skbuff.c:1223
kfree_skb include/linux/skbuff.h:1257 [inline]
hci_req_sync_complete+0x16c/0x270 net/bluetooth/hci_request.c:109
hci_event_packet+0x966/0x1170 net/bluetooth/hci_event.c:7479
hci_rx_work+0x2c4/0x1610 net/bluetooth/hci_core.c:4074
process_one_work+0x9c8/0x1b40 kernel/workqueue.c:3248
process_scheduled_works kernel/workqueue.c:3329 [inline]
worker_thread+0x6c8/0xf30 kernel/workqueue.c:3409
kthread+0x2c4/0x3a0 kernel/kthread.c:389
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
The buggy address belongs to the object at ffff8880632dbb40
which belongs to the cache skbuff_head_cache of size 240
The buggy address is located 88 bytes inside of
freed 240-byte region [ffff8880632dbb40, ffff8880632dbc30)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x632db
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffefff(slab)
raw: 00fff00000000000 ffff888018edc780 dead000000000122 0000000000000000
raw: 0000000000000000 00000000000c000c 00000001ffffefff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 5097, tgid 5097 (syz-executor), ts 110413636297, free_ts 37146400838
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1473
prep_new_page mm/page_alloc.c:1481 [inline]
get_page_from_freelist+0x1353/0x2e50 mm/page_alloc.c:3425
__alloc_pages_noprof+0x22b/0x2460 mm/page_alloc.c:4683
__alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
alloc_slab_page+0x56/0x110 mm/slub.c:2265
allocate_slab mm/slub.c:2428 [inline]
new_slab+0x84/0x260 mm/slub.c:2481
___slab_alloc+0xdac/0x1870 mm/slub.c:3667
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3757
__slab_alloc_node mm/slub.c:3810 [inline]
slab_alloc_node mm/slub.c:3990 [inline]
kmem_cache_alloc_node_noprof+0xed/0x310 mm/slub.c:4045
__alloc_skb+0x2b1/0x380 net/core/skbuff.c:656
alloc_skb include/linux/skbuff.h:1308 [inline]
nlmsg_new include/net/netlink.h:1015 [inline]
rtmsg_ifinfo_build_skb+0x81/0x280 net/core/rtnetlink.c:4064
rtmsg_ifinfo_event net/core/rtnetlink.c:4107 [inline]
rtmsg_ifinfo_event net/core/rtnetlink.c:4097 [inline]
rtmsg_ifinfo+0x9f/0x1a0 net/core/rtnetlink.c:4116
register_netdevice+0x1710/0x1cb0 net/core/dev.c:10422
__ip_tunnel_create+0x4aa/0x690 net/ipv4/ip_tunnel.c:266
ip_tunnel_init_net+0x22a/0x780 net/ipv4/ip_tunnel.c:1160
ops_init+0xbc/0x650 net/core/net_namespace.c:139
setup_net+0x435/0xb40 net/core/net_namespace.c:343
page last free pid 1 tgid 1 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1093 [inline]
free_unref_page+0x64a/0xe40 mm/page_alloc.c:2588
free_contig_range+0xb6/0x1a0 mm/page_alloc.c:6642
destroy_args+0xa4e/0xe20 mm/debug_vm_pgtable.c:1017
debug_vm_pgtable+0x1705/0x3280 mm/debug_vm_pgtable.c:1397
do_one_initcall+0x12b/0x700 init/main.c:1267
do_initcall_level init/main.c:1329 [inline]
do_initcalls init/main.c:1345 [inline]
do_basic_setup init/main.c:1364 [inline]
kernel_init_freeable+0x69d/0xca0 init/main.c:1578
kernel_init+0x1c/0x2b0 init/main.c:1467
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Memory state around the buggy address:
ffff8880632dba80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc
ffff8880632dbb00: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
>ffff8880632dbb80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8880632dbc00: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc
ffff8880632dbc80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
==================================================================
BUG: KASAN: slab-use-after-free in skb_release_head_state+0x28d/0x2b0 net/core/skbuff.c:1158
Read of size 8 at addr ffff8880632dbba0 by task syz-executor/5103
CPU: 1 PID: 5103 Comm: syz-executor Tainted: G B 6.10.0-rc6-syzkaller-00069-g795c58e4c7fc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
print_address_description mm/kasan/report.c:377 [inline]
print_report+0xc3/0x620 mm/kasan/report.c:488
kasan_report+0xd9/0x110 mm/kasan/report.c:601
skb_release_head_state+0x28d/0x2b0 net/core/skbuff.c:1158
skb_release_all net/core/skbuff.c:1171 [inline]
__kfree_skb net/core/skbuff.c:1187 [inline]
kfree_skb_reason+0xed/0x210 net/core/skbuff.c:1223
kfree_skb include/linux/skbuff.h:1257 [inline]
__hci_req_sync+0x61d/0x980 net/bluetooth/hci_request.c:184
hci_req_sync+0x97/0xd0 net/bluetooth/hci_request.c:206
hci_dev_cmd+0x634/0x960 net/bluetooth/hci_core.c:787
hci_sock_ioctl+0x4f3/0x880 net/bluetooth/hci_sock.c:1150
sock_do_ioctl+0x119/0x280 net/socket.c:1222
sock_ioctl+0x22e/0x6c0 net/socket.c:1341
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl fs/ioctl.c:893 [inline]
__x64_sys_ioctl+0x196/0x220 fs/ioctl.c:893
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb7bb9757db
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007fffd72953f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fb7bb9757db
RDX: 00007fffd7295468 RSI: 00000000400448dd RDI: 0000000000000003
RBP: 000055558dc304a8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000005
R13: 0000000000000005 R14: 0000000000000009 R15: 0000000000000009
Allocated by task 4486:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:312 [inline]
__kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:338
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3940 [inline]
slab_alloc_node mm/slub.c:4002 [inline]
kmem_cache_alloc_noprof+0x121/0x2f0 mm/slub.c:4009
skb_clone+0x190/0x3f0 net/core/skbuff.c:2052
hci_send_cmd_sync net/bluetooth/hci_core.c:4123 [inline]
hci_cmd_work+0x66a/0x710 net/bluetooth/hci_core.c:4143
process_one_work+0x9c8/0x1b40 kernel/workqueue.c:3248
process_scheduled_works kernel/workqueue.c:3329 [inline]
worker_thread+0x6c8/0xf30 kernel/workqueue.c:3409
kthread+0x2c4/0x3a0 kernel/kthread.c:389
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Freed by task 4486:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579
poison_slab_object+0xf7/0x160 mm/kasan/common.c:240
__kasan_slab_free+0x32/0x50 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2196 [inline]
slab_free mm/slub.c:4438 [inline]
kmem_cache_free+0x12f/0x3a0 mm/slub.c:4513
kfree_skbmem+0x10e/0x200 net/core/skbuff.c:1131
__kfree_skb net/core/skbuff.c:1188 [inline]
kfree_skb_reason+0x138/0x210 net/core/skbuff.c:1223
kfree_skb include/linux/skbuff.h:1257 [inline]
hci_req_sync_complete+0x16c/0x270 net/bluetooth/hci_request.c:109
hci_event_packet+0x966/0x1170 net/bluetooth/hci_event.c:7479
hci_rx_work+0x2c4/0x1610 net/bluetooth/hci_core.c:4074
process_one_work+0x9c8/0x1b40 kernel/workqueue.c:3248
process_scheduled_works kernel/workqueue.c:3329 [inline]
worker_thread+0x6c8/0xf30 kernel/workqueue.c:3409
kthread+0x2c4/0x3a0 kernel/kthread.c:389
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
The buggy address belongs to the object at ffff8880632dbb40
which belongs to the cache skbuff_head_cache of size 240
The buggy address is located 96 bytes inside of
freed 240-byte region [ffff8880632dbb40, ffff8880632dbc30)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x632db
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffefff(slab)
raw: 00fff00000000000 ffff888018edc780 dead000000000122 0000000000000000
raw: 0000000000000000 00000000000c000c 00000001ffffefff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 5097, tgid 5097 (syz-executor), ts 110413636297, free_ts 37146400838
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1473
prep_new_page mm/page_alloc.c:1481 [inline]
get_page_from_freelist+0x1353/0x2e50 mm/page_alloc.c:3425
__alloc_pages_noprof+0x22b/0x2460 mm/page_alloc.c:4683
__alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
alloc_slab_page+0x56/0x110 mm/slub.c:2265
allocate_slab mm/slub.c:2428 [inline]
new_slab+0x84/0x260 mm/slub.c:2481
