On Tue, Oct 31, 2017 at 1:06 PM, syzbot <bot+1ff6f9fcc3c35f1c72a95e26528c8e7e3276e4da@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote: > Hello, > > syzkaller hit the following crash on > 1f183459b5144384e2669a3f757d36bacab108cf > git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/master > compiler: gcc (GCC) 7.1.1 20170620 > .config is attached > Raw console output is attached. > C reproducer is attached > syzkaller reproducer is attached. See https://goo.gl/kgGztJ > for information about syzkaller reproducers This also happened on more recent commits, including linux-next 36ef71cae353f88fd6e095e2aaa3e5953af1685d (few days ago): BUG: unable to handle kernel paging request at ffffed01078d4fff IP: ata_bmdma_fill_sg drivers/ata/libata-sff.c:2650 [inline] IP: ata_bmdma_qc_prep+0x30a/0x3d0 drivers/ata/libata-sff.c:2727 PGD 7fff6067 P4D 7fff6067 PUD 0 Oops: 0000 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 3 PID: 14842 Comm: syz-executor0 Not tainted 4.14.0-rc5-next-20171018+ #8 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 task: ffff8800618ce4c0 task.stack: ffff880061760000 RIP: 0010:ata_bmdma_fill_sg drivers/ata/libata-sff.c:2650 [inline] RIP: 0010:ata_bmdma_qc_prep+0x30a/0x3d0 drivers/ata/libata-sff.c:2727 RSP: 0018:ffff880061766e10 EFLAGS: 00010807 RAX: dffffc0000000000 RBX: ffff88083c6a7ff8 RCX: ffffffff8378cee1 RDX: 1ffff101078d4fff RSI: ffffc90004024000 RDI: ffff88083c6a7ffc RBP: ffff880061766e70 R08: ffff88003c6b02a4 R09: ffff88003c6b02a8 R10: 0000000000000003 R11: ffffed00078d6051 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000 FS: 00007f298a7bb700(0000) GS:ffff88006df00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed01078d4fff CR3: 0000000062c5e000 CR4: 00000000000006e0 DR0: 0000000020000000 DR1: 0000000020001000 DR2: 0000000020001000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: ata_qc_issue+0x61e/0xe40 drivers/ata/libata-core.c:5411 ata_scsi_translate+0x34a/0x5e0 drivers/ata/libata-scsi.c:2024 __ata_scsi_queuecmd drivers/ata/libata-scsi.c:4326 [inline] ata_scsi_queuecmd+0x2ae/0x6b0 drivers/ata/libata-scsi.c:4375 scsi_dispatch_cmd+0x432/0xb60 drivers/scsi/scsi_lib.c:1713 scsi_request_fn+0xdf0/0x1e50 drivers/scsi/scsi_lib.c:1851 __blk_run_queue_uncond block/blk-core.c:376 [inline] __blk_run_queue+0x1a6/0x370 block/blk-core.c:396 blk_execute_rq_nowait+0x200/0x310 block/blk-exec.c:78 sg_common_write.isra.17+0xbf8/0x1cb0 drivers/scsi/sg.c:806 sg_new_write.isra.20+0x5c0/0x830 drivers/scsi/sg.c:746 sg_ioctl+0x1be4/0x2d90 drivers/scsi/sg.c:890 vfs_ioctl fs/ioctl.c:45 [inline] do_vfs_ioctl+0x1b1/0x1520 fs/ioctl.c:685 SYSC_ioctl fs/ioctl.c:700 [inline] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:691 entry_SYSCALL_64_fastpath+0x1f/0xbe RIP: 0033:0x447c89 RSP: 002b:00007f298a7babd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f298a7bb6cc RCX: 0000000000447c89 RDX: 0000000020007000 RSI: 0000000000002285 RDI: 0000000000000017 RBP: 0000000000000082 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000027f0 R14: 00000000006e6890 R15: 00007f298a7bb700 Code: 41 8d 5e ff e8 c8 ef f5 fd 48 c1 e3 03 e8 bf ef f5 fd 48 03 5d c8 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 04 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 0c RIP: ata_bmdma_fill_sg drivers/ata/libata-sff.c:2650 [inline] RSP: ffff880061766e10 RIP: ata_bmdma_qc_prep+0x30a/0x3d0 drivers/ata/libata-sff.c:2727 RSP: ffff880061766e10 CR2: ffffed01078d4fff ---[ end trace b511aa859839054c ]--- > IP: ata_bmdma_fill_sg drivers/ata/libata-sff.c:2650 [inline] > IP: ata_bmdma_qc_prep+0x30a/0x3d0 drivers/ata/libata-sff.c:2727 > PGD 7fff6067 P4D 7fff6067 PUD 0 > Oops: 0000 [#1] SMP KASAN > Dumping ftrace buffer: > (ftrace buffer empty) > Modules