audit: type=1400 audit(1670853783.721:14): avc: denied { read } for pid=4699 comm="syz-executor.2" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 4703 at lib/iov_iter.c:629 _copy_from_iter+0x2f1/0x1130 Modules linked in: CPU: 0 PID: 4703 Comm: syz-executor.2 Not tainted 6.1.0-rc8-next-20221208 #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 3a 28 37 ff be 79 02 00 00 48 c7 c7 00 c1 9e 84 e8 a9 a7 5a ff e9 13 fe ff ff e8 1f 28 37 ff <0f> 0b 45 31 f6 e9 77 ff ff ff e8 10 28 37 ff 31 ff 89 ee e8 d7 23 RSP: 0018:ffff888049d2f5e8 EFLAGS: 00010212 RAX: 0000000000004f98 RBX: 0000000000000000 RCX: ffffc900021f4000 RDX: 0000000000040000 RSI: ffffffff82122901 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000001000 R13: ffffea000123a800 R14: 0000000000001000 R15: ffff888049d2f818 FS: 00007faf7f6e9700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9a6f76efd0 CR3: 0000000009ae2000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 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: 0033:0x7faf82173b19 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:00007faf7f6e9188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007faf82286f60 RCX: 00007faf82173b19 RDX: 0000000000000125 RSI: 00000000200003c0 RDI: 0000000000000005 RBP: 00007faf821cdf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff6e7a4f8f R14: 00007faf7f6e9300 R15: 0000000000022000 irq event stamp: 5145 hardirqs last enabled at (5217): [] __up_console_sem+0x78/0x80 hardirqs last disabled at (5276): [] __up_console_sem+0x5d/0x80 softirqs last enabled at (710): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (635): [] __irq_exit_rcu+0x11b/0x180 ---[ end trace 0000000000000000 ]--- Process accounting resumed 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 loop3: detected capacity change from 0 to 40