Hello, syzbot found the following issue on: HEAD commit: 7266f203 Merge tag 'pm-5.13-rc8' of git://git.kernel.org/p.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=16e22d34300000 kernel config: https://syzkaller.appspot.com/x/.config?x=3aac8c6ef370586a dashboard link: https://syzkaller.appspot.com/bug?extid=085305c4b952053c9437 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11e0d6a4300000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13528400300000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+085305c4b952053c9437@xxxxxxxxxxxxxxxxxxxxxxxxx BUG: memory leak unreferenced object 0xffff888112d44400 (size 232): comm "syz-executor006", pid 8628, jiffies 4294942391 (age 8.470s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 80 d7 0f 81 88 ff ff 00 64 db 16 81 88 ff ff .........d...... backtrace: [<ffffffff836a0f8f>] __alloc_skb+0x20f/0x280 net/core/skbuff.c:413 [<ffffffff836ac44a>] alloc_skb include/linux/skbuff.h:1107 [inline] [<ffffffff836ac44a>] alloc_skb_with_frags+0x6a/0x2c0 net/core/skbuff.c:5992 [<ffffffff83699e63>] sock_alloc_send_pskb+0x353/0x3c0 net/core/sock.c:2364 [<ffffffff83c54592>] j1939_sk_alloc_skb net/can/j1939/socket.c:858 [inline] [<ffffffff83c54592>] j1939_sk_send_loop net/can/j1939/socket.c:1040 [inline] [<ffffffff83c54592>] j1939_sk_sendmsg+0x2e2/0x7d0 net/can/j1939/socket.c:1175 [<ffffffff83690ad6>] sock_sendmsg_nosec net/socket.c:654 [inline] [<ffffffff83690ad6>] sock_sendmsg+0x56/0x80 net/socket.c:674 [<ffffffff83696e9f>] sock_no_sendpage+0x8f/0xc0 net/core/sock.c:2862 [<ffffffff836903db>] kernel_sendpage.part.0+0xeb/0x150 net/socket.c:3618 [<ffffffff836910bb>] kernel_sendpage net/socket.c:3615 [inline] [<ffffffff836910bb>] sock_sendpage+0x5b/0x90 net/socket.c:947 [<ffffffff815b8862>] pipe_to_sendpage+0xa2/0x110 fs/splice.c:364 [<ffffffff815ba702>] splice_from_pipe_feed fs/splice.c:418 [inline] [<ffffffff815ba702>] __splice_from_pipe+0x1e2/0x330 fs/splice.c:562 [<ffffffff815baf2f>] splice_from_pipe fs/splice.c:597 [inline] [<ffffffff815baf2f>] generic_splice_sendpage+0x6f/0xa0 fs/splice.c:746 [<ffffffff815b891b>] do_splice_from fs/splice.c:767 [inline] [<ffffffff815b891b>] direct_splice_actor+0x4b/0x70 fs/splice.c:936 [<ffffffff815b9033>] splice_direct_to_actor+0x153/0x350 fs/splice.c:891 [<ffffffff815b9318>] do_splice_direct+0xe8/0x150 fs/splice.c:979 [<ffffffff8155a64f>] do_sendfile+0x51f/0x760 fs/read_write.c:1260 [<ffffffff8155cf82>] __do_sys_sendfile64 fs/read_write.c:1325 [inline] [<ffffffff8155cf82>] __se_sys_sendfile64 fs/read_write.c:1311 [inline] [<ffffffff8155cf82>] __x64_sys_sendfile64+0xe2/0x100 fs/read_write.c:1311 BUG: memory leak unreferenced object 0xffff888116d2d800 (size 1024): comm "syz-executor006", pid 8628, jiffies 4294942391 (age 8.470s) hex dump (first 32 bytes): 0d 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: [<ffffffff836a0e5f>] kmalloc_reserve net/core/skbuff.c:354 [inline] [<ffffffff836a0e5f>] __alloc_skb+0xdf/0x280 net/core/skbuff.c:425 [<ffffffff836ac44a>] alloc_skb include/linux/skbuff.h:1107 [inline] [<ffffffff836ac44a>] alloc_skb_with_frags+0x6a/0x2c0 net/core/skbuff.c:5992 [<ffffffff83699e63>] sock_alloc_send_pskb+0x353/0x3c0 net/core/sock.c:2364 [<ffffffff83c54592>] j1939_sk_alloc_skb net/can/j1939/socket.c:858 [inline] [<ffffffff83c54592>] j1939_sk_send_loop net/can/j1939/socket.c:1040 [inline] [<ffffffff83c54592>] j1939_sk_sendmsg+0x2e2/0x7d0 net/can/j1939/socket.c:1175 [<ffffffff83690ad6>] sock_sendmsg_nosec net/socket.c:654 [inline] [<ffffffff83690ad6>] sock_sendmsg+0x56/0x80 net/socket.c:674 [<ffffffff83696e9f>] sock_no_sendpage+0x8f/0xc0 net/core/sock.c:2862 [<ffffffff836903db>] kernel_sendpage.part.0+0xeb/0x150 net/socket.c:3618 [<ffffffff836910bb>] kernel_sendpage net/socket.c:3615 [inline] [<ffffffff836910bb>] sock_sendpage+0x5b/0x90 net/socket.c:947 [<ffffffff815b8862>] pipe_to_sendpage+0xa2/0x110 fs/splice.c:364 [<ffffffff815ba702>] splice_from_pipe_feed fs/splice.c:418 [inline] [<ffffffff815ba702>] __splice_from_pipe+0x1e2/0x330 fs/splice.c:562 [<ffffffff815baf2f>] splice_from_pipe fs/splice.c:597 [inline] [<ffffffff815baf2f>] generic_splice_sendpage+0x6f/0xa0 fs/splice.c:746 [<ffffffff815b891b>] do_splice_from fs/splice.c:767 [inline] [<ffffffff815b891b>] direct_splice_actor+0x4b/0x70 fs/splice.c:936 [<ffffffff815b9033>] splice_direct_to_actor+0x153/0x350 fs/splice.c:891 [<ffffffff815b9318>] do_splice_direct+0xe8/0x150 fs/splice.c:979 [<ffffffff8155a64f>] do_sendfile+0x51f/0x760 fs/read_write.c:1260 [<ffffffff8155cf82>] __do_sys_sendfile64 fs/read_write.c:1325 [inline] [<ffffffff8155cf82>] __se_sys_sendfile64 fs/read_write.c:1311 [inline] [<ffffffff8155cf82>] __x64_sys_sendfile64+0xe2/0x100 fs/read_write.c:1311 BUG: memory leak unreferenced object 0xffff888111010d00 (size 232): comm "syz-executor006", pid 8628, jiffies 4294942391 (age 8.470s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 80 d7 0f 81 88 ff ff 00 64 db 16 81 88 ff ff .........d...... backtrace: [<ffffffff836a0f8f>] __alloc_skb+0x20f/0x280 net/core/skbuff.c:413 [<ffffffff836ac44a>] alloc_skb include/linux/skbuff.h:1107 [inline] [<ffffffff836ac44a>] alloc_skb_with_frags+0x6a/0x2c0 net/core/skbuff.c:5992 [<ffffffff83699e63>] sock_alloc_send_pskb+0x353/0x3c0 net/core/sock.c:2364 [<ffffffff83c54592>] j1939_sk_alloc_skb net/can/j1939/socket.c:858 [inline] [<ffffffff83c54592>] j1939_sk_send_loop net/can/j1939/socket.c:1040 [inline] [<ffffffff83c54592>] j1939_sk_sendmsg+0x2e2/0x7d0 net/can/j1939/socket.c:1175 [<ffffffff83690ad6>] sock_sendmsg_nosec net/socket.c:654 [inline] [<ffffffff83690ad6>] sock_sendmsg+0x56/0x80 net/socket.c:674 [<ffffffff83696e9f>] sock_no_sendpage+0x8f/0xc0 net/core/sock.c:2862 [<ffffffff836903db>] kernel_sendpage.part.0+0xeb/0x150 net/socket.c:3618 [<ffffffff836910bb>] kernel_sendpage net/socket.c:3615 [inline] [<ffffffff836910bb>] sock_sendpage+0x5b/0x90 net/socket.c:947 [<ffffffff815b8862>] pipe_to_sendpage+0xa2/0x110 fs/splice.c:364 [<ffffffff815ba702>] splice_from_pipe_feed fs/splice.c:418 [inline] [<ffffffff815ba702>] __splice_from_pipe+0x1e2/0x330 fs/splice.c:562 [<ffffffff815baf2f>] splice_from_pipe fs/splice.c:597 [inline] [<ffffffff815baf2f>] generic_splice_sendpage+0x6f/0xa0 fs/splice.c:746 [<ffffffff815b891b>] do_splice_from fs/splice.c:767 [inline] [<ffffffff815b891b>] direct_splice_actor+0x4b/0x70 fs/splice.c:936 [<ffffffff815b9033>] splice_direct_to_actor+0x153/0x350 fs/splice.c:891 [<ffffffff815b9318>] do_splice_direct+0xe8/0x150 fs/splice.c:979 [<ffffffff8155a64f>] do_sendfile+0x51f/0x760 fs/read_write.c:1260 [<ffffffff8155cf82>] __do_sys_sendfile64 fs/read_write.c:1325 [inline] [<ffffffff8155cf82>] __se_sys_sendfile64 fs/read_write.c:1311 [inline] [<ffffffff8155cf82>] __x64_sys_sendfile64+0xe2/0x100 fs/read_write.c:1311 --- This report is generated by a bot. 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