___slab_alloc+0xdac/0x1870 mm/slub.c:3667
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3757
__slab_alloc_node mm/slub.c:3810 [inline]
slab_alloc_node mm/slub.c:3990 [inline]
kmem_cache_alloc_node_noprof+0xed/0x310 mm/slub.c:4045
__alloc_skb+0x2b1/0x380 net/core/skbuff.c:656
alloc_skb include/linux/skbuff.h:1308 [inline]
nlmsg_new include/net/netlink.h:1015 [inline]
rtmsg_ifinfo_build_skb+0x81/0x280 net/core/rtnetlink.c:4064
rtmsg_ifinfo_event net/core/rtnetlink.c:4107 [inline]
rtmsg_ifinfo_event net/core/rtnetlink.c:4097 [inline]
rtmsg_ifinfo+0x9f/0x1a0 net/core/rtnetlink.c:4116
register_netdevice+0x1710/0x1cb0 net/core/dev.c:10422
__ip_tunnel_create+0x4aa/0x690 net/ipv4/ip_tunnel.c:266
ip_tunnel_init_net+0x22a/0x780 net/ipv4/ip_tunnel.c:1160
ops_init+0xbc/0x650 net/core/net_namespace.c:139
setup_net+0x435/0xb40 net/core/net_namespace.c:343
page last free pid 1 tgid 1 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1093 [inline]
free_unref_page+0x64a/0xe40 mm/page_alloc.c:2588
free_contig_range+0xb6/0x1a0 mm/page_alloc.c:6642
destroy_args+0xa4e/0xe20 mm/debug_vm_pgtable.c:1017
debug_vm_pgtable+0x1705/0x3280 mm/debug_vm_pgtable.c:1397
do_one_initcall+0x12b/0x700 init/main.c:1267
do_initcall_level init/main.c:1329 [inline]
do_initcalls init/main.c:1345 [inline]
do_basic_setup init/main.c:1364 [inline]
kernel_init_freeable+0x69d/0xca0 init/main.c:1578
kernel_init+0x1c/0x2b0 init/main.c:1467
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Memory state around the buggy address:
ffff8880632dba80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc
ffff8880632dbb00: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
>ffff8880632dbb80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8880632dbc00: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc
ffff8880632dbc80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
==================================================================
BUG: KASAN: slab-use-after-free in skb_nfct include/linux/skbuff.h:4619 [inline]
BUG: KASAN: slab-use-after-free in skb_release_head_state+0x276/0x2b0 net/core/skbuff.c:1163
Read of size 8 at addr ffff8880632dbba8 by task syz-executor/5103
CPU: 0 PID: 5103 Comm: syz-executor Tainted: G B 6.10.0-rc6-syzkaller-00069-g795c58e4c7fc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
print_address_description mm/kasan/report.c:377 [inline]
print_report+0xc3/0x620 mm/kasan/report.c:488
kasan_report+0xd9/0x110 mm/kasan/report.c:601
skb_nfct include/linux/skbuff.h:4619 [inline]
skb_release_head_state+0x276/0x2b0 net/core/skbuff.c:1163
skb_release_all net/core/skbuff.c:1171 [inline]
__kfree_skb net/core/skbuff.c:1187 [inline]
kfree_skb_reason+0xed/0x210 net/core/skbuff.c:1223
kfree_skb include/linux/skbuff.h:1257 [inline]
__hci_req_sync+0x61d/0x980 net/bluetooth/hci_request.c:184
hci_req_sync+0x97/0xd0 net/bluetooth/hci_request.c:206
hci_dev_cmd+0x634/0x960 net/bluetooth/hci_core.c:787
hci_sock_ioctl+0x4f3/0x880 net/bluetooth/hci_sock.c:1150
sock_do_ioctl+0x119/0x280 net/socket.c:1222
sock_ioctl+0x22e/0x6c0 net/socket.c:1341
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl fs/ioctl.c:893 [inline]
__x64_sys_ioctl+0x196/0x220 fs/ioctl.c:893
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb7bb9757db
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007fffd72953f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fb7bb9757db
RDX: 00007fffd7295468 RSI: 00000000400448dd RDI: 0000000000000003
RBP: 000055558dc304a8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000005
R13: 0000000000000005 R14: 0000000000000009 R15: 0000000000000009
Allocated by task 4486:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:312 [inline]
__kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:338
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3940 [inline]
slab_alloc_node mm/slub.c:4002 [inline]
kmem_cache_alloc_noprof+0x121/0x2f0 mm/slub.c:4009
skb_clone+0x190/0x3f0 net/core/skbuff.c:2052
hci_send_cmd_sync net/bluetooth/hci_core.c:4123 [inline]
hci_cmd_work+0x66a/0x710 net/bluetooth/hci_core.c:4143
process_one_work+0x9c8/0x1b40 kernel/workqueue.c:3248
process_scheduled_works kernel/workqueue.c:3329 [inline]
worker_thread+0x6c8/0xf30 kernel/workqueue.c:3409
kthread+0x2c4/0x3a0 kernel/kthread.c:389
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Freed by task 4486:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579
poison_slab_object+0xf7/0x160 mm/kasan/common.c:240
__kasan_slab_free+0x32/0x50 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2196 [inline]
slab_free mm/slub.c:4438 [inline]
kmem_cache_free+0x12f/0x3a0 mm/slub.c:4513
kfree_skbmem+0x10e/0x200 net/core/skbuff.c:1131
__kfree_skb net/core/skbuff.c:1188 [inline]
kfree_skb_reason+0x138/0x210 net/core/skbuff.c:1223
kfree_skb include/linux/skbuff.h:1257 [inline]
hci_req_sync_complete+0x16c/0x270 net/bluetooth/hci_request.c:109
hci_event_packet+0x966/0x1170 net/bluetooth/hci_event.c:7479
hci_rx_work+0x2c4/0x1610 net/bluetooth/hci_core.c:4074
process_one_work+0x9c8/0x1b40 kernel/workqueue.c:3248
process_scheduled_works kernel/workqueue.c:3329 [inline]
worker_thread+0x6c8/0xf30 kernel/workqueue.c:3409
kthread+0x2c4/0x3a0 kernel/kthread.c:389
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
The buggy address belongs to the object at ffff8880632dbb40
which belongs to the cache skbuff_head_cache of size 240
The buggy address is located 104 bytes inside of
freed 240-byte region [ffff8880632dbb40, ffff8880632dbc30)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x632db
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffefff(slab)
raw: 00fff00000000000 ffff888018edc780 dead000000000122 0000000000000000
raw: 0000000000000000 00000000000c000c 00000001ffffefff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 5097, tgid 5097 (syz-executor), ts 110413636297, free_ts 37146400838
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1473
prep_new_page mm/page_alloc.c:1481 [inline]
get_page_from_freelist+0x1353/0x2e50 mm/page_alloc.c:3425
__alloc_pages_noprof+0x22b/0x2460 mm/page_alloc.c:4683
__alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
alloc_slab_page+0x56/0x110 mm/slub.c:2265
allocate_slab mm/slub.c:2428 [inline]
new_slab+0x84/0x260 mm/slub.c:2481
___slab_alloc+0xdac/0x1870 mm/slub.c:3667
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3757
__slab_alloc_node mm/slub.c:3810 [inline]
slab_alloc_node mm/slub.c:3990 [inline]
kmem_cache_alloc_node_noprof+0xed/0x310 mm/slub.c:4045
__alloc_skb+0x2b1/0x380 net/core/skbuff.c:656
alloc_skb include/linux/skbuff.h:1308 [inline]
nlmsg_new include/net/netlink.h:1015 [inline]
rtmsg_ifinfo_build_skb+0x81/0x280 net/core/rtnetlink.c:4064
rtmsg_ifinfo_event net/core/rtnetlink.c:4107 [inline]
rtmsg_ifinfo_event net/core/rtnetlink.c:4097 [inline]
rtmsg_ifinfo+0x9f/0x1a0 net/core/rtnetlink.c:4116
register_netdevice+0x1710/0x1cb0 net/core/dev.c:10422
__ip_tunnel_create+0x4aa/0x690 net/ipv4/ip_tunnel.c:266
ip_tunnel_init_net+0x22a/0x780 net/ipv4/ip_tunnel.c:1160
ops_init+0xbc/0x650 net/core/net_namespace.c:139
setup_net+0x435/0xb40 net/core/net_namespace.c:343
page last free pid 1 tgid 1 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1093 [inline]
free_unref_page+0x64a/0xe40 mm/page_alloc.c:2588
free_contig_range+0xb6/0x1a0 mm/page_alloc.c:6642
destroy_args+0xa4e/0xe20 mm/debug_vm_pgtable.c:1017
debug_vm_pgtable+0x1705/0x3280 mm/debug_vm_pgtable.c:1397
do_one_initcall+0x12b/0x700 init/main.c:1267
do_initcall_level init/main.c:1329 [inline]
do_initcalls init/main.c:1345 [inline]
do_basic_setup init/main.c:1364 [inline]
kernel_init_freeable+0x69d/0xca0 init/main.c:1578
