mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium loop0: detected capacity change from 0 to 128 ================================================================== BUG: KASAN: slab-out-of-bounds in init_module_from_file+0x630/0x6b0 Read of size 8 at addr ffff888041a8fe20 by task syz-executor.3/4379 CPU: 0 PID: 4379 Comm: syz-executor.3 Not tainted 6.4.0-next-20230703 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: dump_stack_lvl+0x91/0xf0 print_report+0xcc/0x620 kasan_report+0xbe/0xf0 init_module_from_file+0x630/0x6b0 __x64_sys_finit_module+0xee/0x160 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 RIP: 0033:0x7fe9a5dbdb19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48 FAT-fs (loop1): Unrecognized mount option "utf8=1Lù’ð¬ˆÌÁ" or missing value RSP: 002b:00007fe9a3333188 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 RAX: ffffffffffffffda RBX: 00007fe9a5ed0f60 RCX: 00007fe9a5dbdb19 RDX: 0000000000000001 RSI: 0000000020000140 RDI: 0000000000000003 RBP: 00007fe9a5e17f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdd052d29f R14: 00007fe9a3333300 R15: 0000000000022000 Allocated by task 3765: kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 __kasan_kmalloc+0x7f/0x90 __kmalloc+0x5a/0x160 ieee802_11_parse_elems_full+0xcc/0x11d0 ieee80211_ibss_rx_queued_mgmt+0xd23/0x2e70 ieee80211_iface_work+0x9bf/0xcb0 cfg80211_wiphy_work+0x1f7/0x290 process_one_work+0xabf/0x1770 worker_thread+0x64f/0x12a0 kthread+0x33f/0x440 ret_from_fork+0x2c/0x50 Freed by task 3765: kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 kasan_save_free_info+0x2b/0x50 __kasan_slab_free+0x10a/0x190 __kmem_cache_free+0xe1/0x330 ieee80211_ibss_rx_queued_mgmt+0x1ab8/0x2e70 ieee80211_iface_work+0x9bf/0xcb0 cfg80211_wiphy_work+0x1f7/0x290 process_one_work+0xabf/0x1770 worker_thread+0x64f/0x12a0 kthread+0x33f/0x440 ret_from_fork+0x2c/0x50 The buggy address belongs to the object at ffff888041a8f800 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 544 bytes to the right of allocated 1024-byte region [ffff888041a8f800, ffff888041a8fc00) The buggy address belongs to the physical page: page:0000000040d40baa refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x41a88 head:0000000040d40baa order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0x100000000010200(slab|head|node=0|zone=1) page_type: 0xffffffff() raw: 0100000000010200 ffff888008441dc0 dead000000000122 0000000000000000 raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff888041a8fd00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888041a8fd80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff888041a8fe00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff888041a8fe80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888041a8ff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== general protection fault, probably for non-canonical address 0xeac826e83f43c1fd: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: maybe wild-memory-access in range [0x56415741fa1e0fe8-0x56415741fa1e0fef] CPU: 0 PID: 4379 Comm: syz-executor.3 Tainted: G B 6.4.0-next-20230703 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:init_module_from_file+0x1c1/0x6b0 Code: 0f 84 c4 01 00 00 e8 5e 36 12 00 4d 89 e7 49 83 ef 08 74 61 e8 50 36 12 00 4c 89 fa 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 5d 04 00 00 4d 3b 2f 0f 84 ae 00 00 00 e8 27 36 RSP: 0018:ffff888043ed7d28 EFLAGS: 00010212 RAX: dffffc0000000000 RBX: 00000000000000a0 RCX: ffffc9000700b000 RDX: 0ac82ae83f43c1fd RSI: ffffffff813a30d0 RDI: ffffffff810811d0 RBP: ffff8880094e6500 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888041a8fe28 R13: ffff888015de4000 R14: ffffffff87b7c1a0 R15: 56415741fa1e0feb FS: 00007fe9a3333700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000140 CR3: 000000004028e000 CR4: 0000000000350ef0 Call Trace: __x64_sys_finit_module+0xee/0x160 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 RIP: 0033:0x7fe9a5dbdb19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fe9a3333188 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 RAX: ffffffffffffffda RBX: 00007fe9a5ed0f60 RCX: 00007fe9a5dbdb19 RDX: 0000000000000001 RSI: 0000000020000140 RDI: 0000000000000003 RBP: 00007fe9a5e17f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdd052d29f R14: 00007fe9a3333300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:init_module_from_file+0x1c1/0x6b0 Code: 0f 84 c4 01 00 00 e8 5e 36 12 00 4d 89 e7 49 83 ef 08 74 61 e8 50 36 12 00 4c 89 fa 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 5d 04 00 00 4d 3b 2f 0f 84 ae 00 00 00 e8 27 36 RSP: 0018:ffff888043ed7d28 EFLAGS: 00010212 RAX: dffffc0000000000 RBX: 00000000000000a0 RCX: ffffc9000700b000 RDX: 0ac82ae83f43c1fd RSI: ffffffff813a30d0 RDI: ffffffff810811d0 RBP: ffff8880094e6500 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888041a8fe28 R13: ffff888015de4000 R14: ffffffff87b7c1a0 R15: 56415741fa1e0feb FS: 00007fe9a3333700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000140 CR3: 000000004028e000 CR4: 0000000000350ef0 note: syz-executor.3[4379] exited with preempt_count 1 netlink: 36 bytes leftover after parsing attributes in process `syz-executor.4'. mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium netlink: 36 bytes leftover after parsing attributes in process `syz-executor.0'. mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium loop4: detected capacity change from 0 to 128 mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium loop0: detected capacity change from 0 to 128 FAT-fs (loop1): Unrecognized mount option "utf8=1Lù’ð¬ˆÌÁ" or missing value FAT-fs (loop6): Unrecognized mount option "utf8=1Lù’ð¬ˆÌÁ" or missing value FAT-fs (loop1): Unrecognized mount option "utf8=1Lù’ð¬ˆÌÁ" or missing value netlink: 36 bytes leftover after parsing attributes in process `syz-executor.0'. mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium loop0: detected capacity change from 0 to 128 ---------------- Code disassembly (best guess): 0: 0f 84 c4 01 00 00 je 0x1ca 6: e8 5e 36 12 00 callq 0x123669 b: 4d 89 e7 mov %r12,%r15 e: 49 83 ef 08 sub $0x8,%r15 12: 74 61 je 0x75 14: e8 50 36 12 00 callq 0x123669 19: 4c 89 fa mov %r15,%rdx 1c: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 23: fc ff df 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 5d 04 00 00 jne 0x491 34: 4d 3b 2f cmp (%r15),%r13 37: 0f 84 ae 00 00 00 je 0xeb 3d: e8 .byte 0xe8 3e: 27 (bad) 3f: 36 ss