BUG: Bad page state in process syz-executor175  pfn:42835
page:00000000aeff40e2 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x42835
flags: 0x1ffc00006001002(referenced|reserved|arch_2|arch_3|node=0|zone=0|lastcpupid=0x7ff|kasantag=0x0)
page_type: 0xffffffff()
raw: 01ffc00006001002 fffffc00000a0d48 fffffc00000a0d48 0000000000000000
raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set
Modules linked in:
CPU: 1 PID: 3070 Comm: syz-executor175 Not tainted 6.4.0-syzkaller-04247-g3a8a670eeeaa #0
Hardware name: linux,dummy-virt (DT)
Call trace:
 dump_backtrace+0x94/0xec arch/arm64/kernel/stacktrace.c:233
 show_stack+0x18/0x24 arch/arm64/kernel/stacktrace.c:240
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x48/0x60 lib/dump_stack.c:106
 dump_stack+0x18/0x24 lib/dump_stack.c:113
 bad_page+0x80/0x114 mm/page_alloc.c:533
 free_page_is_bad_report+0x7c/0x88 mm/page_alloc.c:974
 free_page_is_bad mm/page_alloc.c:984 [inline]
 free_pages_prepare mm/page_alloc.c:1153 [inline]
 free_unref_page_prepare+0x24c/0x344 mm/page_alloc.c:2348
 free_unref_page+0x48/0x198 mm/page_alloc.c:2443
 __folio_put_small mm/swap.c:106 [inline]
 __folio_put+0x48/0x90 mm/swap.c:129
 folio_put include/linux/mm.h:1421 [inline]
 put_page include/linux/mm.h:1490 [inline]
 extract_user_to_sg lib/scatterlist.c:1151 [inline]
 extract_iter_to_sg lib/scatterlist.c:1349 [inline]
 extract_iter_to_sg+0x640/0x6fc lib/scatterlist.c:1339
 hash_sendmsg+0xc0/0x43c crypto/algif_hash.c:117
 sock_sendmsg_nosec net/socket.c:725 [inline]
 sock_sendmsg+0x54/0x60 net/socket.c:748
 ____sys_sendmsg+0x270/0x2ac net/socket.c:2494
 ___sys_sendmsg+0x80/0xdc net/socket.c:2548
 __sys_sendmsg+0x68/0xc4 net/socket.c:2577
 __do_sys_sendmsg net/socket.c:2586 [inline]
 __se_sys_sendmsg net/socket.c:2584 [inline]
 __arm64_sys_sendmsg+0x24/0x30 net/socket.c:2584
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x48/0x114 arch/arm64/kernel/syscall.c:52
 el0_svc_common.constprop.0+0x44/0xe4 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x38/0xa4 arch/arm64/kernel/syscall.c:191
 el0_svc+0x2c/0xb0 arch/arm64/kernel/entry-common.c:647
 el0t_64_sync_handler+0xc0/0xc4 arch/arm64/kernel/entry-common.c:665
 el0t_64_sync+0x19c/0x1a0 arch/arm64/kernel/entry.S:591