kernel_init+0x1c/0x2b0 init/main.c:1467
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Memory state around the buggy address:
ffff8880632dba80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc
ffff8880632dbb00: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
>ffff8880632dbb80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8880632dbc00: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc
ffff8880632dbc80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
==================================================================
BUG: KASAN: slab-use-after-free in skb_ext_put include/linux/skbuff.h:4688 [inline]
BUG: KASAN: slab-use-after-free in skb_release_head_state+0x26c/0x2b0 net/core/skbuff.c:1165
Read of size 1 at addr ffff8880632dbbbf by task syz-executor/5103
CPU: 1 PID: 5103 Comm: syz-executor Tainted: G B 6.10.0-rc6-syzkaller-00069-g795c58e4c7fc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
print_address_description mm/kasan/report.c:377 [inline]
print_report+0xc3/0x620 mm/kasan/report.c:488
kasan_report+0xd9/0x110 mm/kasan/report.c:601
skb_ext_put include/linux/skbuff.h:4688 [inline]
skb_release_head_state+0x26c/0x2b0 net/core/skbuff.c:1165
skb_release_all net/core/skbuff.c:1171 [inline]
__kfree_skb net/core/skbuff.c:1187 [inline]
kfree_skb_reason+0xed/0x210 net/core/skbuff.c:1223
kfree_skb include/linux/skbuff.h:1257 [inline]
__hci_req_sync+0x61d/0x980 net/bluetooth/hci_request.c:184
hci_req_sync+0x97/0xd0 net/bluetooth/hci_request.c:206
hci_dev_cmd+0x634/0x960 net/bluetooth/hci_core.c:787
hci_sock_ioctl+0x4f3/0x880 net/bluetooth/hci_sock.c:1150
sock_do_ioctl+0x119/0x280 net/socket.c:1222
sock_ioctl+0x22e/0x6c0 net/socket.c:1341
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl fs/ioctl.c:893 [inline]
__x64_sys_ioctl+0x196/0x220 fs/ioctl.c:893
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb7bb9757db
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007fffd72953f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fb7bb9757db
RDX: 00007fffd7295468 RSI: 00000000400448dd RDI: 0000000000000003
RBP: 000055558dc304a8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000005
R13: 0000000000000005 R14: 0000000000000009 R15: 0000000000000009
Allocated by task 4486:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:312 [inline]
__kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:338
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3940 [inline]
slab_alloc_node mm/slub.c:4002 [inline]
kmem_cache_alloc_noprof+0x121/0x2f0 mm/slub.c:4009
skb_clone+0x190/0x3f0 net/core/skbuff.c:2052
hci_send_cmd_sync net/bluetooth/hci_core.c:4123 [inline]
hci_cmd_work+0x66a/0x710 net/bluetooth/hci_core.c:4143
process_one_work+0x9c8/0x1b40 kernel/workqueue.c:3248
process_scheduled_works kernel/workqueue.c:3329 [inline]
worker_thread+0x6c8/0xf30 kernel/workqueue.c:3409
kthread+0x2c4/0x3a0 kernel/kthread.c:389
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Freed by task 4486:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579
poison_slab_object+0xf7/0x160 mm/kasan/common.c:240
__kasan_slab_free+0x32/0x50 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2196 [inline]
slab_free mm/slub.c:4438 [inline]
kmem_cache_free+0x12f/0x3a0 mm/slub.c:4513
kfree_skbmem+0x10e/0x200 net/core/skbuff.c:1131
__kfree_skb net/core/skbuff.c:1188 [inline]
kfree_skb_reason+0x138/0x210 net/core/skbuff.c:1223
kfree_skb include/linux/skbuff.h:1257 [inline]
hci_req_sync_complete+0x16c/0x270 net/bluetooth/hci_request.c:109
hci_event_packet+0x966/0x1170 net/bluetooth/hci_event.c:7479
hci_rx_work+0x2c4/0x1610 net/bluetooth/hci_core.c:4074
process_one_work+0x9c8/0x1b40 kernel/workqueue.c:3248
process_scheduled_works kernel/workqueue.c:3329 [inline]
worker_thread+0x6c8/0xf30 kernel/workqueue.c:3409
kthread+0x2c4/0x3a0 kernel/kthread.c:389
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
The buggy address belongs to the object at ffff8880632dbb40
which belongs to the cache skbuff_head_cache of size 240
The buggy address is located 127 bytes inside of
freed 240-byte region [ffff8880632dbb40, ffff8880632dbc30)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x632db
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffefff(slab)
raw: 00fff00000000000 ffff888018edc780 dead000000000122 0000000000000000
raw: 0000000000000000 00000000000c000c 00000001ffffefff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 5097, tgid 5097 (syz-executor), ts 110413636297, free_ts 37146400838
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1473
prep_new_page mm/page_alloc.c:1481 [inline]
get_page_from_freelist+0x1353/0x2e50 mm/page_alloc.c:3425
__alloc_pages_noprof+0x22b/0x2460 mm/page_alloc.c:4683
__alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
alloc_slab_page+0x56/0x110 mm/slub.c:2265
allocate_slab mm/slub.c:2428 [inline]
new_slab+0x84/0x260 mm/slub.c:2481
___slab_alloc+0xdac/0x1870 mm/slub.c:3667
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3757
__slab_alloc_node mm/slub.c:3810 [inline]
slab_alloc_node mm/slub.c:3990 [inline]
kmem_cache_alloc_node_noprof+0xed/0x310 mm/slub.c:4045
__alloc_skb+0x2b1/0x380 net/core/skbuff.c:656
alloc_skb include/linux/skbuff.h:1308 [inline]
nlmsg_new include/net/netlink.h:1015 [inline]
rtmsg_ifinfo_build_skb+0x81/0x280 net/core/rtnetlink.c:4064
rtmsg_ifinfo_event net/core/rtnetlink.c:4107 [inline]
rtmsg_ifinfo_event net/core/rtnetlink.c:4097 [inline]
rtmsg_ifinfo+0x9f/0x1a0 net/core/rtnetlink.c:4116
register_netdevice+0x1710/0x1cb0 net/core/dev.c:10422
__ip_tunnel_create+0x4aa/0x690 net/ipv4/ip_tunnel.c:266
ip_tunnel_init_net+0x22a/0x780 net/ipv4/ip_tunnel.c:1160
ops_init+0xbc/0x650 net/core/net_namespace.c:139
setup_net+0x435/0xb40 net/core/net_namespace.c:343
page last free pid 1 tgid 1 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1093 [inline]
free_unref_page+0x64a/0xe40 mm/page_alloc.c:2588
free_contig_range+0xb6/0x1a0 mm/page_alloc.c:6642
destroy_args+0xa4e/0xe20 mm/debug_vm_pgtable.c:1017
debug_vm_pgtable+0x1705/0x3280 mm/debug_vm_pgtable.c:1397
do_one_initcall+0x12b/0x700 init/main.c:1267
do_initcall_level init/main.c:1329 [inline]
do_initcalls init/main.c:1345 [inline]
do_basic_setup init/main.c:1364 [inline]
kernel_init_freeable+0x69d/0xca0 init/main.c:1578
kernel_init+0x1c/0x2b0 init/main.c:1467
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Memory state around the buggy address:
ffff8880632dba80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc
ffff8880632dbb00: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
>ffff8880632dbb80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8880632dbc00: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc
ffff8880632dbc80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
==================================================================
BUG: KASAN: slab-use-after-free in skb_release_all net/core/skbuff.c:1172 [inline]
BUG: KASAN: slab-use-after-free in __kfree_skb net/core/skbuff.c:1187 [inline]
BUG: KASAN: slab-use-after-free in kfree_skb_reason+0x1ff/0x210 net/core/skbuff.c:1223
Read of size 8 at addr ffff8880632dbc10 by task syz-executor/5103
CPU: 0 PID: 5103 Comm: syz-executor Tainted: G B 6.10.0-rc6-syzkaller-00069-g795c58e4c7fc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
print_address_description mm/kasan/report.c:377 [inline]
print_report+0xc3/0x620 mm/kasan/report.c:488
kasan_report+0xd9/0x110 mm/kasan/report.c:601
skb_release_all net/core/skbuff.c:1172 [inline]
__kfree_skb net/core/skbuff.c:1187 [inline]
kfree_skb_reason+0x1ff/0x210 net/core/skbuff.c:1223
kfree_skb include/linux/skbuff.h:1257 [inline]
