BUG at fs/jfs/jfs_dmap.c:3024 assert(nb <= DBWORD) ------------[ cut here ]------------ kernel BUG at fs/jfs/jfs_dmap.c:3024! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 4396 Comm: syz.2.3 Not tainted 6.1.130-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : dbFindBits+0x1b8/0x1e4 fs/jfs/jfs_dmap.c:3024 lr : dbFindBits+0x1b8/0x1e4 fs/jfs/jfs_dmap.c:3024 sp : ffff8000219c7750 x29: ffff8000219c7750 x28: 00000000ffffffff x27: 1ffff00004338ef4 x26: dfff800000000000 x25: ffff0000ddcb0800 x24: 000000000000000a x23: 0000000000000000 x22: ffff0000d5a09000 x21: 00000000ffffffff x20: 0000000000000400 x19: 000000000000000a x18: ffff8000219c6d20 x17: 0000000000000000 x16: ffff80001232a73c x15: 0000000000000002 x14: 00000000ffffffff x13: 0000000000000001 x12: 0000000000080000 x11: 0000000000008b73 x10: ffff800024179000 x9 : 3a6693e09ee5f400 x8 : 3a6693e09ee5f400 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff8000219c7058 x4 : ffff800015be5320 x3 : ffff80000ab33038 x2 : ffff0001b3cc2cd0 x1 : 0000000100000000 x0 : 0000000000000032 Call trace: dbFindBits+0x1b8/0x1e4 fs/jfs/jfs_dmap.c:3024 dbAllocDmapLev+0x194/0x414 fs/jfs/jfs_dmap.c:1988 dbAllocCtl+0x12c/0x890 fs/jfs/jfs_dmap.c:1828 dbAllocAG+0x208/0xe4c fs/jfs/jfs_dmap.c:1364 dbDiscardAG+0x244/0x748 fs/jfs/jfs_dmap.c:1613 jfs_ioc_trim+0x3f4/0x5f0 fs/jfs/jfs_discard.c:105 jfs_ioctl+0x338/0x550 fs/jfs/ioctl.c:131 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:856 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 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: d0046ec3 91218063 52817a02 9593ea09 (d4210000) ---[ end trace 0000000000000000 ]---