stack segment: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 4525 Comm: udevd Not tainted 6.7.0-rc3-syzkaller-00284-g815fb87b7530 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 RIP: 0010:find_stack lib/stackdepot.c:350 [inline] RIP: 0010:__stack_depot_save+0x15e/0x520 lib/stackdepot.c:390 Code: 29 c0 89 c3 48 8b 05 f9 df 15 0e 89 d9 23 0d e9 df 15 0e 48 8d 0c c8 48 8b 29 48 85 ed 75 0b eb 70 48 8b 6d 00 48 85 ed 74 67 <39> 5d 08 75 f2 44 3b 7d 0c 75 ec 31 c0 48 8b 74 c5 18 49 39 34 c6 RSP: 0018:ffffc9000313f5c0 EFLAGS: 00010202 RAX: ffff88823b400000 RBX: 0000000002972db3 RCX: ffff88823b796d98 RDX: 000000000000000f RSI: 0000000000000003 RDI: 000000001871a4f5 RBP: 1f0f66c35b044389 R08: 000000008c47e937 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000004 R12: 0000000000000001 R13: 0000000000000dc0 R14: ffffc9000313f628 R15: 000000000000000f FS: 00007f1a013b6c80(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffeaa65d000 CR3: 0000000018334000 CR4: 0000000000350ef0 Call Trace: kasan_save_stack+0x43/0x50 mm/kasan/common.c:46 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 __kasan_slab_alloc+0x81/0x90 mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:188 [inline] slab_post_alloc_hook mm/slab.h:763 [inline] slab_alloc_node mm/slub.c:3478 [inline] slab_alloc mm/slub.c:3486 [inline] __kmem_cache_alloc_lru mm/slub.c:3493 [inline] kmem_cache_alloc+0x15d/0x2f0 mm/slub.c:3502 kmem_cache_zalloc include/linux/slab.h:711 [inline] __kernfs_iattrs+0xb8/0x3f0 fs/kernfs/inode.c:37 kernfs_iattrs fs/kernfs/inode.c:60 [inline] __kernfs_setattr+0x4d/0x3c0 fs/kernfs/inode.c:73 kernfs_iop_setattr+0x120/0x180 fs/kernfs/inode.c:127 notify_change+0x742/0x11c0 fs/attr.c:499 do_truncate+0x15c/0x220 fs/open.c:66 handle_truncate fs/namei.c:3280 [inline] do_open fs/namei.c:3626 [inline] path_openat+0x25a0/0x2c50 fs/namei.c:3779 do_filp_open+0x1de/0x430 fs/namei.c:3809 do_sys_openat2+0x176/0x1e0 fs/open.c:1440 do_sys_open fs/open.c:1455 [inline] __do_sys_openat fs/open.c:1471 [inline] __se_sys_openat fs/open.c:1466 [inline] __x64_sys_openat+0x175/0x210 fs/open.c:1466 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f1a00f169a4 Code: 24 20 48 8d 44 24 30 48 89 44 24 28 64 8b 04 25 18 00 00 00 85 c0 75 2c 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 76 60 48 8b 15 55 a4 0d 00 f7 d8 64 89 02 48 83 RSP: 002b:00007ffef1d9c270 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f1a00f169a4 RDX: 0000000000080241 RSI: 00007ffef1d9c6a8 RDI: 00000000ffffff9c RBP: 00007ffef1d9c6a8 R08: 0000000000000004 R09: 0000000000000001 R10: 00000000000001b6 R11: 0000000000000246 R12: 0000000000080241 R13: 0000564c2e53f72e R14: 0000000000000001 R15: 0000000000000000 Modules linked in: ---------------- Code disassembly (best guess): 0: 29 c0 sub %eax,%eax 2: 89 c3 mov %eax,%ebx 4: 48 8b 05 f9 df 15 0e mov 0xe15dff9(%rip),%rax # 0xe15e004 b: 89 d9 mov %ebx,%ecx d: 23 0d e9 df 15 0e and 0xe15dfe9(%rip),%ecx # 0xe15dffc 13: 48 8d 0c c8 lea (%rax,%rcx,8),%rcx 17: 48 8b 29 mov (%rcx),%rbp 1a: 48 85 ed test %rbp,%rbp 1d: 75 0b jne 0x2a 1f: eb 70 jmp 0x91 21: 48 8b 6d 00 mov 0x0(%rbp),%rbp 25: 48 85 ed test %rbp,%rbp 28: 74 67 je 0x91 * 2a: 39 5d 08 cmp %ebx,0x8(%rbp) <-- trapping instruction 2d: 75 f2 jne 0x21 2f: 44 3b 7d 0c cmp 0xc(%rbp),%r15d 33: 75 ec jne 0x21 35: 31 c0 xor %eax,%eax 37: 48 8b 74 c5 18 mov 0x18(%rbp,%rax,8),%rsi 3c: 49 39 34 c6 cmp %rsi,(%r14,%rax,8)