RAX: ffffffffffffffda RBX: 0000000000000010 RCX: 0000000000413161
RDX: 00007fdb3b8d3b0a RSI: 0000000000000002 RDI: 00007fdb3b8d3b00
RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000000a
R10: 0000000000000075 R11: 0000000000000293 R12: 0000000000000004
R13: 00000000004c823b R14: 00000000004dea78 R15: 0000000000000003
WARNING: CPU: 1 PID: 28416 at block/blk-mq-sched.c:558 blk_mq_sched_free_requests+0x207/0x290 block/blk-mq-sched.c:558
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 28416 Comm: syz-executor.0 Not tainted 5.2.0-rc4-next-20190611 #12
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 panic+0x2cb/0x744 kernel/panic.c:219
 __warn.cold+0x20/0x4d kernel/panic.c:576
 report_bug+0x263/0x2b0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:179 [inline]
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:291
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:986
RIP: 0010:blk_mq_sched_free_requests+0x207/0x290 block/blk-mq-sched.c:558
Code: ff e8 bd 0c 30 fe 31 ff 89 c3 89 c6 e8 e2 fd 49 fe 85 db 0f 85 68 fe ff ff e8 55 fc 49 fe 0f 0b e9 5c fe ff ff e8 49 fc 49 fe <0f> 0b e9 7f fe ff ff 48 c7 c7 34 57 a1 89 e8 d6 fa 82 fe e9 28 fe
RSP: 0018:ffff8880887e73d8 EFLAGS: 00010246
RAX: 0000000000040000 RBX: 0000000000000001 RCX: ffffc90006e59000
RDX: 0000000000040000 RSI: ffffffff83270367 RDI: ffff8880a1d12e60
RBP: ffff8880887e7428 R08: ffff888095392580 R09: 0000000000000000
R10: 0000000000000000 R11: ffff888095392e58 R12: 00000000fffffff4
R13: ffff8880a1d12e48 R14: ffff88808edf7858 R15: ffff8880a1d12e48
 blk_mq_init_sched+0x32c/0x770 block/blk-mq-sched.c:542
 elevator_init_mq+0xcd/0x160 block/elevator.c:622
 blk_mq_init_allocated_queue+0x10e2/0x15b0 block/blk-mq.c:2921
 blk_mq_init_queue+0x62/0xb0 block/blk-mq.c:2705
 loop_add+0x2dd/0x8d0 drivers/block/loop.c:2004
 loop_probe+0x161/0x1a0 drivers/block/loop.c:2128
 kobj_lookup+0x260/0x460 drivers/base/map.c:124
 get_gendisk+0x4d/0x390 block/genhd.c:869
 bdev_get_gendisk fs/block_dev.c:1112 [inline]
 __blkdev_get+0x457/0x1660 fs/block_dev.c:1505
 blkdev_get+0xc4/0x990 fs/block_dev.c:1664
 blkdev_open+0x205/0x290 fs/block_dev.c:1822
 do_dentry_open+0x4df/0x1250 fs/open.c:778
 vfs_open+0xa0/0xd0 fs/open.c:887
 do_last fs/namei.c:3416 [inline]
 path_openat+0x10e9/0x46d0 fs/namei.c:3533
 do_filp_open+0x1a1/0x280 fs/namei.c:3563
 do_sys_open+0x3fe/0x5d0 fs/open.c:1070
 __do_sys_open fs/open.c:1088 [inline]
 __se_sys_open fs/open.c:1083 [inline]
 __x64_sys_open+0x7e/0xc0 fs/open.c:1083
 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x413161
Code: 75 14 b8 02 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 04 19 00 00 c3 48 83 ec 08 e8 0a fa ff ff 48 89 04 24 b8 02 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fa ff ff 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007fdb3b8d3a80 EFLAGS: 00000293 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 0000000000000010 RCX: 0000000000413161
RDX: 00007fdb3b8d3b0a RSI: 0000000000000002 RDI: 00007fdb3b8d3b00
RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000000a
R10: 0000000000000075 R11: 0000000000000293 R12: 0000000000000004
R13: 00000000004c823b R14: 00000000004dea78 R15: 0000000000000003
Kernel Offset: disabled
Rebooting in 86400 seconds..