RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000000a R13: 0000000000000409 R14: 00000000004c6c64 R15: 00007f73d87da6d4 IPVS: Error connecting to the multicast addr BUG: unable to handle kernel NULL pointer dereference at 0000000000000118 PGD 49789067 P4D 49789067 PUD 3886b067 PMD 0 Oops: 0002 [#1] PREEMPT SMP KASAN CPU: 0 PID: 2777 Comm: syz-executor.3 Not tainted 4.19.124-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:set_bit arch/x86/include/asm/bitops.h:76 [inline] RIP: 0010:cpumask_set_cpu include/linux/cpumask.h:311 [inline] RIP: 0010:blk_mq_map_swqueue+0x295/0xa30 block/blk-mq.c:2344 Code: 03 80 3c 28 00 0f 85 dc 06 00 00 44 89 e6 bf 3f 00 00 00 4d 8b 3f e8 7a 76 22 fe 41 83 fc 3f 0f 87 13 05 00 00 e8 fb 74 22 fe 4d 0f ab b7 18 01 00 00 49 8d bf 74 01 00 00 48 89 fa 48 c1 ea PM: Basic memory bitmaps freed RSP: 0018:ffff8880a47df908 EFLAGS: 00010246 RAX: 0000000000040000 RBX: ffff8880a3a3f040 RCX: ffffc9000c0ef000 RDX: 0000000000040000 RSI: ffffffff834513f5 RDI: 0000000000000005 RBP: dffffc0000000000 R08: ffff888035664200 R09: 0000000000000000 R10: ffffed100254fff0 R11: ffff888012a7ff83 R12: 0000000000000001 R13: ffffe8ffffd36b40 R14: 0000000000000001 R15: 0000000000000000 FS: 00007f73d87da700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000118 CR3: 0000000088ef3000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: blk_mq_queue_reinit block/blk-mq.c:2686 [inline] __blk_mq_update_nr_hw_queues block/blk-mq.c:3007 [inline] blk_mq_update_nr_hw_queues+0x565/0xad0 block/blk-mq.c:3021 nbd_start_device+0x1f4/0xd90 drivers/block/nbd.c:1200 nbd_start_device_ioctl drivers/block/nbd.c:1251 [inline] __nbd_ioctl drivers/block/nbd.c:1333 [inline] nbd_ioctl+0x3d7/0xb80 drivers/block/nbd.c:1373 __blkdev_driver_ioctl block/ioctl.c:303 [inline] blkdev_ioctl+0xbf7/0x1a0a block/ioctl.c:601 block_ioctl+0xe9/0x130 fs/block_dev.c:1894 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xcda/0x12e0 fs/ioctl.c:688 PM: Marking nosave pages: [mem 0x00000000-0x00000fff] ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45ca29 Code: 0d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f73d87d9c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00000000004e9080 RCX: 000000000045ca29 RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000005 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000000a R13: 0000000000000409 R14: 00000000004c6c64 R15: 00007f73d87da6d4 Modules linked in: PM: Marking nosave pages: [mem 0x0009f000-0x000fffff] CR2: 0000000000000118 ---[ end trace 6b3da233838d60d0 ]--- PM: Marking nosave pages: [mem 0xbfffd000-0xffffffff] RIP: 0010:set_bit arch/x86/include/asm/bitops.h:76 [inline] RIP: 0010:cpumask_set_cpu include/linux/cpumask.h:311 [inline] RIP: 0010:blk_mq_map_swqueue+0x295/0xa30 block/blk-mq.c:2344 Code: 03 80 3c 28 00 0f 85 dc 06 00 00 44 89 e6 bf 3f 00 00 00 4d 8b 3f e8 7a 76 22 fe 41 83 fc 3f 0f 87 13 05 00 00 e8 fb 74 22 fe 4d 0f ab b7 18 01 00 00 49 8d bf 74 01 00 00 48 89 fa 48 c1 ea RSP: 0018:ffff8880a47df908 EFLAGS: 00010246 RAX: 0000000000040000 RBX: ffff8880a3a3f040 RCX: ffffc9000c0ef000 RDX: 0000000000040000 RSI: ffffffff834513f5 RDI: 0000000000000005 RBP: dffffc0000000000 R08: ffff888035664200 R09: 0000000000000000 netlink: 'syz-executor.2': attribute type 3 has an invalid length. R10: ffffed100254fff0 R11: ffff888012a7ff83 R12: 0000000000000001 R13: ffffe8ffffd36b40 R14: 0000000000000001 R15: 0000000000000000 FS: 00007f73d87da700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b31622000 CR3: 0000000088ef3000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400