syzbot


WARNING in scsi_alloc_sgtables

Status: upstream: reported C repro on 2021/07/18 13:05
Reported-by: syzbot+d44b35ecfb807e5af0b5@syzkaller.appspotmail.com
Fix commit: d9a434fa0c12 scsi: core: Fix warning in scsi_alloc_sgtables()
Patched on: [ci-qemu-upstream ci-qemu-upstream-386 ci-qemu2-arm32 ci-qemu2-arm64 ci-qemu2-arm64-compat ci-qemu2-arm64-mte ci-upstream-bpf-kasan-gce ci-upstream-bpf-next-kasan-gce ci-upstream-gce-arm64 ci-upstream-gce-leak ci-upstream-kasan-gce ci-upstream-kasan-gce-386 ci-upstream-kasan-gce-root ci-upstream-kasan-gce-selinux-root ci-upstream-kasan-gce-smack-root ci-upstream-kmsan-gce ci-upstream-kmsan-gce-386 ci-upstream-linux-next-kasan-gce-root ci-upstream-net-kasan-gce ci-upstream-net-this-kasan-gce ci2-upstream-fs ci2-upstream-kcsan-gce ci2-upstream-usb], missing on: [ci-qemu2-riscv64]
First crash: 512d, last: 162d

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 3691 at drivers/scsi/scsi_lib.c:1024 scsi_alloc_sgtables+0xc78/0xf70 drivers/scsi/scsi_lib.c:1024
Modules linked in:
CPU: 1 PID: 3691 Comm: syz-executor194 Not tainted 5.19.0-rc3-syzkaller-00146-g92f20ff72066 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
RIP: 0010:scsi_alloc_sgtables+0xc78/0xf70 drivers/scsi/scsi_lib.c:1024
Code: cb fc 31 ff 44 89 f6 e8 06 a8 cb fc 45 85 f6 0f 84 1a f5 ff ff e8 b8 ab cb fc 83 c5 01 0f b7 ed e9 0f f5 ff ff e8 a8 ab cb fc <0f> 0b 41 bc 0a 00 00 00 e9 2b fb ff ff 41 bc 09 00 00 00 e9 20 fb
RSP: 0018:ffffc90002d7f558 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff88801e693a20 RCX: 0000000000000000
RDX: ffff88801cd4c180 RSI: ffffffff84adfab8 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801537a000
R13: ffff88801e693900 R14: 0000000000000000 R15: ffff88801512e000
FS:  00007ff5dcd6e700(0000) GS:ffff88802c900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020003384 CR3: 0000000024a9a000 CR4: 0000000000150ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 scsi_setup_scsi_cmnd drivers/scsi/scsi_lib.c:1179 [inline]
 scsi_prepare_cmd drivers/scsi/scsi_lib.c:1594 [inline]
 scsi_queue_rq+0x2a6f/0x3800 drivers/scsi/scsi_lib.c:1726
 blk_mq_dispatch_rq_list+0x6ea/0x2350 block/blk-mq.c:1896
 __blk_mq_sched_dispatch_requests+0x206/0x3e0 block/blk-mq-sched.c:306
 blk_mq_sched_dispatch_requests+0x101/0x180 block/blk-mq-sched.c:339
 __blk_mq_run_hw_queue+0xff/0x350 block/blk-mq.c:2013
 __blk_mq_delay_run_hw_queue+0x5bc/0x6d0 block/blk-mq.c:2090
 blk_mq_run_hw_queue+0x321/0x4a0 block/blk-mq.c:2141
 blk_mq_sched_insert_request+0x340/0x440 block/blk-mq-sched.c:458
 blk_execute_rq+0x16d/0x4b0 block/blk-mq.c:1271
 sg_io+0x65a/0xf90 drivers/scsi/scsi_ioctl.c:479
 scsi_ioctl_sg_io drivers/scsi/scsi_ioctl.c:857 [inline]
 scsi_ioctl+0xa66/0x1520 drivers/scsi/scsi_ioctl.c:912
 sd_ioctl+0x195/0x2a0 drivers/scsi/sd.c:1464
 blkdev_ioctl+0x36e/0x800 block/ioctl.c:614
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl fs/ioctl.c:856 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7ff5dcdbc609
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 81 14 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:00007ff5dcd6e2f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007ff5dce464c0 RCX: 00007ff5dcdbc609
RDX: 0000000020002300 RSI: 0000000000002285 RDI: 0000000000000004
RBP: 00007ff5dce1403c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003
R13: 00007ff5dce1405c R14: 2f30656c69662f2e R15: 00007ff5dce464c8
 </TASK>

