------------[ cut here ]------------ WARNING: CPU: 3 PID: 4432 at drivers/scsi/scsi_lib.c:990 scsi_alloc_sgtables+0xc7c/0xf60 drivers/scsi/scsi_lib.c:990 Modules linked in: CPU: 3 PID: 4432 Comm: syz-executor.2 Not tainted 5.15.0-rc5-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 RIP: 0010:scsi_alloc_sgtables+0xc7c/0xf60 drivers/scsi/scsi_lib.c:990 Code: f0 fc 31 ff 44 89 f6 e8 12 8b f0 fc 45 85 f6 0f 84 15 f5 ff ff e8 c4 83 f0 fc 83 c5 01 0f b7 ed e9 0a f5 ff ff e8 b4 83 f0 fc <0f> 0b 41 be 0a 00 00 00 e9 24 fb ff ff 41 be 09 00 00 00 e9 19 fb RSP: 0018:ffffc90023747420 EFLAGS: 00010216 RAX: 0000000000008849 RBX: ffff88801be00128 RCX: ffffc900239ec000 RDX: 0000000000040000 RSI: ffffffff8486545c RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff84864953 R11: 0000000000000000 R12: ffff88801ae16000 R13: ffff88801be00000 R14: 0000000000000000 R15: ffff88801ae14000 FS: 0000000000000000(0000) GS:ffff88802cd00000(0063) knlGS:00000000f451fb40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000200069c0 CR3: 0000000077a2b000 CR4: 0000000000150ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: scsi_setup_scsi_cmnd drivers/scsi/scsi_lib.c:1167 [inline] scsi_prepare_cmd drivers/scsi/scsi_lib.c:1564 [inline] scsi_queue_rq+0x25b9/0x3470 drivers/scsi/scsi_lib.c:1670 blk_mq_dispatch_rq_list+0x422/0x1f00 block/blk-mq.c:1360 __blk_mq_sched_dispatch_requests+0x20b/0x410 block/blk-mq-sched.c:327 blk_mq_sched_dispatch_requests+0xfb/0x180 block/blk-mq-sched.c:360 __blk_mq_run_hw_queue+0xd8/0x150 block/blk-mq.c:1480 __blk_mq_delay_run_hw_queue+0x547/0x640 block/blk-mq.c:1557 blk_mq_run_hw_queue+0x16c/0x2f0 block/blk-mq.c:1610 blk_mq_sched_insert_request+0x368/0x450 block/blk-mq-sched.c:479 blk_execute_rq+0xdc/0x410 block/blk-exec.c:96 sg_io+0x678/0x10e0 drivers/scsi/scsi_ioctl.c:484 scsi_ioctl_sg_io drivers/scsi/scsi_ioctl.c:872 [inline] scsi_ioctl+0xa77/0x15d0 drivers/scsi/scsi_ioctl.c:928 sd_ioctl+0x1a6/0x2b0 drivers/scsi/sd.c:1576 blkdev_compat_ptr_ioctl+0x9e/0xe0 block/ioctl.c:235 compat_blkdev_ioctl+0x3bd/0x870 block/ioctl.c:657 __do_compat_sys_ioctl+0x1c7/0x290 fs/ioctl.c:972 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf6f25549 Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f451f5fc EFLAGS: 00000296 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000002285 RDX: 0000000020002300 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess): 0: 03 74 c0 01 add 0x1(%rax,%rax,8),%esi 4: 10 05 03 74 b8 01 adc %al,0x1b87403(%rip) # 0x1b8740d a: 10 06 adc %al,(%rsi) c: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 10: 10 07 adc %al,(%rdi) 12: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi 16: 10 08 adc %cl,(%rax) 18: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1c: 00 00 add %al,(%rax) 1e: 00 00 add %al,(%rax) 20: 00 51 52 add %dl,0x52(%rcx) 23: 55 push %rbp 24: 89 e5 mov %esp,%ebp 26: 0f 34 sysenter 28: cd 80 int $0x80 * 2a: 5d pop %rbp <-- trapping instruction 2b: 5a pop %rdx 2c: 59 pop %rcx 2d: c3 retq 2e: 90 nop 2f: 90 nop 30: 90 nop 31: 90 nop 32: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 39: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi