BUG: Bad page state (2)

Kernel	Title	Repro	Fix bisect	Count	Last	Reported	Patched	Status
upstream	BUG: Bad page state (3) usb	C		3	2462d	2469d	4/28	fixed on 2018/02/02 04:39
linux-4.14	BUG: Bad page state	C		9	591d	733d	0/1	upstream: reported C repro on 2022/10/03 07:33
upstream	BUG: Bad page state (5) mm	C		171	2047d	2061d	0/28	closed as invalid on 2019/02/27 20:53
linux-4.19	BUG: Bad page state			1	1049d	1049d	0/1	auto-closed as invalid on 2022/03/21 10:57
linux-4.19	BUG: Bad page state (2)			1	860d	860d	0/1	auto-obsoleted due to no activity on 2022/09/26 19:49
upstream	BUG: Bad page state (7) mm			3	1497d	1554d	0/28	auto-closed as invalid on 2020/12/28 02:44
linux-6.1	BUG: Bad page state origin:upstream missing-backport	C	done	560	2d01h	497d	0/3	upstream: reported C repro on 2023/05/27 10:10
linux-4.19	BUG: Bad page state (3)	C	error	1	734d	734d	0/1	upstream: reported C repro on 2022/10/02 20:53
android-49	BUG: Bad page state			3	1830d	1853d	0/3	auto-closed as invalid on 2020/01/30 18:48
android-54	BUG: Bad page state	C		9	1650d	1681d	0/2	auto-obsoleted due to no activity on 2022/08/26 22:10
upstream	BUG: Bad page state (4) sound			1	2267d	2267d	0/28	closed as invalid on 2018/09/05 12:51
upstream	BUG: Bad page state (6) mm	C		2	2046d	2046d	0/28	closed as invalid on 2019/03/01 18:38
upstream	BUG: Bad page state	C		2	2608d	2608d	3/28	fixed on 2017/10/24 06:54
linux-5.15	BUG: Bad page state origin:upstream missing-backport	C	error	836	12h33m	538d	0/3	upstream: reported C repro on 2023/04/16 11:16
upstream	BUG: Bad page state (8) jfs mm	C		12948	8h55m	1342d	1/28	upstream: reported C repro on 2021/02/01 10:07

BUG: Bad page state in process syz-executor0 pfn:1ca204 page:ffffea0007288100 count:0 mapcount:0 mapping:ffff8801ca204480 index:0x0 compound_mapcount: 0 flags: 0x2fffc0000008100(slab|head) raw: 02fffc0000008100 ffff8801ca204480 0000000000000000 0000000000000003 raw: ffffea000641d6a0 ffffea0007268720 ffff8801db000c40 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set bad because of flags: 0x100(slab) Modules linked in: CPU: 0 PID: 6979 Comm: syz-executor0 Not tainted 4.14.0-mm1+ #25 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 bad_page+0x230/0x2b0 mm/page_alloc.c:577 free_pages_check_bad+0x1f0/0x2e0 mm/page_alloc.c:955 free_pages_check mm/page_alloc.c:964 [inline] free_pages_prepare mm/page_alloc.c:1054 [inline] free_pcp_prepare mm/page_alloc.c:1079 [inline] free_unref_page_prepare mm/page_alloc.c:2628 [inline] free_unref_page+0x584/0x9d0 mm/page_alloc.c:2678 __free_pages+0x107/0x150 mm/page_alloc.c:4292 free_pages+0x51/0x90 mm/page_alloc.c:4304 blkcipher_walk_done+0x767/0xde0 crypto/blkcipher.c:141 encrypt+0x50a/0xaf0 crypto/salsa20_generic.c:208 skcipher_crypt_blkcipher crypto/skcipher.c:619 [inline] skcipher_decrypt_blkcipher+0x213/0x310 crypto/skcipher.c:637 crypto_skcipher_decrypt include/crypto/skcipher.h:463 [inline] _skcipher_recvmsg crypto/algif_skcipher.c:133 [inline] skcipher_recvmsg+0xb06/0xf30 crypto/algif_skcipher.c:164 sock_recvmsg_nosec net/socket.c:805 [inline] sock_recvmsg+0xc9/0x110 net/socket.c:812 ___sys_recvmsg+0x29b/0x630 net/socket.c:2207 __sys_recvmsg+0xe2/0x210 net/socket.c:2252 SYSC_recvmsg net/socket.c:2264 [inline] SyS_recvmsg+0x2d/0x50 net/socket.c:2259 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x452879 RSP: 002b:00007eff9424bbe8 EFLAGS: 00000212 ORIG_RAX: 000000000000002f RAX: ffffffffffffffda RBX: 0000000000758020 RCX: 0000000000452879 RDX: 0000000000000101 RSI: 0000000020bdb000 RDI: 0000000000000014 RBP: 0000000000000086 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f1f78 R13: 00000000ffffffff R14: 00007eff9424c6d4 R15: 0000000000000000 ================================================================== BUG: KASAN: use-after-free in af_alg_free_areq_sgls+0x921/0xab0 