loop0: detected capacity change from 0 to 256 FAULT_INJECTION: forcing a failure. name fail_usercopy, interval 1, probability 0, space 0, times 1 CPU: 0 PID: 8411 Comm: syz-executor.4 Not tainted 6.0.0-rc1-next-20220819 #1 BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:1521 in_atomic(): 0, irqs_disabled(): 1, non_block: 0, pid: 8411, name: syz-executor.4 preempt_count: 0, expected: 0 RCU nest depth: 0, expected: 0 no locks held by syz-executor.4/8411. irq event stamp: 206 hardirqs last enabled at (205): [] __up_console_sem+0x78/0x80 hardirqs last disabled at (206): [] dump_stack_lvl+0x2e/0xb3 softirqs last enabled at (0): [] copy_process+0x1dfe/0x6de0 softirqs last disabled at (0): [<0000000000000000>] 0x0 CPU: 0 PID: 8411 Comm: syz-executor.4 Not tainted 6.0.0-rc1-next-20220819 #1 FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) loop6: detected capacity change from 0 to 256 loop1: detected capacity change from 0 to 256 FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop1): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop6): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) syz-executor.4[8411] cmdline: /syz-executor.4 exec Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 Call Trace: dump_stack_lvl+0x8b/0xb3 __might_resched.cold+0x222/0x26b down_read_killable+0x75/0x490 __access_remote_vm+0xac/0x6f0 get_mm_cmdline.part.0+0x214/0x600 get_task_cmdline_kernel+0x1e9/0x230 dump_stack_print_cmdline.part.0+0x82/0x150 dump_stack_print_info+0x185/0x190 dump_stack_lvl+0x7f/0xb3 should_fail.cold+0x5/0xa _copy_from_user+0x2a/0x170 io_uring_setup+0x86/0x150 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f0f19ca4b19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f0f171f9108 EFLAGS: 00000202 ORIG_RAX: 00000000000001a9 RAX: ffffffffffffffda RBX: 00007f0f19db8020 RCX: 00007f0f19ca4b19 RDX: 0000000020ffc000 RSI: 0000000020000000 RDI: 00000000000066c2 RBP: 0000000020000000 R08: 0000000020000140 R09: 0000000020000140 R10: 0000000020000100 R11: 0000000000000202 R12: 0000000020000140 R13: 0000000020ffc000 R14: 0000000020000100 R15: 0000000020ffc000 loop2: detected capacity change from 0 to 256 loop0: detected capacity change from 0 to 256 FAULT_INJECTION: forcing a failure. name fail_usercopy, interval 1, probability 0, space 0, times 1 CPU: 0 PID: 8521 Comm: syz-executor.1 Tainted: G W 6.0.0-rc1-next-20220819 #1 syz-executor.1[8521] cmdline: /syz-executor.1 exec syz-executor.4[8411] cmdline: /syz-executor.4 exec Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 Call Trace: Call Trace: dump_stack_lvl+0x8b/0xb3 should_fail.cold+0x5/0xa dump_stack_lvl+0x8b/0xb3 _copy_from_user+0x2a/0x170 should_fail.cold+0x5/0xa _copy_from_user+0x2a/0x170 io_uring_setup+0x86/0x150 iovec_from_user+0x23a/0x3c0 __import_iovec+0x64/0x600 do_syscall_64+0x3b/0x90 import_iovec+0x83/0xb0 entry_SYSCALL_64_after_hwframe+0x63/0xcd __do_sys_vmsplice+0x199/0x9e0 RIP: 0033:0x7f0f19ca4b19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f0f171f9108 EFLAGS: 00000202 ORIG_RAX: 00000000000001a9 RAX: ffffffffffffffda RBX: 00007f0f19db8020 RCX: 00007f0f19ca4b19 RDX: 0000000020ffc000 RSI: 0000000020000000 RDI: 00000000000066c2 RBP: 0000000020000000 R08: 0000000020000140 R09: 0000000020000140 R10: 0000000020000100 R11: 0000000000000202 R12: 0000000020000140 R13: 0000000020ffc000 R14: 0000000020000100 R15: 0000000020ffc000 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f28ad52cb19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f28aaaa2188 EFLAGS: 00000246 ORIG_RAX: 0000000000000116 RAX: ffffffffffffffda RBX: 00007f28ad63ff60 RCX: 00007f28ad52cb19 RDX: 0000000000000001 RSI: 00000000200004c0 RDI: 0000000000000004 RBP: 00007f28aaaa21d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) R13: 00007ffcdba1e50f R14: 00007f28aaaa2300 R15: 0000000000022000 FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) loop6: detected capacity change from 0 to 256 FAT-fs (loop6): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) loop0: detected capacity change from 0 to 256 FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)