do_group_exit+0xd3/0x2a0 kernel/exit.c:1031 __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 ------------[ cut here ]------------ kernel BUG at include/linux/mm.h:1460! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 1 UID: 0 PID: 9242 Comm: syz.3.669 Not tainted 6.11.0-syzkaller-02574-ga430d95c5efa #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 82 b1 48 fd 90 0f 0b 49 89 c5 e9 99 f6 ff ff e8 42 30 04 fd 48 c7 c6 00 b7 b0 8b 4c 89 e7 e8 63 b1 48 fd 90 <0f> 0b e8 2b 30 04 fd 4c 8b 64 24 48 49 83 ec 01 e9 94 fd ff ff 4c RSP: 0018:ffffc9000473ec90 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff88803028a440 RSI: ffffffff8487a8ad RDI: ffff88803028a884 RBP: ffffea00015d5634 R08: 0000000000000001 R09: fffffbfff2d39b07 R10: ffffffff969cd83f R11: ffff88806a728a40 R12: ffffea00015d5600 R13: ffff88802bb2c000 R14: 0000000000001000 R15: 0000000000001000 FS: 0000000000000000(0000) GS:ffff88806a700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b317baff8 CR3: 0000000026558000 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+0x164/0xbd0 fs/netfs/write_issue.c:274 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 v9fs_mmap_vm_close+0x20d/0x260 fs/9p/vfs_file.c:502 remove_vma+0x8b/0x180 mm/mmap.c:182 exit_mmap+0x4d4/0xb20 mm/mmap.c:3436 __mmput+0x12a/0x480 kernel/fork.c:1345 mmput+0x62/0x70 kernel/fork.c:1367 exit_mm kernel/exit.c:571 [inline] do_exit+0x9bf/0x2bb0 kernel/exit.c:869 do_group_exit+0xd3/0x2a0 kernel/exit.c:1031 get_signal+0x25fb/0x2770 kernel/signal.c:2917 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:310 exit_to_user_mode_loop kernel/entry/common.c:111 [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+0x150/0x2a0 kernel/entry/common.c:218 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f865ff7def9 Code: Unable to access opcode bytes at 0x7f865ff7decf. RSP: 002b:00007f8660d6c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: 0000000000020000 RBX: 00007f8660135f80 RCX: 00007f865ff7def9 RDX: 00000000fffffecc RSI: 0000000020000000 RDI: 0000000000000005 RBP: 00007f865fff0b76 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f8660135f80 R15: 00007ffccee75ce8 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 82 b1 48 fd 90 0f 0b 49 89 c5 e9 99 f6 ff ff e8 42 30 04 fd 48 c7 c6 00 b7 b0 8b 4c 89 e7 e8 63 b1 48 fd 90 <0f> 0b e8 2b 30 04 fd 4c 8b 64 24 48 49 83 ec 01 e9 94 fd ff ff 4c RSP: 0018:ffffc9000473ec90 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff88803028a440 RSI: ffffffff8487a8ad RDI: ffff88803028a884 RBP: ffffea00015d5634 R08: 0000000000000001 R09: fffffbfff2d39b07 R10: ffffffff969cd83f R11: ffff88806a728a40 R12: ffffea00015d5600 R13: ffff88802bb2c000 R14: 0000000000001000 R15: 0000000000001000 FS: 0000000000000000(0000) GS:ffff88806a700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020021000 CR3: 000000002632c000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400