------------[ cut here ]------------ WARNING: CPU: 1 PID: 4742 at mm/gup.c:2121 is_valid_gup_args+0x1dc/0x230 Modules linked in: CPU: 1 PID: 4742 Comm: syz-executor.2 Not tainted 6.2.0-rc7-next-20230207 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:is_valid_gup_args+0x1dc/0x230 Code: dd ff 48 83 3c 24 00 0f 85 76 ff ff ff e8 5c 50 dd ff 0f 0b 45 31 e4 eb c9 e8 50 50 dd ff 0f 0b 45 31 e4 eb bd e8 44 50 dd ff <0f> 0b 45 31 e4 eb b1 e8 38 50 dd ff 0f 0b 45 31 e4 eb a5 e8 2c 50 RSP: 0018:ffff88803642f660 EFLAGS: 00010212 RAX: 0000000000002481 RBX: 0000000000040000 RCX: ffffc900021ec000 RDX: 0000000000040000 RSI: ffffffff816e127c RDI: 0000000000000005 RBP: ffff88803642f6c0 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000040000 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000040000 R15: 0000000000040000 FS: 00007fdc80483700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2c023000 CR3: 000000000ef4c000 CR4: 0000000000350ee0 Call Trace: pin_user_pages_fast+0x83/0x100 iov_iter_extract_pages+0x2b9/0x1e90 bio_iov_iter_get_pages+0x341/0x13c0 __blkdev_direct_IO+0x71a/0xf20 blkdev_direct_IO+0x152/0x180 generic_file_direct_write+0x242/0x560 __generic_file_write_iter+0x1a7/0x4b0 blkdev_write_iter+0x3fa/0x800 vfs_write+0x9b4/0xdc0 ksys_write+0x12b/0x260 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7fdc82f0db19 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:00007fdc80483188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fdc83020f60 RCX: 00007fdc82f0db19 RDX: 00000000effdffff RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007fdc82f67f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffddab2b63f R14: 00007fdc80483300 R15: 0000000000022000 irq event stamp: 1505 hardirqs last enabled at (1515): [] __up_console_sem+0x78/0x80 hardirqs last disabled at (1524): [] __up_console_sem+0x5d/0x80 softirqs last enabled at (856): [] __irq_exit_rcu+0xcc/0x110 softirqs last disabled at (771): [] __irq_exit_rcu+0xcc/0x110 ---[ end trace 0000000000000000 ]--- SELinux: security_context_str_to_sid (staff_u) failed with errno=-22 SELinux: security_context_str_to_sid (staff_u) failed with errno=-22 FAT-fs (loop2): bogus number of reserved sectors FAT-fs (loop2): Can't find a valid FAT filesystem syz-executor.3 uses obsolete (PF_INET,SOCK_PACKET) FAT-fs (loop2): bogus number of reserved sectors FAT-fs (loop2): Can't find a valid FAT filesystem loop5: detected capacity change from 0 to 40 FAT-fs (loop6): Unrecognized mount option "fsuuid=" or missing value audit: type=1400 audit(1675832174.504:11): avc: denied { block_suspend } for pid=4823 comm="syz-executor.1" capability=36 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 FAT-fs (loop6): Unrecognized mount option "fsuuid=" or missing value loop5: detected capacity change from 0 to 40 loop5: detected capacity change from 0 to 40 loop5: detected capacity change from 0 to 40