__do_sys_exit_group kernel/exit.c:1042 [inline] __se_sys_exit_group kernel/exit.c:1040 [inline] __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1040 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f ------------[ cut here ]------------ kernel BUG at include/linux/mm.h:1460! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 13096 Comm: syz.0.2062 Not tainted 6.11.0-syzkaller-03917-ga940d9a43e62 #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:folio_get include/linux/mm.h:1460 [inline] RIP: 0010:get_page include/linux/mm.h:1466 [inline] RIP: 0010:iter_folioq_get_pages lib/iov_iter.c:1030 [inline] RIP: 0010:__iov_iter_get_pages_alloc+0x1d1e/0x2240 lib/iov_iter.c:1201 Code: b0 8b 48 89 df e8 c2 b0 48 fd 90 0f 0b 49 89 c5 e9 99 f6 ff ff e8 82 2f 04 fd 48 c7 c6 00 ba b0 8b 4c 89 e7 e8 a3 b0 48 fd 90 <0f> 0b e8 6b 2f 04 fd 4c 8b 64 24 48 49 83 ec 01 e9 94 fd ff ff 4c RSP: 0018:ffffc90003eaefc8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 000000000000000b RCX: 0000000000000000 RDX: ffff8880442e8000 RSI: ffffffff848814ed RDI: ffff8880442e8444 RBP: ffffea000156f574 R08: 0000000000000001 R09: fffffbfff2d3a914 R10: ffffffff969d48a7 R11: ffffffff815f79b0 R12: ffffea000156f540 R13: ffff8880286fcc00 R14: 0000000000001000 R15: 0000000000001000 FS: 000055556fa0e500(0000) GS:ffff88806a600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c39a5e8 CR3: 00000000461ac000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: iov_iter_get_pages_alloc2+0x53/0xf0 lib/iov_iter.c:1225 p9_get_mapped_pages.part.0.constprop.0+0x4ca/0x7d0 net/9p/trans_virtio.c:333 p9_get_mapped_pages net/9p/trans_virtio.c:318 [inline] p9_virtio_zc_request+0x1be/0x1390 net/9p/trans_virtio.c:439 p9_client_zc_rpc.constprop.0+0x29a/0x880 net/9p/client.c:808 p9_client_write+0x447/0x680 net/9p/client.c:1631 v9fs_issue_write+0xe2/0x180 fs/9p/vfs_addr.c:59 netfs_do_issue_write+0x92/0x110 fs/netfs/write_issue.c:223 netfs_issue_write fs/netfs/write_issue.c:250 [inline] netfs_advance_write fs/netfs/write_issue.c:291 [inline] netfs_advance_write+0x384/0xbd0 fs/netfs/write_issue.c:259 netfs_write_folio+0xc44/0x18f0 fs/netfs/write_issue.c:469 netfs_writepages+0x2ba/0xb90 fs/netfs/write_issue.c:541 do_writepages+0x1a3/0x7f0 mm/page-writeback.c:2683 filemap_fdatawrite_wbc mm/filemap.c:397 [inline] filemap_fdatawrite_wbc+0x148/0x1c0 mm/filemap.c:387 __filemap_fdatawrite_range+0xba/0x100 mm/filemap.c:430 v9fs_dir_release+0x429/0x590 fs/9p/vfs_dir.c:219 __fput+0x3f6/0xb60 fs/file_table.c:431 task_work_run+0x14e/0x250 kernel/task_work.c:228 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x27b/0x2a0 kernel/entry/common.c:218 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fcb4b37def9 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:00007ffd9cda91b8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007fcb4b537a80 RCX: 00007fcb4b37def9 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 00007fcb4b537a80 R08: 0000000000000006 R09: 00007ffd9cda94af R10: 00000000005d40b8 R11: 0000000000000246 R12: 0000000000082d82 R13: 00007ffd9cda92c0 R14: 0000000000000032 R15: ffffffffffffffff Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:folio_get include/linux/mm.h:1460 [inline] RIP: 0010:get_page include/linux/mm.h:1466 [inline] RIP: 0010:iter_folioq_get_pages lib/iov_iter.c:1030 [inline] RIP: 0010:__iov_iter_get_pages_alloc+0x1d1e/0x2240 lib/iov_iter.c:1201 Code: b0 8b 48 89 df e8 c2 b0 48 fd 90 0f 0b 49 89 c5 e9 99 f6 ff ff e8 82 2f 04 fd 48 c7 c6 00 ba b0 8b 4c 89 e7 e8 a3 b0 48 fd 90 <0f> 0b e8 6b 2f 04 fd 4c 8b 64 24 48 49 83 ec 01 e9 94 fd ff ff 4c RSP: 0018:ffffc90003eaefc8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 000000000000000b RCX: 0000000000000000 RDX: ffff8880442e8000 RSI: ffffffff848814ed RDI: ffff8880442e8444 RBP: ffffea000156f574 R08: 0000000000000001 R09: fffffbfff2d3a914 R10: ffffffff969d48a7 R11: ffffffff815f79b0 R12: ffffea000156f540 R13: ffff8880286fcc00 R14: 0000000000001000 R15: 0000000000001000 FS: 000055556fa0e500(0000) GS:ffff88806a800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055670051d8e8 CR3: 00000000461ac000 CR4: 0000000000350ef0 DR0: 0000000000002800 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400