Crashes (93):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-qemu-upstream 2022/06/24 05:49 upstream 92f20ff72066 912f5df7 .config log report syz C WARNING in scsi_alloc_sgtables
ci-qemu-upstream 2022/02/13 06:00 upstream b81b1829e7e3 8b9ca619 .config log report syz C WARNING in scsi_alloc_sgtables
ci-qemu-upstream 2022/06/29 04:25 upstream 941e3e791269 496a8536 .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream 2022/06/11 07:16 upstream fe43c0188911 0d5abf15 .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream 2022/06/01 09:21 upstream 700170bf6b4d 3666edfe .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream 2022/05/23 07:24 upstream 4b0986a3613c 7268fa62 .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream 2022/03/04 11:45 upstream 38f80f42147f 45a13a73 .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream 2022/02/13 21:16 upstream 42964a18f81c 8b9ca619 .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream 2022/02/13 05:43 upstream b81b1829e7e3 8b9ca619 .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream 2022/01/17 07:07 upstream 79e06c4c4950 723cfaf0 .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream 2022/01/15 14:07 upstream 112450df61b7 723cfaf0 .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream 2022/01/15 12:39 upstream 112450df61b7 723cfaf0 .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream 2022/01/14 13:17 upstream fb3b0673b7d5 b8d780ab .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream 2022/01/11 14:46 upstream fe8152b38d3a 1884f55a .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream 2021/12/07 03:08 upstream f80ef9e49fdf 0230ba3e .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream 2021/12/04 16:18 upstream 12119cfa1052 a617004c .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream 2021/12/04 08:41 upstream 12119cfa1052 a617004c .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream 2021/12/03 08:01 upstream a51e3ac43ddb 61f86278 .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream 2021/12/02 04:16 upstream 58e1100fdc59 61f86278 .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream 2021/12/01 12:47 upstream 58e1100fdc59 5fa3eacc .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream 2021/12/01 05:43 upstream 58e1100fdc59 80270552 .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream 2021/12/01 03:49 upstream 58e1100fdc59 80270552 .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream 2021/11/30 10:04 upstream d58071a8a76d d0830353 .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream 2021/11/30 07:35 upstream d58071a8a76d d0830353 .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream 2021/11/28 19:20 upstream 3498e7f2bb41 63eeac02 .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream 2021/11/28 18:56 upstream 3498e7f2bb41 63eeac02 .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream 2021/07/16 13:17 upstream dd9c7df94c1b f115ae98 .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream 2021/07/14 12:57 upstream 40226a3d96ef 94e0b707 .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream-386 2022/06/29 08:02 upstream 941e3e791269 496a8536 .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream-386 2022/06/24 01:55 upstream fa1796a835fc 912f5df7 .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream-386 2022/06/14 16:59 upstream b13baccc3850 9ce2c85a .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream-386 2022/05/18 08:45 upstream 210e04ff7681 744a39e2 .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream-386 2022/03/04 11:47 upstream 38f80f42147f 45a13a73 .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream-386 2022/02/20 11:27 upstream 4f12b742eb2b 3cd800e4 .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream-386 2022/01/18 23:54 upstream 99613159ad74 731a2d23 .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream-386 2022/01/16 06:21 upstream a33f5c380c4b 723cfaf0 .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream-386 2022/01/14 23:44 upstream 871bfa02d08d 53e00b45 .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream-386 2022/01/14 00:16 upstream 147cc5838c0f b8d780ab .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream-386 2022/01/10 06:00 upstream df0cc57e057f 2ca0d385 .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream-386 2022/01/05 14:28 upstream c9e6606c7fe9 0a2584dd .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream-386 2021/12/07 07:36 upstream f80ef9e49fdf 0230ba3e .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream-386 2021/12/06 15:57 upstream 0fcfb00b28c0 579a8754 .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream-386 2021/12/04 14:23 upstream 12119cfa1052 a617004c .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream-386 2021/12/03 22:04 upstream 5f58da2befa5 c7c20675 .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream-386 2021/12/01 00:42 upstream f080815fdb3e 80270552 .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream-386 2021/11/30 04:35 upstream d58071a8a76d d0830353 .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream-386 2021/11/29 05:13 upstream d06c942efea4 63eeac02 .config log report info WARNING in scsi_alloc_sgtables
ci-qemu-upstream-386 2021/11/28 07:15 upstream 741392771338 63eeac02 .config log report info WARNING in scsi_alloc_sgtables
* Struck through repros no longer work on HEAD.