__hci_req_sync+0x61d/0x980 net/bluetooth/hci_request.c:184
hci_req_sync+0x97/0xd0 net/bluetooth/hci_request.c:206
hci_dev_cmd+0x634/0x960 net/bluetooth/hci_core.c:787
hci_sock_ioctl+0x4f3/0x880 net/bluetooth/hci_sock.c:1150
sock_do_ioctl+0x119/0x280 net/socket.c:1222
sock_ioctl+0x22e/0x6c0 net/socket.c:1341
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl fs/ioctl.c:893 [inline]
__x64_sys_ioctl+0x196/0x220 fs/ioctl.c:893
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb7bb9757db
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007fffd72953f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fb7bb9757db
RDX: 00007fffd7295468 RSI: 00000000400448dd RDI: 0000000000000003
RBP: 000055558dc304a8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000005
R13: 0000000000000005 R14: 0000000000000009 R15: 0000000000000009
Allocated by task 4486:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:312 [inline]
__kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:338
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3940 [inline]
slab_alloc_node mm/slub.c:4002 [inline]
kmem_cache_alloc_noprof+0x121/0x2f0 mm/slub.c:4009
skb_clone+0x190/0x3f0 net/core/skbuff.c:2052
hci_send_cmd_sync net/bluetooth/hci_core.c:4123 [inline]
hci_cmd_work+0x66a/0x710 net/bluetooth/hci_core.c:4143
process_one_work+0x9c8/0x1b40 kernel/workqueue.c:3248
process_scheduled_works kernel/workqueue.c:3329 [inline]
worker_thread+0x6c8/0xf30 kernel/workqueue.c:3409
kthread+0x2c4/0x3a0 kernel/kthread.c:389
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Freed by task 4486:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579
poison_slab_object+0xf7/0x160 mm/kasan/common.c:240
__kasan_slab_free+0x32/0x50 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2196 [inline]
slab_free mm/slub.c:4438 [inline]
kmem_cache_free+0x12f/0x3a0 mm/slub.c:4513
kfree_skbmem+0x10e/0x200 net/core/skbuff.c:1131
__kfree_skb net/core/skbuff.c:1188 [inline]
kfree_skb_reason+0x138/0x210 net/core/skbuff.c:1223
kfree_skb include/linux/skbuff.h:1257 [inline]
hci_req_sync_complete+0x16c/0x270 net/bluetooth/hci_request.c:109
hci_event_packet+0x966/0x1170 net/bluetooth/hci_event.c:7479
hci_rx_work+0x2c4/0x1610 net/bluetooth/hci_core.c:4074
process_one_work+0x9c8/0x1b40 kernel/workqueue.c:3248
process_scheduled_works kernel/workqueue.c:3329 [inline]
worker_thread+0x6c8/0xf30 kernel/workqueue.c:3409
kthread+0x2c4/0x3a0 kernel/kthread.c:389
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
The buggy address belongs to the object at ffff8880632dbb40
which belongs to the cache skbuff_head_cache of size 240
The buggy address is located 208 bytes inside of
freed 240-byte region [ffff8880632dbb40, ffff8880632dbc30)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x632db
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffefff(slab)
raw: 00fff00000000000 ffff888018edc780 dead000000000122 0000000000000000
raw: 0000000000000000 00000000000c000c 00000001ffffefff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 5097, tgid 5097 (syz-executor), ts 110413636297, free_ts 37146400838
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1473
prep_new_page mm/page_alloc.c:1481 [inline]
get_page_from_freelist+0x1353/0x2e50 mm/page_alloc.c:3425
__alloc_pages_noprof+0x22b/0x2460 mm/page_alloc.c:4683
__alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
alloc_slab_page+0x56/0x110 mm/slub.c:2265
allocate_slab mm/slub.c:2428 [inline]
new_slab+0x84/0x260 mm/slub.c:2481
___slab_alloc+0xdac/0x1870 mm/slub.c:3667
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3757
__slab_alloc_node mm/slub.c:3810 [inline]
slab_alloc_node mm/slub.c:3990 [inline]
kmem_cache_alloc_node_noprof+0xed/0x310 mm/slub.c:4045
__alloc_skb+0x2b1/0x380 net/core/skbuff.c:656
alloc_skb include/linux/skbuff.h:1308 [inline]
nlmsg_new include/net/netlink.h:1015 [inline]
rtmsg_ifinfo_build_skb+0x81/0x280 net/core/rtnetlink.c:4064
rtmsg_ifinfo_event net/core/rtnetlink.c:4107 [inline]
rtmsg_ifinfo_event net/core/rtnetlink.c:4097 [inline]
rtmsg_ifinfo+0x9f/0x1a0 net/core/rtnetlink.c:4116
register_netdevice+0x1710/0x1cb0 net/core/dev.c:10422
__ip_tunnel_create+0x4aa/0x690 net/ipv4/ip_tunnel.c:266
ip_tunnel_init_net+0x22a/0x780 net/ipv4/ip_tunnel.c:1160
ops_init+0xbc/0x650 net/core/net_namespace.c:139
setup_net+0x435/0xb40 net/core/net_namespace.c:343
page last free pid 1 tgid 1 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1093 [inline]
free_unref_page+0x64a/0xe40 mm/page_alloc.c:2588
free_contig_range+0xb6/0x1a0 mm/page_alloc.c:6642
destroy_args+0xa4e/0xe20 mm/debug_vm_pgtable.c:1017
debug_vm_pgtable+0x1705/0x3280 mm/debug_vm_pgtable.c:1397
do_one_initcall+0x12b/0x700 init/main.c:1267
do_initcall_level init/main.c:1329 [inline]
do_initcalls init/main.c:1345 [inline]
do_basic_setup init/main.c:1364 [inline]
kernel_init_freeable+0x69d/0xca0 init/main.c:1578
kernel_init+0x1c/0x2b0 init/main.c:1467
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Memory state around the buggy address:
ffff8880632dbb00: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
ffff8880632dbb80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880632dbc00: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc
^
ffff8880632dbc80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffff8880632dbd00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc
==================================================================
==================================================================
BUG: KASAN: slab-use-after-free in skb_end_pointer include/linux/skbuff.h:1640 [inline]
BUG: KASAN: slab-use-after-free in skb_release_data+0x8c6/0x980 net/core/skbuff.c:1087
Read of size 8 at addr ffff8880632dbc10 by task syz-executor/5103
CPU: 0 PID: 5103 Comm: syz-executor Tainted: G B 6.10.0-rc6-syzkaller-00069-g795c58e4c7fc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
print_address_description mm/kasan/report.c:377 [inline]
print_report+0xc3/0x620 mm/kasan/report.c:488
kasan_report+0xd9/0x110 mm/kasan/report.c:601
skb_end_pointer include/linux/skbuff.h:1640 [inline]
skb_release_data+0x8c6/0x980 net/core/skbuff.c:1087
skb_release_all net/core/skbuff.c:1173 [inline]
__kfree_skb net/core/skbuff.c:1187 [inline]
kfree_skb_reason+0x12b/0x210 net/core/skbuff.c:1223
kfree_skb include/linux/skbuff.h:1257 [inline]
__hci_req_sync+0x61d/0x980 net/bluetooth/hci_request.c:184
hci_req_sync+0x97/0xd0 net/bluetooth/hci_request.c:206
hci_dev_cmd+0x634/0x960 net/bluetooth/hci_core.c:787
hci_sock_ioctl+0x4f3/0x880 net/bluetooth/hci_sock.c:1150
sock_do_ioctl+0x119/0x280 net/socket.c:1222
sock_ioctl+0x22e/0x6c0 net/socket.c:1341
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl fs/ioctl.c:893 [inline]
__x64_sys_ioctl+0x196/0x220 fs/ioctl.c:893
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb7bb9757db
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007fffd72953f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fb7bb9757db
RDX: 00007fffd7295468 RSI: 00000000400448dd RDI: 0000000000000003
RBP: 000055558dc304a8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000005
R13: 0000000000000005 R14: 0000000000000009 R15: 0000000000000009
Allocated by task 4486:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:312 [inline]
__kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:338
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3940 [inline]
slab_alloc_node mm/slub.c:4002 [inline]
kmem_cache_alloc_noprof+0x121/0x2f0 mm/slub.c:4009
skb_clone+0x190/0x3f0 net/core/skbuff.c:2052
hci_send_cmd_sync net/bluetooth/hci_core.c:4123 [inline]
hci_cmd_work+0x66a/0x710 net/bluetooth/hci_core.c:4143
process_one_work+0x9c8/0x1b40 kernel/workqueue.c:3248
process_scheduled_works kernel/workqueue.c:3329 [inline]
worker_thread+0x6c8/0xf30 kernel/workqueue.c:3409
kthread+0x2c4/0x3a0 kernel/kthread.c:389
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Freed by task 4486:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579
poison_slab_object+0xf7/0x160 mm/kasan/common.c:240
__kasan_slab_free+0x32/0x50 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2196 [inline]
slab_free mm/slub.c:4438 [inline]
kmem_cache_free+0x12f/0x3a0 mm/slub.c:4513
kfree_skbmem+0x10e/0x200 net/core/skbuff.c:1131
__kfree_skb net/core/skbuff.c:1188 [inline]
kfree_skb_reason+0x138/0x210 net/core/skbuff.c:1223
kfree_skb include/linux/skbuff.h:1257 [inline]
hci_req_sync_complete+0x16c/0x270 net/bluetooth/hci_request.c:109
hci_event_packet+0x966/0x1170 net/bluetooth/hci_event.c:7479
hci_rx_work+0x2c4/0x1610 net/bluetooth/hci_core.c:4074
process_one_work+0x9c8/0x1b40 kernel/workqueue.c:3248
process_scheduled_works kernel/workqueue.c:3329 [inline]
worker_thread+0x6c8/0xf30 kernel/workqueue.c:3409
kthread+0x2c4/0x3a0 kernel/kthread.c:389
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
The buggy address belongs to the object at ffff8880632dbb40
which belongs to the cache skbuff_head_cache of size 240
The buggy address is located 208 bytes inside of
freed 240-byte region [ffff8880632dbb40, ffff8880632dbc30)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x632db
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffefff(slab)
raw: 00fff00000000000 ffff888018edc780 dead000000000122 0000000000000000
raw: 0000000000000000 00000000000c000c 00000001ffffefff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 5097, tgid 5097 (syz-executor), ts 110413636297, free_ts 37146400838
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1473
prep_new_page mm/page_alloc.c:1481 [inline]
get_page_from_freelist+0x1353/0x2e50 mm/page_alloc.c:3425
__alloc_pages_noprof+0x22b/0x2460 mm/page_alloc.c:4683
__alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
alloc_slab_page+0x56/0x110 mm/slub.c:2265
allocate_slab mm/slub.c:2428 [inline]
new_slab+0x84/0x260 mm/slub.c:2481
___slab_alloc+0xdac/0x1870 mm/slub.c:3667
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3757
__slab_alloc_node mm/slub.c:3810 [inline]
slab_alloc_node mm/slub.c:3990 [inline]
kmem_cache_alloc_node_noprof+0xed/0x310 mm/slub.c:4045
__alloc_skb+0x2b1/0x380 net/core/skbuff.c:656
alloc_skb include/linux/skbuff.h:1308 [inline]
nlmsg_new include/net/netlink.h:1015 [inline]
rtmsg_ifinfo_build_skb+0x81/0x280 net/core/rtnetlink.c:4064
rtmsg_ifinfo_event net/core/rtnetlink.c:4107 [inline]
rtmsg_ifinfo_event net/core/rtnetlink.c:4097 [inline]
rtmsg_ifinfo+0x9f/0x1a0 net/core/rtnetlink.c:4116
register_netdevice+0x1710/0x1cb0 net/core/dev.c:10422
__ip_tunnel_create+0x4aa/0x690 net/ipv4/ip_tunnel.c:266
ip_tunnel_init_net+0x22a/0x780 net/ipv4/ip_tunnel.c:1160
ops_init+0xbc/0x650 net/core/net_namespace.c:139
setup_net+0x435/0xb40 net/core/net_namespace.c:343
page last free pid 1 tgid 1 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1093 [inline]
free_unref_page+0x64a/0xe40 mm/page_alloc.c:2588
free_contig_range+0xb6/0x1a0 mm/page_alloc.c:6642
destroy_args+0xa4e/0xe20 mm/debug_vm_pgtable.c:1017
debug_vm_pgtable+0x1705/0x3280 mm/debug_vm_pgtable.c:1397
do_one_initcall+0x12b/0x700 init/main.c:1267
do_initcall_level init/main.c:1329 [inline]
do_initcalls init/main.c:1345 [inline]
do_basic_setup init/main.c:1364 [inline]
kernel_init_freeable+0x69d/0xca0 init/main.c:1578
kernel_init+0x1c/0x2b0 init/main.c:1467
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Memory state around the buggy address:
ffff8880632dbb00: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
ffff8880632dbb80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880632dbc00: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc
^
ffff8880632dbc80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffff8880632dbd00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc
==================================================================
==================================================================
BUG: KASAN: slab-use-after-free in skb_end_pointer include/linux/skbuff.h:1640 [inline]
BUG: KASAN: slab-use-after-free in skb_release_data+0x813/0x980 net/core/skbuff.c:1087
Read of size 4 at addr ffff8880632dbc0c by task syz-executor/5103
CPU: 0 PID: 5103 Comm: syz-executor Tainted: G B 6.10.0-rc6-syzkaller-00069-g795c58e4c7fc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
print_address_description mm/kasan/report.c:377 [inline]
print_report+0xc3/0x620 mm/kasan/report.c:488
kasan_report+0xd9/0x110 mm/kasan/report.c:601
skb_end_pointer include/linux/skbuff.h:1640 [inline]
skb_release_data+0x813/0x980 net/core/skbuff.c:1087
skb_release_all net/core/skbuff.c:1173 [inline]
__kfree_skb net/core/skbuff.c:1187 [inline]
kfree_skb_reason+0x12b/0x210 net/core/skbuff.c:1223
kfree_skb include/linux/skbuff.h:1257 [inline]
__hci_req_sync+0x61d/0x980 net/bluetooth/hci_request.c:184
hci_req_sync+0x97/0xd0 net/bluetooth/hci_request.c:206
hci_dev_cmd+0x634/0x960 net/bluetooth/hci_core.c:787
hci_sock_ioctl+0x4f3/0x880 net/bluetooth/hci_sock.c:1150
sock_do_ioctl+0x119/0x280 net/socket.c:1222
sock_ioctl+0x22e/0x6c0 net/socket.c:1341
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl fs/ioctl.c:893 [inline]
__x64_sys_ioctl+0x196/0x220 fs/ioctl.c:893
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb7bb9757db
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007fffd72953f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fb7bb9757db
RDX: 00007fffd7295468 RSI: 00000000400448dd RDI: 0000000000000003
RBP: 000055558dc304a8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000005
R13: 0000000000000005 R14: 0000000000000009 R15: 0000000000000009
Allocated by task 4486:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:312 [inline]
__kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:338
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3940 [inline]
slab_alloc_node mm/slub.c:4002 [inline]
kmem_cache_alloc_noprof+0x121/0x2f0 mm/slub.c:4009
skb_clone+0x190/0x3f0 net/core/skbuff.c:2052
hci_send_cmd_sync net/bluetooth/hci_core.c:4123 [inline]
hci_cmd_work+0x66a/0x710 net/bluetooth/hci_core.c:4143
process_one_work+0x9c8/0x1b40 kernel/workqueue.c:3248
process_scheduled_works kernel/workqueue.c:3329 [inline]
worker_thread+0x6c8/0xf30 kernel/workqueue.c:3409
kthread+0x2c4/0x3a0 kernel/kthread.c:389
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Freed by task 4486:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579
poison_slab_object+0xf7/0x160 mm/kasan/common.c:240
__kasan_slab_free+0x32/0x50 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2196 [inline]
slab_free mm/slub.c:4438 [inline]
kmem_cache_free+0x12f/0x3a0 mm/slub.c:4513
kfree_skbmem+0x10e/0x200 net/core/skbuff.c:1131
__kfree_skb net/core/skbuff.c:1188 [inline]
kfree_skb_reason+0x138/0x210 net/core/skbuff.c:1223
kfree_skb include/linux/skbuff.h:1257 [inline]
hci_req_sync_complete+0x16c/0x270 net/bluetooth/hci_request.c:109
hci_event_packet+0x966/0x1170 net/bluetooth/hci_event.c:7479
hci_rx_work+0x2c4/0x1610 net/bluetooth/hci_core.c:4074
process_one_work+0x9c8/0x1b40 kernel/workqueue.c:3248
process_scheduled_works kernel/workqueue.c:3329 [inline]
worker_thread+0x6c8/0xf30 kernel/workqueue.c:3409
kthread+0x2c4/0x3a0 kernel/kthread.c:389
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
The buggy address belongs to the object at ffff8880632dbb40
which belongs to the cache skbuff_head_cache of size 240
