"syz-executor.3" (10131) uses obsolete ecb(arc4) skcipher ================================================================== BUG: KASAN: slab-out-of-bounds in arc4_crypt+0x31c/0x4e0 lib/crypto/arc4.c:46 Read of size 4 at addr ffff8880792bb6e0 by task syz-executor.3/10131 CPU: 0 PID: 10131 Comm: syz-executor.3 Not tainted 6.7.0-rc6-next-20231222-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:377 [inline] print_report+0xc3/0x620 mm/kasan/report.c:488 kasan_report+0xd9/0x110 mm/kasan/report.c:601 arc4_crypt+0x31c/0x4e0 lib/crypto/arc4.c:46 crypto_arc4_crypt+0x61/0x70 crypto/arc4.c:37 crypto_lskcipher_crypt_sg+0x28c/0x460 crypto/lskcipher.c:229 crypto_skcipher_decrypt+0xda/0x160 crypto/skcipher.c:693 _skcipher_recvmsg crypto/algif_skcipher.c:199 [inline] skcipher_recvmsg+0xc2b/0x1040 crypto/algif_skcipher.c:221 sock_recvmsg_nosec net/socket.c:1044 [inline] sock_recvmsg+0xe2/0x170 net/socket.c:1066 ____sys_recvmsg+0x21f/0x5c0 net/socket.c:2801 ___sys_recvmsg+0x115/0x1a0 net/socket.c:2843 do_recvmmsg+0x2af/0x740 net/socket.c:2937 __sys_recvmmsg net/socket.c:3016 [inline] __do_sys_recvmmsg net/socket.c:3039 [inline] __se_sys_recvmmsg net/socket.c:3032 [inline] __x64_sys_recvmmsg+0x235/0x290 net/socket.c:3032 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x62/0x6a RIP: 0033:0x7f3198c7cce9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f319991b0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00007f3198d9bf80 RCX: 00007f3198c7cce9 RDX: 0000000000000001 RSI: 00000000200015c0 RDI: 0000000000000004 RBP: 00007f3198cc947a R08: 0000000000000000 R09: 0000000000000000 R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f3198d9bf80 R15: 00007ffe329cc258 Allocated by task 160: kasan_save_stack+0x33/0x50 mm/kasan/common.c:47 kasan_set_track+0x24/0x30 mm/kasan/common.c:61 poison_kmalloc_redzone mm/kasan/common.c:340 [inline] __kasan_kmalloc+0xa2/0xb0 mm/kasan/common.c:357 kmalloc include/linux/slab.h:590 [inline] kzalloc include/linux/slab.h:711 [inline] kobject_create lib/kobject.c:764 [inline] kobject_create_and_add+0x4a/0xf0 lib/kobject.c:790 hugetlb_sysfs_init mm/hugetlb.c:4474 [inline] hugetlb_init+0xd02/0x16c0 mm/hugetlb.c:4550 do_one_initcall+0x128/0x680 init/main.c:1237 do_initcall_level init/main.c:1299 [inline] do_initcalls init/main.c:1315 [inline] do_basic_setup init/main.c:1334 [inline] kernel_init_freeable+0x692/0xc30 init/main.c:1554 kernel_init+0x1c/0x2a0 init/main.c:1444 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 Last potentially related work creation: set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x2d0/0x350 mm/page_alloc.c:1533 prep_new_page mm/page_alloc.c:1540 [inline] get_page_from_freelist+0xa19/0x3740 mm/page_alloc.c:3348 __alloc_pages+0x22e/0x2410 mm/page_alloc.c:4604 alloc_pages_mpol+0x258/0x5f0 mm/mempolicy.c:2133 vm_area_alloc_pages mm/vmalloc.c:3063 [inline] __vmalloc_area_node mm/vmalloc.c:3139 [inline] __vmalloc_node_range+0xa6b/0x1530 mm/vmalloc.c:3320 vmalloc_huge+0x70/0x90 mm/vmalloc.c:3437 alloc_large_system_hash+0x278/0x640 mm/mm_init.c:2523 inode_init+0xa5/0xd0 fs/inode.c:2296 vfs_caches_init+0x102/0x130 fs/dcache.c:3180 start_kernel+0x362/0x480 init/main.c:1057 x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:555 x86_64_start_kernel+0xb2/0xc0 arch/x86/kernel/head64.c:536 secondary_startup_64_no_verify+0x170/0x17b Second to last potentially related work creation: kasan_save_stack+0x33/0x50 mm/kasan/common.c:47 kasan_set_track+0x24/0x30 mm/kasan/common.c:61 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:582 poison_slab_object+0x119/0x190 mm/kasan/common.c:233 __kasan_slab_free+0x14/0x30 mm/kasan/common.c:241 kasan_slab_free include/linux/kasan.h:183 [inline] slab_free_hook mm/slub.c:2121 [inline] slab_free mm/slub.c:4303 [inline] kfree+0x129/0x370 mm/slub.c:4413 elf_core_dump+0x743/0x3900 fs/binfmt_elf.c:2092 do_coredump+0x2c22/0x3f50 fs/coredump.c:764 get_signal+0x2405/0x2760 kernel/signal.c:2879 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:310 exit_to_user_mode_loop