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[syzbot] [bluetooth?] KASAN: slab-use-after-free Read in hci_req_sync_complete | 0 (1) | 2024/06/07 22:46 |
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[syzbot] [bluetooth?] KASAN: slab-use-after-free Read in hci_req_sync_complete | 0 (1) | 2024/06/07 22:46 |
================================================================== BUG: KASAN: slab-use-after-free in kfree_skbmem+0x18e/0x1b0 net/core/skbuff.c:1129 Read of size 1 at addr ffff88805b64cbbe by task kworker/u9:5/5129 CPU: 1 PID: 5129 Comm: kworker/u9:5 Not tainted 6.10.0-rc3-syzkaller-00044-g2ccbdf43d5e7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 Workqueue: hci3 hci_rx_work Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 print_address_description mm/kasan/report.c:377 [inline] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan/report.c:601 kfree_skbmem+0x18e/0x1b0 net/core/skbuff.c:1129 kfree_skb include/linux/skbuff.h:1257 [inline] hci_req_sync_complete+0xe7/0x290 net/bluetooth/hci_request.c:109 hci_event_packet+0xc73/0x1540 net/bluetooth/hci_event.c:7479 hci_rx_work+0x3e8/0xca0 net/bluetooth/hci_core.c:4074 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3312 worker_thread+0x86d/0xd70 kernel/workqueue.c:3393 kthread+0x2f2/0x390 kernel/kthread.c:389 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 </TASK> Allocated by task 5129: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:312 [inline] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slub.c:3941 [inline] slab_alloc_node mm/slub.c:4001 [inline] kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4008 skb_clone+0x20c/0x390 net/core/skbuff.c:2052 hci_send_cmd_sync net/bluetooth/hci_core.c:4123 [inline] hci_cmd_work+0x29e/0x670 net/bluetooth/hci_core.c:4143 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3312 worker_thread+0x86d/0xd70 kernel/workqueue.c:3393 kthread+0x2f2/0x390 kernel/kthread.c:389 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Freed by task 7944: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579 poison_slab_object+0xe0/0x150 mm/kasan/common.c:240 __kasan_slab_free+0x37/0x60 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:4437 [inline] kmem_cache_free+0x145/0x350 mm/slub.c:4512 kfree_skb include/linux/skbuff.h:1257 [inline] __hci_req_sync+0x62f/0x950 net/bluetooth/hci_request.c:184 hci_req_sync+0xa9/0xd0 net/bluetooth/hci_request.c:206 hci_dev_cmd+0x4c5/0xa50 net/bluetooth/hci_core.c:787 sock_do_ioctl+0x15a/0x460 net/socket.c:1222 sock_ioctl+0x629/0x8e0 net/socket.c:1341 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0xfe/0x170 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff88805b64cb40 which belongs to the cache skbuff_head_cache of size 240 The buggy address is located 126 bytes inside of freed 240-byte region [ffff88805b64cb40, ffff88805b64cc30) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x5b64c anon flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffefff(slab) raw: 00fff00000000000 ffff888018adb780 ffffea0000b6fa40 dead000000000005 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 0x152820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_HARDWALL), pid 5182, tgid 5182 (kworker/0:7), ts 231489126161, free_ts 230391703657 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1468 prep_new_page mm/page_alloc.c:1476 [inline] get_page_from_freelist+0x2e43/0x2f00 mm/page_alloc.c:3420 __alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4678 __alloc_pages_node_noprof include/linux/gfp.h:269 [inline] alloc_pages_node_noprof include/linux/gfp.h:296 [inline] alloc_slab_page+0x5f/0x120 mm/slub.c:2265 allocate_slab+0x5a/0x2f0 mm/slub.c:2428 new_slab mm/slub.c:2481 [inline] ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3667 __slab_alloc+0x58/0xa0 mm/slub.c:3757 __slab_alloc_node mm/slub.c:3810 [inline] slab_alloc_node mm/slub.c:3989 [inline] kmem_cache_alloc_node_noprof+0x1fe/0x320 mm/slub.c:4044 __alloc_skb+0x1c3/0x440 net/core/skbuff.c:656 alloc_skb include/linux/skbuff.h:1308 [inline] nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:748 [inline] nsim_dev_trap_report drivers/net/netdevsim/dev.c:805 [inline] nsim_dev_trap_report_work+0x254/0xaa0 drivers/net/netdevsim/dev.c:850 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3312 worker_thread+0x86d/0xd70 kernel/workqueue.c:3393 kthread+0x2f2/0x390 kernel/kthread.c:389 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 page last free pid 7402 tgid 7401 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1088 [inline] __free_pages_ok+0xb4e/0xcc0 mm/page_alloc.c:1208 __folio_put+0x3b9/0x620 mm/swap.c:129 folio_put include/linux/mm.h:1508 [inline] free_large_kmalloc+0x105/0x1c0 mm/slub.c:4529 kfree+0x1c4/0x360 mm/slub.c:4552 skb_kfree_head net/core/skbuff.c:1069 [inline] skb_free_head net/core/skbuff.c:1081 [inline] skb_release_data+0x676/0x880 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+0x1a3/0x3b0 net/core/skbuff.c:1223 sctp_queue_purge_ulpevents+0xa3/0x130 net/sctp/ulpevent.c:1186 sctp_close+0x153/0x920 net/sctp/socket.c:1500 inet_release+0x17f/0x200 net/ipv4/af_inet.c:437 __sock_release net/socket.c:659 [inline] sock_close+0xbe/0x240 net/socket.c:1421 __fput+0x408/0x8b0 fs/file_table.c:422 task_work_run+0x251/0x310 kernel/task_work.c:180 get_signal+0x15e6/0x1740 kernel/signal.c:2681 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 Memory state around the buggy address: ffff88805b64ca80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc ffff88805b64cb00: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb >ffff88805b64cb80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88805b64cc00: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc ffff88805b64cc80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2024/06/13 13:15 | upstream | 2ccbdf43d5e7 | 2aa5052f | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-root | KASAN: slab-use-after-free Read in hci_req_sync_complete | ||
2024/06/05 01:36 | upstream | 32f88d65f01b | e1e2c66e | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-fs | KASAN: slab-use-after-free Read in hci_req_sync_complete | ||
2024/04/29 23:53 | upstream | b947cc5bf6d7 | 27e33c58 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-selinux-root | KASAN: slab-use-after-free Read in hci_req_sync_complete | ||
2024/07/02 08:02 | net-next | 74d6529b78f7 | b294e901 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-net-next-test-gce | KASAN: slab-use-after-free Read in hci_req_sync_complete | ||
2024/06/11 20:59 | net-next | bb678f01804c | 4d75f4f7 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-net-next-test-gce | KASAN: slab-use-after-free Read in hci_req_sync_complete | ||
2024/06/07 22:45 | net-next | a99997323654 | 82c05ab8 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-net-next-test-gce | KASAN: slab-use-after-free Read in hci_req_sync_complete | ||
2024/05/15 21:55 | net-next | 654de42f3fc6 | 94b087b1 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-net-next-test-gce | KASAN: slab-use-after-free Read in hci_req_sync_complete | ||
2024/05/08 08:46 | net-next | 0d5044b4e774 | 4cf3f9b3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-net-next-test-gce | KASAN: slab-use-after-free Read in hci_req_sync_complete |