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Message-ID: <CAHiZj8iv2WBFHDdamhnOg+KTNqWrmNpDxshpEX7h4QdtF0Wb_g@mail.gmail.com> Date: Sat, 16 Nov 2024 15:47:52 +0530 From: Suraj Sonawane <surajsonawane0215@...il.com> To: syzbot <syzbot+7534f060ebda6b8b51b3@...kaller.appspotmail.com> Cc: dan.j.williams@...el.com, dave.jiang@...el.com, ira.weiny@...el.com, lenb@...nel.org, linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org, nvdimm@...ts.linux.dev, rafael@...nel.org, syzkaller-bugs@...glegroups.com, vishal.l.verma@...el.com Subject: Re: [syzbot] [acpi?] [nvdimm?] KASAN: vmalloc-out-of-bounds Read in acpi_nfit_ctl (2) #syz test On Tue, Nov 5, 2024 at 8:58 PM syzbot < syzbot+7534f060ebda6b8b51b3@...kaller.appspotmail.com> wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: 2e1b3cc9d7f7 Merge tag 'arm-fixes-6.12-2' of > git://git.ker.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=12418e30580000 > kernel config: https://syzkaller.appspot.com/x/.config?x=11254d3590b16717 > dashboard link: > https://syzkaller.appspot.com/bug?extid=7534f060ebda6b8b51b3 > compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for > Debian) 2.40 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12170f40580000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16418e30580000 > > Downloadable assets: > disk image (non-bootable): > https://storage.googleapis.com/syzbot-assets/7feb34a89c2a/non_bootable_disk-2e1b3cc9.raw.xz > vmlinux: > https://storage.googleapis.com/syzbot-assets/2f2588b04ae9/vmlinux-2e1b3cc9.xz > kernel image: > https://storage.googleapis.com/syzbot-assets/2c9324cf16df/bzImage-2e1b3cc9.xz > > IMPORTANT: if you fix the issue, please add the following tag to the > commit: > Reported-by: syzbot+7534f060ebda6b8b51b3@...kaller.appspotmail.com > > ================================================================== > BUG: KASAN: vmalloc-out-of-bounds in cmd_to_func > drivers/acpi/nfit/core.c:416 [inline] > BUG: KASAN: vmalloc-out-of-bounds in acpi_nfit_ctl+0x20e8/0x24a0 > drivers/acpi/nfit/core.c:459 > Read of size 4 at addr ffffc90000e0e038 by task syz-executor229/5316 > > CPU: 0 UID: 0 PID: 5316 Comm: syz-executor229 Not tainted > 6.12.0-rc6-syzkaller-00077-g2e1b3cc9d7f7 #0 > Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS > 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 > Call Trace: > <TASK> > __dump_stack lib/dump_stack.c:94 [inline] > dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 > print_address_description mm/kasan/report.c:377 [inline] > print_report+0x169/0x550 mm/kasan/report.c:488 > kasan_report+0x143/0x180 mm/kasan/report.c:601 > cmd_to_func drivers/acpi/nfit/core.c:416 [inline] > acpi_nfit_ctl+0x20e8/0x24a0 drivers/acpi/nfit/core.c:459 > __nd_ioctl drivers/nvdimm/bus.c:1186 [inline] > nd_ioctl+0x1844/0x1fd0 drivers/nvdimm/bus.c:1264 > vfs_ioctl fs/ioctl.c:51 [inline] > __do_sys_ioctl fs/ioctl.c:907 [inline] > __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:893 > do_syscall_x64 arch/x86/entry/common.c:52 [inline] > do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 > entry_SYSCALL_64_after_hwframe+0x77/0x7f > RIP: 0033:0x7fb399ccda79 > Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 > RSP: 002b:00007ffcf6cb8d88 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 > RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb399ccda79 > RDX: 0000000020000180 RSI: 00000000c008640a RDI: 0000000000000003 > RBP: 00007fb399d405f0 R08: 0000000000000006 R09: 0000000000000006 > R10: 0000000000000006 R11: 0000000000000246 R12: 0000000000000001 > R13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001 > </TASK> > > The buggy address belongs to the virtual mapping at > [ffffc90000e0e000, ffffc90000e10000) created by: > __nd_ioctl drivers/nvdimm/bus.c:1169 [inline] > nd_ioctl+0x1594/0x1fd0 drivers/nvdimm/bus.c:1264 > > The buggy address belongs to the physical page: > page: refcount:1 mapcount:0 mapping:0000000000000000 > index:0xffff8880401b9a80 pfn:0x401b9 > flags: 