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e38b55ea04
Fix NULL pointer dereference in the error flow of ib_create_qp_user
when accessing to uninitialized list pointers - rdma_mrs and sig_mrs.
The following crash from syzkaller revealed it.
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] SMP KASAN PTI
CPU: 1 PID: 23167 Comm: syz-executor.1 Not tainted 5.5.0-rc5 #2
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014
RIP: 0010:ib_mr_pool_destroy+0x81/0x1f0
Code: 00 00 fc ff df 49 c1 ec 03 4d 01 fc e8 a8 ea 72 fe 41 80 3c 24 00
0f 85 62 01 00 00 48 8b 13 48 89 d6 4c 8d 6a c8 48 c1 ee 03 <42> 80 3c
3e 00 0f 85 34 01 00 00 48 8d 7a 08 4c 8b 02 48 89 fe 48
RSP: 0018:ffffc9000951f8b0 EFLAGS: 00010046
RAX: 0000000000040000 RBX: ffff88810f268038 RCX: ffffffff82c41628
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc9000951f850
RBP: ffff88810f268020 R08: 0000000000000004 R09: fffff520012a3f0a
R10: 0000000000000001 R11: fffff520012a3f0a R12: ffffed1021e4d007
R13: ffffffffffffffc8 R14: 0000000000000246 R15: dffffc0000000000
FS: 00007f54bc788700(0000) GS:ffff88811b100000(0000)
knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000116920002 CR4: 0000000000360ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rdma_rw_cleanup_mrs+0x15/0x30
ib_destroy_qp_user+0x674/0x7d0
ib_create_qp_user+0xb01/0x11c0
create_qp+0x1517/0x2130
ib_uverbs_create_qp+0x13e/0x190
ib_uverbs_write+0xaa5/0xdf0
__vfs_write+0x7c/0x100
vfs_write+0x168/0x4a0
ksys_write+0xc8/0x200
do_syscall_64+0x9c/0x390
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x465b49
Code: f7 d8 64 89 02 b8 ff ff ff ff c3 66 0f 1f 44 00 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:00007f54bc787c58 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000073bf00 RCX: 0000000000465b49
RDX: 0000000000000040 RSI: 0000000020000540 RDI: 0000000000000003
RBP: 00007f54bc787c70 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f54bc7886bc
R13: 00000000004ca2ec R14: 000000000070ded0 R15: 0000000000000005
Fixes:
|
||
|---|---|---|
| .. | ||
| addr.c | ||
| agent.c | ||
| agent.h | ||
| cache.c | ||
| cgroup.c | ||
| cm_msgs.h | ||
| cm.c | ||
| cma_configfs.c | ||
| cma_priv.h | ||
| cma_trace.c | ||
| cma_trace.h | ||
| cma.c | ||
| core_priv.h | ||
| counters.c | ||
| cq.c | ||
| device.c | ||
| fmr_pool.c | ||
| ib_core_uverbs.c | ||
| iwcm.c | ||
| iwcm.h | ||
| iwpm_msg.c | ||
| iwpm_util.c | ||
| iwpm_util.h | ||
| mad_priv.h | ||
| mad_rmpp.c | ||
| mad_rmpp.h | ||
| mad.c | ||
| Makefile | ||
| mr_pool.c | ||
| multicast.c | ||
| netlink.c | ||
| nldev.c | ||
| opa_smi.h | ||
| packer.c | ||
| rdma_core.c | ||
| rdma_core.h | ||
| restrack.c | ||
| restrack.h | ||
| roce_gid_mgmt.c | ||
| rw.c | ||
| sa_query.c | ||
| sa.h | ||
| security.c | ||
| smi.c | ||
| smi.h | ||
| sysfs.c | ||
| trace.c | ||
| ucma.c | ||
| ud_header.c | ||
| umem_odp.c | ||
| umem.c | ||
| user_mad.c | ||
| uverbs_cmd.c | ||
| uverbs_ioctl.c | ||
| uverbs_main.c | ||
| uverbs_marshall.c | ||
| uverbs_std_types_async_fd.c | ||
| uverbs_std_types_counters.c | ||
| uverbs_std_types_cq.c | ||
| uverbs_std_types_device.c | ||
| uverbs_std_types_dm.c | ||
| uverbs_std_types_flow_action.c | ||
| uverbs_std_types_mr.c | ||
| uverbs_std_types.c | ||
| uverbs_uapi.c | ||
| uverbs.h | ||
| verbs.c | ||