sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in; program syz-executor.3 not setting count and/or reply_len properly device lo left promiscuous mode ------------[ cut here ]------------ WARNING: CPU: 1 PID: 10863 at lib/iov_iter.c:629 _copy_from_iter+0x2b2/0x1140 Modules linked in: CPU: 1 PID: 10863 Comm: syz-executor.3 Not tainted 6.2.0-rc5-next-20230125 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:_copy_from_iter+0x2b2/0x1140 Code: 5d 41 5e 41 5f e9 c2 09 33 02 e8 29 76 35 ff be 79 02 00 00 48 c7 c7 40 e4 9e 84 e8 f8 5c 59 ff e9 51 fe ff ff e8 0e 76 35 ff <0f> 0b 45 31 f6 eb 87 e8 02 76 35 ff 31 ff 89 ee e8 b9 71 35 ff 40 RSP: 0018:ffff888040437608 EFLAGS: 00010216 RAX: 000000000000c01c RBX: 0000000000000000 RCX: ffffc900037ef000 RDX: 0000000000040000 RSI: ffffffff82165ae2 RDI: 0000000000000001 RBP: 0000000000001000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff888040437838 R14: 0000000000001000 R15: ffff888040437838 FS: 00007feb1cc77700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020001880 CR3: 0000000009672000 CR4: 0000000000350ee0 Call Trace: copy_page_from_iter+0x251/0x430 blk_rq_map_user_iov+0xb41/0x16c0 blk_rq_map_user_io+0x1d1/0x200 sg_common_write.constprop.0+0xd8d/0x15f0 sg_write.part.0+0x698/0xac0 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. sg_write+0x8d/0xe0 vfs_write+0x2cf/0xdd0 ksys_write+0x12b/0x260 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7feb1f701b19 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:00007feb1cc77188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007feb1f814f60 RCX: 00007feb1f701b19 RDX: 0000000000000125 RSI: 00000000200003c0 RDI: 0000000000000005 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. RBP: 00007feb1f75bf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffb8d78bcf R14: 00007feb1cc77300 R15: 0000000000022000 irq event stamp: 12603 hardirqs last enabled at (12665): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (12726): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (3844): [] irq_exit_rcu+0x11f/0x190 softirqs last disabled at (2421): [] irq_exit_rcu+0x11f/0x190 ---[ end trace 0000000000000000 ]--- device lo entered promiscuous mode device lo left promiscuous mode device lo entered promiscuous mode audit: type=1400 audit(1674814604.538:13): avc: denied { read } for pid=10861 comm="syz-executor.3" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in; program syz-executor.3 not setting count and/or reply_len properly sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in; program syz-executor.3 not setting count and/or reply_len properly