Hello, syzbot found the following issue on: HEAD commit: 0a093b2893c7 Add linux-next specific files for 20230112 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=15c67c5e480000 kernel config: https://syzkaller.appspot.com/x/.config?x=835f3591019836d5 dashboard link: https://syzkaller.appspot.com/bug?extid=fa6f2ee9039b87ef86c4 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/8111a570d6cb/disk-0a093b28.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/ecc135b7fc9a/vmlinux-0a093b28.xz kernel image: https://storage.googleapis.com/syzbot-assets/ca8d73b446ea/bzImage-0a093b28.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+fa6f2ee9039b87ef86c4@xxxxxxxxxxxxxxxxxxxxxxxxx dentry_kill fs/dcache.c:745 [inline] dput+0x6ac/0xe10 fs/dcache.c:913 __fput+0x3cc/0xa90 fs/file_table.c:329 task_work_run+0x16f/0x270 kernel/task_work.c:179 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0xb17/0x2a90 kernel/exit.c:867 do_group_exit+0xd4/0x2a0 kernel/exit.c:1012 get_signal+0x225f/0x24f0 kernel/signal.c:2859 ------------[ cut here ]------------ kernel BUG at include/linux/page-flags.h:317! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 10782 Comm: syz-executor.1 Not tainted 6.2.0-rc3-next-20230112-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:folio_flags.constprop.0+0x122/0x150 include/linux/page-flags.h:317 Code: 52 ff ff ff e8 ff f2 cd ff 48 8d 43 ff 49 39 c4 0f 84 40 ff ff ff e8 ed f2 cd ff 48 c7 c6 40 0b 57 8a 4c 89 e7 e8 2e e4 05 00 <0f> 0b e8 57 c2 1b 00 e9 fe fe ff ff e8 4d c2 1b 00 eb a9 4c 89 e7 RSP: 0018:ffffc90005437b00 EFLAGS: 00010246 RAX: 0000000000040000 RBX: 0000000000000001 RCX: ffffc90014e22000 RDX: 0000000000040000 RSI: ffffffff81b3ca02 RDI: 0000000000000000 RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffffea0000b28100 R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffffd400016502c FS: 00007f1e422fd700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005642ce910130 CR3: 000000001cef4000 CR4: 00000000003506f0 Call Trace: <TASK> folio_test_head include/linux/page-flags.h:780 [inline] folio_test_large include/linux/page-flags.h:801 [inline] folio_nr_pages include/linux/mm.h:1735 [inline] compound_nr include/linux/mm.h:1747 [inline] zero_user_segments.constprop.0+0x262/0x350 include/linux/highmem.h:288 shmem_write_end+0x684/0x780 mm/shmem.c:2600 generic_perform_write+0x316/0x570 mm/filemap.c:3783 __generic_file_write_iter+0x2ae/0x500 mm/filemap.c:3900 generic_file_write_iter+0xe3/0x350 mm/filemap.c:3932 call_write_iter include/linux/fs.h:1852 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x9ed/0xe10 fs/read_write.c:584 ksys_write+0x12b/0x250 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f1e4168c0c9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f1e422fd168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f1e417abf80 RCX: 00007f1e4168c0c9 RDX: 0000000000000004 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 00007f1e416e7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc7e6ac66f R14: 00007f1e422fd300 R15: 0000000000022000 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:folio_flags.constprop.0+0x122/0x150 include/linux/page-flags.h:317 Code: 52 ff ff ff e8 ff f2 cd ff 48 8d 43 ff 49 39 c4 0f 84 40 ff ff ff e8 ed f2 cd ff 48 c7 c6 40 0b 57 8a 4c 89 e7 e8 2e e4 05 00 <0f> 0b e8 57 c2 1b 00 e9 fe fe ff ff e8 4d c2 1b 00 eb a9 4c 89 e7 RSP: 0018:ffffc90005437b00 EFLAGS: 00010246 RAX: 0000000000040000 RBX: 0000000000000001 RCX: ffffc90014e22000 RDX: 0000000000040000 RSI: ffffffff81b3ca02 RDI: 0000000000000000 RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffffea0000b28100 R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffffd400016502c FS: 00007f1e422fd700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005642ce910130 CR3: 000000001cef4000 CR4: 00000000003506e0 --- This report is generated by a bot. 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