folio_batch_release include/linux/pagevec.h:101 [inline] shmem_undo_range+0x5e5/0x1570 mm/shmem.c:1149 shmem_truncate_range mm/shmem.c:1277 [inline] shmem_evict_inode+0x39e/0xbd0 mm/shmem.c:1407 evict+0x3c2/0xad0 fs/inode.c:837 iput_final fs/inode.c:1954 [inline] iput.part.0+0x624/0x1150 fs/inode.c:2006 iput+0x35/0x40 fs/inode.c:1969 dentry_unlink_inode+0x2a1/0x490 fs/dcache.c:467 __dentry_kill+0x1d0/0x600 fs/dcache.c:670 finish_dput+0x76/0x480 fs/dcache.c:879 dput.part.0+0x456/0x570 fs/dcache.c:928 dput+0x1f/0x30 fs/dcache.c:920 __fput+0x519/0xb40 fs/file_table.c:476 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:44 [inline] exit_to_user_mode_loop+0x100/0x4b0 kernel/entry/common.c:75 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline] do_syscall_64+0x4ea/0xf80 arch/x86/entry/syscall_64.c:100 ------------[ cut here ]------------ kernel BUG at mm/filemap.c:155! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 0 UID: 0 PID: 12615 Comm: syz.4.1295 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026 RIP: 0010:filemap_unaccount_folio+0x728/0xb30 mm/filemap.c:155 Code: 00 48 8b b5 a0 01 00 00 48 89 df e8 b2 7d 03 00 e9 3c fd ff ff e8 d8 4b c8 ff 48 c7 c6 00 0b 9d 8b 48 89 df e8 c9 99 12 00 90 <0f> 0b e8 c1 4b c8 ff 48 c7 c6 a0 05 9d 8b 48 89 df e8 b2 99 12 00 RSP: 0018:ffffc9000d2f7218 EFLAGS: 00010093 RAX: 0000000000000000 RBX: ffffea000117f240 RCX: ffffc9000d2f70fc RDX: ffff88802d7cdb80 RSI: ffffffff82509ce8 RDI: ffff88802d7ce004 RBP: ffffea000117f270 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffff88802fa8f810 R13: ffffea000117f248 R14: 0000000000000001 R15: ffffea000117f258 FS: 0000000000000000(0000) GS:ffff8881245e2000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6443df6d58 CR3: 000000007b7a8000 CR4: 00000000003526f0 Call Trace: __filemap_remove_folio+0xae/0x660 mm/filemap.c:227 filemap_remove_folio+0xfc/0x270 mm/filemap.c:257 truncate_inode_folio+0x49/0x70 mm/truncate.c:176 shmem_undo_range+0x3ae/0x1570 mm/shmem.c:1145 shmem_truncate_range mm/shmem.c:1277 [inline] shmem_evict_inode+0x39e/0xbd0 mm/shmem.c:1407 evict+0x3c2/0xad0 fs/inode.c:837 iput_final fs/inode.c:1954 [inline] iput.part.0+0x624/0x1150 fs/inode.c:2006 iput+0x35/0x40 fs/inode.c:1969 dentry_unlink_inode+0x2a1/0x490 fs/dcache.c:467 __dentry_kill+0x1d0/0x600 fs/dcache.c:670 finish_dput+0x76/0x480 fs/dcache.c:879 dput.part.0+0x456/0x570 fs/dcache.c:928 dput+0x1f/0x30 fs/dcache.c:920 __fput+0x519/0xb40 fs/file_table.c:476 task_work_run+0x150/0x240 kernel/task_work.c:233 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0x829/0x2a30 kernel/exit.c:971 do_group_exit+0xd5/0x2a0 kernel/exit.c:1112 get_signal+0x1ec7/0x21e0 kernel/signal.c:3034 arch_do_signal_or_restart+0x91/0x770 arch/x86/kernel/signal.c:337 __exit_to_user_mode_loop kernel/entry/common.c:41 [inline] exit_to_user_mode_loop+0x86/0x4b0 kernel/entry/common.c:75 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline] do_syscall_64+0x4ea/0xf80 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f4ffad9af79 Code: Unable to access opcode bytes at 0x7f4ffad9af4f. RSP: 002b:00007f4ffbc820e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007f4ffb015fa8 RCX: 00007f4ffad9af79 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f4ffb015fa8 RBP: 00007f4ffb015fa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f4ffb016038 R14: 00007ffd35fa8100 R15: 00007ffd35fa81e8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:filemap_unaccount_folio+0x728/0xb30 mm/filemap.c:155 Code: 00 48 8b b5 a0 01 00 00 48 89 df e8 b2 7d 03 00 e9 3c fd ff ff e8 d8 4b c8 ff 48 c7 c6 00 0b 9d 8b 48 89 df e8 c9 99 12 00 90 <0f> 0b e8 c1 4b c8 ff 48 c7 c6 a0 05 9d 8b 48 89 df e8 b2 99 12 00 RSP: 0018:ffffc9000d2f7218 EFLAGS: 00010093 RAX: 0000000000000000 RBX: ffffea000117f240 RCX: ffffc9000d2f70fc RDX: ffff88802d7cdb80 RSI: ffffffff82509ce8 RDI: ffff88802d7ce004 RBP: ffffea000117f270 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffff88802fa8f810 R13: ffffea000117f248 R14: 0000000000000001 R15: ffffea000117f258 FS: 0000000000000000(0000) GS:ffff8881245e2000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6443df6d58 CR3: 000000007b7a8000 CR4: 00000000003526f0