kernel/entry/common.c:168 [inline] exit_to_user_mode_prepare+0x11e/0x240 kernel/entry/common.c:204 irqentry_exit_to_user_mode+0xa/0x40 kernel/entry/common.c:309 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 The buggy address belongs to the object at ffff8880792bb000 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 1024 bytes to the right of allocated 736-byte region [ffff8880792bb000, ffff8880792bb2e0) The buggy address belongs to the physical page: page:ffffea0001e4ae00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x792b8 head:ffffea0001e4ae00 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 anon flags: 0xfff00000000840(slab|head|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000840 ffff888013041dc0 0000000000000000 dead000000000001 raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0x1d2820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 5158, tgid 5158 (kworker/1:6), ts 264979444400, free_ts 264954209921 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x2d0/0x350 mm/page_alloc.c:1533 prep_new_page mm/page_alloc.c:1540 [inline] get_page_from_freelist+0xa19/0x3740 mm/page_alloc.c:3348 __alloc_pages+0x22e/0x2410 mm/page_alloc.c:4604 alloc_pages_mpol+0x258/0x5f0 mm/mempolicy.c:2133 alloc_slab_page mm/slub.c:2191 [inline] allocate_slab mm/slub.c:2358 [inline] new_slab+0x283/0x3c0 mm/slub.c:2411 ___slab_alloc+0x4ab/0x1990 mm/slub.c:3544 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3629 __slab_alloc_node mm/slub.c:3682 [inline] slab_alloc_node mm/slub.c:3854 [inline] __do_kmalloc_node mm/slub.c:3984 [inline] __kmalloc_node_track_caller+0x367/0x470 mm/slub.c:4005 kmalloc_reserve+0xef/0x260 net/core/skbuff.c:582 __alloc_skb+0x12b/0x330 net/core/skbuff.c:651 alloc_skb include/linux/skbuff.h:1298 [inline] nlmsg_new include/net/netlink.h:1010 [inline] inet6_rt_notify+0xf0/0x2b0 net/ipv6/route.c:6171 fib6_add_rt2node net/ipv6/ip6_fib.c:1251 [inline] fib6_add+0x2301/0x4440 net/ipv6/ip6_fib.c:1477 __ip6_ins_rt net/ipv6/route.c:1303 [inline] ip6_ins_rt+0xb6/0x110 net/ipv6/route.c:1313 __ipv6_ifa_notify+0xcb1/0x10a0 net/ipv6/addrconf.c:6213 ipv6_ifa_notify net/ipv6/addrconf.c:6252 [inline] addrconf_dad_completed+0x19d/0x1030 net/ipv6/addrconf.c:4263 addrconf_dad_work+0x7f6/0x14b0 net/ipv6/addrconf.c:4211 page last free pid 923 tgid 923 stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1140 [inline] free_unref_page_prepare+0x51f/0xb10 mm/page_alloc.c:2383 free_unref_page+0x33/0x3c0 mm/page_alloc.c:2523 qlink_free mm/kasan/quarantine.c:178 [inline] qlist_free_all+0xc1/0x1e0 mm/kasan/quarantine.c:194 kasan_quarantine_reduce+0x18e/0x1d0 mm/kasan/quarantine.c:301 __kasan_slab_alloc+0x65/0x90 mm/kasan/common.c:292 kasan_slab_alloc include/linux/kasan.h:200 [inline] slab_post_alloc_hook mm/slub.c:3817 [inline] slab_alloc_node mm/slub.c:3864 [inline] kmem_cache_alloc_node+0x177/0x340 mm/slub.c:3907 __alloc_skb+0x287/0x330 net/core/skbuff.c:641 alloc_skb include/linux/skbuff.h:1298 [inline] alloc_skb_with_frags+0xe4/0x710 net/core/skbuff.c:6369 sock_alloc_send_pskb+0x7e1/0x970 net/core/sock.c:2776 sock_alloc_send_skb include/net/sock.h:1884 [inline] mld_newpack.isra.0+0x1ed/0x790 net/ipv6/mcast.c:1746 add_grhead+0x295/0x340 net/ipv6/mcast.c:1849 add_grec+0x111a/0x1670 net/ipv6/mcast.c:1987 mld_send_cr net/ipv6/mcast.c:2113 [inline] mld_ifc_work+0x41f/0xcd0 net/ipv6/mcast.c:2650 process_one_work+0x8a4/0x15f0 kernel/workqueue.c:2633 process_scheduled_works kernel/workqueue.c:2706 [inline] worker_thread+0x8b6/0x1290 kernel/workqueue.c:2787 kthread+0x2c1/0x3a0 kernel/kthread.c:388 Memory state around the buggy address: ffff8880792bb580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8880792bb600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff8880792bb680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff8880792bb700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8880792bb780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc 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