F2FS-fs (loop2): inject invalid blkaddr in f2fs_is_valid_blkaddr of do_write_page+0x277/0xb10 fs/f2fs/segment.c:3956 ------------[ cut here ]------------ kernel BUG at fs/f2fs/segment.c:3957! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 0 UID: 0 PID: 7021 Comm: syz-executor Not tainted 6.16.0-rc4-next-20250630-syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:do_write_page+0xa44/0xb10 fs/f2fs/segment.c:3956 Code: c2 5a ad fd 49 89 ed 48 89 e8 48 25 ff 0f 00 00 74 1a e8 cf 55 ad fd e9 9f 00 00 00 e8 c5 55 ad fd 90 0f 0b e8 bd 55 ad fd 90 <0f> 0b 4d 89 ee 4c 89 ef be 08 00 00 00 e8 1a 6c 11 fe 49 c1 ee 03 RSP: 0018:ffffc900033a6c58 EFLAGS: 00010293 RAX: ffffffff841275d3 RBX: ffffc900033a6f40 RCX: ffff888023f0bc00 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc900033a6f5c R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffffbfff1bfa428 R12: ffff888054fbc000 R13: 1ffff92000674deb R14: dffffc0000000000 R15: ffffc900033a6f5c FS: 000055557f3fb500(0000) GS:ffff888125c1d000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2fd1aff8 CR3: 00000000302d0000 CR4: 00000000003526f0 Call Trace: f2fs_outplace_write_data+0x11a/0x220 fs/f2fs/segment.c:4017 f2fs_do_write_data_page+0x12ea/0x1a40 fs/f2fs/data.c:2752 f2fs_write_single_data_page+0xa68/0x1680 fs/f2fs/data.c:2851 f2fs_write_cache_pages fs/f2fs/data.c:3133 [inline] __f2fs_write_data_pages fs/f2fs/data.c:3282 [inline] f2fs_write_data_pages+0x195b/0x3000 fs/f2fs/data.c:3309 do_writepages+0x32e/0x550 mm/page-writeback.c:2636 filemap_fdatawrite_wbc mm/filemap.c:386 [inline] __filemap_fdatawrite_range mm/filemap.c:419 [inline] __filemap_fdatawrite mm/filemap.c:425 [inline] filemap_fdatawrite+0x199/0x240 mm/filemap.c:430 f2fs_sync_dirty_inodes+0x31f/0x830 fs/f2fs/checkpoint.c:1108 block_operations fs/f2fs/checkpoint.c:1247 [inline] f2fs_write_checkpoint+0x95a/0x1df0 fs/f2fs/checkpoint.c:1638 kill_f2fs_super+0x2c3/0x6c0 fs/f2fs/super.c:5081 deactivate_locked_super+0xbc/0x130 fs/super.c:474 cleanup_mnt+0x425/0x4c0 fs/namespace.c:1417 task_work_run+0x1d1/0x260 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop+0xec/0x110 kernel/entry/common.c:114 exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline] do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fd691d8fc57 Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007fff03ea31a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 00007fd691e10925 RCX: 00007fd691d8fc57 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff03ea3260 RBP: 00007fff03ea3260 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fff03ea42f0 R13: 00007fd691e10925 R14: 00000000000281ed R15: 00007fff03ea4330 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:do_write_page+0xa44/0xb10 fs/f2fs/segment.c:3956 Code: c2 5a ad fd 49 89 ed 48 89 e8 48 25 ff 0f 00 00 74 1a e8 cf 55 ad fd e9 9f 00 00 00 e8 c5 55 ad fd 90 0f 0b e8 bd 55 ad fd 90 <0f> 0b 4d 89 ee 4c 89 ef be 08 00 00 00 e8 1a 6c 11 fe 49 c1 ee 03 RSP: 0018:ffffc900033a6c58 EFLAGS: 00010293 RAX: ffffffff841275d3 RBX: ffffc900033a6f40 RCX: ffff888023f0bc00 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc900033a6f5c R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffffbfff1bfa428 R12: ffff888054fbc000 R13: 1ffff92000674deb R14: dffffc0000000000 R15: ffffc900033a6f5c FS: 000055557f3fb500(0000) GS:ffff888125c1d000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2fd1aff8 CR3: 00000000302d0000 CR4: 00000000003526f0