crypto/af_alg.c:667 Read of size 8 at addr ffff8801d343dae8 by task syz-executor0/6979 CPU: 0 PID: 6979 Comm: syz-executor0 Tainted: G B 4.14.0-mm1+ #25 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 print_address_description+0x73/0x250 mm/kasan/report.c:252 kasan_report_error mm/kasan/report.c:351 [inline] kasan_report+0x25b/0x340 mm/kasan/report.c:409 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:430 af_alg_free_areq_sgls+0x921/0xab0 crypto/af_alg.c:667 _skcipher_recvmsg crypto/algif_skcipher.c:150 [inline] skcipher_recvmsg+0x4fa/0xf30 crypto/algif_skcipher.c:164 sock_recvmsg_nosec net/socket.c:805 [inline] sock_recvmsg+0xc9/0x110 net/socket.c:812 ___sys_recvmsg+0x29b/0x630 net/socket.c:2207 __sys_recvmsg+0xe2/0x210 net/socket.c:2252 SYSC_recvmsg net/socket.c:2264 [inline] SyS_recvmsg+0x2d/0x50 net/socket.c:2259 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x452879 RSP: 002b:00007eff9424bbe8 EFLAGS: 00000212 ORIG_RAX: 000000000000002f RAX: ffffffffffffffda RBX: 0000000000758020 RCX: 0000000000452879 RDX: 0000000000000101 RSI: 0000000020bdb000 RDI: 0000000000000014 RBP: 0000000000000086 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f1f78 R13: 00000000ffffffff R14: 00007eff9424c6d4 R15: 0000000000000000 Allocated by task 6979: save_stack+0x43/0xd0 mm/kasan/kasan.c:447 set_track mm/kasan/kasan.c:459 [inline] kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:551 __do_kmalloc mm/slab.c:3712 [inline] __kmalloc+0x162/0x760 mm/slab.c:3721 kmalloc include/linux/slab.h:519 [inline] sock_kmalloc+0x112/0x190 net/core/sock.c:1979 skcipher_accept_parent_nokey+0x90/0x4d0 crypto/algif_skcipher.c:370 skcipher_accept_parent+0x95/0xd0 crypto/algif_skcipher.c:406 af_alg_accept+0x125/0x670 crypto/af_alg.c:294 alg_accept+0x46/0x60 crypto/af_alg.c:330 SYSC_accept4+0x384/0x850 net/socket.c:1573 SyS_accept4 net/socket.c:1523 [inline] SYSC_accept net/socket.c:1607 [inline] SyS_accept+0x26/0x30 net/socket.c:1604 entry_SYSCALL_64_fastpath+0x1f/0x96 Freed by task 6979: save_stack+0x43/0xd0 mm/kasan/kasan.c:447 set_track mm/kasan/kasan.c:459 [inline] kasan_slab_free+0x71/0xc0 mm/kasan/kasan.c:524 __cache_free mm/slab.c:3492 [inline] kfree+0xca/0x250 mm/slab.c:3807 blkcipher_walk_done+0x72b/0xde0 crypto/blkcipher.c:139 encrypt+0x50a/0xaf0 crypto/salsa20_generic.c:208 skcipher_crypt_blkcipher crypto/skcipher.c:619 [inline] skcipher_decrypt_blkcipher+0x213/0x310 crypto/skcipher.c:637 crypto_skcipher_decrypt include/crypto/skcipher.h:463 [inline] _skcipher_recvmsg crypto/algif_skcipher.c:133 [inline] skcipher_recvmsg+0xb06/0xf30 crypto/algif_skcipher.c:164 sock_recvmsg_nosec net/socket.c:805 [inline] sock_recvmsg+0xc9/0x110 net/socket.c:812 ___sys_recvmsg+0x29b/0x630 net/socket.c:2207 __sys_recvmsg+0xe2/0x210 net/socket.c:2252 SYSC_recvmsg net/socket.c:2264 [inline] SyS_recvmsg+0x2d/0x50 net/socket.c:2259 entry_SYSCALL_64_fastpath+0x1f/0x96 The buggy address belongs to the object at ffff8801d343da00 which belongs to the cache kmalloc-256 of size 256 The buggy address is located 232 bytes inside of 256-byte region [ffff8801d343da00, ffff8801d343db00) The buggy address belongs to the page: page:ffffea00074d0f40 count:1 mapcount:0 mapping:ffff8801d343d000 index:0x0 flags: 0x2fffc0000000100(slab) raw: 02fffc0000000100 ffff8801d343d000 0000000000000000 000000010000000c raw: ffffea00074c5fe0 ffffea00074c6120 ffff8801db0007c0 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8801d343d980: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff8801d343da00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff8801d343da80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8801d343db00: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 ffff8801d343db80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================