Buffer I/O error on dev loop4, logical block 419, lost async page write attempt to access beyond end of device loop4: rw=2049, want=421, limit=324 ------------[ cut here ]------------ Buffer I/O error on dev loop4, logical block 420, lost async page write WARNING: CPU: 1 PID: 4033 at mm/page_alloc.c:4937 trace_mm_page_alloc include/trace/events/kmem.h:193 [inline] WARNING: CPU: 1 PID: 4033 at mm/page_alloc.c:4937 __alloc_pages_nodemask+0x595/0x680 mm/page_alloc.c:4981 Modules linked in: CPU: 1 PID: 4033 Comm: syz-executor.4 Not tainted 5.10.123 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 attempt to access beyond end of device loop4: rw=2049, want=422, limit=324 RIP: 0010:__alloc_pages_nodemask+0x595/0x680 mm/page_alloc.c:4937 Code: 0f 85 4c ff ff ff 48 c7 c2 00 55 2d 84 be c1 00 00 00 48 c7 c7 60 55 2d 84 c6 05 1d 53 df 03 01 e8 85 f1 6a 02 e9 28 ff ff ff <0f> 0b e9 cb fd ff ff 4c 89 44 24 18 4c 89 44 24 10 89 74 24 0c 4c RSP: 0018:ffff888043c87998 EFLAGS: 00010246 Buffer I/O error on dev loop4, logical block 421, lost async page write RAX: 0000000000000000 RBX: 1ffff11008790f37 RCX: 0000000000000000 attempt to access beyond end of device loop4: rw=2049, want=423, limit=324 RDX: 0000000000000000 RSI: dffffc0000000000 RDI: 0000000000040cc0 Buffer I/O error on dev loop4, logical block 422, lost async page write RBP: 0000000000000000 R08: 000000007ffff000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000013 attempt to access beyond end of device loop4: rw=2049, want=424, limit=324 R13: 0000000000000013 R14: 0000000000000000 R15: 00000000ffffffa1 FS: 00007f91f4dc0700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Buffer I/O error on dev loop4, logical block 423, lost async page write CR2: 00007fa17ea3ecc0 CR3: 0000000017606000 CR4: 0000000000350ee0 attempt to access beyond end of device loop4: rw=2049, want=425, limit=324 Call Trace: Buffer I/O error on dev loop4, logical block 424, lost async page write attempt to access beyond end of device loop4: rw=2049, want=426, limit=324 Buffer I/O error on dev loop4, logical block 425, lost async page write attempt to access beyond end of device loop4: rw=2049, want=548, limit=324 alloc_pages_current+0x187/0x280 mm/mempolicy.c:2265 alloc_pages include/linux/gfp.h:547 [inline] kmalloc_order+0x35/0x160 mm/slab_common.c:835 kmalloc_order_trace+0x14/0xf0 mm/slab_common.c:851 kmalloc include/linux/slab.h:557 [inline] sco_sock_sendmsg+0x170/0x640 net/bluetooth/sco.c:742 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0x150/0x190 net/socket.c:671 sock_write_iter+0x291/0x3d0 net/socket.c:998 call_write_iter include/linux/fs.h:1903 [inline] new_sync_write+0x42c/0x660 fs/read_write.c:518 vfs_write+0x743/0xa20 fs/read_write.c:605 ksys_write+0x1ee/0x250 fs/read_write.c:658 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f91f786bb19 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:00007f91f4dc0188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f91f797f020 RCX: 00007f91f786bb19 RDX: 00000000fffffe8f RSI: 0000000020000340 RDI: 0000000000000003 RBP: 00007f91f78c5f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd0650766f R14: 00007f91f4dc0300 R15: 0000000000022000 irq event stamp: 1239 hardirqs last enabled at (1249): [] console_unlock+0x929/0xb30 kernel/printk/printk.c:2561 hardirqs last disabled at (1258): [] console_unlock+0x835/0xb30 kernel/printk/printk.c:2476 softirqs last enabled at (1236): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (1169): [] asm_call_irq_on_stack+0x12/0x20 ---[ end trace 5ffddfaf0a63c4d4 ]--- attempt to access beyond end of device loop4: rw=2049, want=419, limit=324 Buffer I/O error on dev loop4, logical block 418, lost async page write attempt to access beyond end of device loop4: rw=2049, want=420, limit=324 Buffer I/O error on dev loop4, logical block 419, lost async page write FAT-fs (loop4): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) audit: type=1326 audit(1656218593.714:12): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4012 comm="syz-executor.7" exe="/syz-executor.7" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f467d8b7b19 code=0x0