From: syzbot <syzbot+7d26fc1eea198488deab@syzkaller.appspotmail.com>
To: Ben Hutchings <ben@decadent.org.uk>
Cc: akpm@linux-foundation.org, ben@decadent.org.uk,
dgilbert@interlog.com, glider@google.com, jthumshirn@suse.de,
linux-kernel@vger.kernel.org, martin.petersen@oracle.com,
stable@vger.kernel.org
Subject: Re: [PATCH 3.16 20/63] scsi: sg: allocate with __GFP_ZERO in sg_build_indirect()
Date: Fri, 21 Sep 2018 17:19:35 -0700 [thread overview]
Message-ID: <000000000000025c4a05766ab6be@google.com> (raw)
In-Reply-To: <lsq.1537575342.495565532@decadent.org.uk>
> 3.16.58-rc1 review patch. If anyone has any objections, please let me
> know.
> ------------------
> From: Alexander Potapenko <glider@google.com>
> commit a45b599ad808c3c982fdcdc12b0b8611c2f92824 upstream.
> This shall help avoid copying uninitialized memory to the userspace when
> calling ioctl(fd, SG_IO) with an empty command.
> Reported-by: syzbot+7d26fc1eea198488deab@syzkaller.appspotmail.com
> Signed-off-by: Alexander Potapenko <glider@google.com>
> Acked-by: Douglas Gilbert <dgilbert@interlog.com>
> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
> ---
> drivers/scsi/sg.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
> --- a/drivers/scsi/sg.c
> +++ b/drivers/scsi/sg.c
> @@ -1825,7 +1825,7 @@ retry:
> num = (rem_sz > scatter_elem_sz_prev) ?
> scatter_elem_sz_prev : rem_sz;
> - schp->pages[k] = alloc_pages(gfp_mask, order);
> + schp->pages[k] = alloc_pages(gfp_mask | __GFP_ZERO, order);
> if (!schp->pages[k])
> goto out;
Can't find the corresponding bug.
next prev parent reply other threads:[~2018-09-22 0:19 UTC|newest]
Thread overview: 71+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-22 0:15 [PATCH 3.16 00/63] 3.16.58-rc1 review Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 51/63] xfs: catch inode allocation state mismatch corruption Ben Hutchings
2018-09-22 5:25 ` Dave Chinner
2018-09-22 20:57 ` Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 07/63] usbip: usbip_host: refine probe and disconnect debug msgs to be useful Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 41/63] USB: yurex: fix out-of-bounds uaccess in read handler Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 54/63] seccomp: create internal mode-setting function Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 45/63] x86/paravirt: Fix spectre-v2 mitigations for paravirt guests Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 36/63] jbd2: don't mark block as modified if the handle is out of credits Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 18/63] sr: pass down correctly sized SCSI sense buffer Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 06/63] usbip: usbip_host: fix to hold parent lock for device_attach() calls Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 29/63] ext4: make sure bitmaps and the inode table don't overlap with bg descriptors Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 63/63] mm: get rid of vmacache_flush_all() entirely Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 26/63] ext4: verify the depth of extent tree in ext4_find_extent() Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 38/63] Fix up non-directory creation in SGID directories Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 56/63] seccomp: split mode setting routines Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 13/63] futex: Remove unnecessary warning from get_futex_key Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 21/63] Bluetooth: hidp: buffer overflow in hidp_process_report Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 32/63] ext4: always verify the magic number in xattr blocks Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 23/63] xfs: set format back to extents if xfs_bmap_extents_to_btree Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 08/63] usbip: usbip_host: delete device from busid_table after rebind Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 60/63] x86/cpu/AMD: Fix erratum 1076 (CPB bit) Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 57/63] seccomp: add "seccomp" syscall Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 20/63] scsi: sg: allocate with __GFP_ZERO in sg_build_indirect() Ben Hutchings
2018-09-22 0:19 ` syzbot [this message]
2018-09-22 0:15 ` [PATCH 3.16 04/63] net: Set sk_prot_creator when cloning sockets to the right proto Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 33/63] ext4: never move the system.data xattr out of the inode body Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 55/63] seccomp: extract check/assign mode helpers Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 16/63] KVM: x86: pass kvm_vcpu to kvm_read_guest_virt and kvm_write_guest_virt_system Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 35/63] ext4: add more inode number paranoia checks Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 42/63] ALSA: rawmidi: Change resized buffers atomically Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 27/63] ext4: always check block group bounds in ext4_init_block_bitmap() Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 25/63] ext4: fix check to prevent initializing reserved inodes Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 14/63] KVM: x86: Emulator ignores LDTR/TR extended base on LLDT/LTR Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 15/63] KVM: x86: introduce linear_{read,write}_system Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 61/63] x86/cpu/intel: Add Knights Mill to Intel family Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 40/63] infiniband: fix a possible use-after-free bug Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 09/63] usbip: usbip_host: run rebind from exit when module is removed Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 11/63] usbip: usbip_host: fix bad unlock balance during stub_probe() Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 12/63] futex: Remove requirement for lock_page() in get_futex_key() Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 30/63] ext4: fix false negatives *and* false positives in ext4_check_descriptors() Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 37/63] ext4: avoid running out of journal credits when appending to an inline file Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 47/63] uas: replace WARN_ON_ONCE() with lockdep_assert_held() Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 44/63] x86/speculation: Protect against userspace-userspace spectreRSB Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 49/63] btrfs: relocation: Only remove reloc rb_trees if reloc control has been initialized Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 24/63] ext4: only look at the bg_flags field if it is valid Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 53/63] xfs: don't call xfs_da_shrink_inode with NULL bp Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 17/63] kvm: x86: use correct privilege level for sgdt/sidt/fxsave/fxrstor access Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 43/63] x86/speculation: Clean up various Spectre related details Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 52/63] xfs: validate cached inodes are free when allocated Ben Hutchings
2018-09-22 5:26 ` Dave Chinner
2018-09-22 20:57 ` Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 48/63] video: uvesafb: Fix integer overflow in allocation Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 19/63] jfs: Fix inconsistency between memory allocation and ea_buf->max_size Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 22/63] scsi: libsas: defer ata device eh commands to libata Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 05/63] usbip: fix error handling in stub_probe() Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 10/63] usbip: usbip_host: fix NULL-ptr deref and use-after-free errors Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 46/63] cdrom: Fix info leak/OOB read in cdrom_ioctl_drive_status Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 28/63] ext4: don't allow r/w mounts if metadata blocks overlap the superblock Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 03/63] Revert "vti4: Don't override MTU passed on link creation via IFLA_MTU" Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 34/63] ext4: clear i_data in ext4_inode_info when removing inline data Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 01/63] x86/fpu: Fix the 'nofxsr' boot parameter to also clear X86_FEATURE_FXSR_OPT Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 02/63] x86/fpu: Default eagerfpu if FPU and FXSR are enabled Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 58/63] x86/process: Optimize TIF checks in __switch_to_xtra() Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 31/63] ext4: add corruption check in ext4_xattr_set_entry() Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 39/63] x86/entry/64: Remove %ebx handling from error_entry/exit Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 59/63] x86/process: Correct and optimize TIF_BLOCKSTEP switch Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 50/63] hfsplus: fix NULL dereference in hfsplus_lookup() Ben Hutchings
2018-09-22 0:15 ` [PATCH 3.16 62/63] KVM: x86: introduce num_emulated_msrs Ben Hutchings
2018-09-22 12:28 ` [PATCH 3.16 00/63] 3.16.58-rc1 review Guenter Roeck
2018-09-22 21:03 ` Ben Hutchings
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