BUG at fs/jfs/jfs_dmap.c:3028 assert(bitno < 32) ------------[ cut here ]------------ kernel BUG at fs/jfs/jfs_dmap.c:3028! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 6896 Comm: syz-executor.0 Not tainted 6.1.87-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 pstate: 60401005 (nZCv daif +PAN -UAO -TCO -DIT +SSBS BTYPE=--) pc : dbFindBits+0x1e0/0x1e4 fs/jfs/jfs_dmap.c:3028 lr : dbFindBits+0x1e0/0x1e4 fs/jfs/jfs_dmap.c:3028 sp : ffff80001e0c6b90 x29: ffff80001e0c6b90 x28: 00000000ffffffff x27: 1ffff00003c18d7c x26: dfff800000000000 x25: 0000000000000000 x24: 0000000000000000 x23: ffff800015deed90 x22: 0000000000000020 x21: 0000000000000000 x20: 0000000000000001 x19: 0000000000000000 x18: ffff80001e0c60e0 x17: 0000000000000000 x16: ffff80001215c9dc x15: 0000000000000002 x14: 00000000ffffffff x13: 0000000000000001 x12: 0000000000040000 x11: 0000000000006c68 x10: ffff80001e779000 x9 : f554731e83e23900 x8 : f554731e83e23900 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001e0c6498 x4 : ffff800015932b00 x3 : ffff80000aa9158c x2 : ffff0001b4378cd0 x1 : 0000000100000000 x0 : 0000000000000030 Call trace: dbFindBits+0x1e0/0x1e4 fs/jfs/jfs_dmap.c:3028 dbAllocDmapLev+0x194/0x414 fs/jfs/jfs_dmap.c:1983 dbAllocCtl+0x104/0x844 fs/jfs/jfs_dmap.c:1823 dbAllocAG+0x208/0xe4c fs/jfs/jfs_dmap.c:1364 dbAlloc+0x520/0xb68 fs/jfs/jfs_dmap.c:888 dtSplitUp fs/jfs/jfs_dtree.c:979 [inline] dtInsert+0xab0/0x54f4 fs/jfs/jfs_dtree.c:868 jfs_create+0x698/0xa1c fs/jfs/namei.c:137 lookup_open fs/namei.c:3484 [inline] open_last_lookups fs/namei.c:3552 [inline] path_openat+0xeac/0x2548 fs/namei.c:3782 do_filp_open+0x1bc/0x3cc fs/namei.c:3812 do_sys_openat2+0x128/0x3d8 fs/open.c:1318 do_sys_open fs/open.c:1334 [inline] __do_sys_openat fs/open.c:1350 [inline] __se_sys_openat fs/open.c:1345 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1345 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Code: 90046423 91070063 52817a82 95962330 (d4210000) ---[ end trace 0000000000000000 ]---