linked in: > CPU: 0 PID: 2984 Comm: syzkaller781870 Not tainted 4.13.0-next-20170915+ #5 > Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 > task: ffff88006afb03c0 task.stack: ffff88006caa0000 > RIP: 0010:ata_bmdma_fill_sg drivers/ata/libata-sff.c:2650 [inline] > RIP: 0010:ata_bmdma_qc_prep+0x30a/0x3d0 drivers/ata/libata-sff.c:2727 > RSP: 0018:ffff88006caa7040 EFLAGS: 00010807 > RAX: dffffc0000000000 RBX: ffff88086b6d7ff8 RCX: ffff88003ae23340 > RDX: 1ffff1010d6dafff RSI: 0000000000000001 RDI: ffff88086b6d7ffc > RBP: ffff88006caa70a0 R08: ffff88006b710234 R09: ffff88006b710238 > R10: 0000000000000003 R11: ffffed000d6e2043 R12: 0000000000000000 > R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000 > FS: 0000000001071880(0000) GS:ffff88003ec00000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: ffffed010d6dafff CR3: 000000003d9a9000 CR4: 00000000000006f0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > Call Trace: > ata_qc_issue+0x625/0xea0 drivers/ata/libata-core.c:5410 > ata_scsi_translate+0x34a/0x5e0 drivers/ata/libata-scsi.c:2023 > __ata_scsi_queuecmd drivers/ata/libata-scsi.c:4325 [inline] > ata_scsi_queuecmd+0x2ae/0x6b0 drivers/ata/libata-scsi.c:4374 > scsi_dispatch_cmd+0x432/0xb60 drivers/scsi/scsi_lib.c:1712 > scsi_request_fn+0xdf0/0x1e50 drivers/scsi/scsi_lib.c:1847 > __blk_run_queue_uncond block/blk-core.c:376 [inline] > __blk_run_queue+0x1a6/0x370 block/blk-core.c:396 > blk_execute_rq_nowait+0x200/0x310 block/blk-exec.c:78 > sg_common_write.isra.17+0xbf8/0x1cb0 drivers/scsi/sg.c:806 > sg_write+0x7a6/0xca0 drivers/scsi/sg.c:677 > __vfs_write+0xef/0x970 fs/read_write.c:479 > vfs_write+0x18f/0x510 fs/read_write.c:543 > SYSC_write fs/read_write.c:588 [inline] > SyS_write+0xef/0x220 fs/read_write.c:580 > entry_SYSCALL_64_fastpath+0x1f/0xbe > RIP: 0033:0x4391a9 > RSP: 002b:00007ffdb9e3ae48 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 > RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004391a9 > RDX: 00000000000000c7 RSI: 0000000020515000 RDI: 0000000000000003 > RBP: 0000000000000082 R08: 0000000000000000 R09: 0000000000000000 > R10: 00000000000000fe R11: 0000000000000293 R12: 0000000000000000 > R13: 0000000000401e00 R14: 0000000000401e90 R15: 0000000000000000 > Code: 41 8d 5e ff e8 18 5c 07 fe 48 c1 e3 03 e8 0f 5c 07 fe 48 03 5d c8 48 > b8 00 00 00 00 00 fc ff df 48 8d 7b 04 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 > 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 0c > RIP: ata_bmdma_fill_sg drivers/ata/libata-sff.c:2650 [inline] RSP: > ffff88006caa7040 > RIP: ata_bmdma_qc_prep+0x30a/0x3d0 drivers/ata/libata-sff.c:2727 RSP: > ffff88006caa7040 > CR2: ffffed010d6dafff > ---[ end trace f22b269ecd4dbac4 ]--- > > > --- > This bug is generated by a dumb bot. It may contain errors. > See https://goo.gl/tpsmEJ for details. > Direct all questions to syzkaller@xxxxxxxxxxxxxxxx. > Please credit me with: Reported-by: syzbot > > syzbot will keep track of this bug report. > Once a fix for this bug is committed, please reply to this email with: > #syz fix: exact-commit-title > To mark this as a duplicate of another syzbot report, please reply with: > #syz dup: exact-subject-of-another-report > If it's a one-off invalid bug report, please reply with: > #syz invalid > Note: if the crash happens again, it will cause creation of a new bug > report. > Note: all commands must start from beginning of the line. > > -- > 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@xxxxxxxxxxxxxxxx. > To view this discussion on the web visit > https://groups.google.com/d/msgid/syzkaller-bugs/001a114aa95cfa4339055cd4e8e0%40google.com. > For more options, visit https://groups.google.com/d/optout. -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
