Hello, syzbot found the following issue on: HEAD commit: f40ddce8 Linux 5.11 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=17b89c34d00000 kernel config: https://syzkaller.appspot.com/x/.config?x=5528e8db7fc481ae dashboard link: https://syzkaller.appspot.com/bug?extid=44b651863a17760a893b syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14a9d40cd00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1208fccad00000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+44b651863a17760a893b@xxxxxxxxxxxxxxxxxxxxxxxxx executing program executing program BUG: memory leak unreferenced object 0xffff888110c36e00 (size 232): comm "syz-executor899", pid 8419, jiffies 4294996042 (age 38.220s) hex dump (first 32 bytes): 10 1b f0 10 81 88 ff ff 10 1b f0 10 81 88 ff ff ................ 00 00 00 00 00 00 00 00 40 1a f0 10 81 88 ff ff ........@....... backtrace: [<00000000b4534d28>] __alloc_skb+0x6d/0x280 net/core/skbuff.c:198 [<00000000a1f27cd4>] __pskb_copy_fclone+0x73/0x330 net/core/skbuff.c:1563 [<000000003311a1de>] __pskb_copy include/linux/skbuff.h:1163 [inline] [<000000003311a1de>] pskb_copy include/linux/skbuff.h:3130 [inline] [<000000003311a1de>] hwsim_hw_xmit+0xd3/0x140 drivers/net/ieee802154/mac802154_hwsim.c:132 [<00000000c07253fa>] drv_xmit_async net/mac802154/driver-ops.h:16 [inline] [<00000000c07253fa>] ieee802154_tx+0xc7/0x190 net/mac802154/tx.c:83 [<000000001b265c49>] ieee802154_subif_start_xmit+0x58/0x70 net/mac802154/tx.c:132 [<00000000908eabe9>] __netdev_start_xmit include/linux/netdevice.h:4778 [inline] [<00000000908eabe9>] netdev_start_xmit include/linux/netdevice.h:4792 [inline] [<00000000908eabe9>] xmit_one net/core/dev.c:3574 [inline] [<00000000908eabe9>] dev_hard_start_xmit+0xe1/0x330 net/core/dev.c:3590 [<000000007fbb3187>] sch_direct_xmit+0x1c5/0x500 net/sched/sch_generic.c:313 [<000000001df39c76>] qdisc_restart net/sched/sch_generic.c:376 [inline] [<000000001df39c76>] __qdisc_run+0x201/0x810 net/sched/sch_generic.c:384 [<000000002521364f>] qdisc_run include/net/pkt_sched.h:136 [inline] [<000000002521364f>] qdisc_run include/net/pkt_sched.h:128 [inline] [<000000002521364f>] __dev_xmit_skb net/core/dev.c:3765 [inline] [<000000002521364f>] __dev_queue_xmit+0xb9b/0xf60 net/core/dev.c:4119 [<00000000fe77cf74>] dgram_sendmsg+0x40c/0x4d0 net/ieee802154/socket.c:682 [<00000000f9f3520e>] sock_sendmsg_nosec net/socket.c:652 [inline] [<00000000f9f3520e>] sock_sendmsg+0x56/0x80 net/socket.c:672 [<000000005e70a8bc>] ____sys_sendmsg+0x36c/0x390 net/socket.c:2345 [<00000000e2a23226>] ___sys_sendmsg+0x8b/0xd0 net/socket.c:2399 [<000000008b9fc415>] __sys_sendmsg+0x88/0x100 net/socket.c:2432 [<0000000089dd1aab>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 [<0000000011f571a2>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff888103ae5f00 (size 232): comm "syz-executor899", pid 8428, jiffies 4294998453 (age 14.110s) hex dump (first 32 bytes): 50 1b f0 10 81 88 ff ff 50 1b f0 10 81 88 ff ff P.......P....... 00 00 00 00 00 00 00 00 80 1a f0 10 81 88 ff ff ................ backtrace: [<00000000b4534d28>] __alloc_skb+0x6d/0x280 net/core/skbuff.c:198 [<00000000a1f27cd4>] __pskb_copy_fclone+0x73/0x330 net/core/skbuff.c:1563 [<000000003311a1de>] __pskb_copy include/linux/skbuff.h:1163 [inline] [<000000003311a1de>] pskb_copy include/linux/skbuff.h:3130 [inline] [<000000003311a1de>] hwsim_hw_xmit+0xd3/0x140 drivers/net/ieee802154/mac802154_hwsim.c:132 [<00000000c07253fa>] drv_xmit_async net/mac802154/driver-ops.h:16 [inline] [<00000000c07253fa>] ieee802154_tx+0xc7/0x190 net/mac802154/tx.c:83 [<000000001b265c49>] ieee802154_subif_start_xmit+0x58/0x70 net/mac802154/tx.c:132 [<00000000908eabe9>] __netdev_start_xmit include/linux/netdevice.h:4778 [inline] [<00000000908eabe9>] netdev_start_xmit include/linux/netdevice.h:4792 [inline] [<00000000908eabe9>] xmit_one net/core/dev.c:3574 [inline] [<00000000908eabe9>] dev_hard_start_xmit+0xe1/0x330 net/core/dev.c:3590 [<000000007fbb3187>] sch_direct_xmit+0x1c5/0x500 net/sched/sch_generic.c:313 [<000000001df39c76>] qdisc_restart net/sched/sch_generic.c:376 [inline] [<000000001df39c76>] __qdisc_run+0x201/0x810 net/sched/sch_generic.c:384 [<000000002521364f>] qdisc_run include/net/pkt_sched.h:136 [inline] [<000000002521364f>] qdisc_run include/net/pkt_sched.h:128 [inline] [<000000002521364f>] __dev_xmit_skb net/core/dev.c:3765 [inline] [<000000002521364f>] __dev_queue_xmit+0xb9b/0xf60 net/core/dev.c:4119 [<00000000fe77cf74>] dgram_sendmsg+0x40c/0x4d0 net/ieee802154/socket.c:682 [<00000000f9f3520e>] sock_sendmsg_nosec net/socket.c:652 [inline] [<00000000f9f3520e>] sock_sendmsg+0x56/0x80 net/socket.c:672 [<000000005e70a8bc>] ____sys_sendmsg+0x36c/0x390 net/socket.c:2345 [<00000000e2a23226>] ___sys_sendmsg+0x8b/0xd0 net/socket.c:2399 [<000000008b9fc415>] __sys_sendmsg+0x88/0x100 net/socket.c:2432 [<0000000089dd1aab>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 [<0000000011f571a2>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff88810d717c00 (size 512): comm "syz-executor899", pid 8428, jiffies 4294998453 (age 14.110s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<0000000010ef2c1d>] __kmalloc_reserve net/core/skbuff.c:142 [inline] [<0000000010ef2c1d>] __alloc_skb+0xab/0x280 net/core/skbuff.c:210 [<00000000a1f27cd4>] __pskb_copy_fclone+0x73/0x330 net/core/skbuff.c:1563 [<000000003311a1de>] __pskb_copy include/linux/skbuff.h:1163 [inline] [<000000003311a1de>] pskb_copy include/linux/skbuff.h:3130 [inline] [<000000003311a1de>] hwsim_hw_xmit+0xd3/0x140 drivers/net/ieee802154/mac802154_hwsim.c:132 [<00000000c07253fa>] drv_xmit_async net/mac802154/driver-ops.h:16 [inline] [<00000000c07253fa>] ieee802154_tx+0xc7/0x190 net/mac802154/tx.c:83 [<000000001b265c49>] ieee802154_subif_start_xmit+0x58/0x70 net/mac802154/tx.c:132 [<00000000908eabe9>] __netdev_start_xmit include/linux/netdevice.h:4778 [inline] [<00000000908eabe9>] netdev_start_xmit include/linux/netdevice.h:4792 [inline] [<00000000908eabe9>] xmit_one net/core/dev.c:3574 [inline] [<00000000908eabe9>] dev_hard_start_xmit+0xe1/0x330 net/core/dev.c:3590 [<000000007fbb3187>] sch_direct_xmit+0x1c5/0x500 net/sched/sch_generic.c:313 [<000000001df39c76>] qdisc_restart net/sched/sch_generic.c:376 [inline] [<000000001df39c76>] __qdisc_run+0x201/0x810 net/sched/sch_generic.c:384 [<000000002521364f>] qdisc_run include/net/pkt_sched.h:136 [inline] [<000000002521364f>] qdisc_run include/net/pkt_sched.h:128 [inline] [<000000002521364f>] __dev_xmit_skb net/core/dev.c:3765 [inline] [<000000002521364f>] __dev_queue_xmit+0xb9b/0xf60 net/core/dev.c:4119 [<00000000fe77cf74>] dgram_sendmsg+0x40c/0x4d0 net/ieee802154/socket.c:682 [<00000000f9f3520e>] sock_sendmsg_nosec net/socket.c:652 [inline] [<00000000f9f3520e>] sock_sendmsg+0x56/0x80 net/socket.c:672 [<000000005e70a8bc>] ____sys_sendmsg+0x36c/0x390 net/socket.c:2345 [<00000000e2a23226>] ___sys_sendmsg+0x8b/0xd0 net/socket.c:2399 [<000000008b9fc415>] __sys_sendmsg+0x88/0x100 net/socket.c:2432 [<0000000089dd1aab>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 [<0000000011f571a2>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 --- 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@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches
