Open
Description
I got it only once, no reproducers so far, on top of export/20250514T082830 (47d0112).
audit: type=1400 audit(1747616140.211:78): avc: denied { block_suspend } for pid=7923 comm="syz.5.1465" capability=36 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1
program syz.8.1486 is using a deprecated SCSI ioctl, please convert it to SG_IO
------------[ cut here ]------------
WARNING: CPU: 1 PID: 8026 at net/mptcp/pm.c:352 mptcp_pm_alloc_anno_list+0x3d1/0x4a0 net/mptcp/pm.c:352
Modules linked in:
CPU: 1 UID: 0 PID: 8026 Comm: syz.6.1489 Not tainted 6.15.0-rc5-g47d01129b03a #10 PREEMPT(voluntary)
Hardware name: QEMU Ubuntu 24.04 PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:mptcp_pm_alloc_anno_list+0x3d1/0x4a0 net/mptcp/pm.c:352
Code: e8 03 80 3c 10 00 75 7c 48 8b 05 1a 4d ff 00 48 89 de 4c 89 ef 48 8d 54 05 00 e8 8a e0 27 ff e9 a3 fd ff ff e8 10 ec eb fc 90 <0f> 0b 90 31 db e9 98 fd ff ff 48 89 df e8 8d a5 22 fd e9 b1 fc ff
RSP: 0018:ffff88802d88f108 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff8880082b4900 RCX: ffffffff84818a0e
RDX: ffff888060cfd640 RSI: ffffffff84818cc0 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 00000000000a000d R12: ffff88802d043018
R13: ffff88802d042940 R14: dffffc0000000000 R15: 0000000000000001
FS: 00007fe5d10276c0(0000) GS:ffff88811cccc000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe5d2b93480 CR3: 00000000086db000 CR4: 0000000000350ef0
Call Trace:
<TASK>
mptcp_pm_create_subflow_or_signal_addr+0x74f/0x1870 net/mptcp/pm_kernel.c:318
mptcp_nl_add_subflow_or_signal_addr net/mptcp/pm_kernel.c:761 [inline]
mptcp_pm_nl_add_addr_doit+0x5c4/0xcd0 net/mptcp/pm_kernel.c:841
genl_family_rcv_msg_doit+0x209/0x2f0 net/netlink/genetlink.c:1115
genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline]
genl_rcv_msg+0x557/0x7f0 net/netlink/genetlink.c:1210
netlink_rcv_skb+0x167/0x410 net/netlink/af_netlink.c:2534
genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219
netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]
netlink_unicast+0x6d2/0x8f0 net/netlink/af_netlink.c:1339
netlink_sendmsg+0x87d/0xd50 net/netlink/af_netlink.c:1883
sock_sendmsg_nosec net/socket.c:712 [inline]
__sock_sendmsg net/socket.c:727 [inline]
____sys_sendmsg+0x983/0xb20 net/socket.c:2566
___sys_sendmsg+0x134/0x1d0 net/socket.c:2620
__sys_sendmsg+0x16d/0x220 net/socket.c:2652
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x9e/0x1a0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe5d29d36ed
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 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:00007fe5d1027018 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fe5d2c15fa0 RCX: 00007fe5d29d36ed
RDX: 0000000000000080 RSI: 0000200000000380 RDI: 0000000000000004
RBP: 00007fe5d2a77722 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fe5d2c15fa0 R15: 00007fff48fbe4f0
</TASK>
---[ end trace 0000000000000000 ]---