0x4fff00000000000(node=1|zone=1|lastcpupid=0x7ff) > raw: 04fff00000000000 0000000000000000 dead000000000122 0000000000000000 > raw: ffff8880401b9a80 0000000000000000 00000001ffffffff 0000000000000000 > page dumped because: kasan: bad access detected > page_owner tracks the page as allocated > page last allocated via order 0, migratetype Unmovable, gfp_mask > 0x2cc2(GFP_KERNEL|__GFP_HIGHMEM|__GFP_NOWARN), pid 5316, tgid 5316 > (syz-executor229), ts 69039468240, free_ts 68666765389 > set_page_owner include/linux/page_owner.h:32 [inline] > post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1537 > prep_new_page mm/page_alloc.c:1545 [inline] > get_page_from_freelist+0x303f/0x3190 mm/page_alloc.c:3457 > __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4733 > alloc_pages_bulk_noprof+0x729/0xd40 mm/page_alloc.c:4681 > alloc_pages_bulk_array_mempolicy_noprof+0x8ea/0x1600 mm/mempolicy.c:2556 > vm_area_alloc_pages mm/vmalloc.c:3542 [inline] > __vmalloc_area_node mm/vmalloc.c:3646 [inline] > __vmalloc_node_range_noprof+0x752/0x13f0 mm/vmalloc.c:3828 > __vmalloc_node_noprof mm/vmalloc.c:3893 [inline] > vmalloc_noprof+0x79/0x90 mm/vmalloc.c:3926 > __nd_ioctl drivers/nvdimm/bus.c:1169 [inline] > nd_ioctl+0x1594/0x1fd0 drivers/nvdimm/bus.c:1264 > vfs_ioctl fs/ioctl.c:51 [inline] > __do_sys_ioctl fs/ioctl.c:907 [inline] > __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:893 > do_syscall_x64 arch/x86/entry/common.c:52 [inline] > do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 > entry_SYSCALL_64_after_hwframe+0x77/0x7f > page last free pid 5312 tgid 5312 stack trace: > reset_page_owner include/linux/page_owner.h:25 [inline] > free_pages_prepare mm/page_alloc.c:1108 [inline] > free_unref_page+0xcfb/0xf20 mm/page_alloc.c:2638 > __folio_put+0x2c7/0x440 mm/swap.c:126 > pipe_buf_release include/linux/pipe_fs_i.h:219 [inline] > pipe_update_tail fs/pipe.c:224 [inline] > pipe_read+0x6ed/0x13e0 fs/pipe.c:344 > new_sync_read fs/read_write.c:488 [inline] > vfs_read+0x991/0xb70 fs/read_write.c:569 > ksys_read+0x183/0x2b0 fs/read_write.c:712 > do_syscall_x64 arch/x86/entry/common.c:52 [inline] > do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 > entry_SYSCALL_64_after_hwframe+0x77/0x7f > > Memory state around the buggy address: > ffffc90000e0df00: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 > ffffc90000e0df80: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 > >ffffc90000e0e000: 00 00 00 00 00 00 00 03 f8 f8 f8 f8 f8 f8 f8 f8 > ^ > ffffc90000e0e080: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 > ffffc90000e0e100: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 > ================================================================== > > > --- > 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@...glegroups.com. > > syzbot will keep track of this issue. See: > https://goo.gl/tpsmEJ#status for how to communicate with syzbot. > > If the report is already addressed, let syzbot know by replying with: > #syz fix: exact-commit-title > > If you want syzbot to run the reproducer, reply with: > #syz test: git://repo/address.git branch-or-commit-hash > If you attach or paste a git patch, syzbot will apply it before testing. > > If you want to overwrite report's subsystems, reply with: > #syz set subsystems: new-subsystem > (See the list of subsystem names on the web dashboard) > > If the report is a duplicate of another one, reply with: > #syz dup: exact-subject-of-another-report > > If you want to undo deduplication, reply with: > #syz undup > > -- > You received this message because you are subscribed to the Google Groups > "syzkaller-bugs" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to syzkaller-bugs+unsubscribe@...glegroups.com. > To view this discussion visit > https://groups.google.com/d/msgid/syzkaller-bugs/672a3997.050a0220.2a847.11f7.GAE%40google.com > . > Content of type "text/html" skipped View attachment "0001-fix-vmalloc.patch" of type "text/x-patch" (2872 bytes)
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