The buggy address is located 204 bytes inside of
freed 240-byte region [ffff8880632dbb40, ffff8880632dbc30)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x632db
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffefff(slab)
raw: 00fff00000000000 ffff888018edc780 dead000000000122 0000000000000000
raw: 0000000000000000 00000000000c000c 00000001ffffefff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 5097, tgid 5097 (syz-executor), ts 110413636297, free_ts 37146400838
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1473
prep_new_page mm/page_alloc.c:1481 [inline]
get_page_from_freelist+0x1353/0x2e50 mm/page_alloc.c:3425
__alloc_pages_noprof+0x22b/0x2460 mm/page_alloc.c:4683
__alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
alloc_slab_page+0x56/0x110 mm/slub.c:2265
allocate_slab mm/slub.c:2428 [inline]
new_slab+0x84/0x260 mm/slub.c:2481
___slab_alloc+0xdac/0x1870 mm/slub.c:3667
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3757
__slab_alloc_node mm/slub.c:3810 [inline]
slab_alloc_node mm/slub.c:3990 [inline]
kmem_cache_alloc_node_noprof+0xed/0x310 mm/slub.c:4045
__alloc_skb+0x2b1/0x380 net/core/skbuff.c:656
alloc_skb include/linux/skbuff.h:1308 [inline]
nlmsg_new include/net/netlink.h:1015 [inline]
rtmsg_ifinfo_build_skb+0x81/0x280 net/core/rtnetlink.c:4064
rtmsg_ifinfo_event net/core/rtnetlink.c:4107 [inline]
rtmsg_ifinfo_event net/core/rtnetlink.c:4097 [inline]
rtmsg_ifinfo+0x9f/0x1a0 net/core/rtnetlink.c:4116
register_netdevice+0x1710/0x1cb0 net/core/dev.c:10422
__ip_tunnel_create+0x4aa/0x690 net/ipv4/ip_tunnel.c:266
ip_tunnel_init_net+0x22a/0x780 net/ipv4/ip_tunnel.c:1160
ops_init+0xbc/0x650 net/core/net_namespace.c:139
setup_net+0x435/0xb40 net/core/net_namespace.c:343
page last free pid 1 tgid 1 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1093 [inline]
free_unref_page+0x64a/0xe40 mm/page_alloc.c:2588
free_contig_range+0xb6/0x1a0 mm/page_alloc.c:6642
destroy_args+0xa4e/0xe20 mm/debug_vm_pgtable.c:1017
debug_vm_pgtable+0x1705/0x3280 mm/debug_vm_pgtable.c:1397
do_one_initcall+0x12b/0x700 init/main.c:1267
do_initcall_level init/main.c:1329 [inline]
do_initcalls init/main.c:1345 [inline]
do_basic_setup init/main.c:1364 [inline]
kernel_init_freeable+0x69d/0xca0 init/main.c:1578
kernel_init+0x1c/0x2b0 init/main.c:1467
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Memory state around the buggy address:
ffff8880632dbb00: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
ffff8880632dbb80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880632dbc00: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc
^
ffff8880632dbc80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffff8880632dbd00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc
==================================================================
==================================================================
BUG: KASAN: slab-use-after-free in skb_data_unref include/linux/skbuff.h:1235 [inline]
BUG: KASAN: slab-use-after-free in skb_release_data+0x806/0x980 net/core/skbuff.c:1090
Read of size 1 at addr ffff8880632dbbbe by task syz-executor/5103
CPU: 0 PID: 5103 Comm: syz-executor Tainted: G B 6.10.0-rc6-syzkaller-00069-g795c58e4c7fc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
print_address_description mm/kasan/report.c:377 [inline]
print_report+0xc3/0x620 mm/kasan/report.c:488
kasan_report+0xd9/0x110 mm/kasan/report.c:601
skb_data_unref include/linux/skbuff.h:1235 [inline]
skb_release_data+0x806/0x980 net/core/skbuff.c:1090
skb_release_all net/core/skbuff.c:1173 [inline]
__kfree_skb net/core/skbuff.c:1187 [inline]
kfree_skb_reason+0x12b/0x210 net/core/skbuff.c:1223
kfree_skb include/linux/skbuff.h:1257 [inline]
__hci_req_sync+0x61d/0x980 net/bluetooth/hci_request.c:184
hci_req_sync+0x97/0xd0 net/bluetooth/hci_request.c:206
hci_dev_cmd+0x634/0x960 net/bluetooth/hci_core.c:787
hci_sock_ioctl+0x4f3/0x880 net/bluetooth/hci_sock.c:1150
sock_do_ioctl+0x119/0x280 net/socket.c:1222
sock_ioctl+0x22e/0x6c0 net/socket.c:1341
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl fs/ioctl.c:893 [inline]
__x64_sys_ioctl+0x196/0x220 fs/ioctl.c:893
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb7bb9757db
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007fffd72953f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fb7bb9757db
RDX: 00007fffd7295468 RSI: 00000000400448dd RDI: 0000000000000003
RBP: 000055558dc304a8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000005
R13: 0000000000000005 R14: 0000000000000009 R15: 0000000000000009
Allocated by task 4486:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:312 [inline]
__kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:338
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3940 [inline]
slab_alloc_node mm/slub.c:4002 [inline]
kmem_cache_alloc_noprof+0x121/0x2f0 mm/slub.c:4009
skb_clone+0x190/0x3f0 net/core/skbuff.c:2052
hci_send_cmd_sync net/bluetooth/hci_core.c:4123 [inline]
hci_cmd_work+0x66a/0x710 net/bluetooth/hci_core.c:4143
process_one_work+0x9c8/0x1b40 kernel/workqueue.c:3248
process_scheduled_works kernel/workqueue.c:3329 [inline]
worker_thread+0x6c8/0xf30 kernel/workqueue.c:3409
kthread+0x2c4/0x3a0 kernel/kthread.c:389
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Freed by task 4486:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579
poison_slab_object+0xf7/0x160 mm/kasan/common.c:240
__kasan_slab_free+0x32/0x50 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2196 [inline]
slab_free mm/slub.c:4438 [inline]
kmem_cache_free+0x12f/0x3a0 mm/slub.c:4513
kfree_skbmem+0x10e/0x200 net/core/skbuff.c:1131
__kfree_skb net/core/skbuff.c:1188 [inline]
kfree_skb_reason+0x138/0x210 net/core/skbuff.c:1223
kfree_skb include/linux/skbuff.h:1257 [inline]
hci_req_sync_complete+0x16c/0x270 net/bluetooth/hci_request.c:109
hci_event_packet+0x966/0x1170 net/bluetooth/hci_event.c:7479
hci_rx_work+0x2c4/0x1610 net/bluetooth/hci_core.c:4074
process_one_work+0x9c8/0x1b40 kernel/workqueue.c:3248
process_scheduled_works kernel/workqueue.c:3329 [inline]
worker_thread+0x6c8/0xf30 kernel/workqueue.c:3409
kthread+0x2c4/0x3a0 kernel/kthread.c:389
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
The buggy address belongs to the object at ffff8880632dbb40
which belongs to the cache skbuff_head_cache of size 240
The buggy address is located 126 bytes inside of
freed 240-byte region [ffff8880632dbb40, ffff8880632dbc30)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x632db
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffefff(slab)
raw: 00fff00000000000 ffff888018edc780 dead000000000122 0000000000000000
raw: 0000000000000000 00000000000c000c 00000001ffffefff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 5097, tgid 5097 (syz-executor), ts 110413636297, free_ts 37146400838
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1473
prep_new_page mm/page_alloc.c:1481 [inline]
get_page_from_freelist+0x1353/0x2e50 mm/page_alloc.c:3425
__alloc_pages_noprof+0x22b/0x2460 mm/page_alloc.c:4683
__alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
alloc_slab_page+0x56/0x110 mm/slub.c:2265
allocate_slab mm/slub.c:2428 [inline]
new_slab+0x84/0x260 mm/slub.c:2481
___slab_alloc+0xdac/0x1870 mm/slub.c:3667
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3757
__slab_alloc_node mm/slub.c:3810 [inline]
slab_alloc_node mm/slub.c:3990 [inline]
kmem_cache_alloc_node_noprof+0xed/0x310 mm/slub.c:4045
__alloc_skb+0x2b1/0x380 net/core/skbuff.c:656
alloc_skb include/linux/skbuff.h:1308 [inline]
nlmsg_new include/net/netlink.h:1015 [inline]
