"syz-executor.0" (10941) 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 ffff88803b92dee0 by task syz-executor.0/10941 CPU: 0 PID: 10941 Comm: syz-executor.0 Not tainted 6.7.0-rc5-next-20231215-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 __sys_recvmsg+0x114/0x1e0 net/socket.c:2873 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: 0033:0x7f698227cba9 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:00007f69830100c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002f RAX: ffffffffffffffda RBX: 00007f698239bf80 RCX: 00007f698227cba9 RDX: 0000000000000000 RSI: 00000000200005c0 RDI: 0000000000000004 RBP: 00007f69822c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f698239bf80 R15: 00007fff0e6ccc88 Allocated by task 78: kasan_save_stack+0x33/0x50 mm/kasan/common.c:47 kasan_set_track+0x24/0x30 mm/kasan/common.c:61 __kasan_slab_alloc+0x81/0x90 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:188 [inline] slab_post_alloc_hook mm/slub.c:3817 [inline] slab_alloc_node mm/slub.c:3864 [inline] kmem_cache_alloc+0x136/0x320 mm/slub.c:3871 kmem_cache_zalloc include/linux/slab.h:701 [inline] __kernfs_new_node+0xd3/0x890 fs/kernfs/dir.c:615 kernfs_new_node fs/kernfs/dir.c:679 [inline] kernfs_create_dir_ns+0x9a/0x210 fs/kernfs/dir.c:1040 sysfs_create_dir_ns+0x13b/0x2b0 fs/sysfs/dir.c:59 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x2c8/0x970 lib/kobject.c:238 kset_register+0x198/0x2a0 lib/kobject.c:866 bus_register+0x1bf/0x6a0 drivers/base/bus.c:868 gpiolib_dev_init+0x1b/0x1c0 drivers/gpio/gpiolib.c:4684 do_one_initcall+0x128/0x680 init/main.c:1236 do_initcall_level init/main.c:1298 [inline] do_initcalls init/main.c:1314 [inline] do_basic_setup init/main.c:1333 [inline] kernel_init_freeable+0x692/0xc30 init/main.c:1551 kernel_init+0x1c/0x2a0 init/main.c:1441 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: kasan_save_stack+0x33/0x50 mm/kasan/common.c:47 kasan_set_track+0x24/0x30 mm/kasan/common.c:61 ____kasan_kmalloc mm/kasan/common.c:375 [inline] __kasan_kmalloc+0xa2/0xb0 mm/kasan/common.c:384 kmalloc include/linux/slab.h:590 [inline] kzalloc include/linux/slab.h:711 [inline] allocate_cgrp_cset_links+0xc6/0x230 kernel/cgroup/cgroup.c:1121 find_css_set+0x775/0x1ba0 kernel/cgroup/cgroup.c:1199 cgroup_css_set_fork kernel/cgroup/cgroup.c:6484 [inline] cgroup_can_fork+0xa10/0x1150 kernel/cgroup/cgroup.c:6553 copy_process+0x6a13/0x9770 kernel/fork.c:2588 kernel_clone+0xfd/0x940 kernel/fork.c:2899 __do_sys_clone3+0x1f1/0x260 kernel/fork.c:3200 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 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_kmalloc mm/kasan/common.c:375 [inline] __kasan_kmalloc+0xa2/0xb0 mm/kasan/common.c:384 kmalloc include/linux/slab.h:590 [inline] kzalloc include/linux/slab.h:711 [inline] ref_tracker_alloc+0x17c/0x5a0 lib/ref_tracker.c:203 __netdev_tracker_alloc include/linux/netdevice.h:4141 [inline] netdev_hold include/linux/netdevice.h:4170 [inline] netdev_hold include/linux/netdevice.h:4165 [inline] neigh_parms_alloc+0x24a/0x5d0 net/core/neighbour.c:1723 ipv6_add_dev+0x33b/0x13d0 net/ipv6/addrconf.c:396 addrconf_notify+0x542/0x19c0 net/ipv6/addrconf.c:3601 notifier_call_chain+0xb6/0x3d0 kernel/notifier.c:93 call_netdevice_notifiers_info+0xbe/0x130 net/core/dev.c:1966 call_netdevice_notifiers_extack net/core/dev.c:2004 [inline] call_netdevice_notifiers net/core/dev.c:2018 [inline] register_netdevice+0x16e2/0x1da0 net/core/dev.c:10288 cfg80211_register_netdevice+0x149/0x330 net/wireless/core.c:1437 ieee80211_if_add+0xe7a/0x1b00 net/mac80211/iface.c:2195 ieee80211_register_hw+0x3899/0x4290 net/mac80211/main.c:1418 mac80211_hwsim_new_radio+0x24f3/0x4cf0 drivers/net/wireless/virtual/mac80211_hwsim.c:5304 hwsim_new_radio_nl+0xaf9/0x1240 drivers/net/wireless/virtual/mac80211_hwsim.c:5985 genl_family_rcv_msg_doit+0x1fc/0x2e0 net/netlink/genetlink.c:972 genl_family_rcv_msg net/netlink/genetlink.c:1052 [inline] genl_rcv_msg+0x561/0x800 net/netlink/genetlink.c:1067 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2544 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1076 netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline] netlink_unicast+0x53b/0x810 net/netlink/af_netlink.c:1367 netlink_sendmsg+0x8b4/0xd70 net/netlink/af_netlink.c:1909 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0xd5/0x180 net/socket.c:745 __sys_sendto+0x225/0x310 net/socket.c:2189 __do_sys_sendto net/socket.c:2201 [inline] __se_sys_sendto net/socket.c:2197 [inline] __x64_sys_sendto+0xe0/0x1b0 net/socket.c:2197 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 The buggy address belongs to the object at ffff88803b92d800 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 [ffff88803b92d800, ffff88803b92dae0) The buggy address belongs to the physical page: page:ffffea0000ee4a00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x3b928 head:ffffea0000ee4a00 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 0xd2820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5093, tgid 5093 (syz-executor.2), ts 261208218170, free_ts 0 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x2d0/0x350 mm/page_alloc.c:1540 prep_new_page mm/page_alloc.c:1547 [inline] get_page_from_freelist+0xa19/0x3740 mm/page_alloc.c:3355 __alloc_pages+0x22e/0x2410 mm/page_alloc.c:4611 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:1257 [inline] fib6_add+0x2506/0x47d0 net/ipv6/ip6_fib.c:1483 __ip6_ins_rt net/ipv6/route.c:1303 [inline] ip6_route_add+0x8d/0x190 net/ipv6/route.c:3847 addrconf_prefix_route+0x2fe/0x510 net/ipv6/addrconf.c:2445 inet6_addr_add+0x605/0xbe0 net/ipv6/addrconf.c:3012 inet6_rtm_newaddr+0x11da/0x1ab0 net/ipv6/addrconf.c:4984 page_owner free stack trace missing Memory state around the buggy address: ffff88803b92dd80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88803b92de00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88803b92de80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88803b92df00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88803b92df80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc 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