KASAN: use-after-free Read in mon_bin

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
android-5-10	KASAN: use-after-free Read in mon_bin_flush	C	error		2	586d	588d	2/2	fixed on 2022/10/19 01:02
upstream	KASAN: use-after-free Read in mon_bin_flush usb	C	inconclusive	unreliable	15	426d	586d	0/26	auto-obsoleted due to no activity on 2023/06/25 03:47
android-54	general protection fault in mon_bin_flush	C			2	586d	588d	0/2	auto-obsoleted due to no activity on 2023/04/20 21:41

================================================================== BUG: KASAN: use-after-free in MON_OFF2HDR drivers/usb/mon/mon_bin.c:207 [inline] BUG: KASAN: use-after-free in mon_bin_flush+0x121/0x260 drivers/usb/mon/mon_bin.c:884 Read of size 8 at addr ffff888148db62f8 by task syz-executor.2/4457 CPU: 0 PID: 4457 Comm: syz-executor.2 Not tainted 5.15.72-syzkaller-04310-g43eb03f7ce81 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106 print_address_description+0x87/0x3d0 mm/kasan/report.c:256 __kasan_report mm/kasan/report.c:435 [inline] kasan_report+0x1a6/0x1f0 mm/kasan/report.c:452 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:309 MON_OFF2HDR drivers/usb/mon/mon_bin.c:207 [inline] mon_bin_flush+0x121/0x260 drivers/usb/mon/mon_bin.c:884 mon_bin_ioctl+0x77c/0xed0 drivers/usb/mon/mon_bin.c:1091 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl+0x115/0x190 fs/ioctl.c:860 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f52d41ba5a9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f52d330d168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f52d42db050 RCX: 00007f52d41ba5a9 RDX: 0000000020000080 RSI: 00000000c0109207 RDI: 0000000000000003 RBP: 00007f52d4215580 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe82ef402f R14: 00007f52d330d300 R15: 0000000000022000 </TASK> Allocated by task 3798: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:45 [inline] set_alloc_info mm/kasan/common.c:433 [inline] __kasan_slab_alloc+0xb2/0xe0 mm/kasan/common.c:466 kasan_slab_alloc include/linux/kasan.h:244 [inline] slab_post_alloc_hook mm/slab.h:550 [inline] slab_alloc_node mm/slub.c:3236 [inline] slab_alloc mm/slub.c:3244 [inline] kmem_cache_alloc+0x189/0x2f0 mm/slub.c:3249 kmem_cache_alloc_node include/linux/slab.h:462 [inline] __alloc_skb+0xbc/0x550 net/core/skbuff.c:416 alloc_skb include/linux/skbuff.h:1163 [inline] alloc_skb_with_frags+0xae/0x6b0 net/core/skbuff.c:6128 sock_alloc_send_pskb+0x930/0xa70 net/core/sock.c:2503 unix_dgram_sendmsg+0x6e9/0x2030 net/unix/af_unix.c:1811 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg net/socket.c:724 [inline] ____sys_sendmsg+0x597/0x8e0 net/socket.c:2412 ___sys_sendmsg net/socket.c:2466 [inline] __sys_sendmmsg+0x5c7/0x800 net/socket.c:2552 __do_sys_sendmmsg net/socket.c:2581 [inline] __se_sys_sendmmsg net/socket.c:2578 [inline] __x64_sys_sendmmsg+0xa0/0xb0 net/socket.c:2578 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb Freed by task 3798: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track+0x4c/0x70 mm/kasan/common.c:45 kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:370 ____kasan_slab_free+0x126/0x160 mm/kasan/common.c:365 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:373 kasan_slab_free include/linux/kasan.h:220 [inline] slab_free_hook mm/slub.c:1721 [inline] slab_free_freelist_hook+0xc9/0x1a0 mm/slub.c:1747 slab_free mm/slub.c:3515 [inline] kmem_cache_free+0x11a/0x2e0 mm/slub.c:3531 __kfree_skb+0x13e/0x1c0 net/core/skbuff.c:758 kfree_skb_reason net/core/skbuff.c:778 [inline] kfree_skb+0x7b/0x2e0 net/core/skbuff.c:792 unix_dgram_sendmsg+0xb82/0x2030 net/unix/af_unix.c:1951 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg net/socket.c:724 [inline] ____sys_sendmsg+0x597/0x8e0 