rtmsg_ifinfo_build_skb+0x81/0x280 net/core/rtnetlink.c:4064
rtmsg_ifinfo_event net/core/rtnetlink.c:4107 [inline]
rtmsg_ifinfo_event net/core/rtnetlink.c:4097 [inline]
rtmsg_ifinfo+0x9f/0x1a0 net/core/rtnetlink.c:4116
register_netdevice+0x1710/0x1cb0 net/core/dev.c:10422
__ip_tunnel_create+0x4aa/0x690 net/ipv4/ip_tunnel.c:266
ip_tunnel_init_net+0x22a/0x780 net/ipv4/ip_tunnel.c:1160
ops_init+0xbc/0x650 net/core/net_namespace.c:139
setup_net+0x435/0xb40 net/core/net_namespace.c:343
page last free pid 1 tgid 1 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1093 [inline]
free_unref_page+0x64a/0xe40 mm/page_alloc.c:2588
free_contig_range+0xb6/0x1a0 mm/page_alloc.c:6642
destroy_args+0xa4e/0xe20 mm/debug_vm_pgtable.c:1017
debug_vm_pgtable+0x1705/0x3280 mm/debug_vm_pgtable.c:1397
do_one_initcall+0x12b/0x700 init/main.c:1267
do_initcall_level init/main.c:1329 [inline]
do_initcalls init/main.c:1345 [inline]
do_basic_setup init/main.c:1364 [inline]
kernel_init_freeable+0x69d/0xca0 init/main.c:1578
kernel_init+0x1c/0x2b0 init/main.c:1467
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Memory state around the buggy address:
ffff8880632dba80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc
ffff8880632dbb00: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
>ffff8880632dbb80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8880632dbc00: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc
ffff8880632dbc80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
==================================================================
BUG: KASAN: slab-use-after-free in skb_end_pointer include/linux/skbuff.h:1640 [inline]
BUG: KASAN: slab-use-after-free in skb_zcopy include/linux/skbuff.h:1700 [inline]
BUG: KASAN: slab-use-after-free in skb_release_data+0x8dd/0x980 net/core/skbuff.c:1093
Read of size 8 at addr ffff8880632dbc10 by task syz-executor/5103
CPU: 0 PID: 5103 Comm: syz-executor Tainted: G B 6.10.0-rc6-syzkaller-00069-g795c58e4c7fc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
print_address_description mm/kasan/report.c:377 [inline]
print_report+0xc3/0x620 mm/kasan/report.c:488
kasan_report+0xd9/0x110 mm/kasan/report.c:601
skb_end_pointer include/linux/skbuff.h:1640 [inline]
skb_zcopy include/linux/skbuff.h:1700 [inline]
skb_release_data+0x8dd/0x980 net/core/skbuff.c:1093
skb_release_all net/core/skbuff.c:1173 [inline]
__kfree_skb net/core/skbuff.c:1187 [inline]
kfree_skb_reason+0x12b/0x210 net/core/skbuff.c:1223
kfree_skb include/linux/skbuff.h:1257 [inline]
__hci_req_sync+0x61d/0x980 net/bluetooth/hci_request.c:184
hci_req_sync+0x97/0xd0 net/bluetooth/hci_request.c:206
hci_dev_cmd+0x634/0x960 net/bluetooth/hci_core.c:787
hci_sock_ioctl+0x4f3/0x880 net/bluetooth/hci_sock.c:1150
sock_do_ioctl+0x119/0x280 net/socket.c:1222
sock_ioctl+0x22e/0x6c0 net/socket.c:1341
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl fs/ioctl.c:893 [inline]
__x64_sys_ioctl+0x196/0x220 fs/ioctl.c:893
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb7bb9757db
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007fffd72953f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fb7bb9757db
RDX: 00007fffd7295468 RSI: 00000000400448dd RDI: 0000000000000003
RBP: 000055558dc304a8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000005
R13: 0000000000000005 R14: 0000000000000009 R15: 0000000000000009
Allocated by task 4486:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:312 [inline]
__kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:338
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3940 [inline]
slab_alloc_node mm/slub.c:4002 [inline]
kmem_cache_alloc_noprof+0x121/0x2f0 mm/slub.c:4009
skb_clone+0x190/0x3f0 net/core/skbuff.c:2052
hci_send_cmd_sync net/bluetooth/hci_core.c:4123 [inline]
hci_cmd_work+0x66a/0x710 net/bluetooth/hci_core.c:4143
process_one_work+0x9c8/0x1b40 kernel/workqueue.c:3248
process_scheduled_works kernel/workqueue.c:3329 [inline]
worker_thread+0x6c8/0xf30 kernel/workqueue.c:3409
kthread+0x2c4/0x3a0 kernel/kthread.c:389
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Freed by task 4486:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579
poison_slab_object+0xf7/0x160 mm/kasan/common.c:240
__kasan_slab_free+0x32/0x50 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2196 [inline]
slab_free mm/slub.c:4438 [inline]
kmem_cache_free+0x12f/0x3a0 mm/slub.c:4513
kfree_skbmem+0x10e/0x200 net/core/skbuff.c:1131
__kfree_skb net/core/skbuff.c:1188 [inline]
kfree_skb_reason+0x138/0x210 net/core/skbuff.c:1223
kfree_skb include/linux/skbuff.h:1257 [inline]
hci_req_sync_complete+0x16c/0x270 net/bluetooth/hci_request.c:109
hci_event_packet+0x966/0x1170 net/bluetooth/hci_event.c:7479
hci_rx_work+0x2c4/0x1610 net/bluetooth/hci_core.c:4074
process_one_work+0x9c8/0x1b40 kernel/workqueue.c:3248
process_scheduled_works kernel/workqueue.c:3329 [inline]
worker_thread+0x6c8/0xf30 kernel/workqueue.c:3409
kthread+0x2c4/0x3a0 kernel/kthread.c:389
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
The buggy address belongs to the object at ffff8880632dbb40
which belongs to the cache skbuff_head_cache of size 240
The buggy address is located 208 bytes inside of
freed 240-byte region [ffff8880632dbb40, ffff8880632dbc30)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x632db
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffefff(slab)
raw: 00fff00000000000 ffff888018edc780 dead000000000122 0000000000000000
raw: 0000000000000000 00000000000c000c 00000001ffffefff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 5097, tgid 5097 (syz-executor), ts 110413636297, free_ts 37146400838
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1473
prep_new_page mm/page_alloc.c:1481 [inline]
get_page_from_freelist+0x1353/0x2e50 mm/page_alloc.c:3425
__alloc_pages_noprof+0x22b/0x2460 mm/page_alloc.c:4683
__alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
alloc_slab_page+0x56/0x110 mm/slub.c:2265
allocate_slab mm/slub.c:2428 [inline]
new_slab+0x84/0x260 mm/slub.c:2481
___slab_alloc+0xdac/0x1870 mm/slub.c:3667
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3757
__slab_alloc_node mm/slub.c:3810 [inline]
slab_alloc_node mm/slub.c:3990 [inline]
kmem_cache_alloc_node_noprof+0xed/0x310 mm/slub.c:4045
__alloc_skb+0x2b1/0x380 net/core/skbuff.c:656
alloc_skb include/linux/skbuff.h:1308 [inline]
nlmsg_new include/net/netlink.h:1015 [inline]
rtmsg_ifinfo_build_skb+0x81/0x280 net/core/rtnetlink.c:4064
rtmsg_ifinfo_event net/core/rtnetlink.c:4107 [inline]
rtmsg_ifinfo_event net/core/rtnetlink.c:4097 [inline]
rtmsg_ifinfo+0x9f/0x1a0 net/core/rtnetlink.c:4116
register_netdevice+0x1710/0x1cb0 net/core/dev.c:10422
__ip_tunnel_create+0x4aa/0x690 net/ipv4/ip_tunnel.c:266
ip_tunnel_init_net+0x22a/0x780 net/ipv4/ip_tunnel.c:1160
ops_init+0xbc/0x650 net/core/net_namespace.c:139
setup_net+0x435/0xb40 net/core/net_namespace.c:343
page last free pid 1 tgid 1 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1093 [inline]
free_unref_page+0x64a/0xe40 mm/page_alloc.c:2588
free_contig_range+0xb6/0x1a0 mm/page_alloc.c:6642
destroy_args+0xa4e/0xe20 mm/debug_vm_pgtable.c:1017
debug_vm_pgtable+0x1705/0x3280 mm/debug_vm_pgtable.c:1397
do_one_initcall+0x12b/0x700 init/main.c:1267
do_initcall_level init/main.c:1329 [inline]
do_initcalls init/main.c:1345 [inline]
do_basic_setup init/main.c:1364 [inline]
kernel_init_freeable+0x69d/0xca0 init/main.c:1578
kernel_init+0x1c/0x2b0 init/main.c:1467
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Memory state around the buggy address:
ffff8880632dbb00: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
