gfs2: fsid=syz:syz.0: G: s:UN n:2/24a1 f:an t:UN d:EX/0 a:0 v:0 r:-128 m:20 p:1 ------------[ cut here ]------------ kernel BUG at fs/gfs2/glock.c:274! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 0 UID: 0 PID: 18665 Comm: syz.1.3288 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 RIP: 0010:__gfs2_glock_put+0x384/0x3e0 fs/gfs2/glock.c:274 Code: 3f 48 89 de e8 7d 0f ff ff eb 26 e8 96 e9 c5 fd e9 30 fe ff ff e8 8c e9 c5 fd 31 ff 48 89 de ba 01 00 00 00 e8 2d df ff ff 90 <0f> 0b e8 75 e9 c5 fd 31 f6 65 ff 0d 7c ce c7 0e 40 0f 94 c5 40 0f RSP: 0018:ffffc90004a0f9c8 EFLAGS: 00010246 RAX: 6498f0c620a64000 RBX: ffff888077d20fd8 RCX: 0000000000080000 RDX: ffffc9001ea06000 RSI: 000000000007ffff RDI: 0000000000080000 RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffffbfff1c3a65c R12: dffffc0000000000 R13: 1ffff1100d3fa815 R14: ffff888069fd4000 R15: ffff888077d212c8 FS: 00007f5ccd3fc6c0(0000) GS:ffff8881259fc000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f10b22b3f98 CR3: 000000007b628000 CR4: 00000000003526f0 Call Trace: gfs2_glock_put_eventually fs/gfs2/super.c:1183 [inline] gfs2_evict_inode+0xae7/0x1000 fs/gfs2/super.c:1458 evict+0x504/0x9c0 fs/inode.c:810 __dentry_kill+0x209/0x660 fs/dcache.c:669 dput+0x19f/0x2b0 fs/dcache.c:911 shrink_dcache_for_umount+0xa0/0x170 fs/dcache.c:1621 generic_shutdown_super+0x67/0x2c0 fs/super.c:620 kill_block_super+0x44/0x90 fs/super.c:1722 deactivate_locked_super+0xbc/0x130 fs/super.c:473 cleanup_mnt+0x425/0x4c0 fs/namespace.c:1327 task_work_run+0x1d4/0x260 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop+0xe9/0x130 kernel/entry/common.c:43 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline] do_syscall_64+0x2bd/0xfa0 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f5ccc59066a Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f5ccd3fbe68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffec RBX: 00007f5ccd3fbef0 RCX: 00007f5ccc59066a RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f5ccd3fbeb0 RBP: 0000200000037f40 R08: 00007f5ccd3fbef0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80 R13: 00007f5ccd3fbeb0 R14: 0000000000037f64 R15: 00002000000000c0 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__gfs2_glock_put+0x384/0x3e0 fs/gfs2/glock.c:274 Code: 3f 48 89 de e8 7d 0f ff ff eb 26 e8 96 e9 c5 fd e9 30 fe ff ff e8 8c e9 c5 fd 31 ff 48 89 de ba 01 00 00 00 e8 2d df ff ff 90 <0f> 0b e8 75 e9 c5 fd 31 f6 65 ff 0d 7c ce c7 0e 40 0f 94 c5 40 0f RSP: 0018:ffffc90004a0f9c8 EFLAGS: 00010246 RAX: 6498f0c620a64000 RBX: ffff888077d20fd8 RCX: 0000000000080000 RDX: ffffc9001ea06000 RSI: 000000000007ffff RDI: 0000000000080000 RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffffbfff1c3a65c R12: dffffc0000000000 R13: 1ffff1100d3fa815 R14: ffff888069fd4000 R15: ffff888077d212c8 FS: 00007f5ccd3fc6c0(0000) GS:ffff888125afc000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000001280 CR3: 000000007b628000 CR4: 00000000003526f0