net/socket.c:2412 ___sys_sendmsg net/socket.c:2466 [inline] __sys_sendmmsg+0x5c7/0x800 net/socket.c:2552 __do_sys_sendmmsg net/socket.c:2581 [inline] __se_sys_sendmmsg net/socket.c:2578 [inline] __x64_sys_sendmmsg+0xa0/0xb0 net/socket.c:2578 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb The buggy address belongs to the object at ffff888148db6280 which belongs to the cache skbuff_head_cache of size 248 The buggy address is located 120 bytes inside of 248-byte region [ffff888148db6280, ffff888148db6378) The buggy address belongs to the page: page:ffffea0005236d80 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x148db6 flags: 0x4000000000000200(slab|zone=1) raw: 4000000000000200 dead000000000100 dead000000000122 ffff888100220480 raw: 0000000000000000 00000000000c000c 00000001ffffffff 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 0x112a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_HARDWALL), pid 29297, ts 1042135889257, free_ts 1042130221193 set_page_owner include/linux/page_owner.h:33 [inline] post_alloc_hook+0x1ab/0x1b0 mm/page_alloc.c:2495 prep_new_page mm/page_alloc.c:2501 [inline] get_page_from_freelist+0x38b/0x400 mm/page_alloc.c:4281 __alloc_pages+0x3a8/0x7c0 mm/page_alloc.c:5548 allocate_slab+0x62/0x580 mm/slub.c:1928 new_slab mm/slub.c:1991 [inline] ___slab_alloc+0x2e2/0x6f0 mm/slub.c:3024 __slab_alloc+0x4a/0x90 mm/slub.c:3111 slab_alloc_node mm/slub.c:3202 [inline] slab_alloc mm/slub.c:3244 [inline] kmem_cache_alloc+0x205/0x2f0 mm/slub.c:3249 kmem_cache_alloc_node include/linux/slab.h:462 [inline] __alloc_skb+0xbc/0x550 net/core/skbuff.c:416 alloc_skb include/linux/skbuff.h:1163 [inline] nlmsg_new include/net/netlink.h:953 [inline] inet6_ifa_notify net/ipv6/addrconf.c:5508 [inline] __ipv6_ifa_notify+0x2c0/0x12e0 net/ipv6/addrconf.c:6154 addrconf_ifdown+0xef7/0x1be0 net/ipv6/addrconf.c:3892 addrconf_notify+0x372/0xec0 notifier_call_chain kernel/notifier.c:83 [inline] raw_notifier_call_chain+0x9e/0x110 kernel/notifier.c:391 call_netdevice_notifiers_info net/core/dev.c:2005 [inline] call_netdevice_notifiers_extack net/core/dev.c:2017 [inline] call_netdevice_notifiers net/core/dev.c:2031 [inline] dev_close_many+0x3fb/0x5d0 net/core/dev.c:1606 unregister_netdevice_many+0x505/0x1920 net/core/dev.c:11054 default_device_exit_batch+0x43b/0x4a0 net/core/dev.c:11607 ops_exit_list net/core/net_namespace.c:167 [inline] cleanup_net+0x76d/0xce0 net/core/net_namespace.c:589 page last free stack trace: reset_page_owner include/linux/page_owner.h:26 [inline] free_pages_prepare mm/page_alloc.c:1364 [inline] free_pcp_prepare+0x448/0x450 mm/page_alloc.c:1435 free_unref_page_prepare mm/page_alloc.c:3433 [inline] free_unref_page+0x9c/0x370 mm/page_alloc.c:3513 free_the_page mm/page_alloc.c:706 [inline] __free_pages+0xd8/0x100 mm/page_alloc.c:5621 __free_slab+0xf0/0x1d0 mm/slub.c:2016 free_slab mm/slub.c:2031 [inline] discard_slab+0x29/0x40 mm/slub.c:2037 __slab_free+0x238/0x2f0 mm/slub.c:3420 do_slab_free mm/slub.c:3503 [inline] ___cache_free+0x112/0x130 mm/slub.c:3522 qlink_free+0x4d/0x90 mm/kasan/quarantine.c:157 qlist_free_all+0x4c/0xc0 mm/kasan/quarantine.c:176 kasan_quarantine_reduce+0x15a/0x180 mm/kasan/quarantine.c:283 __kasan_slab_alloc+0x2f/0xe0 mm/kasan/common.c:443 kasan_slab_alloc include/linux/kasan.h:244 [inline] slab_post_alloc_hook mm/slab.h:550 [inline] slab_alloc_node mm/slub.c:3236 [inline] slab_alloc mm/slub.c:3244 [inline] kmem_cache_alloc_trace+0x18a/0x310 mm/slub.c:3261 kmalloc include/linux/slab.h:591 [inline] kzalloc include/linux/slab.h:721 [inline] mld_add_delrec net/ipv6/mcast.c:742 [inline] igmp6_leave_group net/ipv6/mcast.c:2627 [inline] igmp6_group_dropped+0x420/0xa10 net/ipv6/mcast.c:722 __ipv6_dev_mc_dec+0x2ef/0x610 net/ipv6/mcast.c:978 addrconf_leave_solict net/ipv6/addrconf.c:2198 [inline] __ipv6_ifa_notify+0x990/0x12e0 net/ipv6/addrconf.c:6183 addrconf_ifdown+0xef7/0x1be0 net/ipv6/addrconf.c:3892 Memory state around the buggy address: ffff888148db6180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888148db6200: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc >ffff888148db6280: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888148db6300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc ffff888148db6380: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb ================================================================== general protection fault, probably for non-canonical address 0xdffffc0000000164: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000b20-0x0000000000000b27] CPU: 0 PID: 4457 Comm: syz-executor.2 Tainted: G B 5.15.72-syzkaller-04310-g43eb03f7ce81 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 RIP: 0010:mon_bin_flush+0x141/0x260 drivers/usb/mon/mon_bin.c:885 Code: 74 08 48 89 df e8 3f c0 7f fe 48 8b 03 41 81 e7 ff 0f 00 00 4d 8d 7c 07 24 4c 89 f8 48 c1 e8 03 48 bb 00 00 00 00 00 fc ff df <0f> b6 04 18 84 c0 75 6b 41 8b 37 83 c6 40 4c 89 f7 e8 a9 fd ff ff RSP: 0018:ffffc9000aa97ce8 EFLAGS: 00010003 RAX: 0000000000000164 RBX: dffffc0000000000 RCX: 0000000000000002 RDX: 0000000000000000 RSI: 0000000000000092 RDI: 0000000000000001 RBP: ffffc9000aa97d50 R08: ffffffff8142fa13 R09: fffffbfff0e4f6f5 R10: fffffbfff0e4f6f5 R11: 1ffffffff0e4f6f4 R12: 00000000ffffffff R13: ffff88811282c618 R14: ffff88811282c600 R15: 0000000000000b24 FS: 00007f52d330d700(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f52d32cad38 CR3: 0000000147f87000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> mon_bin_ioctl+0x77c/0xed0 drivers/usb/mon/mon_bin.c:1091 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl+0x115/0x190 fs/ioctl.c:860 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f52d41ba5a9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f52d330d168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f52d42db050 RCX: 00007f52d41ba5a9 RDX: 0000000020000080 RSI: 00000000c0109207 RDI: 0000000000000003 RBP: 00007f52d4215580 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe82ef402f R14: 00007f52d330d300 R15: 0000000000022000 </TASK> Modules linked in: ---[ end trace 4bb480ef3b9cb446 ]--- RIP: 0010:mon_bin_flush+0x141/0x260 drivers/usb/mon/mon_bin.c:885 Code: 74 08 48 89 df e8 3f c0 7f fe 48 8b 03 41 81 e7 ff 0f 00 00 4d 8d 7c 07 24 4c 89 f8 48 c1 e8 03 48 bb 00 00 00 00 00 fc ff df <0f> b6 04 18 84 c0 75 6b 41 8b 37 83 c6 40 4c 89 f7 e8 a9 fd ff ff RSP: 0018:ffffc9000aa97ce8 EFLAGS: 00010003 RAX: 0000000000000164 RBX: dffffc0000000000 RCX: 0000000000000002 RDX: 0000000000000000 RSI: 0000000000000092 RDI: 0000000000000001 RBP: ffffc9000aa97d50 R08: ffffffff8142fa13 R09: fffffbfff0e4f6f5 R10: fffffbfff0e4f6f5 R11: 1ffffffff0e4f6f4 R12: 00000000ffffffff R13: ffff88811282c618 R14: ffff88811282c600 R15: 0000000000000b24 FS: 00007f52d330d700(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f52d32cad38 CR3: 0000000147f87000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 74 08 je 0xa 2: 48 89 df mov %rbx,%rdi 5: e8 3f c0 7f fe callq 0xfe7fc049 a: 48 8b 03 mov (%rbx),%rax d: 41 81 e7 ff 0f 00 00 and $0xfff,%r15d 14: 4d 8d 7c 07 24 lea 0x24(%r15,%rax,1),%r15 19: 4c 89 f8 mov %r15,%rax 1c: 48 c1 e8 03 shr $0x3,%rax 20: 48 bb 00 00 00 00 00 movabs $0xdffffc0000000000,%rbx 27: fc ff df * 2a: 0f b6 04 18 movzbl (%rax,%rbx,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 75 6b jne 0x9d 32: 41 8b 37 mov (%r15),%esi 35: 83 c6 40 add $0x40,%esi 38: 4c 89 f7 mov %r14,%rdi 3b: e8 a9 fd ff ff callq 0xfffffde9