Hi, The kernel crashes with the following backtrace on linux-next: [ 203.304451] kernel BUG at fs/inode.c:612! [ 203.304466] invalid opcode: 0000 [#1] PREEMPT SMP PTI [ 203.305215] CPU: 0 PID: 868 Comm: alloc-instantia Not tainted 5.19.0-rc1-next-20220609 #256 [ 203.305563] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-6.fc35 04/01/2014 [ 203.305922] RIP: 0010:clear_inode+0x6e/0x80 [ 203.306139] Code: 00 a8 20 74 29 a8 40 75 27 48 8b 93 18 01 00 00 48 8d 83 18 01 00 00 48 39 c2 75 16 48 c7 83 98 00 00 00 60 00 00 00 5b 5d c3 <0f> 0b 0f 0b 0f 0b 0f 0b 0f 0b 0f 1f 84 00 00 00 00 00 0f 1f 44 00 [ 203.306827] RSP: 0018:ffffa49dc07cbde8 EFLAGS: 00010002 [ 203.307074] RAX: 0000000000000000 RBX: ffff8bf4cecc4010 RCX: 0000000000069600 [ 203.307380] RDX: 0000000000000001 RSI: ffffffff929b5b2b RDI: 0000000000000000 [ 203.307715] RBP: ffff8bf4cecc4180 R08: 000003fffffffffe R09: ffffffffffffffc0 [ 203.307988] R10: ffff8bf4ca515ec8 R11: ffffa49dc07cbc68 R12: ffff8bf4cecc4118 [ 203.308256] R13: ffff8bf4cf029a80 R14: ffff8bf4cb2ce900 R15: ffff8bf4c79b8848 [ 203.308591] FS: 0000000000000000(0000) GS:ffff8bf533000000(0000) knlGS:0000000000000000 [ 203.309033] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 203.309327] CR2: 00007fadbf5d3838 CR3: 000000016520c000 CR4: 00000000000006f0 [ 203.309661] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 203.309997] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 203.310330] Call Trace: [ 203.310534] <TASK> [ 203.310733] evict+0xc3/0x1c0 [ 203.310956] __dentry_kill+0xd6/0x170 [ 203.311196] dput+0x144/0x2e0 [ 203.311416] __fput+0xdb/0x240 [ 203.311634] task_work_run+0x5c/0x90 [ 203.311876] do_exit+0x317/0xa80 [ 203.312104] do_group_exit+0x2d/0x90 [ 203.312337] __x64_sys_exit_group+0x14/0x20 [ 203.312599] do_syscall_64+0x3b/0x90 [ 203.312816] entry_SYSCALL_64_after_hwframe+0x46/0xb0 [ 203.313064] RIP: 0033:0x7fadbf4f2711 [ 203.313275] Code: Unable to access opcode bytes at RIP 0x7fadbf4f26e7. [ 203.313559] RSP: 002b:00007fff6b0e0458 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 203.313932] RAX: ffffffffffffffda RBX: 00007fadbf5cf9e0 RCX: 00007fadbf4f2711 [ 203.314228] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 203.314523] RBP: 0000000000000000 R08: ffffffffffffff80 R09: 0000000000000000 [ 203.314821] R10: 00007fadbf3dffa8 R11: 0000000000000246 R12: 00007fadbf5cf9e0 [ 203.315120] R13: 0000000000000000 R14: 00007fadbf5d4ee8 R15: 00007fadbf5d4f00 [ 203.315431] </TASK> [ 203.315606] Modules linked in: zram zsmalloc xfs libcrc32c [ 203.315875] ---[ end trace 0000000000000000 ]--- [ 203.315876] RIP: 0010:clear_inode+0x6e/0x80 [ 203.315878] Code: 00 a8 20 74 29 a8 40 75 27 48 8b 93 18 01 00 00 48 8d 83 18 01 00 00 48 39 c2 75 16 48 c7 83 98 00 00 00 60 00 00 00 5b 5d c3 <0f> 0b 0f 0b 0f 0b 0f 0b 0f 0b 0f 1f 84 00 00 00 00 00 0f 1f 44 00 [ 203.315879] RSP: 0018:ffffa49dc07cbde8 EFLAGS: 00010002 [ 203.315880] RAX: 0000000000000000 RBX: ffff8bf4cecc4010 RCX: 0000000000069600 [ 203.315881] RDX: 0000000000000001 RSI: ffffffff929b5b2b RDI: 0000000000000000 [ 203.315881] RBP: ffff8bf4cecc4180 R08: 000003fffffffffe R09: ffffffffffffffc0 [ 203.315882] R10: ffff8bf4ca515ec8 R11: ffffa49dc07cbc68 R12: ffff8bf4cecc4118 [ 203.315883] R13: ffff8bf4cf029a80 R14: ffff8bf4cb2ce900 R15: ffff8bf4c79b8848 [ 203.315884] FS: 0000000000000000(0000) GS:ffff8bf533000000(0000) knlGS:0000000000000000 [ 203.315886] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 203.315887] CR2: 00007fadbf5d3838 CR3: 000000016520c000 CR4: 00000000000006f0 [ 203.315887] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 203.315888] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 203.315889] note: alloc-instantia[868] exited with preempt_count 1 [ 203.315890] Fixing recursive fault but reboot is needed! [ 203.315892] BUG: scheduling while atomic: alloc-instantia/868/0x00000000 [ 203.315893] Modules linked in: zram zsmalloc xfs libcrc32c [ 203.315894] Preemption disabled at: [ 203.315895] [<0000000000000000>] 0x0 [ 203.315896] CPU: 0 PID: 868 Comm: alloc-instantia Tainted: G D 5.19.0-rc1-next-20220609 #256 [ 203.315898] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-6.fc35 04/01/2014 [ 203.315898] Call Trace: [ 203.315900] <TASK> [ 203.315901] dump_stack_lvl+0x34/0x44 [ 203.315905] __schedule_bug.cold+0x7d/0x8b [ 203.315907] __schedule+0x624/0x700 [ 203.315908] ? _printk+0x58/0x6f [ 203.315911] do_task_dead+0x3f/0x50 [ 203.315913] make_task_dead.cold+0x51/0xab [ 203.315914] rewind_stack_and_make_dead+0x17/0x17 [ 203.315917] RIP: 0033:0x7fadbf4f2711 [ 203.315918] Code: Unable to access opcode bytes at RIP 0x7fadbf4f26e7. [ 203.315918] RSP: 002b:00007fff6b0e0458 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 203.315919] RAX: ffffffffffffffda RBX: 00007fadbf5cf9e0 RCX: 00007fadbf4f2711 [ 203.315920] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 203.315921] RBP: 0000000000000000 R08: ffffffffffffff80 R09: 0000000000000000 [ 203.315921] R10: 00007fadbf3dffa8 R11: 0000000000000246 R12: 00007fadbf5cf9e0 [ 203.315922] R13: 0000000000000000 R14: 00007fadbf5d4ee8 R15: 00007fadbf5d4f00 [ 203.315924] </TASK> * Bisected the crash to this commit. To reproduce: * clone libhugetlbfs: * Execute, PATH=$PATH:"obj64/" LD_LIBRARY_PATH=../obj64/ alloc-instantiate-race shared Crashes on both s390 and x86. Thanks -- Sumanth
