task_work_run+0x150/0x240 kernel/task_work.c:233 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] __exit_to_user_mode_loop kernel/entry/common.c:70 [inline] exit_to_user_mode_loop+0x1d8/0x6f0 kernel/entry/common.c:101 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline] do_syscall_64+0x666/0x870 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f ------------[ cut here ]------------ kernel BUG at mm/filemap.c:858! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 1 UID: 0 PID: 9722 Comm: syz.2.1042 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:__filemap_add_folio+0xfc2/0x12a0 mm/filemap.c:858 Code: 50 c1 ff 48 c7 c6 e0 92 dd 8b 4c 89 ef e8 c6 ea 12 00 90 0f 0b e8 1e 50 c1 ff 48 c7 c6 40 93 dd 8b 4c 89 ef e8 af ea 12 00 90 <0f> 0b e8 07 50 c1 ff 48 c7 c6 c0 93 dd 8b 4c 89 ef e8 98 ea 12 00 RSP: 0018:ffffc900062b73f8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000112cc0 RCX: 0000000000000000 RDX: ffff8880581a2540 RSI: ffffffff825b1b48 RDI: ffff8880581a2a04 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000002 R13: ffffea0000df5500 R14: 000000000002c928 R15: 0000000000000000 FS: 00007f8ed9bb96c0(0000) GS:ffff8880d61e0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe7d87eb540 CR3: 000000002a144000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 00000000fda3b69a DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: filemap_add_folio+0x1d3/0x630 mm/filemap.c:966 ra_alloc_folio mm/readahead.c:470 [inline] page_cache_ra_order+0x602/0xed0 mm/readahead.c:535 do_sync_mmap_readahead mm/filemap.c:3428 [inline] filemap_fault+0x1943/0x3130 mm/filemap.c:3582 __do_fault+0x10b/0x440 mm/memory.c:5425 do_read_fault mm/memory.c:5860 [inline] do_fault+0xa99/0x1750 mm/memory.c:5994 do_pte_missing mm/memory.c:4566 [inline] handle_pte_fault mm/memory.c:6379 [inline] __handle_mm_fault+0x187d/0x2a00 mm/memory.c:6517 handle_mm_fault+0x37b/0xa30 mm/memory.c:6686 faultin_page mm/gup.c:1126 [inline] __get_user_pages+0x1178/0x32a0 mm/gup.c:1428 populate_vma_page_range+0x267/0x3f0 mm/gup.c:1860 __mm_populate+0x107/0x3a0 mm/gup.c:1963 mm_populate include/linux/mm.h:4171 [inline] vm_mmap_pgoff+0x37f/0x470 mm/util.c:586 ksys_mmap_pgoff+0x3cb/0x610 mm/mmap.c:606 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:89 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:82 [inline] __x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:82 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8ed8d9de59 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f8ed9bb9028 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007f8ed9026090 RCX: 00007f8ed8d9de59 RDX: 0000000001000002 RSI: 0000000000b36000 RDI: 0000200000000000 RBP: 00007f8ed8e33e6f R08: 0000000000000005 R09: 000000002c93a000 R10: 0000000000028011 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f8ed9026128 R14: 00007f8ed9026090 R15: 00007ffcec038f48 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__filemap_add_folio+0xfc2/0x12a0 mm/filemap.c:858 Code: 50 c1 ff 48 c7 c6 e0 92 dd 8b 4c 89 ef e8 c6 ea 12 00 90 0f 0b e8 1e 50 c1 ff 48 c7 c6 40 93 dd 8b 4c 89 ef e8 af ea 12 00 90 <0f> 0b e8 07 50 c1 ff 48 c7 c6 c0 93 dd 8b 4c 89 ef e8 98 ea 12 00 RSP: 0018:ffffc900062b73f8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000112cc0 RCX: 0000000000000000 RDX: ffff8880581a2540 RSI: ffffffff825b1b48 RDI: ffff8880581a2a04 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000002 R13: ffffea0000df5500 R14: 000000000002c928 R15: 0000000000000000 FS: 00007f8ed9bb96c0(0000) GS:ffff8880d61e0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe7d87eb540 CR3: 000000002a144000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 00000000fda3b69a DR6: 00000000ffff0ff0 DR7: 0000000000000400