ffff8880632dbb80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880632dbc00: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc
^
ffff8880632dbc80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffff8880632dbd00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc
==================================================================
==================================================================
BUG: KASAN: slab-use-after-free in skb_end_pointer include/linux/skbuff.h:1640 [inline]
BUG: KASAN: slab-use-after-free in skb_zcopy include/linux/skbuff.h:1700 [inline]
BUG: KASAN: slab-use-after-free in skb_release_data+0x857/0x980 net/core/skbuff.c:1093
Read of size 4 at addr ffff8880632dbc0c by task syz-executor/5103
CPU: 0 PID: 5103 Comm: syz-executor Tainted: G B 6.10.0-rc6-syzkaller-00069-g795c58e4c7fc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
print_address_description mm/kasan/report.c:377 [inline]
print_report+0xc3/0x620 mm/kasan/report.c:488
kasan_report+0xd9/0x110 mm/kasan/report.c:601
skb_end_pointer include/linux/skbuff.h:1640 [inline]
skb_zcopy include/linux/skbuff.h:1700 [inline]
skb_release_data+0x857/0x980 net/core/skbuff.c:1093
skb_release_all net/core/skbuff.c:1173 [inline]
__kfree_skb net/core/skbuff.c:1187 [inline]
kfree_skb_reason+0x12b/0x210 net/core/skbuff.c:1223
kfree_skb include/linux/skbuff.h:1257 [inline]
__hci_req_sync+0x61d/0x980 net/bluetooth/hci_request.c:184
hci_req_sync+0x97/0xd0 net/bluetooth/hci_request.c:206
hci_dev_cmd+0x634/0x960 net/bluetooth/hci_core.c:787
hci_sock_ioctl+0x4f3/0x880 net/bluetooth/hci_sock.c:1150
sock_do_ioctl+0x119/0x280 net/socket.c:1222
sock_ioctl+0x22e/0x6c0 net/socket.c:1341
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl fs/ioctl.c:893 [inline]
__x64_sys_ioctl+0x196/0x220 fs/ioctl.c:893
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb7bb9757db
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007fffd72953f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fb7bb9757db
RDX: 00007fffd7295468 RSI: 00000000400448dd RDI: 0000000000000003
RBP: 000055558dc304a8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000005
R13: 0000000000000005 R14: 0000000000000009 R15: 0000000000000009
Allocated by task 4486:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:312 [inline]
__kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:338
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3940 [inline]
slab_alloc_node mm/slub.c:4002 [inline]
kmem_cache_alloc_noprof+0x121/0x2f0 mm/slub.c:4009
skb_clone+0x190/0x3f0 net/core/skbuff.c:2052
hci_send_cmd_sync net/bluetooth/hci_core.c:4123 [inline]
hci_cmd_work+0x66a/0x710 net/bluetooth/hci_core.c:4143
process_one_work+0x9c8/0x1b40 kernel/workqueue.c:3248
process_scheduled_works kernel/workqueue.c:3329 [inline]
worker_thread+0x6c8/0xf30 kernel/workqueue.c:3409
kthread+0x2c4/0x3a0 kernel/kthread.c:389
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Freed by task 4486:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579
poison_slab_object+0xf7/0x160 mm/kasan/common.c:240
__kasan_slab_free+0x32/0x50 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2196 [inline]
slab_free mm/slub.c:4438 [inline]
kmem_cache_free+0x12f/0x3a0 mm/slub.c:4513
kfree_skbmem+0x10e/0x200 net/core/skbuff.c:1131
__kfree_skb net/core/skbuff.c:1188 [inline]
kfree_skb_reason+0x138/0x210 net/core/skbuff.c:1223
kfree_skb include/linux/skbuff.h:1257 [inline]
hci_req_sync_complete+0x16c/0x270 net/bluetooth/hci_request.c:109
hci_event_packet+0x966/0x1170 net/bluetooth/hci_event.c:7479
hci_rx_work+0x2c4/0x1610 net/bluetooth/hci_core.c:4074
process_one_work+0x9c8/0x1b40 kernel/workqueue.c:3248
process_scheduled_works kernel/workqueue.c:3329 [inline]
worker_thread+0x6c8/0xf30 kernel/workqueue.c:3409
kthread+0x2c4/0x3a0 kernel/kthread.c:389
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
The buggy address belongs to the object at ffff8880632dbb40
which belongs to the cache skbuff_head_cache of size 240
The buggy address is located 204 bytes inside of
freed 240-byte region [ffff8880632dbb40, ffff8880632dbc30)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x632db
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffefff(slab)
raw: 00fff00000000000 ffff888018edc780 dead000000000122 0000000000000000
raw: 0000000000000000 00000000000c000c 00000001ffffefff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 5097, tgid 5097 (syz-executor), ts 110413636297, free_ts 37146400838
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1473
prep_new_page mm/page_alloc.c:1481 [inline]
get_page_from_freelist+0x1353/0x2e50 mm/page_alloc.c:3425
__alloc_pages_noprof+0x22b/0x2460 mm/page_alloc.c:4683
__alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
alloc_slab_page+0x56/0x110 mm/slub.c:2265
allocate_slab mm/slub.c:2428 [inline]
new_slab+0x84/0x260 mm/slub.c:2481
___slab_alloc+0xdac/0x1870 mm/slub.c:3667
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3757
__slab_alloc_node mm/slub.c:3810 [inline]
slab_alloc_node mm/slub.c:3990 [inline]
kmem_cache_alloc_node_noprof+0xed/0x310 mm/slub.c:4045
__alloc_skb+0x2b1/0x380 net/core/skbuff.c:656
alloc_skb include/linux/skbuff.h:1308 [inline]
nlmsg_new include/net/netlink.h:1015 [inline]
rtmsg_ifinfo_build_skb+0x81/0x280 net/core/rtnetlink.c:4064
rtmsg_ifinfo_event net/core/rtnetlink.c:4107 [inline]
rtmsg_ifinfo_event net/core/rtnetlink.c:4097 [inline]
rtmsg_ifinfo+0x9f/0x1a0 net/core/rtnetlink.c:4116
register_netdevice+0x1710/0x1cb0 net/core/dev.c:10422
__ip_tunnel_create+0x4aa/0x690 net/ipv4/ip_tunnel.c:266
ip_tunnel_init_net+0x22a/0x780 net/ipv4/ip_tunnel.c:1160
ops_init+0xbc/0x650 net/core/net_namespace.c:139
setup_net+0x435/0xb40 net/core/net_namespace.c:343
page last free pid 1 tgid 1 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1093 [inline]
free_unref_page+0x64a/0xe40 mm/page_alloc.c:2588
free_contig_range+0xb6/0x1a0 mm/page_alloc.c:6642
destroy_args+0xa4e/0xe20 mm/debug_vm_pgtable.c:1017
debug_vm_pgtable+0x1705/0x3280 mm/debug_vm_pgtable.c:1397
do_one_initcall+0x12b/0x700 init/main.c:1267
do_initcall_level init/main.c:1329 [inline]
do_initcalls init/main.c:1345 [inline]
do_basic_setup init/main.c:1364 [inline]
kernel_init_freeable+0x69d/0xca0 init/main.c:1578
kernel_init+0x1c/0x2b0 init/main.c:1467
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Memory state around the buggy address:
ffff8880632dbb00: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
ffff8880632dbb80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880632dbc00: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc
^
ffff8880632dbc80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffff8880632dbd00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc
==================================================================
==================================================================
BUG: KASAN: slab-use-after-free in skb_free_head+0x1ae/0x1d0 net/core/skbuff.c:1074
Read of size 8 at addr ffff8880632dbc10 by task syz-executor/5103
CPU: 1 PID: 5103 Comm: syz-executor Tainted: G B 6.10.0-rc6-syzkaller-00069-g795c58e4c7fc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
print_address_description mm/kasan/report.c:377 [inline]
print_report+0xc3/0x620 mm/kasan/report.c:488
kasan_report+0xd9/0x110 mm/kasan/report.c:601
skb_free_head+0x1ae/0x1d0 net/core/skbuff.c:1074
skb_release_data+0x75c/0x980 net/core/skbuff.c:1108
skb_release_all net/core/skbuff.c:1173 [inline]
__kfree_skb net/core/skbuff.c:1187 [inline]
kfree_skb_reason+0x12b/0x210 net/core/skbuff.c:1223
kfree_skb include/linux/skbuff.h:1257 [inline]
__hci_req_sync+0x61d/0x980 net/bluetooth/hci_request.c:184