KASAN: use-after-free Read in dump

Date	Name	Commit	Repro	Result
2024/03/26	upstream (ToT)	928a87efa423	C	[report] KASAN: slab-use-after-free Read in advance_sched

Date

Name

Commit

Repro

Result

2024/03/26

upstream (ToT)

928a87efa423

[report] KASAN: slab-use-after-free Read in advance_sched

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	KASAN: use-after-free Read in dump_schedule net	C	done	done	7	1430d	1541d	19/28	fixed on 2021/03/10 01:48
linux-5.15	KASAN: use-after-free Read in dump_schedule origin:upstream missing-backport	C		error	2	26d	245d	0/3	upstream: reported C repro on 2024/03/23 08:43
upstream	KASAN: use-after-free Read in dump_schedule (2) net	C	done	inconclusive	10	718d	1279d	0/28	auto-obsoleted due to no activity on 2023/10/12 02:40

Created	Duration	User	Patch	Repo	Result
2024/06/21 09:26	1h16m	radoslaw.zielonek@gmail.com		linux-6.1.y	OK log

Created

Duration

User

Patch

Repo

Result

2024/06/21 09:26

1h16m

radoslaw.zielonek@gmail.com

linux-6.1.y

OK log

================================================================== BUG: KASAN: use-after-free in dump_schedule+0xc8/0x7a0 net/sched/sch_taprio.c:1932 Read of size 8 at addr ffff0000e65c9a40 by task syz-executor.0/4612 CPU: 1 PID: 4612 Comm: syz-executor.0 Not tainted 6.1.82-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:284 [inline] print_report+0x174/0x4c0 mm/kasan/report.c:395 kasan_report+0xd4/0x130 mm/kasan/report.c:495 __asan_report_load8_noabort+0x2c/0x38 mm/kasan/report_generic.c:351 dump_schedule+0xc8/0x7a0 net/sched/sch_taprio.c:1932 taprio_dump+0xa0c/0xd80 net/sched/sch_taprio.c:2029 tc_fill_qdisc+0x55c/0xf70 net/sched/sch_api.c:949 qdisc_notify+0x1a0/0x338 net/sched/sch_api.c:1021 tc_modify_qdisc+0x16d0/0x186c net/sched/sch_api.c:1722 rtnetlink_rcv_msg+0x72c/0xd94 net/core/rtnetlink.c:6121 netlink_rcv_skb+0x20c/0x3b8 net/netlink/af_netlink.c:2508 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6139 netlink_unicast_kernel net/netlink/af_netlink.c:1326 [inline] netlink_unicast+0x65c/0x898 net/netlink/af_netlink.c:1352 netlink_sendmsg+0x834/0xb18 net/netlink/af_netlink.c:1874 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] ____sys_sendmsg+0x55c/0x848 net/socket.c:2514 ___sys_sendmsg net/socket.c:2568 [inline] __sys_sendmmsg+0x318/0x7d8 net/socket.c:2654 __do_sys_sendmmsg net/socket.c:2683 [inline] __se_sys_sendmmsg net/socket.c:2680 [inline] __arm64_sys_sendmmsg+0xa0/0xbc net/socket.c:2680 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Allocated by task 4607: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x80 mm/kasan/common.c:52 kasan_save_alloc_info+0x24/0x30 mm/kasan/generic.c:505 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0xac/0xc4 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:211 [inline] kmalloc_trace+0x7c/0x94 mm/slab_common.c:1050 kmalloc include/linux/slab.h:556 [inline] kzalloc include/linux/slab.h:692 [inline] taprio_change+0x96c/0x3834 net/sched/sch_taprio.c:1579 qdisc_change net/sched/sch_api.c:1390 [inline] tc_modify_qdisc+0x1470/0x186c net/sched/sch_api.c:1720 rtnetlink_rcv_msg+0x72c/0xd94 net/core/rtnetlink.c:6121 netlink_rcv_skb+0x20c/0x3b8 net/netlink/af_netlink.c:2508 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6139 netlink_unicast_kernel net/netlink/af_netlink.c:1326 [inline] netlink_unicast+0x65c/0x898 net/netlink/af_netlink.c:1352 netlink_sendmsg+0x834/0xb18 net/netlink/af_netlink.c:1874 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] ____sys_sendmsg+0x55c/0x848 net/socket.c:2514 ___sys_sendmsg net/socket.c:2568 [inline] __sys_sendmmsg+0x318/0x7d8 net/socket.c:2654 __do_sys_sendmmsg net/socket.c:2683 [inline] __se_sys_sendmmsg net/socket.c:2680 [inline] __arm64_sys_sendmmsg+0xa0/0xbc net/socket.c:2680 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Freed by task 15: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x80 mm/kasan/common.c:52 kasan_save_free_info+0x38/0x5c mm/kasan/generic.c:516 ____kasan_slab_free+0x144/0x1c0 mm/kasan/common.c:236 __kasan_slab_free+0x18/0x28 mm/kasan/common.c:244 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1724 [inline] slab_free_freelist_hook mm/slub.c:1750 [inline] slab_free mm/slub.c:3661 [inline] __kmem_cache_free+0x2c0/0x4b4 mm/slub.c:3674 kfree+0xcc/0x1b8 mm/slab_common.c:1007 taprio_free_sched_cb+0x154/0x174 net/sched/sch_taprio.c:127 rcu_do_batch kernel/rcu/tree.c:2296 [inline] rcu_core+0x878/0x1c10 kernel/rcu/tree.c:2556 rcu_core_si+0x10/0x1c kernel/rcu/tree.c:2573 __do_softirq+0x314/0xe38 kernel/softirq.c:571 Last potentially related work creation: kasan_save_stack+0x40/0x70 mm/kasan/common.c:45 __kasan_record_aux_stack+0xcc/0xe8 mm/kasan/generic.c:486 kasan_record_aux_stack_noalloc+0x14/0x20 mm/kasan/generic.c:496 call_rcu+0xfc/0xa40 kernel/rcu/tree.c:2844 taprio_change+0x2e7c/0x3834 net/sched/sch_taprio.c:1686 qdisc_change net/sched/sch_api.c:1390 [inline] tc_modify_qdisc+0x1470/0x186c net/sched/sch_api.c:1720 rtnetlink_rcv_msg+0x72c/0xd94 net/core/rtnetlink.c:6121 netlink_rcv_skb+0x20c/0x3b8 net/netlink/af_netlink.c:2508 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6139 netlink_unicast_kernel net/netlink/af_netlink.c:1326 [inline] netlink_unicast+0x65c/0x898 net/netlink/af_netlink.c:1352 netlink_sendmsg+0x834/0xb18 net/netlink/af_netlink.c:1874 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] ____sys_sendmsg+0x55c/0x848 net/socket.c:2514 ___sys_sendmsg net/socket.c:2568 [inline] __sys_sendmmsg+0x318/0x7d8 net/socket.c:2654 __do_sys_sendmmsg net/socket.c:2683 [inline] __se_sys_sendmmsg net/socket.c:2680 [inline] __arm64_sys_sendmmsg+0xa0/0xbc net/socket.c:2680 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 The buggy address belongs to the object at ffff0000e65c9a00 which belongs to the cache kmalloc-128 of size 128 The buggy address is located 64 bytes inside of 128-byte region [ffff0000e65c9a00, ffff0000e65c9a80) The buggy address belongs to the physical page: page:000000001433dc37 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1265c9 flags: 0x5ffc00000000200(slab|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000000200 fffffc00039920c0 dead000000000004 ffff0000c0002300 raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000e65c9900: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc ffff0000e65c9980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff0000e65c9a00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff0000e65c9a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff0000e65c9b00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== netlink: 20 bytes leftover after parsing attributes in process `syz-executor.0'.

Crashes (2):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2024/03/25 15:22	linux-6.1.y	d7543167affd	0ea90952	.config	console log	report	syz			[disk image] [vmlinux] [kernel image]	ci2-linux-6-1-kasan-arm64	KASAN: use-after-free Read in dump_schedule
2024/04/14 10:53	linux-6.1.y	cd5d98c0556c	c8349e48	.config	console log	report	syz			[disk image] [vmlinux] [kernel image]	ci2-linux-6-1-kasan-arm64	KASAN: use-after-free Read in dump_schedule

Crashes (2):

Assets (help?)