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List-Unsubscribe: Hello, syzbot found the following issue on: HEAD commit: 052d534373b7 Merge tag 'exfat-for-6.8-rc1' of git://git.ke.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=14620debe80000 kernel config: https://syzkaller.appspot.com/x/.config?x=a7031f9e71583b4a dashboard link: https://syzkaller.appspot.com/bug?extid=ebe64cc5950868e77358 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16a344c1e80000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/82a7201eef4c/disk-052d5343.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/ca12b4c31826/vmlinux-052d5343.xz kernel image: https://storage.googleapis.com/syzbot-assets/3f07360ba5a8/bzImage-052d5343.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+ebe64cc5950868e77358@syzkaller.appspotmail.com BUG: memory leak unreferenced object 0xffff88811c71a980 (size 64): comm "syz-executor.7", pid 5063, jiffies 4294953937 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 20 8e 7e 1c 81 88 ff ff ........ .~..... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc 9f8721dd): [] kmemleak_alloc_recursive include/linux/kmemleak.h:42 [inline] [] slab_post_alloc_hook mm/slub.c:3817 [inline] [] slab_alloc_node mm/slub.c:3860 [inline] [] kmalloc_trace+0x283/0x330 mm/slub.c:4007 [] kmalloc include/linux/slab.h:590 [inline] [] kzalloc include/linux/slab.h:711 [inline] [] batadv_tvlv_handler_register+0xf7/0x2a0 net/batman-adv/tvlv.c:560 [] batadv_mcast_init+0x4f/0xc0 net/batman-adv/multicast.c:1926 [] batadv_mesh_init+0x209/0x2f0 net/batman-adv/main.c:231 [] batadv_softif_init_late+0x1f8/0x280 net/batman-adv/soft-interface.c:812 [] register_netdevice+0x189/0xca0 net/core/dev.c:10188 [] batadv_softif_newlink+0x55/0x70 net/batman-adv/soft-interface.c:1088 [] rtnl_newlink_create net/core/rtnetlink.c:3515 [inline] [] __rtnl_newlink+0xb10/0xec0 net/core/rtnetlink.c:3735 [] rtnl_newlink+0x4c/0x70 net/core/rtnetlink.c:3748 [] rtnetlink_rcv_msg+0x22f/0x5b0 net/core/rtnetlink.c:6615 [] netlink_rcv_skb+0x91/0x1d0 net/netlink/af_netlink.c:2543 [] netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline] [] netlink_unicast+0x2c2/0x440 net/netlink/af_netlink.c:1367 [] netlink_sendmsg+0x341/0x690 net/netlink/af_netlink.c:1908 [] sock_sendmsg_nosec net/socket.c:730 [inline] [] __sock_sendmsg+0x52/0xa0 net/socket.c:745 [] __sys_sendto+0x164/0x1e0 net/socket.c:2191 [] __do_sys_sendto net/socket.c:2203 [inline] [] __se_sys_sendto net/socket.c:2199 [inline] [] __x64_sys_sendto+0x28/0x30 net/socket.c:2199 BUG: memory leak unreferenced object 0xffff88811c8561c0 (size 64): comm "syz-executor.0", pid 5062, jiffies 4294953941 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 20 ce 7e 1c 81 88 ff ff ........ .~..... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc 7256c890): [] kmemleak_alloc_recursive include/linux/kmemleak.h:42 [inline] [] slab_post_alloc_hook mm/slub.c:3817 [inline] [] slab_alloc_node mm/slub.c:3860 [inline] [] kmalloc_trace+0x283/0x330 mm/slub.c:4007 [] kmalloc include/linux/slab.h:590 [inline] [] kzalloc include/linux/slab.h:711 [inline] [] batadv_tvlv_handler_register+0xf7/0x2a0 net/batman-adv/tvlv.c:560 [] batadv_mcast_init+0x4f/0xc0 net/batman-adv/multicast.c:1926 [] batadv_mesh_init+0x209/0x2f0 net/batman-adv/main.c:231 [] batadv_softif_init_late+0x1f8/0x280 net/batman-adv/soft-interface.c:812 [] register_netdevice+0x189/0xca0 net/core/dev.c:10188 [] batadv_softif_newlink+0x55/0x70 net/batman-adv/soft-interface.c:1088 [] rtnl_newlink_create net/core/rtnetlink.c:3515 [inline] [] __rtnl_newlink+0xb10/0xec0 net/core/rtnetlink.c:3735 [] rtnl_newlink+0x4c/0x70 net/core/rtnetlink.c:3748 [] rtnetlink_rcv_msg+0x22f/0x5b0 net/core/rtnetlink.c:6615 [] netlink_rcv_skb+0x91/0x1d0 net/netlink/af_netlink.c:2543 [] netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline] [] netlink_unicast+0x2c2/0x440 net/netlink/af_netlink.c:1367 [] netlink_sendmsg+0x341/0x690 net/netlink/af_netlink.c:1908 [] sock_sendmsg_nosec net/socket.c:730 [inline] [] __sock_sendmsg+0x52/0xa0 net/socket.c:745 [] __sys_sendto+0x164/0x1e0 net/socket.c:2191 [] __do_sys_sendto net/socket.c:2203 [inline] [] __se_sys_sendto net/socket.c:2199 [inline] [] __x64_sys_sendto+0x28/0x30 net/socket.c:2199 BUG: memory leak unreferenced object 0xffff88811cd88cc0 (size 64): comm "syz-executor.5", pid 5078, jiffies 4294953981 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 20 8e 05 1d 81 88 ff ff ........ ....... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc a919e6d6): [] kmemleak_alloc_recursive include/linux/kmemleak.h:42 [inline] [] slab_post_alloc_hook mm/slub.c:3817 [inline] [] slab_alloc_node mm/slub.c:3860 [inline] [] kmalloc_trace+0x283/0x330 mm/slub.c:4007 [] kmalloc include/linux/slab.h:590 [inline] [] kzalloc include/linux/slab.h:711 [inline] [] batadv_tvlv_handler_register+0xf7/0x2a0 net/batman-adv/tvlv.c:560 [] batadv_mcast_init+0x4f/0xc0 net/batman-adv/multicast.c:1926 [] batadv_mesh_init+0x209/0x2f0 net/batman-adv/main.c:231 [] batadv_softif_init_late+0x1f8/0x280 net/batman-adv/soft-interface.c:812 [] register_netdevice+0x189/0xca0 net/core/dev.c:10188 [] batadv_softif_newlink+0x55/0x70 net/batman-adv/soft-interface.c:1088 [] rtnl_newlink_create net/core/rtnetlink.c:3515 [inline] [] __rtnl_newlink+0xb10/0xec0 net/core/rtnetlink.c:3735 [] rtnl_newlink+0x4c/0x70 net/core/rtnetlink.c:3748 [] rtnetlink_rcv_msg+0x22f/0x5b0 net/core/rtnetlink.c:6615 [] netlink_rcv_skb+0x91/0x1d0 net/netlink/af_netlink.c:2543 [] netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline] [] netlink_unicast+0x2c2/0x440 net/netlink/af_netlink.c:1367 [] netlink_sendmsg+0x341/0x690 net/netlink/af_netlink.c:1908 [] sock_sendmsg_nosec net/socket.c:730 [inline] [] __sock_sendmsg+0x52/0xa0 net/socket.c:745 [] __sys_sendto+0x164/0x1e0 net/socket.c:2191 [] __do_sys_sendto net/socket.c:2203 [inline] [] __se_sys_sendto net/socket.c:2199 [inline] [] __x64_sys_sendto+0x28/0x30 net/socket.c:2199 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup