Oops: stack segment: 0000 [#1] SMP KASAN PTI CPU: 1 UID: 0 PID: 121 Comm: jfsCommit Tainted: G W 6.16.0-syzkaller-12288-g2b38afce25c4 #0 PREEMPT_{RT,(full)} Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:folio_flags include/linux/page-flags.h:360 [inline] RIP: 0010:folio_trylock include/linux/pagemap.h:1096 [inline] RIP: 0010:folio_lock include/linux/pagemap.h:1132 [inline] RIP: 0010:release_metapage+0x9e/0xab0 fs/jfs/jfs_metapage.c:870 Code: 04 00 00 e8 54 d4 87 fe 48 c7 c7 ab ee 05 8d be 6b 04 00 00 e8 c3 c4 5a fe 2e 2e 2e 31 c0 49 8d 5c 24 08 48 89 dd 48 c1 ed 03 <42> 80 7c 2d 00 00 74 08 48 89 df e8 e2 0b e7 fe 4c 8b 3b 4c 89 fe RSP: 0018:ffffc900039e76d8 EFLAGS: 00010202 RAX: 0000000000000000 RBX: 0000000000000008 RCX: 87fd5932402a4100 RDX: ffff88801e3f0000 RSI: ffffffff8d21768a RDI: ffffffff8b620a00 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: ffffed100bc28c56 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff88805e146288 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8881269c5000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7e68b21a10 CR3: 0000000021314000 CR4: 00000000003526f0 Call Trace: xtTruncate+0xe84/0x2e70 fs/jfs/jfs_xtree.c:-1 jfs_free_zero_link+0x33a/0x4a0 fs/jfs/namei.c:759 jfs_evict_inode+0x363/0x440 fs/jfs/inode.c:153 evict+0x504/0x9c0 fs/inode.c:810 txLazyCommit fs/jfs/jfs_txnmgr.c:2664 [inline] jfs_lazycommit+0x3f1/0xa10 fs/jfs/jfs_txnmgr.c:2733 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:folio_flags include/linux/page-flags.h:360 [inline] RIP: 0010:folio_trylock include/linux/pagemap.h:1096 [inline] RIP: 0010:folio_lock include/linux/pagemap.h:1132 [inline] RIP: 0010:release_metapage+0x9e/0xab0 fs/jfs/jfs_metapage.c:870 Code: 04 00 00 e8 54 d4 87 fe 48 c7 c7 ab ee 05 8d be 6b 04 00 00 e8 c3 c4 5a fe 2e 2e 2e 31 c0 49 8d 5c 24 08 48 89 dd 48 c1 ed 03 <42> 80 7c 2d 00 00 74 08 48 89 df e8 e2 0b e7 fe 4c 8b 3b 4c 89 fe RSP: 0018:ffffc900039e76d8 EFLAGS: 00010202 RAX: 0000000000000000 RBX: 0000000000000008 RCX: 87fd5932402a4100 RDX: ffff88801e3f0000 RSI: ffffffff8d21768a RDI: ffffffff8b620a00 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: ffffed100bc28c56 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff88805e146288 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8881269c5000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7e68b21a10 CR3: 0000000021314000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 00 00 add %al,(%rax) 2: e8 54 d4 87 fe call 0xfe87d45b 7: 48 c7 c7 ab ee 05 8d mov $0xffffffff8d05eeab,%rdi e: be 6b 04 00 00 mov $0x46b,%esi 13: e8 c3 c4 5a fe call 0xfe5ac4db 18: 2e 2e 2e 31 c0 cs cs cs xor %eax,%eax 1d: 49 8d 5c 24 08 lea 0x8(%r12),%rbx 22: 48 89 dd mov %rbx,%rbp 25: 48 c1 ed 03 shr $0x3,%rbp * 29: 42 80 7c 2d 00 00 cmpb $0x0,0x0(%rbp,%r13,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 48 89 df mov %rbx,%rdi 34: e8 e2 0b e7 fe call 0xfee70c1b 39: 4c 8b 3b mov (%rbx),%r15 3c: 4c 89 fe mov %r15,%rsi