sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in; program syz-executor.2 not setting count and/or reply_len properly ------------[ cut here ]------------ WARNING: CPU: 1 PID: 10152 at lib/iov_iter.c:629 _copy_from_iter+0x2f1/0x1130 Modules linked in: CPU: 1 PID: 10152 Comm: syz-executor.2 Not tainted 6.1.0-rc8-next-20221207 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:_copy_from_iter+0x2f1/0x1130 Code: 37 ff 44 89 f3 e9 2f ff ff ff e8 0a 22 37 ff be 79 02 00 00 48 c7 c7 80 c0 9e 84 e8 79 a1 5a ff e9 13 fe ff ff e8 ef 21 37 ff <0f> 0b 45 31 f6 e9 77 ff ff ff e8 e0 21 37 ff 31 ff 89 ee e8 a7 1d RSP: 0018:ffff8880475075e8 EFLAGS: 00010216 RAX: 000000000000b2a6 RBX: 0000000000000000 RCX: ffffc90008e32000 RDX: 0000000000040000 RSI: ffffffff82122f31 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000001000 R13: ffffea00011ae800 R14: 0000000000001000 R15: ffff888047507818 FS: 00007f811487e700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2c924000 CR3: 0000000046a78000 CR4: 0000000000350ee0 Call Trace: copy_page_from_iter+0xe3/0x180 blk_rq_map_user_iov+0xb0c/0x1650 blk_rq_map_user_io+0x1ee/0x220 sg_common_write.constprop.0+0xd84/0x15e0 sg_write.part.0+0x706/0xb20 sg_write+0x88/0xe0 vfs_write+0x358/0xe40 ksys_write+0x12b/0x260 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f8117308b19 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:00007f811487e188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f811741bf60 RCX: 00007f8117308b19 RDX: 0000000000000125 RSI: 00000000200003c0 RDI: 0000000000000005 RBP: 00007f8117362f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffcadd21af R14: 00007f811487e300 R15: 0000000000022000 irq event stamp: 20189 hardirqs last enabled at (20281): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (20366): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (14032): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (13017): [] __irq_exit_rcu+0x11b/0x180 ---[ end trace 0000000000000000 ]--- audit: type=1400 audit(1670413321.749:11): avc: denied { block_suspend } for pid=10278 comm="syz-executor.3" capability=36 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1