R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 0000000000000000 R14: 00007f12ff735f80 R15: 00007ffdbfbaf7e8 ------------[ cut here ]------------ kernel BUG at lib/iov_iter.c:626! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5837 Comm: syz.0.17 Not tainted 6.12.0-rc6-syzkaller-00279-gde2f378f2b77 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:iov_iter_revert+0x420/0x590 lib/iov_iter.c:626 Code: 42 80 3c 20 00 48 8b 1c 24 74 08 48 89 df e8 77 c5 42 fd 4c 89 2b e9 04 01 00 00 45 85 ed 48 8b 3c 24 75 16 e8 71 fe d8 fc 90 <0f> 0b 41 83 fd 05 48 8b 3c 24 0f 84 58 01 00 00 48 89 f8 48 c1 e8 RSP: 0018:ffffc900025cf740 EFLAGS: 00010293 RAX: ffffffff84bbdbef RBX: 000000000001e098 RCX: ffff8880007a2440 RDX: 0000000000000000 RSI: ffffffff8f098840 RDI: ffff88804de7b570 RBP: 0000000000000000 R08: 0000000000000001 R09: ffffffff84bbd8d4 R10: 0000000000000004 R11: ffff8880007a2440 R12: dffffc0000000000 R13: 0000000000000000 R14: ffff88804de7b560 R15: fffffffffffe1f68 FS: 00007f130029d6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002000c380 CR3: 0000000040e3a000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: netfs_reset_iter+0xce/0x130 fs/netfs/misc.c:133 netfs_clear_unread fs/netfs/read_collect.c:22 [inline] netfs_read_subreq_terminated+0x1fe/0xad0 fs/netfs/read_collect.c:491 netfs_read_to_pagecache+0x628/0x900 fs/netfs/buffered_read.c:306 netfs_readahead+0x7e9/0x9d0 fs/netfs/buffered_read.c:421 read_pages+0x17e/0x840 mm/readahead.c:160 page_cache_ra_unbounded+0x774/0x8a0 mm/readahead.c:290 do_page_cache_ra mm/readahead.c:320 [inline] force_page_cache_ra+0x280/0x2f0 mm/readahead.c:349 force_page_cache_readahead mm/internal.h:357 [inline] generic_fadvise+0x522/0x830 mm/fadvise.c:106 ksys_readahead mm/readahead.c:695 [inline] __do_sys_readahead mm/readahead.c:703 [inline] __se_sys_readahead mm/readahead.c:701 [inline] __x64_sys_readahead+0x1ac/0x230 mm/readahead.c:701 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f12ff57e719 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f130029d038 EFLAGS: 00000246 ORIG_RAX: 00000000000000bb RAX: ffffffffffffffda RBX: 00007f12ff735f80 RCX: 00007f12ff57e719 RDX: 000800000000000d RSI: 0000000000000005 RDI: 0000000000000006 RBP: 00007f130029d090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 0000000000000000 R14: 00007f12ff735f80 R15: 00007ffdbfbaf7e8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:iov_iter_revert+0x420/0x590 lib/iov_iter.c:626 Code: 42 80 3c 20 00 48 8b 1c 24 74 08 48 89 df e8 77 c5 42 fd 4c 89 2b e9 04 01 00 00 45 85 ed 48 8b 3c 24 75 16 e8 71 fe d8 fc 90 <0f> 0b 41 83 fd 05 48 8b 3c 24 0f 84 58 01 00 00 48 89 f8 48 c1 e8 RSP: 0018:ffffc900025cf740 EFLAGS: 00010293 RAX: ffffffff84bbdbef RBX: 000000000001e098 RCX: ffff8880007a2440 RDX: 0000000000000000 RSI: ffffffff8f098840 RDI: ffff88804de7b570 RBP: 0000000000000000 R08: 0000000000000001 R09: ffffffff84bbd8d4 R10: 0000000000000004 R11: ffff8880007a2440 R12: dffffc0000000000 R13: 0000000000000000 R14: ffff88804de7b560 R15: fffffffffffe1f68 FS: 00007f130029d6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002000c380 CR3: 0000000040e3a000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400