should_fail_alloc_page mm/page_alloc.c:3088 [inline] prepare_alloc_pages mm/page_alloc.c:4346 [inline] __alloc_pages_nodemask+0x239/0x2890 mm/page_alloc.c:4393 block nbd0: shutting down sockets kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN alloc_pages_vma+0xf2/0x780 mm/mempolicy.c:2161 CPU: 0 PID: 25915 Comm: syz-executor.5 Not tainted 4.19.191-syzkaller #0 alloc_zeroed_user_highpage_movable include/linux/highmem.h:184 [inline] do_anonymous_page+0x7c2/0x1be0 mm/memory.c:3271 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__lock_acquire+0x1eb/0x3ff0 kernel/locking/lockdep.c:3295 Code: 2b 29 00 00 48 81 c4 98 01 00 00 44 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <80> 3c 02 00 0f 85 b3 2a 00 00 49 81 3e 20 b2 66 8c 0f 84 65 ff ff RSP: 0018:ffff88803ad1f270 EFLAGS: 00010006 handle_pte_fault mm/memory.c:4132 [inline] __handle_mm_fault+0x227a/0x41c0 mm/memory.c:4258 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000022 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88803bb743c0 R14: 0000000000000110 R15: 0000000000000001 handle_mm_fault+0x436/0xb10 mm/memory.c:4295 FS: 00007f910d904700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 __do_page_fault+0x68e/0xd60 arch/x86/mm/fault.c:1412 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000564862c6c8e0 CR3: 0000000091868000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1205 RIP: 0010:copy_user_enhanced_fast_string+0xe/0x20 arch/x86/lib/copy_user_64.S:181 Code: 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 1f 00 c3 0f 1f 80 00 00 00 00 0f 1f 00 83 fa 40 0f 82 70 ff ff ff 89 d1 a4 31 c0 0f 1f 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 83 RSP: 0018:ffff88803152fb00 EFLAGS: 00010206 RAX: 0000000000040000 RBX: ffff888041d50000 RCX: 0000000000000024 RDX: 0000000000008000 RSI: ffff888041d57fdc RDI: 0000000020ea4000 RBP: 0000000000000001 R08: 0000000000000000 R09: ffff888041d50000 R10: 0000000000000006 R11: 0000000000000000 R12: 0000000000008000 R13: 0000000000008000 R14: 0000000000020cfa R15: 0000000000000000 copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline] raw_copy_to_user arch/x86/include/asm/uaccess_64.h:128 [inline] __copy_to_user include/linux/uaccess.h:105 [inline] sg_read_oxfer drivers/scsi/sg.c:2001 [inline] sg_read drivers/scsi/sg.c:554 [inline] sg_read+0x112c/0x17c0 drivers/scsi/sg.c:414 lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908 flush_workqueue+0x117/0x13e0 kernel/workqueue.c:2660 do_loop_readv_writev fs/read_write.c:701 [inline] do_loop_readv_writev fs/read_write.c:688 [inline] do_iter_read+0x471/0x630 fs/read_write.c:925 vfs_readv+0xe5/0x150 fs/read_write.c:987 nbd_disconnect_and_put+0x100/0x190 drivers/block/nbd.c:1928 nbd_genl_disconnect+0x34f/0x4f0 drivers/block/nbd.c:1966 genl_family_rcv_msg+0x642/0xc40 net/netlink/genetlink.c:602 do_readv+0x136/0x330 fs/read_write.c:1020 genl_rcv_msg+0xbf/0x160 net/netlink/genetlink.c:627 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2455 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4665d9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f4eac949188 EFLAGS: 00000246 ORIG_RAX: 0000000000000013 genl_rcv+0x24/0x40 net/netlink/genetlink.c:638 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1344 RDX: 0000000000000001 RSI: 000000002085dff0 RDI: 0000000000000003 RBP: 00007f4eac9491d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffcccb185bf R14: 00007f4eac949300 R15: 0000000000022000 netlink_sendmsg+0x6bb/0xc40 net/netlink/af_netlink.c:1909 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:632 ___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2115 __sys_sendmsg net/socket.c:2153 [inline] __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x132/0x220 net/socket.c:2160 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4665d9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f910d904188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9 RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000000000005 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007fffe8307b8f R14: 00007f910d904300 R15: 0000000000022000 Modules linked in: ---[ end trace dd4b79edfca7a886 ]--- RIP: 0010:__lock_acquire+0x1eb/0x3ff0 kernel/locking/lockdep.c:3295 Code: 2b 29 00 00 48 81 c4 98 01 00 00 44 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <80> 3c 02 00 0f 85 b3 2a 00 00 49 81 3e 20 b2 66 8c 0f 84 65 ff ff RSP: 0018:ffff88803ad1f270 EFLAGS: 00010006 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000022 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88803bb743c0 R14: 0000000000000110 R15: 0000000000000001 FS: 00007f910d904700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000564862c6c8e0 CR3: 0000000091868000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400